From ac255441a3e973a974d1ab70d00a9b7269103214 Mon Sep 17 00:00:00 2001
From: jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Tue, 19 Apr 2011 16:49:19 +0000
Subject: [PATCH 149/200] 	PR target/48678
 	* config/i386/i386.md (movstrict<mode>): FAIL if operands[0]
 	is a SUBREG with non-MODE_INT mode inside of it.

	* gcc.target/i386/pr48678.c: New test.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_6-branch@172723 138bc75d-0d04-0410-961f-82ee72b054a4

index b50a52a..c50002e 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -2408,6 +2408,9 @@
 {
   if (TARGET_PARTIAL_REG_STALL && optimize_function_for_speed_p (cfun))
     FAIL;
+  if (GET_CODE (operands[0]) == SUBREG
+      && GET_MODE_CLASS (GET_MODE (SUBREG_REG (operands[0]))) != MODE_INT)
+    FAIL;
   /* Don't generate memory->memory moves, go through a register */
   if (MEM_P (operands[0]) && MEM_P (operands[1]))
     operands[1] = force_reg (<MODE>mode, operands[1]);
new file mode 100644
index 0000000..6f6727f
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr48678.c
@@ -0,0 +1,16 @@
+/* PR target/48678 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -msse2" } */
+
+#include <emmintrin.h>
+
+typedef short T __attribute__((may_alias));
+struct S { __m128i d; };
+
+__m128i
+foo (short *x, struct S *y, __m128i *z)
+{
+  struct S s = *y;
+  ((T *) &s.d)[0] = *x;
+  return _mm_cmpeq_epi16 (s.d, *z);
+}
-- 
1.7.0.4