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fix ia64 gcc.c-torture/execute/ieee/980619-1.c
- From: Richard Henderson <rth at redhat dot com>
- To: gcc-patches at gcc dot gnu dot org
- Cc: dvorakz at suse dot cz
- Date: Sun, 26 Dec 2004 19:33:13 -0800
- Subject: fix ia64 gcc.c-torture/execute/ieee/980619-1.c
Regression caused by
2004-12-20 Zdenek Dvorak <dvorakz@suse.cz>
PR rtl-optimization/18942
* simplify-rtx.c (simplify_relational_operation_1): Simplify
x + cst1 == cst2 to x == cst2 - cst1. Made static.
Tested on ia64-linux.
r~
* simplify-rtx.c (simplify_relational_operation_1): Don't simplify
plus/minus across EQ for floating-point.
Index: simplify-rtx.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/simplify-rtx.c,v
retrieving revision 1.217
diff -c -p -d -u -r1.217 simplify-rtx.c
--- simplify-rtx.c 20 Dec 2004 20:48:53 -0000 1.217
+++ simplify-rtx.c 27 Dec 2004 03:28:52 -0000
@@ -2807,7 +2807,8 @@ simplify_relational_operation_1 (enum rt
if ((code == EQ || code == NE)
&& (op0code == PLUS || op0code == MINUS)
&& CONSTANT_P (op1)
- && CONSTANT_P (XEXP (op0, 1)))
+ && CONSTANT_P (XEXP (op0, 1))
+ && (INTEGRAL_MODE_P (cmp_mode) || flag_unsafe_math_optimizations))
{
rtx x = XEXP (op0, 0);
rtx c = XEXP (op0, 1);