2012-02-08 Richard Guenther <rguenther@suse.de>

	PR rtl-optimization/52170
	* simplify-rtx.c (simplify_plus_minus): Use CONSTM1_RTX to
	properly handle integer vector modes.

	* gcc.dg/torture/pr52170.c: New testcase.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@184007 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index fcea3cf..71cdd93 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2012-02-08  Richard Guenther  <rguenther@suse.de>
+
+       PR rtl-optimization/52170
+       * simplify-rtx.c (simplify_plus_minus): Use CONSTM1_RTX to
+       properly handle integer vector modes.
+
 2012-02-08  Jakub Jelinek  <jakub@redhat.com>
 
        PR gcov-profile/52150

diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c
index 6733b84..bba565d 100644 (file)
--- a/gcc/simplify-rtx.c
+++ b/gcc/simplify-rtx.c
@@ -3947,7 +3947,7 @@ simplify_plus_minus (enum rtx_code code, enum machine_mode mode, rtx op0,
              /* ~a -> (-a - 1) */
              if (n_ops != 7)
                {
-                 ops[n_ops].op = constm1_rtx;
+                 ops[n_ops].op = CONSTM1_RTX (mode);
                  ops[n_ops++].neg = this_neg;
                  ops[i].op = XEXP (this_op, 0);
                  ops[i].neg = !this_neg;

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 6cedc9e..7928ea1 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2012-02-08  Richard Guenther  <rguenther@suse.de>
+
+       PR rtl-optimization/52170
+       * gcc.dg/torture/pr52170.c: New testcase.
+
 2012-02-08  Jakub Jelinek  <jakub@redhat.com>
 
        PR gcov-profile/52150

diff --git a/gcc/testsuite/gcc.dg/torture/pr52170.c b/gcc/testsuite/gcc.dg/torture/pr52170.c
new file mode 100644 (file)
index 0000000..3d0a038
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/torture/pr52170.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+
+typedef unsigned char uint8_t ;
+typedef unsigned long uint32_t;
+void f0a(uint32_t * result, uint32_t * arg1)
+{
+  int idx;
+  for (idx=0;idx<96;idx += 1)
+    {
+      uint8_t temp_5;
+      uint8_t temp_6;
+
+      temp_5 = ~(*arg1);
+      temp_6 = (*arg1) + 1 - temp_5;
+      result[idx] = temp_6;
+    }
+}