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match.pd: Implement simple complex operations cancelling. 

2014-11-12  Richard Biener  <rguenther@suse.de>

	* match.pd: Implement simple complex operations cancelling.
	* fold-const.c (fold_unary_loc): Remove them here.

	* gcc.dg/tree-ssa/ssa-fre-32.c: Disable forwprop.

From-SVN: r217421
This commit is contained in:
Richard Biener 2014-11-12 13:45:48 +00:00 committed by Richard Biener
parent 2079956a87
commit eaeba53a03
5 changed files with 22 additions and 14 deletions
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5
gcc/ChangeLog
View File

@ -1,3 +1,8 @@
2014-11-12 Richard Biener <rguenther@suse.de>
* match.pd: Implement simple complex operations cancelling.
* fold-const.c (fold_unary_loc): Remove them here.
2014-11-12 Joseph Myers <joseph@codesourcery.com> 2014-11-12 Joseph Myers <joseph@codesourcery.com>
* cppbuiltin.c (define_builtin_macros_for_compilation_flags): * cppbuiltin.c (define_builtin_macros_for_compilation_flags):

13
gcc/fold-const.c
View File

@ -7988,9 +7988,6 @@ fold_unary_loc (location_t loc, enum tree_code code, tree type, tree op0)
case REALPART_EXPR: case REALPART_EXPR:
if (TREE_CODE (TREE_TYPE (arg0)) != COMPLEX_TYPE) if (TREE_CODE (TREE_TYPE (arg0)) != COMPLEX_TYPE)
return fold_convert_loc (loc, type, arg0); return fold_convert_loc (loc, type, arg0);
if (TREE_CODE (arg0) == COMPLEX_EXPR)
return omit_one_operand_loc (loc, type, TREE_OPERAND (arg0, 0),
TREE_OPERAND (arg0, 1));
if (TREE_CODE (arg0) == COMPLEX_CST) if (TREE_CODE (arg0) == COMPLEX_CST)
return fold_convert_loc (loc, type, TREE_REALPART (arg0)); return fold_convert_loc (loc, type, TREE_REALPART (arg0));
if (TREE_CODE (arg0) == PLUS_EXPR || TREE_CODE (arg0) == MINUS_EXPR) if (TREE_CODE (arg0) == PLUS_EXPR || TREE_CODE (arg0) == MINUS_EXPR)
@ -8031,9 +8028,6 @@ fold_unary_loc (location_t loc, enum tree_code code, tree type, tree op0)
case IMAGPART_EXPR: case IMAGPART_EXPR:
if (TREE_CODE (TREE_TYPE (arg0)) != COMPLEX_TYPE) if (TREE_CODE (TREE_TYPE (arg0)) != COMPLEX_TYPE)
return build_zero_cst (type); return build_zero_cst (type);
if (TREE_CODE (arg0) == COMPLEX_EXPR)
return omit_one_operand_loc (loc, type, TREE_OPERAND (arg0, 1),
TREE_OPERAND (arg0, 0));
if (TREE_CODE (arg0) == COMPLEX_CST) if (TREE_CODE (arg0) == COMPLEX_CST)
return fold_convert_loc (loc, type, TREE_IMAGPART (arg0)); return fold_convert_loc (loc, type, TREE_IMAGPART (arg0));
if (TREE_CODE (arg0) == PLUS_EXPR || TREE_CODE (arg0) == MINUS_EXPR) if (TREE_CODE (arg0) == PLUS_EXPR || TREE_CODE (arg0) == MINUS_EXPR)
@ -13350,13 +13344,6 @@ fold_binary_loc (location_t loc,
|| (TREE_CODE (arg0) == INTEGER_CST || (TREE_CODE (arg0) == INTEGER_CST
&& TREE_CODE (arg1) == INTEGER_CST)) && TREE_CODE (arg1) == INTEGER_CST))
return build_complex (type, arg0, arg1); return build_complex (type, arg0, arg1);
if (TREE_CODE (arg0) == REALPART_EXPR
&& TREE_CODE (arg1) == IMAGPART_EXPR
&& TREE_TYPE (TREE_OPERAND (arg0, 0)) == type
&& operand_equal_p (TREE_OPERAND (arg0, 0),
TREE_OPERAND (arg1, 0), 0))
return omit_one_operand_loc (loc, type, TREE_OPERAND (arg0, 0),
TREE_OPERAND (arg1, 0));
return NULL_TREE; return NULL_TREE;
case ASSERT_EXPR: case ASSERT_EXPR:

12
gcc/match.pd
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@ -558,3 +558,15 @@ along with GCC; see the file COPYING3. If not see
/* Look through a sign-changing conversion. */ /* Look through a sign-changing conversion. */
(if (TYPE_PRECISION (TREE_TYPE (@0)) == TYPE_PRECISION (type)) (if (TYPE_PRECISION (TREE_TYPE (@0)) == TYPE_PRECISION (type))
(convert @0))) (convert @0)))
/* COMPLEX_EXPR and REALPART/IMAGPART_EXPR cancellations. */
(simplify
(complex (realpart @0) (imagpart @0))
@0)
(simplify
(realpart (complex @0 @1))
@0)
(simplify
(imagpart (complex @0 @1))
@1)

4
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2014-11-12 Richard Biener <rguenther@suse.de>
* gcc.dg/tree-ssa/ssa-fre-32.c: Disable forwprop.
2014-11-12 Joseph Myers <joseph@codesourcery.com> 2014-11-12 Joseph Myers <joseph@codesourcery.com>
* gcc.dg/no-math-errno-1.c, gcc.dg/no-math-errno-2.c, * gcc.dg/no-math-errno-1.c, gcc.dg/no-math-errno-2.c,

2
gcc/testsuite/gcc.dg/tree-ssa/ssa-fre-32.c
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@ -1,5 +1,5 @@
/* { dg-do compile } */ /* { dg-do compile } */
/* { dg-options "-O -fdump-tree-fre1-details" } */ /* { dg-options "-O -fno-tree-forwprop -fdump-tree-fre1-details" } */
_Complex float m; _Complex float m;