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| author | Richard Kenner <kenner@gcc.gnu.org> | 1997-01-03 11:13:19 -0500 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1997-01-03 11:13:19 -0500 |
| commit | 35d9eabb9dfc334f2a96e3f2dbcc8a9bdebc9970 (patch) | |
| tree | c1ad3899cff25226a75fc071ecc32553ed293473 /gcc | |
| parent | b685dbaebcd1ac317b3095f251d6a55ad055fd27 (diff) | |
| download | gcc-35d9eabb9dfc334f2a96e3f2dbcc8a9bdebc9970.zip gcc-35d9eabb9dfc334f2a96e3f2dbcc8a9bdebc9970.tar.gz gcc-35d9eabb9dfc334f2a96e3f2dbcc8a9bdebc9970.tar.bz2 | |
(rtx_equal_for_thread_p): Return 0 for floating-point.
From-SVN: r13361
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/jump.c | 9 |
1 files changed, 8 insertions, 1 deletions
@@ -1,5 +1,5 @@ /* Optimize jump instructions, for GNU compiler. - Copyright (C) 1987, 88, 89, 91-95, 1996 Free Software Foundation, Inc. + Copyright (C) 1987, 88, 89, 91-96, 1997 Free Software Foundation, Inc. This file is part of GNU CC. @@ -4506,6 +4506,13 @@ rtx_equal_for_thread_p (x, y, yinsn) if (GET_MODE (x) != GET_MODE (y)) return 0; + /* For floating-point, consider everything unequal. This is a bit + pessimistic, but this pass would only rarely do anything for FP + anyway. */ + if (TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT + && FLOAT_MODE_P (GET_MODE (x)) && ! flag_fast_math) + return 0; + /* For commutative operations, the RTX match if the operand match in any order. Also handle the simple binary and unary cases without a loop. */ if (code == EQ || code == NE || GET_RTX_CLASS (code) == 'c') |