On Fri, Mar 18, 2011 at 3:39 PM, Richard Henderson <r...@redhat.com> wrote:
> On 03/18/2011 02:51 PM, H.J. Lu wrote:
>> See analysis in:
>>
>> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47502
>
> You're patching the wrong place. See can_combine_p,
> which can test for specific sources, rather than
> cant_combine_insn_p which has no access to sources.
>
I can no longer trigger the failure. But I'd like to add those
2 testcases. OK for trunk?
Thanks.
--
H.J.
---
2011-03-19 H.J. Lu <hongjiu...@intel.com>
PR rtl-optimization/47502
* gcc.target/i386/pr47502-1.c: New.
* gcc.target/i386/pr47502-2.c: Likewise.
diff --git a/gcc/testsuite/gcc.target/i386/pr47502-1.c
b/gcc/testsuite/gcc.target/i386/pr47502-1.c
new file mode 100644
index 0000000..727afe9
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr47502-1.c
@@ -0,0 +1,8 @@
+/* { dg-do compile } */
+/* { dg-options "-O" } */
+
+void
+foo (const void *xxxxx, void *yyyyy, long y)
+{
+ asm volatile ("" :: "c" ((xxxxx)), "d" ((yyyyy)), "S" (y));
+}
diff --git a/gcc/testsuite/gcc.target/i386/pr47502-2.c
b/gcc/testsuite/gcc.target/i386/pr47502-2.c
new file mode 100644
index 0000000..1f57ea0
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr47502-2.c
@@ -0,0 +1,12 @@
+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+
+int
+foo (int how, const void *set, void *oset)
+{
+ int resultvar;
+ asm volatile (""
+ : "=a" (resultvar)
+ : "0" (14) , "b" (how), "c" ((set)), "d" ((oset)),
"S" (65 / 8) : "memory", "cc");
+ return resultvar;
+}
