diff options
| author | Kazu Hirata <kazu@cs.umass.edu> | 2005-01-28 17:12:08 +0000 |
|---|---|---|
| committer | Kazu Hirata <kazu@gcc.gnu.org> | 2005-01-28 17:12:08 +0000 |
| commit | 01aa1d43e4cf1a77639ea8839d4de13d440eba64 (patch) | |
| tree | 27e8ee34aca7117bcae2cc62360fbfbc5725144c /gcc/cse.c | |
| parent | bd16270bd8c57de83fcc827a259478be9c1967d3 (diff) | |
| download | gcc-01aa1d43e4cf1a77639ea8839d4de13d440eba64.tar.gz | |
* cse.c (fold_rtx) <PC>: Don't optimize.
From-SVN: r94378
Diffstat (limited to 'gcc/cse.c')
| -rw-r--r-- | gcc/cse.c | 12 |
1 files changed, 1 insertions, 11 deletions
diff --git a/gcc/cse.c b/gcc/cse.c index 4bc201424da..762c0c9d87e 100644 --- a/gcc/cse.c +++ b/gcc/cse.c @@ -3265,6 +3265,7 @@ fold_rtx (rtx x, rtx insn) case SYMBOL_REF: case LABEL_REF: case REG: + case PC: /* No use simplifying an EXPR_LIST since they are used only for lists of args in a function call's REG_EQUAL note. */ @@ -3276,17 +3277,6 @@ fold_rtx (rtx x, rtx insn) return prev_insn_cc0; #endif - case PC: - /* If the next insn is a CODE_LABEL followed by a jump table, - PC's value is a LABEL_REF pointing to that label. That - lets us fold switch statements on the VAX. */ - { - rtx next; - if (insn && tablejump_p (insn, &next, NULL)) - return gen_rtx_LABEL_REF (Pmode, next); - } - break; - case SUBREG: /* See if we previously assigned a constant value to this SUBREG. */ if ((new = lookup_as_function (x, CONST_INT)) != 0 |