[PATCH] Add testcase for possible bug in gcc-4_4 ix86 branch

[asharif tools]

Thanks for the quick replies, Ian and Jakub.

Replies inline and please find below an updated patch that is pretty
close to minimal. This patch passes on trunk but fails with
(http://gcc.gnu.org/viewcvs?view=revision&revision=153780):

Index: gcc/testsuite/gcc.target/i386/max-stack-align.c
===================================================================
--- gcc/testsuite/gcc.target/i386/max-stack-align.c	(revision 0)
+++ gcc/testsuite/gcc.target/i386/max-stack-align.c	(revision 0)
@@ -0,0 +1,14 @@
+/* { dg-do compile } */
+/* { dg-options "-fomit-frame-pointer" } */
+/* { dg-require-effective-target lp64 } */
+
+void foo()
+{
+  int a=0, b=0, c=0, e=0, f=0, g=0, h=0, i=0;
+	__asm__ __volatile__ (""
+		:
+		:
+		: "bp"
+	);
+}
+


On Mon, Dec 13, 2010 at 10:46 PM, Jakub Jelinek <jakub@redhat.com> wrote:
> On Mon, Dec 13, 2010 at 08:20:38PM -0800, Ian Lance Taylor wrote:
>> You should be able to use "=r" and "r" instead of "=rbp" and "rbp".  If
>> that works, then this patch is OK.

I followed Jakub's suggestion to trim the testcase.

>
> Also, please try to trim the list of variables (c through i), if you can

The minimum number of integers needed to trigger this compilation failure is 8.

> still reproduce the problem with the testcase.  And you can probably use
> just "" instead of "addl %%rbp,%%rbp".

Done.

Comments/Suggestions?