forked from OSchip/llvm-project
117 lines
3.4 KiB
C
117 lines
3.4 KiB
C
// RUN: %clang_cc1 -no-opaque-pointers -triple x86_64 -emit-llvm %s \
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// RUN: -o - | FileCheck -check-prefixes=CHECK,NATIVE %s
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// RUN: %clang_cc1 -no-opaque-pointers -triple riscv32 -target-feature -a -emit-llvm %s \
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// RUN: -o - | FileCheck -check-prefixes=CHECK,LIBCALL %s
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void foo(int x)
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{
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_Atomic(int) i = 0;
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_Atomic(short) j = 0;
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// Check that multiply / divides on atomics produce a cmpxchg loop
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i *= 2;
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// NATIVE: mul nsw i32
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// NATIVE: cmpxchg i32* {{.*}} seq_cst, align 4
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// LIBCALL: mul nsw i32
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// LIBCALL: i1 @__atomic_compare_exchange(i32 noundef 4,
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i /= 2;
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// NATIVE: sdiv i32
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// NATIVE: cmpxchg i32* {{.*}} seq_cst, align 4
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// LIBCALL: sdiv i32
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// LIBCALL: i1 @__atomic_compare_exchange(i32 noundef 4,
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j /= x;
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// NATIVE: sdiv i32
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// NATIVE: cmpxchg i16* {{.*}} seq_cst, align 2
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// LIBCALL: sdiv i32
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// LIBCALL: i1 @__atomic_compare_exchange(i32 noundef 2,
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}
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// LIBCALL: declare void @__atomic_load(i32, i8*, i8*, i32) [[LC_ATTRS:#[0-9]+]]
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// LIBCALL: declare i1 @__atomic_compare_exchange(i32, i8*, i8*, i8*, i32, i32) [[LC_ATTRS:#[0-9]+]]
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extern _Atomic _Bool b;
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_Bool bar(void) {
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// NATIVE-LABEL: @bar
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// NATIVE: %[[load:.*]] = load atomic i8, i8* @b seq_cst, align 1
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// NATIVE: %[[tobool:.*]] = trunc i8 %[[load]] to i1
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// NATIVE: ret i1 %[[tobool]]
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// LIBCALL-LABEL: @bar
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// LIBCALL: call void @__atomic_load(i32 noundef 1, i8* noundef @b, i8* noundef %atomic-temp, i32 noundef 5)
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// LIBCALL: %[[load:.*]] = load i8, i8* %atomic-temp
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// LIBCALL: %[[tobool:.*]] = trunc i8 %[[load]] to i1
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// LIBCALL: ret i1 %[[tobool]]
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return b;
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}
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extern _Atomic(_Complex int) x;
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void baz(int y) {
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// NATIVE-LABEL: @baz
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// NATIVE: store atomic i64 {{.*}} seq_cst, align 8
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// LIBCALL-LABEL: @baz
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// LIBCALL: call void @__atomic_store
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x += y;
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}
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// LIBCALL: declare void @__atomic_store(i32, i8*, i8*, i32) [[LC_ATTRS:#[0-9]+]]
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_Atomic(int) compound_add(_Atomic(int) in) {
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// CHECK-LABEL: @compound_add
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// CHECK: [[OLD:%.*]] = atomicrmw add i32* {{.*}}, i32 5 seq_cst, align 4
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// CHECK: [[NEW:%.*]] = add i32 [[OLD]], 5
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// CHECK: ret i32 [[NEW]]
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return (in += 5);
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}
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_Atomic(int) compound_sub(_Atomic(int) in) {
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// CHECK-LABEL: @compound_sub
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// CHECK: [[OLD:%.*]] = atomicrmw sub i32* {{.*}}, i32 5 seq_cst, align 4
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// CHECK: [[NEW:%.*]] = sub i32 [[OLD]], 5
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// CHECK: ret i32 [[NEW]]
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return (in -= 5);
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}
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_Atomic(int) compound_xor(_Atomic(int) in) {
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// CHECK-LABEL: @compound_xor
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// CHECK: [[OLD:%.*]] = atomicrmw xor i32* {{.*}}, i32 5 seq_cst, align 4
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// CHECK: [[NEW:%.*]] = xor i32 [[OLD]], 5
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// CHECK: ret i32 [[NEW]]
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return (in ^= 5);
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}
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_Atomic(int) compound_or(_Atomic(int) in) {
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// CHECK-LABEL: @compound_or
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// CHECK: [[OLD:%.*]] = atomicrmw or i32* {{.*}}, i32 5 seq_cst, align 4
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// CHECK: [[NEW:%.*]] = or i32 [[OLD]], 5
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// CHECK: ret i32 [[NEW]]
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return (in |= 5);
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}
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_Atomic(int) compound_and(_Atomic(int) in) {
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// CHECK-LABEL: @compound_and
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// CHECK: [[OLD:%.*]] = atomicrmw and i32* {{.*}}, i32 5 seq_cst, align 4
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// CHECK: [[NEW:%.*]] = and i32 [[OLD]], 5
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// CHECK: ret i32 [[NEW]]
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return (in &= 5);
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}
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_Atomic(int) compound_mul(_Atomic(int) in) {
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// NATIVE-LABEL: @compound_mul
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// NATIVE: cmpxchg i32* {{%.*}}, i32 {{%.*}}, i32 [[NEW:%.*]] seq_cst seq_cst, align 4
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// NATIVE: ret i32 [[NEW]]
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// LIBCALL-LABEL: @compound_mul
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// LIBCALL: i1 @__atomic_compare_exchange(i32 noundef 4,
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return (in *= 5);
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}
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// LIBCALL: [[LC_ATTRS]] = { nounwind willreturn }
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