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re PR middle-end/30433 (no longer folding __complex__(0.0, 1.0) == __complex__(1.0, 0.0)) 

2007-02-15  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        PR middle-end/30433
        * fold-const.c (fold_comparison): Add back the
        folding of constant complex comparisions.
2007-02-15  Andrew Pinski  <andrew_pinski@playstation.sony.com>

        PR middle-end/30433
        * gcc.c-torture/compile/pr30433.c: New testcase to check
        that complex constants comparisions are foldded.

From-SVN: r122029
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Andrew Pinski 2007-02-16 01:27:42 +00:00 committed by Andrew Pinski
parent 76b9a2a1cd
commit 3c32c87f60
4 changed files with 37 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2007-02-15 Andrew Pinski <andrew_pinski@playstation.sony.com>
PR middle-end/30433
* fold-const.c (fold_comparison): Add back the
folding of constant complex comparisions.
2007-02-15 Andrew Pinski <andrew_pinski@playstation.sony.com>
PR middle-end/30729

23
gcc/fold-const.c
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@ -8852,6 +8852,29 @@ fold_comparison (enum tree_code code, tree type, tree op0, tree op1)
}
}
/* If this is a comparison of complex values and both sides
are COMPLEX_CST, do the comparision by parts to fold the
comparision. */
if ((code == EQ_EXPR || code == NE_EXPR)
&& TREE_CODE (TREE_TYPE (arg0)) == COMPLEX_TYPE
&& TREE_CODE (arg0) == COMPLEX_CST
&& TREE_CODE (arg1) == COMPLEX_CST)
{
tree real0, imag0, real1, imag1;
enum tree_code outercode;
real0 = TREE_REALPART (arg0);
imag0 = TREE_IMAGPART (arg0);
real1 = TREE_REALPART (arg1);
imag1 = TREE_IMAGPART (arg1);
outercode = code == EQ_EXPR ? TRUTH_ANDIF_EXPR : TRUTH_ORIF_EXPR;
return fold_build2 (outercode, type,
fold_build2 (code, type, real0, real1),
fold_build2 (code, type, imag0, imag1));
}
/* Fold a comparison of the address of COMPONENT_REFs with the same
type and component to a comparison of the address of the base
object. In short, &x->a OP &y->a to x OP y and

6
gcc/testsuite/ChangeLog
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@ -1,3 +1,9 @@
2007-02-15 Andrew Pinski <andrew_pinski@playstation.sony.com>
PR middle-end/30433
* gcc.c-torture/compile/pr30433.c: New testcase to check
that complex constants comparisions are foldded.
2007-02-15 Andrew Pinski <andrew_pinski@playstation.sony.com>
PR C++/30158

2
gcc/testsuite/gcc.c-torture/compile/pr30433.c Normal file
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@ -0,0 +1,2 @@
int f = (_Complex float)(0.5) == 0.5;