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1022358
2012 May 29
2
[LLVMdev] How to prevent insertion of memcpy()
Hi,
I have the following program:
// test.c
#include <stdlib.h>
struct foo_t {
int x[1024];
};
__thread struct foo_t g_foo;
void bar(struct foo_t* foo) {
g_foo = *foo;
}
int main() {
struct foo_t* f = (struct foo_t*)malloc(sizeof(struct foo_t));
bar(f);
return 0;
}
When I compile it with clang I see that it inserts memcpy() in function
bar():
$ clang -v
clang version 3.2 (trunk