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PATCH: PR testsuite/39907: Aligned access to unaligned address

From: "H.J. Lu" <hjl dot tools at gmail dot com>
To: GCC Patches <gcc-patches at gcc dot gnu dot org>, Uros Bizjak <ubizjak at gmail dot com>
Date: Mon, 18 May 2009 09:39:02 -0700
Subject: PATCH: PR testsuite/39907: Aligned access to unaligned address

Hi,

gcc.target/x86_64/abi/asm-support.S doesn't preserve stack alignment
for

extern void (*callthis)(void);

void
foo ()
{
  (*callthis) ();
}

which should generate

foo:
	subq	$8, %rsp
	call	*callthis(%rip)
	addq	$8, %rsp
	ret

Tested on Linux/x86-64.  OK for trunk/4.4/4.3?

Thanks.


-- 
H.J.
--
2009-05-18  H.J. Lu  <hongjiu.lu@intel.com>

	PR testsuite/39907
	* gcc.target/x86_64/abi/asm-support.S (snapshot_ret): Preserve
	stack alignment.

Attachment: gcc-pr39907-1.patch
Description: Text document

Follow-Ups:
- Re: PATCH: PR testsuite/39907: Aligned access to unaligned address
  - From: Uros Bizjak

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