[Bug target/15130] [3.3/3.4][sh4-linux] miscompilation with -O2

["cvs-commit at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-05-10 23:47 -------
Subject: Bug 15130

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-3_4-branch
Changes by:	kkojima@gcc.gnu.org	2004-05-10 23:47:49

Modified files:
	gcc            : ChangeLog 
	gcc/config/sh  : sh-protos.h sh.c sh.md 

Log message:
	PR target/15130
	Backport from mainline:
	
	* config/sh/sh-protos.h (sh_expand_epilogue): Change prototype.
	* config/sh/sh.c (output_stack_adjust): Take the sibcall epilogue
	into account.  Compute the correct number of general registers
	for the return value.  Generate a special push/pop sequence when
	failing to get a temporary register for non SHmedia epilogue.
	(sh_expand_epilogue): Add an argument to show whether it's for
	sibcall or not.  Set the 3rd argument of output_stack_adjust to
	-1 if needed.
	(sh_need_epilogue): Call sh_expand_epilogue with 0.
	* config/sh/sh.md (sibcall_epilogue): Call sh_expand_epilogue
	with 1.
	(epilogue): Call sh_expand_epilogue with 0.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=2.2326.2.439&r2=2.2326.2.440
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/sh/sh-protos.h.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.53&r2=1.53.4.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/sh/sh.c.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.247.2.5&r2=1.247.2.6
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/config/sh/sh.md.diff?cvsroot=gcc&only_with_tag=gcc-3_4-branch&r1=1.165.4.1&r2=1.165.4.2



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=15130