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re PR middle-end/19706 (Recognize common Fortran usages of copysign.)

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2017-08-23  Tamar Christina  <tamar.christina@arm.com>

	PR middle-end/19706
	* tree-ssa-math-opts.c (convert_expand_mult_copysign):
	Fix single-use check.

From-SVN: r251303
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Tamar Christina 2017-08-23 11:32:47 +00:00 committed by Tamar Christina
parent b00775e373
commit 9880acc19e
2 changed files with 9 additions and 4 deletions
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gcc/ChangeLog
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@ -1,3 +1,9 @@
2017-08-23 Tamar Christina <tamar.christina@arm.com>
PR middle-end/19706
* tree-ssa-math-opts.c (convert_expand_mult_copysign):
Fix single-use check.
2017-08-23 Thomas Preud'homme <thomas.preudhomme@arm.com>
* gcc.c (execute): Only test for SIGKILL and SIGQUIT if available.

7
gcc/tree-ssa-math-opts.c
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@ -3200,21 +3200,20 @@ convert_expand_mult_copysign (gimple *stmt, gimple_stmt_iterator *gsi)
type = TREE_TYPE (lhs);
machine_mode mode = TYPE_MODE (type);
if (HONOR_SNANS (type) || !has_single_use (lhs))
if (HONOR_SNANS (type))
return false;
if (TREE_CODE (treeop0) == SSA_NAME && TREE_CODE (treeop1) == SSA_NAME)
{
gimple *call0 = SSA_NAME_DEF_STMT (treeop0);
if (!is_copysign_call_with_1 (call0))
if (!has_single_use (treeop0) || !is_copysign_call_with_1 (call0))
{
call0 = SSA_NAME_DEF_STMT (treeop1);
if (!is_copysign_call_with_1 (call0))
if (!has_single_use (treeop1) || !is_copysign_call_with_1 (call0))
return false;
treeop1 = treeop0;
}
if (optab_handler (xorsign_optab, mode) == CODE_FOR_nothing)
return false;