67 lines
1.6 KiB
C
67 lines
1.6 KiB
C
|
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -O0 -emit-llvm -o - %s | FileCheck %s
|
||
|
|
|
||
|
|
void use(void *);
|
||
|
|
|
||
|
|
void test_small() {
|
||
|
|
// CHECK-LABEL: define{{.*}} void @test_small()
|
||
|
|
int a[] = {1, 2, 3, 4};
|
||
|
|
// CHECK: call void @llvm.memcpy.{{.*}}
|
||
|
|
use(a);
|
||
|
|
}
|
||
|
|
|
||
|
|
void test_small_same() {
|
||
|
|
// CHECK-LABEL: define{{.*}} void @test_small_same()
|
||
|
|
char a[] = {'a', 'a', 'a', 'a'};
|
||
|
|
// CHECK: call void @llvm.memcpy.{{.*}}
|
||
|
|
use(a);
|
||
|
|
}
|
||
|
|
|
||
|
|
void test_different() {
|
||
|
|
// CHECK-LABEL: define{{.*}} void @test_different()
|
||
|
|
int a[] = {1, 2, 3, 4, 5, 6, 7, 8, 9};
|
||
|
|
// CHECK: call void @llvm.memcpy.{{.*}}
|
||
|
|
use(a);
|
||
|
|
}
|
||
|
|
|
||
|
|
void test_all_zeros() {
|
||
|
|
// CHECK-LABEL: define{{.*}} void @test_all_zeros()
|
||
|
|
int a[16] = {};
|
||
|
|
// CHECK: call void @llvm.memset.{{.*}}
|
||
|
|
use(a);
|
||
|
|
}
|
||
|
|
|
||
|
|
void test_all_a() {
|
||
|
|
// CHECK-LABEL: define{{.*}} void @test_all_a()
|
||
|
|
char a[] = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
|
||
|
|
// CHECK: call void @llvm.memcpy.{{.*}}
|
||
|
|
use(a);
|
||
|
|
}
|
||
|
|
|
||
|
|
void test_most_zeros() {
|
||
|
|
// CHECK-LABEL: define{{.*}} void @test_most_zeros()
|
||
|
|
int a[16] = {0, 0, 1};
|
||
|
|
// CHECK: call void @llvm.memset.{{.*}}
|
||
|
|
// CHECK: store i32 1
|
||
|
|
use(a);
|
||
|
|
}
|
||
|
|
|
||
|
|
void test_most_a() {
|
||
|
|
// CHECK-LABEL: define{{.*}} void @test_most_a()
|
||
|
|
char a[] = "aaaaazaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa";
|
||
|
|
// CHECK: call void @llvm.memcpy.{{.*}}
|
||
|
|
use(a);
|
||
|
|
}
|
||
|
|
|
||
|
|
void test_pointers() {
|
||
|
|
// CHECK-LABEL: define{{.*}} void @test_pointers()
|
||
|
|
void *a[] = {&use, &use, &use, &use, &use, &use};
|
||
|
|
// CHECK: call void @llvm.memset.{{.*}}
|
||
|
|
// CHECK: store i8*
|
||
|
|
// CHECK: store i8*
|
||
|
|
// CHECK: store i8*
|
||
|
|
// CHECK: store i8*
|
||
|
|
// CHECK: store i8*
|
||
|
|
// CHECK: store i8*
|
||
|
|
use(a);
|
||
|
|
}
|