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re PR tree-optimization/41661 (ICE due to IPCP trying to create/fold a REAL typed comparision)

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2009-10-13  Martin Jambor  <mjambor@suse.cz>

	PR tree-optimization/41661
	* ipa-prop.c (compute_complex_pass_through): Allow only operations
	that are tcc_comparisons or do not change the type in any
	un-usleless way.
	* ipa-cp.c (ipcp_lattice_from_jfunc): Request boolean type when
	folding tcc_comparison operations.

	* testsuite/gcc.c-torture/compile/pr41661.c: New test.

From-SVN: r152702
This commit is contained in:
Martin Jambor 2009-10-13 13:31:08 +02:00 • committed by Martin Jambor
parent 3525f49b5a
commit c4e5fe4b51
5 changed files with 46 additions and 3 deletions
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9
gcc/ChangeLog
View file

@ -1,3 +1,12 @@
2009-10-13 Martin Jambor <mjambor@suse.cz>
PR tree-optimization/41661
* ipa-prop.c (compute_complex_pass_through): Allow only operations
that are tcc_comparisons or do not change the type in any
un-usleless way.
* ipa-cp.c (ipcp_lattice_from_jfunc): Request boolean type when
folding tcc_comparison operations.
2009-10-13 Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
* config/s390/s390.c (s390_encode_section_info): Handle BLKmode

11
gcc/ipa-cp.c
View file

@ -299,9 +299,16 @@ ipcp_lattice_from_jfunc (struct ipa_node_params *info, struct ipcp_lattice *lat,
cst = caller_lat->constant;
if (jfunc->value.pass_through.operation != NOP_EXPR)
{
tree restype;
if (TREE_CODE_CLASS (jfunc->value.pass_through.operation)
== tcc_comparison)
restype = boolean_type_node;
else
restype = TREE_TYPE (cst);
cst = fold_binary (jfunc->value.pass_through.operation,
TREE_TYPE (cst), cst,
jfunc->value.pass_through.operand);
restype, cst, jfunc->value.pass_through.operand);
}
if (!cst || !is_gimple_ip_invariant (cst))
lat->type = IPA_BOTTOM;
lat->constant = cst;

3
gcc/ipa-prop.c
View file

@ -357,6 +357,9 @@ compute_complex_pass_through (struct ipa_node_params *info,
{
if (TREE_CODE (op1) != SSA_NAME
|| !SSA_NAME_IS_DEFAULT_DEF (op1)
|| (TREE_CODE_CLASS (gimple_expr_code (stmt)) != tcc_comparison
&& !useless_type_conversion_p (TREE_TYPE (name),
TREE_TYPE (op1)))
|| !is_gimple_ip_invariant (op2))
return;

4
gcc/testsuite/ChangeLog
View file

@ -1,3 +1,7 @@
2009-10-13 Martin Jambor <mjambor@suse.cz>
* gcc.c-torture/compile/pr41661.c: New test.
2009-10-12 Jerry DeLisle <jvdelisle@gcc.gnu.org>
PR libgfortran/41683

20
gcc/testsuite/gcc.c-torture/compile/pr41661.c Normal file
View file

@ -0,0 +1,20 @@
/* PR tree-optimization/41661 */
/* { dg-do compile } */
/* { dg-options "-fno-early-inlining" } */
int g;
void foo (int x)
{
g = x;
}
void bar (double d)
{
foo (d == 1);
}
void baz (int a)
{
bar (1);
}