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llvm-project/clang/test/CodeGen/builtin-memfns.c

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Reapply patch for adding support for address spaces and added a isVolatile field to memcpy, memmove, and memset. llvm-svn: 100305
2010-04-04 11:10:52 +08:00
// RUN: %clang_cc1 -triple i386-pc-linux-gnu -emit-llvm < %s| FileCheck %s
Implement bzero, memset, memmove builtins. This subsumes Nico Weber's patch and implements bzero in terms of llvm.memset to match llvm-gcc. llvm-svn: 53888
2008-07-22 08:26:45 +08:00
Reapply patch for adding support for address spaces and added a isVolatile field to memcpy, memmove, and memset. llvm-svn: 100305
2010-04-04 11:10:52 +08:00
// 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
Implement bzero, memset, memmove builtins. This subsumes Nico Weber's patch and implements bzero in terms of llvm.memset to match llvm-gcc. llvm-svn: 53888
2008-07-22 08:26:45 +08:00
int main(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;
}