File: memcpy-inline-builtin-mutliple-decl.c

package info (click to toggle)
swiftlang 6.1.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 2,791,604 kB
  • sloc: cpp: 9,901,740; ansic: 2,201,431; asm: 1,091,827; python: 308,252; objc: 82,166; f90: 80,126; lisp: 38,358; pascal: 25,559; sh: 20,429; ml: 5,058; perl: 4,745; makefile: 4,484; awk: 3,535; javascript: 3,018; xml: 918; fortran: 664; cs: 573; ruby: 396
file content (29 lines) | stat: -rw-r--r-- 932 bytes parent folder | download | duplicates (9) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
 
// RUN: %clang_cc1 -triple i686-w64-mingw32 -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