// Verifies that speculative loads from unions do not happen under asan.
// RUN: %clangxx_asan -O0 %s -o %t && ASAN_OPTIONS=detect_leaks=0 %run %t 2>&1
// RUN: %clangxx_asan -O1 %s -o %t && ASAN_OPTIONS=detect_leaks=0 %run %t 2>&1
// RUN: %clangxx_asan -O2 %s -o %t && ASAN_OPTIONS=detect_leaks=0 %run %t 2>&1
// RUN: %clangxx_asan -O3 %s -o %t && ASAN_OPTIONS=detect_leaks=0 %run %t 2>&1

typedef union {
  short q;
  struct {
    short x;
    short y;
    int for_alignment;
  } w;
} U;
int main() {
  char *buf = new char[2];
  buf[0] = buf[1] = 0x0;
  U *u = (U *)buf;
  return  u->q == 0 ? 0 : u->w.y;
}


Disable gvn non-local speculative loads under asan.
Disable gvn non-local speculative loads under asan.

Summary: Fix for https://llvm.org/bugs/show_bug.cgi?id=25550

Differential Revision: http://reviews.llvm.org/D14764

git-svn-id: c199f293c43da69278bea8e88f92242bf3aa95f7@253499 91177308-0d34-0410-b5e6-96231b3b80d8
