From: Matthew Gretton-Dann <matthew.gretton-dann@arm.com>
Date: Thu, 12 Jan 2012 15:18:24 +0000 (+0000)
Subject: backport: arm.md (mov_notscc): Use MVN for false condition.
X-Git-Tag: releases/gcc-4.5.4~273
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cda0ad907fc5c8f90908338b46502ea553fdb9f5;p=thirdparty%2Fgcc.git

backport: arm.md (mov_notscc): Use MVN for false condition.

	Backport from mainline:
	2012-01-11  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>

	* gcc/config/arm/arm.md (mov_notscc): Use MVN for false condition.
	* gcc/testsuite/gcc.c-torture/execute/20120110-1.c: New testcase.

From-SVN: r183128
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index bb6cb4164546..4c52caf14455 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2012-01-12  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>
+
+	Backport from mainline:
+	2012-01-11  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>
+
+	* config/arm/arm.md (mov_notscc): Use MVN for false condition.
+
 2012-01-10  Joseph Myers  <joseph@codesourcery.com>
 
 	Revert:
diff --git a/gcc/config/arm/arm.md b/gcc/config/arm/arm.md
index 032af3036edf..522e9848ab4f 100644
--- a/gcc/config/arm/arm.md
+++ b/gcc/config/arm/arm.md
@@ -7994,7 +7994,7 @@
 	(not:SI (match_operator:SI 1 "arm_comparison_operator"
 		 [(match_operand 2 "cc_register" "") (const_int 0)])))]
   "TARGET_ARM"
-  "mov%D1\\t%0, #0\;mvn%d1\\t%0, #1"
+  "mvn%D1\\t%0, #0\;mvn%d1\\t%0, #1"
   [(set_attr "conds" "use")
    (set_attr "length" "8")]
 )
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 9cf5911482ec..9fb2ffadf735 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,10 @@
+2012-01-12  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>
+
+	Backport from mainline:
+	2011-01-11  Matthew Gretton-Dann  <matthew.gretton-dann@arm.com>
+
+	* gcc.c-torture/execute/20120110-1.c: New testcase.
+
 2012-01-10  Joseph Myers  <joseph@codesourcery.com>
 
 	* gcc.c-torture/execute/doloop-1.c,
diff --git a/gcc/testsuite/gcc.c-torture/execute/20120111-1.c b/gcc/testsuite/gcc.c-torture/execute/20120111-1.c
new file mode 100644
index 000000000000..eac086e3b51b
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/execute/20120111-1.c
@@ -0,0 +1,18 @@
+#include <stdlib.h>
+#include <stdint.h>
+
+uint32_t f0a (uint64_t arg2) __attribute__((noinline));
+
+uint32_t
+f0a (uint64_t arg)
+{
+  return ~(arg > -3);
+}
+
+int main() {
+  uint32_t r1;
+  r1 = f0a (12094370573988097329ULL);
+  if (r1 != ~0U)
+    abort ();
+  return 0;
+}