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| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/simplify-rtx.c | 4 |
2 files changed, 9 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 86d94094bcd..8c83eb61cc2 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2002-05-25 Roger Sayle <roger@eyesopen.com> + + * simplify-rtx.c (simplify_gen_relational): Simplify the RTX + (cond (compare x y) 0) into the equivalent (cond x y). + 2002-05-25 Gabriel Dos Reis <gdr@codesourcery.com> * toplev.c (output_clean_symbol_name): Use xstrdup. Fix thinko. diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index 36bcc1a22dc..6ec33a3935b 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -232,6 +232,10 @@ simplify_gen_relational (code, mode, cmp_mode, op0, op1) if ((tem = simplify_relational_operation (code, cmp_mode, op0, op1)) != 0) return tem; + /* If op0 is a compare, extract the comparison arguments from it. */ + if (GET_CODE (op0) == COMPARE && op1 == const0_rtx) + op1 = XEXP (op0, 1), op0 = XEXP (op0, 0); + /* Put complex operands first and constants second. */ if (swap_commutative_operands_p (op0, op1)) tem = op0, op0 = op1, op1 = tem, code = swap_condition (code); |