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| author | Kazu Hirata <kazu@cs.umass.edu> | 2005-01-26 12:44:58 +0000 |
|---|---|---|
| committer | Kazu Hirata <kazu@gcc.gnu.org> | 2005-01-26 12:44:58 +0000 |
| commit | 7533544070c29d561a1b570c08f126123264e150 (patch) | |
| tree | 75690121c889346e831191ed7ca5ee1886e91923 /gcc/cse.c | |
| parent | 4018444567e39b5e06f07948de9031476dbb7f1d (diff) | |
| download | gcc-7533544070c29d561a1b570c08f126123264e150.zip gcc-7533544070c29d561a1b570c08f126123264e150.tar.gz gcc-7533544070c29d561a1b570c08f126123264e150.tar.bz2 | |
* cse.c (fold_rtx): Call equiv_constant only when necessary.
From-SVN: r94260
Diffstat (limited to 'gcc/cse.c')
| -rw-r--r-- | gcc/cse.c | 5 |
1 files changed, 3 insertions, 2 deletions
@@ -3877,8 +3877,6 @@ fold_rtx (rtx x, rtx insn) code = find_comparison_args (code, &folded_arg0, &folded_arg1, &mode_arg0, &mode_arg1); - const_arg0 = equiv_constant (folded_arg0); - const_arg1 = equiv_constant (folded_arg1); /* If the mode is VOIDmode or a MODE_CC mode, we don't know what kinds of things are being compared, so we can't do @@ -3887,6 +3885,9 @@ fold_rtx (rtx x, rtx insn) if (mode_arg0 == VOIDmode || GET_MODE_CLASS (mode_arg0) == MODE_CC) break; + const_arg0 = equiv_constant (folded_arg0); + const_arg1 = equiv_constant (folded_arg1); + /* If we do not now have two constants being compared, see if we can nevertheless deduce some things about the comparison. */ |