derek.holloway
7502bf64a4
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64 lines
2.1 KiB
C
64 lines
2.1 KiB
C
// RUN: %clang_cc1 -emit-llvm -o - %s | FileCheck %s
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typedef typeof(sizeof(0)) size_t;
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void bar(char *s);
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void *memset(void *s, int c, size_t n);
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void *memcpy(void *d, const void *s, size_t n);
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void *memmove(void *d, const void *s, size_t n);
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// CHECK: define{{.*}} void @foo1({{.*}}) #[[NO_NOBUILTIN:[0-9]+]]
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// CHECK: call void @bar
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// CHECK: call void @llvm.memset
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// CHECK: call void @llvm.memcpy
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// CHECK: call void @llvm.memmove
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void foo1(char *s, char *d, size_t n) {
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bar(s);
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memset(s, 0, n);
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memcpy(d, s, n);
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memmove(d, s, n);
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}
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// CHECK: define{{.*}} void @foo2({{.*}}) #[[NOBUILTIN_MEMSET:[0-9]+]]
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// CHECK: call void @bar
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// CHECK: {{.*}}call {{.*}} @memset
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// CHECK: call void @llvm.memcpy
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// CHECK: call void @llvm.memmove
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void foo2(char *s, char *d, size_t n) __attribute__((no_builtin("memset"))) {
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bar(s);
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memset(s, 1, n);
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memcpy(d, s, n);
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memmove(d, s, n);
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}
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// CHECK: define{{.*}} void @foo3({{.*}}) #[[NOBUILTIN_MEMSET_MEMCPY:[0-9]+]]
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// CHECK: call void @bar
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// CHECK: {{.*}}call {{.*}} @memset
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// CHECK: {{.*}}call {{.*}} @memcpy
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// CHECK: call void @llvm.memmove
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void foo3(char *s, char *d, size_t n) __attribute__((no_builtin("memset", "memcpy"))) {
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bar(s);
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memset(s, 2, n);
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memcpy(d, s, n);
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memmove(d, s, n);
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}
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// CHECK: define{{.*}} void @foo4({{.*}}) #[[NOBUILTINS:[0-9]+]]
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// CHECK: call void @bar
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// CHECK: {{.*}}call {{.*}} @memset
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// CHECK: {{.*}}call {{.*}} @memcpy
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// CHECK: {{.*}}call {{.*}} @memmove
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void foo4(char *s, char *d, size_t n) __attribute__((no_builtin)) {
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bar(s);
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memset(s, 2, n);
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memcpy(d, s, n);
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memmove(s, d, n);
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}
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// CHECK-NOT: attributes #[[NO_NOBUILTIN]] = {{{.*}}"no-builtin-memset"{{.*}}}
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// CHECK-NOT: attributes #[[NO_NOBUILTIN]] = {{{.*}}"no-builtin-memcpy"{{.*}}"no-builtin-memset"{{.*}}}
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// CHECK-NOT: attributes #[[NO_NOBUILTIN]] = {{{.*}}"no-builtins"{{.*}}}
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// CHECK: attributes #[[NOBUILTIN_MEMSET]] = {{{.*}}"no-builtin-memset"{{.*}}}
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// CHECK: attributes #[[NOBUILTIN_MEMSET_MEMCPY]] = {{{.*}}"no-builtin-memcpy"{{.*}}"no-builtin-memset"{{.*}}}
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// CHECK: attributes #[[NOBUILTINS]] = {{{.*}}"no-builtins"{{.*}}}
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