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re PR tree-optimization/24653 (EON regressed seriously on x86-64)

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PR tree-optimization/24653
	* tree-ssa-ccp.c (ccp_fold): Strip down useless conversions.

From-SVN: r107304
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Jan Hubicka 2005-11-21 14:14:02 +01:00 committed by Jan Hubicka
parent 1c2871213e
commit 078152a256
2 changed files with 9 additions and 0 deletions
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gcc/ChangeLog
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@ -1,3 +1,8 @@
2005-11-21 Jan Hubicka <jh@suse.cz>
PR tree-optimization/24653
* tree-ssa-ccp.c (ccp_fold): Strip down useless conversions.
2005-11-21 Uros Bizjak <uros@kss-loka.si>
* config/i386/predicates.md (ax_reg_operand): New predicate.

4
gcc/tree-ssa-ccp.c
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@ -879,6 +879,10 @@ ccp_fold (tree stmt)
op0 = get_value (op0, true)->value;
}
if ((code == NOP_EXPR || code == CONVERT_EXPR)
&& tree_ssa_useless_type_conversion_1 (TREE_TYPE (rhs),
TREE_TYPE (op0)))
return op0;
return fold_unary (code, TREE_TYPE (rhs), op0);
}