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riscv-gcc-1
Commit 75335440 by Kazu Hirata Committed by Kazu Hirata
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* cse.c (fold_rtx): Call equiv_constant only when necessary. 

From-SVN: r94260
parent 40184445
Showing with 7 additions and 2 deletions
gcc/ChangeLog
2005-01-26 Kazu Hirata <kazu@cs.umass.edu>
* cse.c (fold_rtx): Call equiv_constant only when necessary.
2005-01-26 Bernd Schmidt <bernd.schmidt@analog.com>
* function.c (expand_function_end): If current_function_calls_alloca,
......
gcc/cse.c
......@@ -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. */
......
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