forked from OSchip/llvm-project
59 lines
5.0 KiB
C++
59 lines
5.0 KiB
C++
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -ftrivial-auto-var-init=pattern -ftrivial-auto-var-init-stop-after=1 %s -emit-llvm -o - | FileCheck %s -check-prefix=PATTERN-STOP-AFTER-1-SCALAR
|
|
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -ftrivial-auto-var-init=pattern -ftrivial-auto-var-init-stop-after=2 %s -emit-llvm -o - | FileCheck %s -check-prefix=PATTERN-STOP-AFTER-2-ARRAY
|
|
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -ftrivial-auto-var-init=pattern -ftrivial-auto-var-init-stop-after=3 %s -emit-llvm -o - | FileCheck %s -check-prefix=PATTERN-STOP-AFTER-3-VLA
|
|
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -ftrivial-auto-var-init=pattern -ftrivial-auto-var-init-stop-after=4 %s -emit-llvm -o - | FileCheck %s -check-prefix=PATTERN-STOP-AFTER-4-POINTER
|
|
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -ftrivial-auto-var-init=pattern -ftrivial-auto-var-init-stop-after=5 %s -emit-llvm -o - | FileCheck %s -check-prefix=PATTERN-STOP-AFTER-5-BUILTIN
|
|
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -ftrivial-auto-var-init=zero -ftrivial-auto-var-init-stop-after=1 %s -emit-llvm -o - | FileCheck %s -check-prefix=ZERO-STOP-AFTER-1-SCALAR
|
|
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -ftrivial-auto-var-init=zero -ftrivial-auto-var-init-stop-after=2 %s -emit-llvm -o - | FileCheck %s -check-prefix=ZERO-STOP-AFTER-2-ARRAY
|
|
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -ftrivial-auto-var-init=zero -ftrivial-auto-var-init-stop-after=3 %s -emit-llvm -o - | FileCheck %s -check-prefix=ZERO-STOP-AFTER-3-VLA
|
|
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -ftrivial-auto-var-init=zero -ftrivial-auto-var-init-stop-after=4 %s -emit-llvm -o - | FileCheck %s -check-prefix=ZERO-STOP-AFTER-4-POINTER
|
|
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -ftrivial-auto-var-init=zero -ftrivial-auto-var-init-stop-after=5 %s -emit-llvm -o - | FileCheck %s -check-prefix=ZERO-STOP-AFTER-5-BUILTIN
|
|
|
|
#define ARRLEN 10
|
|
|
|
typedef struct {
|
|
int i;
|
|
char c;
|
|
} S;
|
|
|
|
int foo(unsigned n) {
|
|
// scalar variable
|
|
long a = 888;
|
|
// array
|
|
S arr[ARRLEN];
|
|
// VLA
|
|
S vla[n];
|
|
// pointer
|
|
void *p;
|
|
// builtin
|
|
p = __builtin_alloca(sizeof(unsigned long long) * n);
|
|
// PATTERN-STOP-AFTER-1-SCALAR: store i64 -6148914691236517206, i64* %a, align 8
|
|
// PATTERN-STOP-AFTER-1-SCALAR-NOT: call void @llvm.memset.p0i8.i64(i8* align 16 %0, i8 -86, i64 80, i1 false)
|
|
// PATTERN-STOP-AFTER-2-ARRAY: %0 = bitcast [10 x %struct.S]* %arr to i8*
|
|
// PATTERN-STOP-AFTER-2-ARRAY-NEXT: call void @llvm.memset.p0i8.i64(i8* align 16 %0, i8 -86, i64 80, i1 false)
|
|
// PATTERN-STOP-AFTER-2-ARRAY-NOT: vla-init.loop:
|
|
// PATTERN-STOP-AFTER-3-VLA: vla-init.loop:
|
|
// PATTERN-STOP-AFTER-3-VLA-NEXT: %vla.cur = phi i8* [ %vla.begin, %vla-setup.loop ], [ %vla.next, %vla-init.loop ]
|
|
// PATTERN-STOP-AFTER-3-VLA-NEXT-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 %vla.cur, i8* align 4 bitcast ({ i32, i8, [3 x i8] }* @__const._Z3fooj.vla to i8*), i64 8, i1 false)
|
|
// PATTERN-STOP-AFTER-3-VLA-NOT: store i8* inttoptr (i64 -6148914691236517206 to i8*), i8** %p, align 8
|
|
// PATTERN-STOP-AFTER-4-POINTER: store i8* inttoptr (i64 -6148914691236517206 to i8*), i8** %p, align 8
|
|
// PATTERN-STOP-AFTER-4-POINTER-NOT: call void @llvm.memset.p0i8.i64(i8* align 16 %6, i8 -86, i64 %mul, i1 false)
|
|
// PATTERN-STOP-AFTER-5-BUILTIN: call void @llvm.memset.p0i8.i64(i8* align 16 %6, i8 -86, i64 %mul, i1 false)
|
|
// PATTERN-STOP-AFTER-5-BUILTIN-MESSAGES: warning: -ftrivial-auto-var-init-stop-after=5 has been enabled to limit the number of times ftrivial-auto-var-init=pattern gets applied.
|
|
|
|
// ZERO-STOP-AFTER-1-SCALAR: store i64 0, i64* %a, align 8
|
|
// ZERO-STOP-AFTER-1-SCALAR-NOT: call void @llvm.memset.p0i8.i64(i8* align 16 %0, i8 0, i64 80, i1 false)
|
|
// ZERO-STOP-AFTER-2-ARRAY: %0 = bitcast [10 x %struct.S]* %arr to i8*
|
|
// ZERO-STOP-AFTER-2-ARRAY-NEXT: call void @llvm.memset.p0i8.i64(i8* align 16 %0, i8 0, i64 80, i1 false)
|
|
// ZERO-STOP-AFTER-2-ARRAY-NOT: %call void @llvm.memset.p0i8.i64(i8* align 16 %5, i8 0, i64 %4, i1 false)
|
|
// ZERO-STOP-AFTER-3-VLA: %5 = bitcast %struct.S* %vla to i8*
|
|
// ZERO-STOP-AFTER-3-VLA-NEXT: call void @llvm.memset.p0i8.i64(i8* align 16 %5, i8 0, i64 %4, i1 false)
|
|
// ZERO-STOP-AFTER-3-VLA-NOT: store i8* null, i8** %p, align 8
|
|
// ZERO-STOP-AFTER-4-POINTER: store i8* null, i8** %p, align 8
|
|
// ZERO-STOP-AFTER-4-POINTER-NOT: call void @llvm.memset.p0i8.i64(i8* align 16 %7, i8 0, i64 %mul, i1 false)
|
|
// ZERO-STOP-AFTER-5-BUILTIN: %7 = alloca i8, i64 %mul, align 16
|
|
// ZERO-STOP-AFTER-5-BUILTIN-NEXT: call void @llvm.memset.p0i8.i64(i8* align 16 %7, i8 0, i64 %mul, i1 false)
|
|
// ZERO-STOP-AFTER-5-BUILTIN-MESSAGES: warnings: -ftrivial-auto-var-init-stop-after=5 has been enabled to limit the number of times ftrivial-auto-var-init=zero gets applied.
|
|
return 0;
|
|
}
|