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re PR tree-optimization/77697 (suspicious code in tree-ssa-forwprop.c)

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2016-09-23  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/77697
	* tree-ssa-forwprop.c (defcodefor_name): Remove bogus code,
	signal error if we have sth ternary or unhandled.

From-SVN: r240430
This commit is contained in:
Richard Biener 2016-09-23 12:37:22 +00:00 • committed by Richard Biener
parent 643e08545f
commit 26bedff5fd
2 changed files with 12 additions and 7 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2016-09-23 Richard Biener <rguenther@suse.de>
PR tree-optimization/77697
* tree-ssa-forwprop.c (defcodefor_name): Remove bogus code,
signal error if we have sth ternary or unhandled.
2016-09-23 Matthew Wahab <matthew.wahab@arm.com>
* config/arm/arm_neon.h (vabd_f16): New.

13
gcc/tree-ssa-forwprop.c
View file

@ -1458,6 +1458,7 @@ defcodefor_name (tree name, enum tree_code *code, tree *arg1, tree *arg2)
code1 = TREE_CODE (name);
arg11 = name;
arg21 = NULL_TREE;
arg31 = NULL_TREE;
grhs_class = get_gimple_rhs_class (code1);
if (code1 == SSA_NAME)
@ -1470,20 +1471,18 @@ defcodefor_name (tree name, enum tree_code *code, tree *arg1, tree *arg2)
code1 = gimple_assign_rhs_code (def);
arg11 = gimple_assign_rhs1 (def);
arg21 = gimple_assign_rhs2 (def);
arg31 = gimple_assign_rhs2 (def);
arg31 = gimple_assign_rhs3 (def);
}
}
else if (grhs_class == GIMPLE_TERNARY_RHS
|| GIMPLE_BINARY_RHS
|| GIMPLE_UNARY_RHS
|| GIMPLE_SINGLE_RHS)
extract_ops_from_tree (name, &code1, &arg11, &arg21, &arg31);
else if (grhs_class != GIMPLE_SINGLE_RHS)
code1 = ERROR_MARK;
*code = code1;
*arg1 = arg11;
if (arg2)
*arg2 = arg21;
/* Ignore arg3 currently. */
if (arg31)
*code = ERROR_MARK;
}