forked from OSchip/llvm-project
898 lines
57 KiB
C
898 lines
57 KiB
C
// RUN: %clang_cc1 -triple arm64-linux-gnu -emit-llvm -o - %s | FileCheck --check-prefix=CHECK --check-prefix=CHECK-LE %s
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// RUN: %clang_cc1 -triple aarch64_be-linux-gnu -emit-llvm -o - %s | FileCheck --check-prefix=CHECK --check-prefix=CHECK-BE %s
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#include <stdarg.h>
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// Obviously there's more than one way to implement va_arg. This test should at
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// least prevent unintentional regressions caused by refactoring.
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va_list the_list;
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int simple_int(void) {
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// CHECK-LABEL: define{{.*}} i32 @simple_int
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return va_arg(the_list, int);
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// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
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// CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
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// CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
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// CHECK: [[VAARG_MAYBE_REG]]
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// CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 8
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// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
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// CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
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// CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
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// CHECK: [[VAARG_IN_REG]]
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// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
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// CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
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// CHECK-BE: [[REG_ADDR_ALIGNED:%[0-9]+]] = getelementptr inbounds i8, i8* [[REG_ADDR]], i64 4
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// CHECK-BE: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR_ALIGNED]] to i32*
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// CHECK-LE: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to i32*
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// CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
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// CHECK: [[VAARG_ON_STACK]]
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// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
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// CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 8
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// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
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// CHECK-BE: [[STACK_ALIGNED:%[a-z_0-9]*]] = getelementptr inbounds i8, i8* [[STACK]], i64 4
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// CHECK-BE: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK_ALIGNED]] to i32*
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// CHECK-LE: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to i32*
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// CHECK: br label %[[VAARG_END]]
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// CHECK: [[VAARG_END]]
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// CHECK: [[ADDR:%[a-z._0-9]+]] = phi i32* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
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// CHECK: [[RESULT:%[a-z_0-9]+]] = load i32, i32* [[ADDR]]
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// CHECK: ret i32 [[RESULT]]
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}
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__int128 aligned_int(void) {
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// CHECK-LABEL: define{{.*}} i128 @aligned_int
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return va_arg(the_list, __int128);
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// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
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// CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
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// CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
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// CHECK: [[VAARG_MAYBE_REG]]
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// CHECK: [[ALIGN_REGOFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 15
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// CHECK: [[ALIGNED_REGOFFS:%[a-z_0-9]+]] = and i32 [[ALIGN_REGOFFS]], -16
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// CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[ALIGNED_REGOFFS]], 16
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// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
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// CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
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// CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
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// CHECK: [[VAARG_IN_REG]]
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// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
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// CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[ALIGNED_REGOFFS]]
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// CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to i128*
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// CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
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// CHECK: [[VAARG_ON_STACK]]
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// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
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// CHECK: [[STACKINT:%[a-z_0-9]+]] = ptrtoint i8* [[STACK]] to i64
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// CHECK: [[ALIGN_STACK:%[a-z_0-9]+]] = add i64 [[STACKINT]], 15
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// CHECK: [[ALIGNED_STACK_INT:%[a-z_0-9]+]] = and i64 [[ALIGN_STACK]], -16
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// CHECK: [[ALIGNED_STACK_PTR:%[a-z_0-9]+]] = inttoptr i64 [[ALIGNED_STACK_INT]] to i8*
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// CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[ALIGNED_STACK_PTR]], i64 16
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// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
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// CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[ALIGNED_STACK_PTR]] to i128*
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// CHECK: br label %[[VAARG_END]]
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// CHECK: [[VAARG_END]]
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// CHECK: [[ADDR:%[a-z._0-9]+]] = phi i128* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
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// CHECK: [[RESULT:%[a-z_0-9]+]] = load i128, i128* [[ADDR]]
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// CHECK: ret i128 [[RESULT]]
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}
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struct bigstruct {
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int a[10];
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};
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struct bigstruct simple_indirect(void) {
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// CHECK-LABEL: define{{.*}} void @simple_indirect
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return va_arg(the_list, struct bigstruct);
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// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
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// CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
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// CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
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// CHECK: [[VAARG_MAYBE_REG]]
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// CHECK-NOT: and i32
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// CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 8
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// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
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// CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
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// CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
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// CHECK: [[VAARG_IN_REG]]
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// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
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// CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
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// CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to %struct.bigstruct**
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// CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
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// CHECK: [[VAARG_ON_STACK]]
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// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
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// CHECK-NOT: and i64
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// CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 8
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// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
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// CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to %struct.bigstruct**
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// CHECK: br label %[[VAARG_END]]
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// CHECK: [[VAARG_END]]
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// CHECK: [[ADDR:%[a-z._0-9]+]] = phi %struct.bigstruct** [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
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// CHECK: load %struct.bigstruct*, %struct.bigstruct** [[ADDR]]
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}
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struct aligned_bigstruct {
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float a;
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long double b;
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};
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struct aligned_bigstruct simple_aligned_indirect(void) {
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// CHECK-LABEL: define{{.*}} void @simple_aligned_indirect
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return va_arg(the_list, struct aligned_bigstruct);
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// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
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// CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
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// CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
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// CHECK: [[VAARG_MAYBE_REG]]
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// CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 8
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// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
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// CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
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// CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
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// CHECK: [[VAARG_IN_REG]]
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// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
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// CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
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// CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to %struct.aligned_bigstruct**
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// CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
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// CHECK: [[VAARG_ON_STACK]]
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// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
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// CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 8
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// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
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// CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to %struct.aligned_bigstruct**
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// CHECK: br label %[[VAARG_END]]
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// CHECK: [[VAARG_END]]
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// CHECK: [[ADDR:%[a-z._0-9]+]] = phi %struct.aligned_bigstruct** [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
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// CHECK: load %struct.aligned_bigstruct*, %struct.aligned_bigstruct** [[ADDR]]
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}
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double simple_double(void) {
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// CHECK-LABEL: define{{.*}} double @simple_double
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return va_arg(the_list, double);
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// CHECK: [[VR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 4)
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// CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[VR_OFFS]], 0
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// CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG]]
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// CHECK: [[VAARG_MAYBE_REG]]
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// CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[VR_OFFS]], 16
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// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 4)
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// CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
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// CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
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// CHECK: [[VAARG_IN_REG]]
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// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 2)
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// CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[VR_OFFS]]
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// CHECK-BE: [[REG_ADDR_ALIGNED:%[a-z_0-9]*]] = getelementptr inbounds i8, i8* [[REG_ADDR]], i64 8
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// CHECK-BE: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR_ALIGNED]] to double*
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// CHECK-LE: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to double*
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// CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
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// CHECK: [[VAARG_ON_STACK]]
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// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
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// CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 8
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// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
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// CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to double*
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// CHECK: br label %[[VAARG_END]]
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// CHECK: [[VAARG_END]]
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// CHECK: [[ADDR:%[a-z._0-9]+]] = phi double* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
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// CHECK: [[RESULT:%[a-z_0-9]+]] = load double, double* [[ADDR]]
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// CHECK: ret double [[RESULT]]
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}
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struct hfa {
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float a, b;
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};
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struct hfa simple_hfa(void) {
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// CHECK-LABEL: define{{.*}} %struct.hfa @simple_hfa
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return va_arg(the_list, struct hfa);
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// CHECK: [[VR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 4)
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// CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[VR_OFFS]], 0
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// CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
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// CHECK: [[VAARG_MAYBE_REG]]
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// CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[VR_OFFS]], 32
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// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 4)
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// CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
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// CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
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// CHECK: [[VAARG_IN_REG]]
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// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 2)
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// CHECK: [[FIRST_REG:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[VR_OFFS]]
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// CHECK-LE: [[EL_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[FIRST_REG]], i64 0
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// CHECK-BE: [[EL_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[FIRST_REG]], i64 12
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// CHECK: [[EL_TYPED:%[a-z_0-9]+]] = bitcast i8* [[EL_ADDR]] to float*
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// CHECK: [[EL_TMPADDR:%[a-z_0-9]+]] = getelementptr inbounds [2 x float], [2 x float]* %[[TMP_HFA:[a-z_.0-9]+]], i64 0, i64 0
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// CHECK: [[EL:%[a-z_0-9]+]] = load float, float* [[EL_TYPED]]
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// CHECK: store float [[EL]], float* [[EL_TMPADDR]]
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// CHECK-LE: [[EL_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[FIRST_REG]], i64 16
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// CHECK-BE: [[EL_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[FIRST_REG]], i64 28
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// CHECK: [[EL_TYPED:%[a-z_0-9]+]] = bitcast i8* [[EL_ADDR]] to float*
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// CHECK: [[EL_TMPADDR:%[a-z_0-9]+]] = getelementptr inbounds [2 x float], [2 x float]* %[[TMP_HFA]], i64 0, i64 1
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// CHECK: [[EL:%[a-z_0-9]+]] = load float, float* [[EL_TYPED]]
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// CHECK: store float [[EL]], float* [[EL_TMPADDR]]
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// CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast [2 x float]* %[[TMP_HFA]] to %struct.hfa*
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// CHECK: br label %[[VAARG_END:[a-z_.0-9]+]]
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// CHECK: [[VAARG_ON_STACK]]
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// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
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// CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 8
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// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
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// CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to %struct.hfa*
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// CHECK: br label %[[VAARG_END]]
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// CHECK: [[VAARG_END]]
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// CHECK: [[ADDR:%[a-z._0-9]+]] = phi %struct.hfa* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
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}
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// Over and under alignment on fundamental types has no effect on parameter
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// passing, so the code generated for va_arg should be the same as for
|
|
// non-aligned fundamental types.
|
|
|
|
typedef int underaligned_int __attribute__((packed,aligned(2)));
|
|
underaligned_int underaligned_int_test(void) {
|
|
// CHECK-LABEL: define{{.*}} i32 @underaligned_int_test()
|
|
return va_arg(the_list, underaligned_int);
|
|
// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
|
|
// CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
|
|
|
|
// CHECK: [[VAARG_MAYBE_REG]]
|
|
// CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 8
|
|
// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
|
|
// CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
|
|
|
|
// CHECK: [[VAARG_IN_REG]]
|
|
// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
|
|
// CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
|
|
// CHECK-BE: [[REG_ADDR_ALIGNED:%[0-9]+]] = getelementptr inbounds i8, i8* [[REG_ADDR]], i64 4
|
|
// CHECK-BE: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR_ALIGNED]] to i32*
|
|
// CHECK-LE: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to i32*
|
|
// CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
|
|
|
|
// CHECK: [[VAARG_ON_STACK]]
|
|
// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 8
|
|
// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK-BE: [[STACK_ALIGNED:%[a-z_0-9]*]] = getelementptr inbounds i8, i8* [[STACK]], i64 4
|
|
// CHECK-BE: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK_ALIGNED]] to i32*
|
|
// CHECK-LE: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to i32*
|
|
// CHECK: br label %[[VAARG_END]]
|
|
|
|
// CHECK: [[VAARG_END]]
|
|
// CHECK: [[ADDR:%[a-z._0-9]+]] = phi i32* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
|
|
// CHECK: [[RESULT:%[a-z_0-9]+]] = load i32, i32* [[ADDR]]
|
|
// CHECK: ret i32 [[RESULT]]
|
|
}
|
|
|
|
typedef int overaligned_int __attribute__((aligned(32)));
|
|
overaligned_int overaligned_int_test(void) {
|
|
// CHECK-LABEL: define{{.*}} i32 @overaligned_int_test()
|
|
return va_arg(the_list, overaligned_int);
|
|
// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
|
|
// CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
|
|
|
|
// CHECK: [[VAARG_MAYBE_REG]]
|
|
// CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 8
|
|
// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
|
|
// CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
|
|
|
|
// CHECK: [[VAARG_IN_REG]]
|
|
// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
|
|
// CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
|
|
// CHECK-BE: [[REG_ADDR_ALIGNED:%[0-9]+]] = getelementptr inbounds i8, i8* [[REG_ADDR]], i64 4
|
|
// CHECK-BE: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR_ALIGNED]] to i32*
|
|
// CHECK-LE: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to i32*
|
|
// CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
|
|
|
|
// CHECK: [[VAARG_ON_STACK]]
|
|
// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 8
|
|
// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK-BE: [[STACK_ALIGNED:%[a-z_0-9]*]] = getelementptr inbounds i8, i8* [[STACK]], i64 4
|
|
// CHECK-BE: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK_ALIGNED]] to i32*
|
|
// CHECK-LE: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to i32*
|
|
// CHECK: br label %[[VAARG_END]]
|
|
|
|
// CHECK: [[VAARG_END]]
|
|
// CHECK: [[ADDR:%[a-z._0-9]+]] = phi i32* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
|
|
// CHECK: [[RESULT:%[a-z_0-9]+]] = load i32, i32* [[ADDR]]
|
|
// CHECK: ret i32 [[RESULT]]
|
|
}
|
|
|
|
typedef long long underaligned_long_long __attribute__((packed,aligned(2)));
|
|
underaligned_long_long underaligned_long_long_test(void) {
|
|
// CHECK-LABEL: define{{.*}} i64 @underaligned_long_long_test()
|
|
return va_arg(the_list, underaligned_long_long);
|
|
// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
|
|
// CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
|
|
|
|
// CHECK: [[VAARG_MAYBE_REG]]
|
|
// CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 8
|
|
// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
|
|
// CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
|
|
|
|
// CHECK: [[VAARG_IN_REG]]
|
|
// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
|
|
// CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
|
|
// CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to i64*
|
|
// CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
|
|
|
|
// CHECK: [[VAARG_ON_STACK]]
|
|
// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 8
|
|
// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to i64*
|
|
// CHECK: br label %[[VAARG_END]]
|
|
|
|
// CHECK: [[VAARG_END]]
|
|
// CHECK: [[ADDR:%[a-z._0-9]+]] = phi i64* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
|
|
// CHECK: [[RESULT:%[a-z_0-9]+]] = load i64, i64* [[ADDR]]
|
|
// CHECK: ret i64 [[RESULT]]
|
|
}
|
|
|
|
typedef long long overaligned_long_long __attribute__((aligned(32)));
|
|
overaligned_long_long overaligned_long_long_test(void) {
|
|
// CHECK-LABEL: define{{.*}} i64 @overaligned_long_long_test()
|
|
return va_arg(the_list, overaligned_long_long);
|
|
// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
|
|
// CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
|
|
|
|
// CHECK: [[VAARG_MAYBE_REG]]
|
|
// CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 8
|
|
// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
|
|
// CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
|
|
|
|
// CHECK: [[VAARG_IN_REG]]
|
|
// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
|
|
// CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
|
|
// CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to i64*
|
|
// CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
|
|
|
|
// CHECK: [[VAARG_ON_STACK]]
|
|
// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 8
|
|
// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to i64*
|
|
// CHECK: br label %[[VAARG_END]]
|
|
|
|
// CHECK: [[VAARG_END]]
|
|
// CHECK: [[ADDR:%[a-z._0-9]+]] = phi i64* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
|
|
// CHECK: [[RESULT:%[a-z_0-9]+]] = load i64, i64* [[ADDR]]
|
|
// CHECK: ret i64 [[RESULT]]
|
|
}
|
|
|
|
typedef __int128 underaligned_int128 __attribute__((packed,aligned(2)));
|
|
underaligned_int128 underaligned_int128_test(void) {
|
|
// CHECK-LABEL: define{{.*}} i128 @underaligned_int128_test()
|
|
return va_arg(the_list, underaligned_int128);
|
|
// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
|
|
// CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
|
|
|
|
// CHECK: [[VAARG_MAYBE_REG]]
|
|
// CHECK: [[ALIGN_REGOFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 15
|
|
// CHECK: [[ALIGNED_REGOFFS:%[a-z_0-9]+]] = and i32 [[ALIGN_REGOFFS]], -16
|
|
// CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[ALIGNED_REGOFFS]], 16
|
|
// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
|
|
// CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
|
|
|
|
// CHECK: [[VAARG_IN_REG]]
|
|
// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
|
|
// CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[ALIGNED_REGOFFS]]
|
|
// CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to i128*
|
|
// CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
|
|
|
|
// CHECK: [[VAARG_ON_STACK]]
|
|
// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[STACKINT:%[a-z_0-9]+]] = ptrtoint i8* [[STACK]] to i64
|
|
// CHECK: [[ALIGN_STACK:%[a-z_0-9]+]] = add i64 [[STACKINT]], 15
|
|
// CHECK: [[ALIGNED_STACK_INT:%[a-z_0-9]+]] = and i64 [[ALIGN_STACK]], -16
|
|
// CHECK: [[ALIGNED_STACK_PTR:%[a-z_0-9]+]] = inttoptr i64 [[ALIGNED_STACK_INT]] to i8*
|
|
// CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[ALIGNED_STACK_PTR]], i64 16
|
|
// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[ALIGNED_STACK_PTR]] to i128*
|
|
// CHECK: br label %[[VAARG_END]]
|
|
|
|
// CHECK: [[VAARG_END]]
|
|
// CHECK: [[ADDR:%[a-z._0-9]+]] = phi i128* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
|
|
// CHECK: [[RESULT:%[a-z_0-9]+]] = load i128, i128* [[ADDR]]
|
|
// CHECK: ret i128 [[RESULT]]
|
|
}
|
|
|
|
typedef __int128 overaligned_int128 __attribute__((aligned(32)));
|
|
overaligned_int128 overaligned_int128_test(void) {
|
|
// CHECK-LABEL: define{{.*}} i128 @overaligned_int128_test()
|
|
return va_arg(the_list, overaligned_int128);
|
|
// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
|
|
// CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
|
|
|
|
// CHECK: [[VAARG_MAYBE_REG]]
|
|
// CHECK: [[ALIGN_REGOFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 15
|
|
// CHECK: [[ALIGNED_REGOFFS:%[a-z_0-9]+]] = and i32 [[ALIGN_REGOFFS]], -16
|
|
// CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[ALIGNED_REGOFFS]], 16
|
|
// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
|
|
// CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
|
|
|
|
// CHECK: [[VAARG_IN_REG]]
|
|
// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
|
|
// CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[ALIGNED_REGOFFS]]
|
|
// CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to i128*
|
|
// CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
|
|
|
|
// CHECK: [[VAARG_ON_STACK]]
|
|
// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[STACKINT:%[a-z_0-9]+]] = ptrtoint i8* [[STACK]] to i64
|
|
// CHECK: [[ALIGN_STACK:%[a-z_0-9]+]] = add i64 [[STACKINT]], 15
|
|
// CHECK: [[ALIGNED_STACK_INT:%[a-z_0-9]+]] = and i64 [[ALIGN_STACK]], -16
|
|
// CHECK: [[ALIGNED_STACK_PTR:%[a-z_0-9]+]] = inttoptr i64 [[ALIGNED_STACK_INT]] to i8*
|
|
// CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[ALIGNED_STACK_PTR]], i64 16
|
|
// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[ALIGNED_STACK_PTR]] to i128*
|
|
// CHECK: br label %[[VAARG_END]]
|
|
|
|
// CHECK: [[VAARG_END]]
|
|
// CHECK: [[ADDR:%[a-z._0-9]+]] = phi i128* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
|
|
// CHECK: [[RESULT:%[a-z_0-9]+]] = load i128, i128* [[ADDR]]
|
|
// CHECK: ret i128 [[RESULT]]
|
|
}
|
|
|
|
// The way that attributes applied to a struct change parameter passing is a
|
|
// little strange, in that the alignment due to attributes is used when
|
|
// calculating the size of the struct, but the alignment is based only on the
|
|
// alignment of the members (which can be affected by attributes). What this
|
|
// means is:
|
|
// * The only effect of the aligned attribute on a struct is to increase its
|
|
// size if the alignment is greater than the member alignment.
|
|
// * The packed attribute is considered as applying to the members, so it will
|
|
// affect the alignment.
|
|
// Additionally the alignment can't go below 8 or above 16, so it's only
|
|
// __int128 that can be affected by a change in alignment.
|
|
|
|
typedef struct __attribute__((packed,aligned(2))) {
|
|
int val;
|
|
} underaligned_int_struct;
|
|
underaligned_int_struct underaligned_int_struct_test(void) {
|
|
// CHECK-LE-LABEL: define{{.*}} i32 @underaligned_int_struct_test()
|
|
// CHECK-BE-LABEL: define{{.*}} i64 @underaligned_int_struct_test()
|
|
return va_arg(the_list, underaligned_int_struct);
|
|
// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
|
|
// CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
|
|
|
|
// CHECK: [[VAARG_MAYBE_REG]]
|
|
// CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 8
|
|
// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
|
|
// CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
|
|
|
|
// CHECK: [[VAARG_IN_REG]]
|
|
// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
|
|
// CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
|
|
// CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to %struct.underaligned_int_struct*
|
|
// CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
|
|
|
|
// CHECK: [[VAARG_ON_STACK]]
|
|
// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 8
|
|
// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to %struct.underaligned_int_struct*
|
|
// CHECK: br label %[[VAARG_END]]
|
|
|
|
// CHECK: [[VAARG_END]]
|
|
// CHECK: [[ADDR:%[a-z._0-9]+]] = phi %struct.underaligned_int_struct* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
|
|
}
|
|
|
|
typedef struct __attribute__((aligned(16))) {
|
|
int val;
|
|
} overaligned_int_struct;
|
|
overaligned_int_struct overaligned_int_struct_test(void) {
|
|
// CHECK-LABEL: define{{.*}} i128 @overaligned_int_struct_test()
|
|
return va_arg(the_list, overaligned_int_struct);
|
|
// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
|
|
// CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
|
|
|
|
// CHECK: [[VAARG_MAYBE_REG]]
|
|
// CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 16
|
|
// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
|
|
// CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
|
|
|
|
// CHECK: [[VAARG_IN_REG]]
|
|
// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
|
|
// CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
|
|
// CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to %struct.overaligned_int_struct*
|
|
// CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
|
|
|
|
// CHECK: [[VAARG_ON_STACK]]
|
|
// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 16
|
|
// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to %struct.overaligned_int_struct*
|
|
// CHECK: br label %[[VAARG_END]]
|
|
|
|
// CHECK: [[VAARG_END]]
|
|
// CHECK: [[ADDR:%[a-z._0-9]+]] = phi %struct.overaligned_int_struct* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
|
|
}
|
|
|
|
typedef struct __attribute__((packed,aligned(2))) {
|
|
long long val;
|
|
} underaligned_long_long_struct;
|
|
underaligned_long_long_struct underaligned_long_long_struct_test(void) {
|
|
// CHECK-LABEL: define{{.*}} i64 @underaligned_long_long_struct_test()
|
|
return va_arg(the_list, underaligned_long_long_struct);
|
|
// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
|
|
// CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
|
|
|
|
// CHECK: [[VAARG_MAYBE_REG]]
|
|
// CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 8
|
|
// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
|
|
// CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
|
|
|
|
// CHECK: [[VAARG_IN_REG]]
|
|
// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
|
|
// CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
|
|
// CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to %struct.underaligned_long_long_struct*
|
|
// CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
|
|
|
|
// CHECK: [[VAARG_ON_STACK]]
|
|
// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 8
|
|
// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to %struct.underaligned_long_long_struct*
|
|
// CHECK: br label %[[VAARG_END]]
|
|
|
|
// CHECK: [[VAARG_END]]
|
|
// CHECK: [[ADDR:%[a-z._0-9]+]] = phi %struct.underaligned_long_long_struct* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
|
|
}
|
|
|
|
typedef struct __attribute__((aligned(16))) {
|
|
long long val;
|
|
} overaligned_long_long_struct;
|
|
overaligned_long_long_struct overaligned_long_long_struct_test(void) {
|
|
// CHECK-LABEL: define{{.*}} i128 @overaligned_long_long_struct_test()
|
|
return va_arg(the_list, overaligned_long_long_struct);
|
|
// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
|
|
// CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
|
|
|
|
// CHECK: [[VAARG_MAYBE_REG]]
|
|
// CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 16
|
|
// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
|
|
// CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
|
|
|
|
// CHECK: [[VAARG_IN_REG]]
|
|
// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
|
|
// CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
|
|
// CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to %struct.overaligned_long_long_struct*
|
|
// CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
|
|
|
|
// CHECK: [[VAARG_ON_STACK]]
|
|
// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 16
|
|
// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to %struct.overaligned_long_long_struct*
|
|
// CHECK: br label %[[VAARG_END]]
|
|
|
|
// CHECK: [[VAARG_END]]
|
|
// CHECK: [[ADDR:%[a-z._0-9]+]] = phi %struct.overaligned_long_long_struct* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
|
|
}
|
|
|
|
typedef struct __attribute__((packed,aligned(2))) {
|
|
__int128 val;
|
|
} underaligned_int128_struct;
|
|
underaligned_int128_struct underaligned_int128_struct_test(void) {
|
|
// CHECK-LABEL: define{{.*}} [2 x i64] @underaligned_int128_struct_test()
|
|
return va_arg(the_list, underaligned_int128_struct);
|
|
// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
|
|
// CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
|
|
|
|
// CHECK: [[VAARG_MAYBE_REG]]
|
|
// CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 16
|
|
// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
|
|
// CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
|
|
|
|
// CHECK: [[VAARG_IN_REG]]
|
|
// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
|
|
// CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
|
|
// CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to %struct.underaligned_int128_struct*
|
|
// CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
|
|
|
|
// CHECK: [[VAARG_ON_STACK]]
|
|
// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 16
|
|
// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to %struct.underaligned_int128_struct*
|
|
// CHECK: br label %[[VAARG_END]]
|
|
|
|
// CHECK: [[VAARG_END]]
|
|
// CHECK: [[ADDR:%[a-z._0-9]+]] = phi %struct.underaligned_int128_struct* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
|
|
}
|
|
|
|
// Overaligning to 32 bytes causes it to be passed indirectly via a pointer
|
|
typedef struct __attribute__((aligned(32))) {
|
|
__int128 val;
|
|
} overaligned_int128_struct;
|
|
overaligned_int128_struct overaligned_int128_struct_test(void) {
|
|
// CHECK-LABEL: define{{.*}} void @overaligned_int128_struct_test(%struct.overaligned_int128_struct* noalias sret(%struct.overaligned_int128_struct) align 32 %agg.result)
|
|
return va_arg(the_list, overaligned_int128_struct);
|
|
// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
|
|
// CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
|
|
|
|
// CHECK: [[VAARG_MAYBE_REG]]
|
|
// CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 8
|
|
// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
|
|
// CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
|
|
|
|
// CHECK: [[VAARG_IN_REG]]
|
|
// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
|
|
// CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
|
|
// CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to %struct.overaligned_int128_struct**
|
|
// CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
|
|
|
|
// CHECK: [[VAARG_ON_STACK]]
|
|
// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 8
|
|
// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to %struct.overaligned_int128_struct**
|
|
// CHECK: br label %[[VAARG_END]]
|
|
|
|
// CHECK: [[VAARG_END]]
|
|
// CHECK: [[ADDR:%[a-z._0-9]+]] = phi %struct.overaligned_int128_struct** [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
|
|
}
|
|
|
|
// Overaligning or underaligning a struct member changes both its alignment and
|
|
// size when passed as an argument.
|
|
|
|
typedef struct {
|
|
int val __attribute__((packed,aligned(2)));
|
|
} underaligned_int_struct_member;
|
|
underaligned_int_struct_member underaligned_int_struct_member_test(void) {
|
|
// CHECK-LE-LABEL: define{{.*}} i32 @underaligned_int_struct_member_test()
|
|
// CHECK-BE-LABEL: define{{.*}} i64 @underaligned_int_struct_member_test()
|
|
return va_arg(the_list, underaligned_int_struct_member);
|
|
// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
|
|
// CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
|
|
|
|
// CHECK: [[VAARG_MAYBE_REG]]
|
|
// CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 8
|
|
// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
|
|
// CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
|
|
|
|
// CHECK: [[VAARG_IN_REG]]
|
|
// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
|
|
// CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
|
|
// CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to %struct.underaligned_int_struct_member*
|
|
// CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
|
|
|
|
// CHECK: [[VAARG_ON_STACK]]
|
|
// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 8
|
|
// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to %struct.underaligned_int_struct_member*
|
|
// CHECK: br label %[[VAARG_END]]
|
|
|
|
// CHECK: [[VAARG_END]]
|
|
// CHECK: [[ADDR:%[a-z._0-9]+]] = phi %struct.underaligned_int_struct_member* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
|
|
}
|
|
|
|
typedef struct {
|
|
int val __attribute__((aligned(16)));
|
|
} overaligned_int_struct_member;
|
|
overaligned_int_struct_member overaligned_int_struct_member_test(void) {
|
|
// CHECK-LABEL: define{{.*}} i128 @overaligned_int_struct_member_test()
|
|
return va_arg(the_list, overaligned_int_struct_member);
|
|
// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
|
|
// CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
|
|
|
|
// CHECK: [[VAARG_MAYBE_REG]]
|
|
// CHECK: [[ALIGN_REGOFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 15
|
|
// CHECK: [[ALIGNED_REGOFFS:%[a-z_0-9]+]] = and i32 [[ALIGN_REGOFFS]], -16
|
|
// CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[ALIGNED_REGOFFS]], 16
|
|
// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
|
|
// CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
|
|
|
|
// CHECK: [[VAARG_IN_REG]]
|
|
// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
|
|
// CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[ALIGNED_REGOFFS]]
|
|
// CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to %struct.overaligned_int_struct_member*
|
|
// CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
|
|
|
|
// CHECK: [[VAARG_ON_STACK]]
|
|
// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[STACKINT:%[a-z_0-9]+]] = ptrtoint i8* [[STACK]] to i64
|
|
// CHECK: [[ALIGN_STACK:%[a-z_0-9]+]] = add i64 [[STACKINT]], 15
|
|
// CHECK: [[ALIGNED_STACK_INT:%[a-z_0-9]+]] = and i64 [[ALIGN_STACK]], -16
|
|
// CHECK: [[ALIGNED_STACK_PTR:%[a-z_0-9]+]] = inttoptr i64 [[ALIGNED_STACK_INT]] to i8*
|
|
// CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[ALIGNED_STACK_PTR]], i64 16
|
|
// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[ALIGNED_STACK_PTR]] to %struct.overaligned_int_struct_member*
|
|
// CHECK: br label %[[VAARG_END]]
|
|
|
|
// CHECK: [[VAARG_END]]
|
|
// CHECK: [[ADDR:%[a-z._0-9]+]] = phi %struct.overaligned_int_struct_member* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
|
|
}
|
|
|
|
typedef struct {
|
|
long long val __attribute__((packed,aligned(2)));
|
|
} underaligned_long_long_struct_member;
|
|
underaligned_long_long_struct_member underaligned_long_long_struct_member_test(void) {
|
|
// CHECK-LABEL: define{{.*}} i64 @underaligned_long_long_struct_member_test()
|
|
return va_arg(the_list, underaligned_long_long_struct_member);
|
|
// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
|
|
// CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
|
|
|
|
// CHECK: [[VAARG_MAYBE_REG]]
|
|
// CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 8
|
|
// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
|
|
// CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
|
|
|
|
// CHECK: [[VAARG_IN_REG]]
|
|
// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
|
|
// CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
|
|
// CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to %struct.underaligned_long_long_struct_member*
|
|
// CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
|
|
|
|
// CHECK: [[VAARG_ON_STACK]]
|
|
// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 8
|
|
// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to %struct.underaligned_long_long_struct_member*
|
|
// CHECK: br label %[[VAARG_END]]
|
|
|
|
// CHECK: [[VAARG_END]]
|
|
// CHECK: [[ADDR:%[a-z._0-9]+]] = phi %struct.underaligned_long_long_struct_member* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
|
|
}
|
|
|
|
typedef struct {
|
|
long long val __attribute__((aligned(16)));
|
|
} overaligned_long_long_struct_member;
|
|
overaligned_long_long_struct_member overaligned_long_long_struct_member_test(void) {
|
|
// CHECK-LABEL: define{{.*}} i128 @overaligned_long_long_struct_member_test()
|
|
return va_arg(the_list, overaligned_long_long_struct_member);
|
|
// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
|
|
// CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
|
|
|
|
// CHECK: [[VAARG_MAYBE_REG]]
|
|
// CHECK: [[ALIGN_REGOFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 15
|
|
// CHECK: [[ALIGNED_REGOFFS:%[a-z_0-9]+]] = and i32 [[ALIGN_REGOFFS]], -16
|
|
// CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[ALIGNED_REGOFFS]], 16
|
|
// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
|
|
// CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
|
|
|
|
// CHECK: [[VAARG_IN_REG]]
|
|
// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
|
|
// CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[ALIGNED_REGOFFS]]
|
|
// CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to %struct.overaligned_long_long_struct_member*
|
|
// CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
|
|
|
|
// CHECK: [[VAARG_ON_STACK]]
|
|
// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[STACKINT:%[a-z_0-9]+]] = ptrtoint i8* [[STACK]] to i64
|
|
// CHECK: [[ALIGN_STACK:%[a-z_0-9]+]] = add i64 [[STACKINT]], 15
|
|
// CHECK: [[ALIGNED_STACK_INT:%[a-z_0-9]+]] = and i64 [[ALIGN_STACK]], -16
|
|
// CHECK: [[ALIGNED_STACK_PTR:%[a-z_0-9]+]] = inttoptr i64 [[ALIGNED_STACK_INT]] to i8*
|
|
// CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[ALIGNED_STACK_PTR]], i64 16
|
|
// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[ALIGNED_STACK_PTR]] to %struct.overaligned_long_long_struct_member*
|
|
// CHECK: br label %[[VAARG_END]]
|
|
|
|
// CHECK: [[VAARG_END]]
|
|
// CHECK: [[ADDR:%[a-z._0-9]+]] = phi %struct.overaligned_long_long_struct_member* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
|
|
}
|
|
|
|
typedef struct {
|
|
__int128 val __attribute__((packed,aligned(2)));
|
|
} underaligned_int128_struct_member;
|
|
underaligned_int128_struct_member underaligned_int128_struct_member_test(void) {
|
|
// CHECK-LABEL: define{{.*}} [2 x i64] @underaligned_int128_struct_member_test()
|
|
return va_arg(the_list, underaligned_int128_struct_member);
|
|
// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
|
|
// CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
|
|
|
|
// CHECK: [[VAARG_MAYBE_REG]]
|
|
// CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 16
|
|
// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
|
|
// CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
|
|
|
|
// CHECK: [[VAARG_IN_REG]]
|
|
// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
|
|
// CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
|
|
// CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to %struct.underaligned_int128_struct_member*
|
|
// CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
|
|
|
|
// CHECK: [[VAARG_ON_STACK]]
|
|
// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 16
|
|
// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to %struct.underaligned_int128_struct_member*
|
|
// CHECK: br label %[[VAARG_END]]
|
|
|
|
// CHECK: [[VAARG_END]]
|
|
// CHECK: [[ADDR:%[a-z._0-9]+]] = phi %struct.underaligned_int128_struct_member* [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
|
|
}
|
|
|
|
// Overaligning to 32 bytes causes it to be passed indirectly via a pointer
|
|
typedef struct {
|
|
__int128 val __attribute__((aligned(32)));
|
|
} overaligned_int128_struct_member;
|
|
overaligned_int128_struct_member overaligned_int128_struct_member_test(void) {
|
|
// CHECK-LABEL: define{{.*}} void @overaligned_int128_struct_member_test(%struct.overaligned_int128_struct_member* noalias sret(%struct.overaligned_int128_struct_member) align 32 %agg.result)
|
|
return va_arg(the_list, overaligned_int128_struct_member);
|
|
// CHECK: [[GR_OFFS:%[a-z_0-9]+]] = load i32, i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[EARLY_ONSTACK:%[a-z_0-9]+]] = icmp sge i32 [[GR_OFFS]], 0
|
|
// CHECK: br i1 [[EARLY_ONSTACK]], label %[[VAARG_ON_STACK:[a-z_.0-9]+]], label %[[VAARG_MAYBE_REG:[a-z_.0-9]+]]
|
|
|
|
// CHECK: [[VAARG_MAYBE_REG]]
|
|
// CHECK: [[NEW_REG_OFFS:%[a-z_0-9]+]] = add i32 [[GR_OFFS]], 8
|
|
// CHECK: store i32 [[NEW_REG_OFFS]], i32* getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 3)
|
|
// CHECK: [[INREG:%[a-z_0-9]+]] = icmp sle i32 [[NEW_REG_OFFS]], 0
|
|
// CHECK: br i1 [[INREG]], label %[[VAARG_IN_REG:[a-z_.0-9]+]], label %[[VAARG_ON_STACK]]
|
|
|
|
// CHECK: [[VAARG_IN_REG]]
|
|
// CHECK: [[REG_TOP:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 1)
|
|
// CHECK: [[REG_ADDR:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[REG_TOP]], i32 [[GR_OFFS]]
|
|
// CHECK: [[FROMREG_ADDR:%[a-z_0-9]+]] = bitcast i8* [[REG_ADDR]] to %struct.overaligned_int128_struct_member**
|
|
// CHECK: br label %[[VAARG_END:[a-z._0-9]+]]
|
|
|
|
// CHECK: [[VAARG_ON_STACK]]
|
|
// CHECK: [[STACK:%[a-z_0-9]+]] = load i8*, i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[NEW_STACK:%[a-z_0-9]+]] = getelementptr inbounds i8, i8* [[STACK]], i64 8
|
|
// CHECK: store i8* [[NEW_STACK]], i8** getelementptr inbounds (%"struct.std::__va_list", %"struct.std::__va_list"* @the_list, i32 0, i32 0)
|
|
// CHECK: [[FROMSTACK_ADDR:%[a-z_0-9]+]] = bitcast i8* [[STACK]] to %struct.overaligned_int128_struct_member**
|
|
// CHECK: br label %[[VAARG_END]]
|
|
|
|
// CHECK: [[VAARG_END]]
|
|
// CHECK: [[ADDR:%[a-z._0-9]+]] = phi %struct.overaligned_int128_struct_member** [ [[FROMREG_ADDR]], %[[VAARG_IN_REG]] ], [ [[FROMSTACK_ADDR]], %[[VAARG_ON_STACK]] ]
|
|
}
|
|
|
|
void check_start(int n, ...) {
|
|
// CHECK-LABEL: define{{.*}} void @check_start(i32 noundef %n, ...)
|
|
|
|
va_list the_list;
|
|
va_start(the_list, n);
|
|
// CHECK: [[THE_LIST:%[a-z_0-9]+]] = alloca %"struct.std::__va_list"
|
|
// CHECK: [[VOIDP_THE_LIST:%[a-z_0-9]+]] = bitcast %"struct.std::__va_list"* [[THE_LIST]] to i8*
|
|
// CHECK: call void @llvm.va_start(i8* [[VOIDP_THE_LIST]])
|
|
}
|
|
|
|
|