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| author | Roger Sayle <roger@eyesopen.com> | 2004-01-19 21:51:06 +0000 |
|---|---|---|
| committer | Roger Sayle <sayle@gcc.gnu.org> | 2004-01-19 21:51:06 +0000 |
| commit | 9ce79a7a5ee9a5dbf634979dc17534d01459104f (patch) | |
| tree | 13ca67175f8037cdb994d41ba64df008eabc1b44 /gcc/rtlanal.c | |
| parent | 0916f87331e015fa7851354dd96180543f1934d6 (diff) | |
| download | gcc-9ce79a7a5ee9a5dbf634979dc17534d01459104f.zip gcc-9ce79a7a5ee9a5dbf634979dc17534d01459104f.tar.gz gcc-9ce79a7a5ee9a5dbf634979dc17534d01459104f.tar.bz2 | |
re PR rtl-optimization/5263 (a & b & ~a & ~b not optimized)
PR optimization/5263
* simplify-rtx.c (associative_constant_p): Delete.
(simplify_associative_operation): Rewrite to linearize terms, and
attempt to simplify new term against both left and right subterms.
(simplify_binary_operation): Call swap_commutative_operands_p on
op0 and op1, not trueop0 and trueop1. Move the initialization of
trueop0 and trueop1 down to where first needed.
(simplify_relational_operation): Likewise.
* rtlanal.c (commutative_operand_precedence): Also order constant
operands using avoid_constant_pool_reference.
From-SVN: r76179
Diffstat (limited to 'gcc/rtlanal.c')
| -rw-r--r-- | gcc/rtlanal.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/gcc/rtlanal.c b/gcc/rtlanal.c index 15c4879..44a6c6c 100644 --- a/gcc/rtlanal.c +++ b/gcc/rtlanal.c @@ -1,6 +1,6 @@ /* Analyze RTL for C-Compiler Copyright (C) 1987, 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, - 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc. + 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc. This file is part of GCC. @@ -3023,6 +3023,11 @@ commutative_operand_precedence (rtx op) { /* Constants always come the second operand. Prefer "nice" constants. */ if (GET_CODE (op) == CONST_INT) + return -7; + if (GET_CODE (op) == CONST_DOUBLE) + return -6; + op = avoid_constant_pool_reference (op); + if (GET_CODE (op) == CONST_INT) return -5; if (GET_CODE (op) == CONST_DOUBLE) return -4; |