[RFC/ARM] Correct mov_notscc pattern

[Matthew Gretton-Dann]

All,

The attached patch corrects the mov_notscc pattern in arm.md.

This issue also exists in 4.5 and 4.6, is it okay for me to backport the
fix to those branches, as well as trunk?

OK?

Thanks,

Matt

gcc/ChangeLog:
2012-01-10  Matthew Gretton-Dann  <matthew.gretton-d...@arm.com>

        * config/arm/arm.md (mov_notscc): Use MVN for false condition.

gcc/testsuite/ChangeLog:
2012-01-10  Matthew Gretton-Dann  <matthew.gretton-d...@arm.com>

        * testsuite/gcc.c-torture/execute/20120110-1.c: New testcase.
-- 
Matthew Gretton-Dann
Principal Engineer, PD Software, ARM Ltd.
diff --git a/gcc/config/arm/arm.md b/gcc/config/arm/arm.md
index 0e4bc3e..5620d7d 100644
--- a/gcc/config/arm/arm.md
+++ b/gcc/config/arm/arm.md
@@ -7726,7 +7726,7 @@
        (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 "insn" "mov")
    (set_attr "length" "8")]
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 0000000..eac086e
--- /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;
+}