| // RUN: %clang_cc1 -triple i686-w64-mingw32 -S -emit-llvm -disable-llvm-passes -o - %s | FileCheck %s |
| // |
| // Verifies that clang detects memcpy inline version and uses it instead of the builtin. |
| // Checks that clang correctly walks through multiple forward declaration. |
| |
| typedef unsigned int size_t; |
| |
| void *memcpy(void *_Dst, const void *_Src, size_t _Size); |
| |
| extern __inline__ __attribute__((__always_inline__, __gnu_inline__)) __attribute__((__artificial__)) |
| void *memcpy(void *__dst, const void *__src, size_t __n) |
| { |
| return __builtin___memcpy_chk(__dst, __src, __n, __builtin_object_size((__dst), ((0) > 0) && (2 > 1))); |
| } |
| |
| void *memcpy(void *_Dst, const void *_Src, size_t _Size); |
| |
| char *a, *b; |
| void func(void) { |
| memcpy(a, b, 42); |
| } |
| |
| // CHECK-LABEL: define {{.*}} @func( |
| // CHECK: call ptr @memcpy.inline |
| |
| // CHECK-LABEL: declare {{.*}} @memcpy( |
| |
| // CHECK-LABEL: define {{.*}} @memcpy.inline( |
| // CHECK: call ptr @__memcpy_chk |
