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re PR tree-optimization/59386 (ICE on valid code at -O2 and -O3 on x86_64-linux-gnu in 64-bit mode)

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PR tree-optimization/59386
	* tree-inline.c (remap_gimple_stmt): If not id->do_not_unshare,
	unshare_expr (id->retval) before passing it to gimple_build_assign.

	* gcc.c-torture/compile/pr59386.c: New test.

From-SVN: r205883
This commit is contained in:
Jakub Jelinek 2013-12-11 10:18:33 +01:00 committed by Jakub Jelinek
parent ba8267926c
commit f8cb36a94c
4 changed files with 38 additions and 1 deletions
gcc
ChangeLog
testsuite
ChangeLog
gcc.c-torture/compile
pr59386.c
tree-inline.c

6
gcc/ChangeLog

@ -1,3 +1,9 @@
2013-12-11 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/59386
* tree-inline.c (remap_gimple_stmt): If not id->do_not_unshare,
unshare_expr (id->retval) before passing it to gimple_build_assign.
2013-12-11 Bin Cheng <bin.cheng@arm.com>
Reverted:

5
gcc/testsuite/ChangeLog

@ -1,3 +1,8 @@
2013-12-11 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/59386
* gcc.c-torture/compile/pr59386.c: New test.
2013-12-11 Bin Cheng <bin.cheng@arm.com>
Reverted:

24
gcc/testsuite/gcc.c-torture/compile/pr59386.c Normal file

@ -0,0 +1,24 @@
/* PR tree-optimization/59386 */
struct S { int s; };
struct T { int t; struct S u; } c;
int b;
struct S
foo ()
{
struct T d;
if (b)
while (c.t)
;
else
return d.u;
}
struct S
bar ()
{
struct T a;
a.u = foo ();
return a.u;
}

4
gcc/tree-inline.c

@ -1273,7 +1273,9 @@ remap_gimple_stmt (gimple stmt, copy_body_data *id)
|| ! SSA_NAME_VAR (retval)
|| TREE_CODE (SSA_NAME_VAR (retval)) != RESULT_DECL)))
{
copy = gimple_build_assign (id->retvar, retval);
copy = gimple_build_assign (id->do_not_unshare
? id->retvar : unshare_expr (id->retvar),
retval);
/* id->retvar is already substituted. Skip it on later remapping. */
skip_first = true;
}