From: Richard Guenther <rguenther@suse.de>
Date: Tue, 28 Feb 2012 15:28:32 +0000 (+0000)
Subject: re PR target/52407 (sse2 simd uint32_t and int64_t and stack variable initialization)
X-Git-Tag: releases/gcc-4.7.0~171
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=8eef33ca3d454683efe712356b9845ef00cbaf36;p=thirdparty%2Fgcc.git

re PR target/52407 (sse2 simd uint32_t and int64_t and stack variable initialization)

2012-02-28  Richard Guenther  <rguenther@suse.de>

	PR target/52407
	* config/i386/i386.c (ix86_expand_vector_set): Fix element
	ordering for the VEC_CONCAT for two element vectors for
	V2SFmode, V2SImode and V2DImode.

	* gcc.dg/torture/pr52407.c: New testcase.

From-SVN: r184627
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index f725ed580e1b..8aa4054dd7c2 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2012-02-28  Richard Guenther  <rguenther@suse.de>
+
+	PR target/52407
+	* config/i386/i386.c (ix86_expand_vector_set): Fix element
+	ordering for the VEC_CONCAT for two element vectors for
+	V2SFmode, V2SImode and V2DImode.
+
 2012-02-28  Richard Earnshaw  <rearnsha@arm.com>
 
 	PR target/49448
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 52fcb61a6d83..f93583f90463 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -33562,9 +33562,9 @@ ix86_expand_vector_set (bool mmx_ok, rtx target, rtx val, int elt)
 	  tmp = gen_reg_rtx (GET_MODE_INNER (mode));
 	  ix86_expand_vector_extract (true, tmp, target, 1 - elt);
 	  if (elt == 0)
-	    tmp = gen_rtx_VEC_CONCAT (mode, tmp, val);
-	  else
 	    tmp = gen_rtx_VEC_CONCAT (mode, val, tmp);
+	  else
+	    tmp = gen_rtx_VEC_CONCAT (mode, tmp, val);
 	  emit_insn (gen_rtx_SET (VOIDmode, target, tmp));
 	  return;
 	}
@@ -33578,9 +33578,9 @@ ix86_expand_vector_set (bool mmx_ok, rtx target, rtx val, int elt)
       tmp = gen_reg_rtx (GET_MODE_INNER (mode));
       ix86_expand_vector_extract (false, tmp, target, 1 - elt);
       if (elt == 0)
-	tmp = gen_rtx_VEC_CONCAT (mode, tmp, val);
-      else
 	tmp = gen_rtx_VEC_CONCAT (mode, val, tmp);
+      else
+	tmp = gen_rtx_VEC_CONCAT (mode, tmp, val);
       emit_insn (gen_rtx_SET (VOIDmode, target, tmp));
       return;
 
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 09da73f681c7..ef3fe50434af 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2012-02-28  Richard Guenther  <rguenther@suse.de>
+
+	PR target/52407
+	* gcc.dg/torture/pr52407.c: New testcase.
+
 2012-02-28  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>
 
 	* gcc.target/arm/vfp1.c (dg_do run): Run on all eabi variants.
diff --git a/gcc/testsuite/gcc.dg/torture/pr52407.c b/gcc/testsuite/gcc.dg/torture/pr52407.c
new file mode 100644
index 000000000000..bb95e51f25bd
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/torture/pr52407.c
@@ -0,0 +1,33 @@
+/* { dg-do run } */
+
+extern void abort (void);
+
+typedef long long T;
+typedef T vl_t __attribute__((vector_size(2 * sizeof (T))));
+
+vl_t	ul[4], vl[4] = { { 1, 2 }, { 3, 4 }, { 5, 6 }, { 7, 8 } };
+
+static void
+mul_vl_l(vl_t *u, vl_t *v, T x, int m)
+{
+  vl_t	 w;
+  T *p = (T *)&w;
+  p[0] = p[1] = x;
+  while (m--)
+    *u++ = *v++ * w;
+}
+
+int
+main(int argc, char *argv[])
+{
+  int i;
+  T *pl;
+
+  pl = (T *) &ul;
+  mul_vl_l(ul, vl, 2, 4);
+  for (i = 0; i < 8; i++)
+    if (pl[i] != 2 * (i + 1))
+      abort ();
+
+  return 0;
+}