diff options
Diffstat (limited to 'clang/test/CodeGen/builtin-memfns.c')
-rw-r--r-- | clang/test/CodeGen/builtin-memfns.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/clang/test/CodeGen/builtin-memfns.c b/clang/test/CodeGen/builtin-memfns.c new file mode 100644 index 0000000..72d3406 --- /dev/null +++ b/clang/test/CodeGen/builtin-memfns.c @@ -0,0 +1,65 @@ +// RUN: %clang_cc1 -triple i386-pc-linux-gnu -emit-llvm < %s| FileCheck %s + +// 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{{.*}}256, i32 4, i1 false) + __builtin_memset(p, 0, 256); // Should be alignment = 4 + + // CHECK: call void @llvm.memset{{.*}}256, i32 1, 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{{.*}}256, i32 1, i1 false) +} |