From patchwork Wed Nov  7 19:29:04 2012
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Subject: [i386] : Fix PR55224,
 FAIL: gcc.target/i386/tailcall-1.c scan-assembler jmp
Date: Wed, 07 Nov 2012 09:29:04 -0000
From: Uros Bizjak <ubizjak@gmail.com>
X-Patchwork-Id: 197723
Message-Id: <CAFULd4bYj1RjqfpqpOq_J+FPv=3mJGJHiA1hga4F9WXjM2K+nA@mail.gmail.com>
To: gcc-patches@gcc.gnu.org
Cc: vbyakovl23@gmail.com

Hello!

Apparently, vzeroupper patch removed a couple of unrelated lines.
Attached patch puts back what was there in gcc-4.5.

(Also, the patch finds a better place for check_avx256_stores.)

2012-11-07  Uros Bizjak  <ubizjak@gmail.com>

	PR target/55224
	* config/i386/i386.c (ix86_function_ok_for_sibcall): Put back exception
	to make a sibcall if one of the functions has void return type.

Patch was tested on x86_64-pc-linux-gnu {,-m32} and committed to mainline SVN.

Uros.


Index: i386.c
===================================================================
--- i386.c	(revision 193296)
+++ i386.c	(working copy)
@@ -4638,6 +4622,8 @@ ix86_function_ok_for_sibcall (tree decl, tree exp)
       if (!rtx_equal_p (a, b))
 	return false;
     }
+  else if (VOID_TYPE_P (TREE_TYPE (DECL_RESULT (cfun->decl))))
+    ;
   else if (!rtx_equal_p (a, b))
     return false;