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re PR middle-end/55331 (ICE: SIGSEGV in substitute_and_fold with -O2 -fno-tree-fre) 

2012-11-27  Richard Biener  <rguenther@suse.de>

	PR middle-end/55331
	* gimple-fold.c (gimplify_and_update_call_from_tree): Replace
	stmt with a NOP instead of removing it.

	* g++.dg/opt/pr55331.C: New testcase.

From-SVN: r193840
This commit is contained in:
Richard Biener 2012-11-27 09:23:15 +00:00 committed by Richard Biener
parent 518f7f0847
commit 822cb0901e
4 changed files with 26 additions and 1 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2012-11-27 Richard Biener <rguenther@suse.de>
PR middle-end/55331
* gimple-fold.c (gimplify_and_update_call_from_tree): Replace
stmt with a NOP instead of removing it.
2012-11-26 Richard Biener <rguenther@suse.de>
Backport from mainline

2
gcc/gimple-fold.c
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@ -572,7 +572,7 @@ gimplify_and_update_call_from_tree (gimple_stmt_iterator *si_p, tree expr)
unlink_stmt_vdef (stmt);
release_defs (stmt);
}
gsi_remove (si_p, true);
gsi_replace (si_p, gimple_build_nop (), true);
return;
}
}

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2012-11-27 Richard Biener <rguenther@suse.de>
PR middle-end/55331
* g++.dg/opt/pr55331.C: New testcase.
2012-11-26 Richard Biener <rguenther@suse.de>
Backport from mainline

14
gcc/testsuite/g++.dg/opt/pr55331.C Normal file
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@ -0,0 +1,14 @@
// PR tree-optimization/55331
// { dg-do compile }
// { dg-options "-O2 -fno-tree-fre" }
struct A {};
void
foo (A *p, bool x)
{
A a;
char *e = (char *) (&a + 1);
if (x)
__builtin_memmove (p, &a, e - (char *) &a);
}