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| author | Alexandre Oliva <aoliva@redhat.com> | 2005-04-16 21:42:26 +0000 |
|---|---|---|
| committer | Alexandre Oliva <aoliva@gcc.gnu.org> | 2005-04-16 21:42:26 +0000 |
| commit | 92750a3929a3974cd0d4baa6c2da3258a2d43b2b (patch) | |
| tree | c27abe6e884efe6fc4512ac1e821f186a8dec173 /gcc | |
| parent | 29836d07d5175c17b66ded6083283117b26f13a7 (diff) | |
| download | gcc-92750a3929a3974cd0d4baa6c2da3258a2d43b2b.zip gcc-92750a3929a3974cd0d4baa6c2da3258a2d43b2b.tar.gz gcc-92750a3929a3974cd0d4baa6c2da3258a2d43b2b.tar.bz2 | |
re PR target/20126 (Inlined memcmp makes one argument null on entry)
PR target/20126
* loop.c (loop_givs_rescan): Handle non-replaceable (plus (reg)
(const)).
From-SVN: r98238
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/loop.c | 9 |
2 files changed, 13 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 38556bf..9bba2c5 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,9 @@ 2005-04-16 Alexandre Oliva <aoliva@redhat.com> + PR target/20126 + * loop.c (loop_givs_rescan): Handle non-replaceable (plus (reg) + (const)). + * tree-scalar-evolution.c (interpret_rhs_modify_expr): Fix typo in comment. @@ -5488,6 +5488,15 @@ loop_givs_rescan (struct loop *loop, struct iv_class *bl, rtx *reg_map) loop_insn_emit_before (loop, 0, v->insn, gen_move_insn (*v->location, v->new_reg)); + else if (GET_CODE (*v->location) == PLUS + && REG_P (XEXP (*v->location, 0)) + && CONSTANT_P (XEXP (*v->location, 1))) + loop_insn_emit_before (loop, 0, v->insn, + gen_move_insn (XEXP (*v->location, 0), + gen_rtx_MINUS + (GET_MODE (*v->location), + v->new_reg, + XEXP (*v->location, 1)))); else { /* If it wasn't a reg, create a pseudo and use that. */ |