|| !lang_hooks.decls.ok_for_sibcall (fndecl))
try_tail_call = 0;
- /* Ensure current function's preferred stack
- boundary is at least what we need. */
+ /* Ensure current function's preferred stack boundary is at least
+ what we need. Stack alignment may also increase preferred stack
+ boundary. */
if (crtl->preferred_stack_boundary < preferred_stack_boundary)
crtl->preferred_stack_boundary = preferred_stack_boundary;
+ else
+ preferred_stack_boundary = crtl->preferred_stack_boundary;
preferred_unit_stack_boundary = preferred_stack_boundary / BITS_PER_UNIT;
--- /dev/null
+/* PR middle-end/37010 */
+/* { dg-do run { target { { i?86-*-* x86_64-*-* } && ilp32 } } } */
+/* { dg-options "-msse2 -mpreferred-stack-boundary=2" } */
+
+#include <emmintrin.h>
+#include "cpuid.h"
+
+typedef __PTRDIFF_TYPE__ ptrdiff_t;
+typedef float __m128 __attribute__ ((__vector_size__ (16), __may_alias__));
+typedef int aligned __attribute__((aligned(16)));
+
+extern void abort (void);
+
+__m128 r;
+
+int
+__attribute__ ((noinline))
+check_int (int *i, int align)
+{
+ *i = 20;
+ if ((((ptrdiff_t) i) & (align - 1)) != 0)
+ {
+ abort ();
+ }
+ return *i;
+}
+
+void
+__attribute__ ((noinline))
+foo (__m128 x, __m128 y ,__m128 z ,__m128 a, int size)
+{
+ aligned i;
+
+ if (size != 5 || check_int (&i, __alignof__(i)) != i)
+ abort ();
+
+ r = a;
+}
+
+int
+main (void)
+{
+ __m128 x = { 1.0 };
+ unsigned int eax, ebx, ecx, edx;
+
+ if (!__get_cpuid (1, &eax, &ebx, &ecx, &edx))
+ return 0;
+
+ /* Run SSE2 test only if host has SSE2 support. */
+ if (edx & bit_SSE2)
+ {
+ foo (x, x, x, x, 5);
+
+ if (__builtin_memcmp (&r, &x, sizeof (r)))
+ abort ();
+ }
+
+ return 0;
+}