/* APPLE LOCAL file 4356747 stack realign */ /* { dg-do run { target i?86-*-darwin* i[6789]86-*-* } } */ /* APPLE LOCAL x86_64 */ /* { dg-require-effective-target ilp32 } */ /* APPLE LOCAL Note: if/when this file arrives in a merge, the FSF version probably won't have the -fnested-functions option, and it's required on OS X. */ /* { dg-options "-std=gnu99 -fnested-functions -mstackrealign" } */ #include <stdio.h> #include <stdlib.h> #include <emmintrin.h> __m128i __attribute__ ((__noinline__)) vector_using_function () { volatile __m128i vx; /* We want to force a vector-aligned store into the stack. */ vx = _mm_xor_si128 (vx, vx); return vx; } int __attribute__ ((__noinline__)) self_aligning_function (int x, int y) { __m128i ignored = vector_using_function (); return (x + y); } int g_1 = 20; int g_2 = 22; int main () { int result; asm ("pushl %esi"); /* Disalign runtime stack. */ result = self_aligning_function (g_1, g_2); asm ("popl %esi"); if (result != 42) abort (); }