[Bug rtl-optimization/23478] [3.4 regression] Miscompilation due to reloading of a var that is also used in EH pad

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-08-22 16:59 -------
Subject: Bug 23478

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	jakub@gcc.gnu.org	2005-08-22 16:58:50

Modified files:
	gcc            : ChangeLog flow.c global.c regs.h 
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/g++.dg/opt: pr23478.C 

Log message:
	PR rtl-optimization/23478
	* regs.h (reg_info): Add throw_calls_crossed.
	(REG_N_THROWING_CALLS_CROSSED): Define.
	* flow.c (allocate_reg_life_data): Initialize
	REG_N_THROWING_CALLS_CROSSED.
	(propagate_one_insn, attempt_auto_inc): Update
	REG_N_THROWING_CALLS_CROSSED.
	* global.c (global_alloc): Don't allocate pseudos across
	calls that may throw.
	
	* g++.dg/opt/pr23478.C: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.9799&r2=2.9800
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/flow.c.diff?cvsroot=gcc&r1=1.634&r2=1.635
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/global.c.diff?cvsroot=gcc&r1=1.130&r2=1.131
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/regs.h.diff?cvsroot=gcc&r1=1.39&r2=1.40
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.5949&r2=1.5950
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/opt/pr23478.C.diff?cvsroot=gcc&r1=NONE&r2=1.1



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23478