128 lines
3.2 KiB
C
128 lines
3.2 KiB
C
|
// RUN: %clang_cc1 -triple i386-pc-linux-gnu -emit-llvm < %s| FileCheck %s
|
||
|
|
||
|
typedef __WCHAR_TYPE__ wchar_t;
|
||
|
typedef __SIZE_TYPE__ size_t;
|
||
|
|
||
|
void *memcpy(void *, void const *, size_t);
|
||
|
void *memccpy(void *, void const *, int, size_t);
|
||
|
|
||
|
// CHECK: @test1
|
||
|
// CHECK: call void @llvm.memset.p0i8.i32
|
||
|
// CHECK: call void @llvm.memset.p0i8.i32
|
||
|
// CHECK: call void @llvm.memcpy.p0i8.p0i8.i32
|
||
|
// CHECK: call void @llvm.memmove.p0i8.p0i8.i32
|
||
|
// CHECK-NOT: __builtin
|
||
|
// CHECK: ret
|
||
|
int test1(int argc, char **argv) {
|
||
|
unsigned char a = 0x11223344;
|
||
|
unsigned char b = 0x11223344;
|
||
|
__builtin_bzero(&a, sizeof(a));
|
||
|
__builtin_memset(&a, 0, sizeof(a));
|
||
|
__builtin_memcpy(&a, &b, sizeof(a));
|
||
|
__builtin_memmove(&a, &b, sizeof(a));
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
// rdar://9289468
|
||
|
|
||
|
// CHECK: @test2
|
||
|
// CHECK: call void @llvm.memcpy.p0i8.p0i8.i32
|
||
|
char* test2(char* a, char* b) {
|
||
|
return __builtin_memcpy(a, b, 4);
|
||
|
}
|
||
|
|
||
|
// CHECK: @test3
|
||
|
// CHECK: call void @llvm.memset
|
||
|
void test3(char *P) {
|
||
|
__builtin___memset_chk(P, 42, 128, 128);
|
||
|
}
|
||
|
|
||
|
// CHECK: @test4
|
||
|
// CHECK: call void @llvm.memcpy
|
||
|
void test4(char *P, char *Q) {
|
||
|
__builtin___memcpy_chk(P, Q, 128, 128);
|
||
|
}
|
||
|
|
||
|
// CHECK: @test5
|
||
|
// CHECK: call void @llvm.memmove
|
||
|
void test5(char *P, char *Q) {
|
||
|
__builtin___memmove_chk(P, Q, 128, 128);
|
||
|
}
|
||
|
|
||
|
// CHECK: @test6
|
||
|
// CHECK: call void @llvm.memcpy
|
||
|
int test6(char *X) {
|
||
|
return __builtin___memcpy_chk(X, X, 42, 42) != 0;
|
||
|
}
|
||
|
|
||
|
// CHECK: @test7
|
||
|
// PR12094
|
||
|
int test7(int *p) {
|
||
|
struct snd_pcm_hw_params_t* hwparams; // incomplete type.
|
||
|
|
||
|
// CHECK: call void @llvm.memset{{.*}} align 4 {{.*}}256, i1 false)
|
||
|
__builtin_memset(p, 0, 256); // Should be alignment = 4
|
||
|
|
||
|
// CHECK: call void @llvm.memset{{.*}} align 1 {{.*}}256, i1 false)
|
||
|
__builtin_memset((char*)p, 0, 256); // Should be alignment = 1
|
||
|
|
||
|
__builtin_memset(hwparams, 0, 256); // No crash alignment = 1
|
||
|
// CHECK: call void @llvm.memset{{.*}} align 1{{.*}}256, i1 false)
|
||
|
}
|
||
|
|
||
|
// <rdar://problem/11314941>
|
||
|
// Make sure we don't over-estimate the alignment of fields of
|
||
|
// packed structs.
|
||
|
struct PS {
|
||
|
int modes[4];
|
||
|
} __attribute__((packed));
|
||
|
struct PS ps;
|
||
|
void test8(int *arg) {
|
||
|
// CHECK: @test8
|
||
|
// CHECK: call void @llvm.memcpy{{.*}} align 4 {{.*}} align 1 {{.*}} 16, i1 false)
|
||
|
__builtin_memcpy(arg, ps.modes, sizeof(struct PS));
|
||
|
}
|
||
|
|
||
|
__attribute((aligned(16))) int x[4], y[4];
|
||
|
void test9() {
|
||
|
// CHECK: @test9
|
||
|
// CHECK: call void @llvm.memcpy{{.*}} align 16 {{.*}} align 16 {{.*}} 16, i1 false)
|
||
|
__builtin_memcpy(x, y, sizeof(y));
|
||
|
}
|
||
|
|
||
|
wchar_t dest;
|
||
|
wchar_t src;
|
||
|
|
||
|
// CHECK-LABEL: @test10
|
||
|
// FIXME: Consider lowering these to llvm.memcpy / llvm.memmove.
|
||
|
void test10() {
|
||
|
// CHECK: call i32* @wmemcpy(i32* @dest, i32* @src, i32 4)
|
||
|
__builtin_wmemcpy(&dest, &src, 4);
|
||
|
|
||
|
// CHECK: call i32* @wmemmove(i32* @dest, i32* @src, i32 4)
|
||
|
__builtin_wmemmove(&dest, &src, 4);
|
||
|
}
|
||
|
|
||
|
// CHECK-LABEL: @test11
|
||
|
void test11() {
|
||
|
typedef struct { int a; } b;
|
||
|
int d;
|
||
|
b e;
|
||
|
// CHECK: call void @llvm.memcpy{{.*}}(
|
||
|
memcpy(&d, (char *)&e.a, sizeof(e));
|
||
|
}
|
||
|
|
||
|
// CHECK-LABEL: @test12
|
||
|
extern char dest_array[];
|
||
|
extern char src_array[];
|
||
|
void test12() {
|
||
|
// CHECK: call void @llvm.memcpy{{.*}}(
|
||
|
memcpy(&dest_array, &dest_array, 2);
|
||
|
}
|
||
|
|
||
|
// CHECK-LABEL: @test13
|
||
|
void test13(char *d, char *s, int c, size_t n) {
|
||
|
// CHECK: call i8* @memccpy
|
||
|
memccpy(d, s, c, n);
|
||
|
}
|