File: pragma-ms-function.c

package info (click to toggle)
llvm-toolchain-15 1%3A15.0.6-4
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,554,644 kB
  • sloc: cpp: 5,922,452; ansic: 1,012,136; asm: 674,362; python: 191,568; objc: 73,855; f90: 42,327; lisp: 31,913; pascal: 11,973; javascript: 10,144; sh: 9,421; perl: 7,447; ml: 5,527; awk: 3,523; makefile: 2,520; xml: 885; cs: 573; fortran: 567
file content (38 lines) | stat: -rw-r--r-- 1,251 bytes parent folder | download | duplicates (13)
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
30
31
32
33
34
35
36
37
38
// RUN: %clang_cc1 -emit-llvm -fms-extensions -o - %s | FileCheck %s

typedef typeof(sizeof(0)) size_t;

void bar(char *s);
void *memset(void *s, int c, size_t n);
void *memcpy(void *d, const void *s, size_t n);

// CHECK: define{{.*}} void @foo1({{.*}}) #[[NO_NOBUILTIN:[0-9]+]]
void foo1(char *s, char *d, size_t n) {
  bar(s);
  memset(s, 0, n);
  memcpy(d, s, n);
}

#pragma function(strlen, memset)

// CHECK: define{{.*}} void @foo2({{.*}}) #[[NOBUILTIN_MEMSET:[0-9]+]]
void foo2(char *s, char *d, size_t n) {
  bar(s);
  memset(s, 1, n);
  memcpy(d, s, n);
}

#pragma function(memcpy)

// CHECK: define{{.*}} void @foo3({{.*}}) #[[NOBUILTIN_MEMSET_MEMCPY:[0-9]+]]
void foo3(char *s, char *d, size_t n) {
  bar(s);
  memset(s, 2, n);
  memcpy(d, s, n);
}

// CHECK-NOT: attributes #[[NO_NOBUILTIN]] = {{{.*}}"no-builtin-memset"{{.*}}}
// CHECK-NOT: attributes #[[NO_NOBUILTIN]] = {{{.*}}"no-builtin-memcpy"{{.*}}"no-builtin-memset"{{.*}}}
// CHECK:     attributes #[[NOBUILTIN_MEMSET]] = {{{.*}}"no-builtin-memset"{{.*}}}
// CHECK-NOT: attributes #[[NOBUILTIN_MEMSET]] = {{{.*}}"no-builtin-memcpy"{{.*}}"no-builtin-memset"{{.*}}}
// CHECK:     attributes #[[NOBUILTIN_MEMSET_MEMCPY]] = {{{.*}}"no-builtin-memcpy"{{.*}}"no-builtin-memset"{{.*}}}