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re PR libgomp/84466 (libgomp.graphite/force-parallel-8.c fails starting with r257723)

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2018-02-27  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/84466
	* graphite-scop-detection.c (scop_detection::stmt_simple_for_scop_p):
	Adjust last change to less strictly validate use operands.

From-SVN: r258035
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Richard Biener 2018-02-27 14:45:46 +00:00 committed by Richard Biener
parent e59b5e24ea
commit c16d3e3c87
2 changed files with 16 additions and 3 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2018-02-27 Richard Biener <rguenther@suse.de>
PR tree-optimization/84466
* graphite-scop-detection.c (scop_detection::stmt_simple_for_scop_p):
Adjust last change to less strictly validate use operands.
2018-02-27 Martin Liska <mliska@suse.cz>
PR gcov-profile/84548

13
gcc/graphite-scop-detection.c
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@ -1028,16 +1028,23 @@ scop_detection::stmt_simple_for_scop_p (sese_l scop, gimple *stmt,
case GIMPLE_ASSIGN:
case GIMPLE_CALL:
{
tree op;
tree op, lhs = gimple_get_lhs (stmt);
ssa_op_iter i;
/* If we are not going to instantiate the stmt do not require
its operands to be instantiatable at this point. */
if (lhs
&& TREE_CODE (lhs) == SSA_NAME
&& scev_analyzable_p (lhs, scop))
return true;
/* Verify that if we can analyze operands at their def site we
also can represent them when analyzed at their uses. */
FOR_EACH_SSA_TREE_OPERAND (op, stmt, i, SSA_OP_USE)
if (scev_analyzable_p (op, scop)
&& !graphite_can_represent_expr (scop, bb->loop_father, op))
&& chrec_contains_undetermined
(scalar_evolution_in_region (scop, bb->loop_father, op)))
{
DEBUG_PRINT (dp << "[scop-detection-fail] "
<< "Graphite cannot represent stmt:\n";
<< "Graphite cannot code-gen stmt:\n";
print_gimple_stmt (dump_file, stmt, 0,
TDF_VOPS | TDF_MEMSYMS));
return false;