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| author | rakdver <rakdver@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-06-20 06:56:26 +0000 |
|---|---|---|
| committer | rakdver <rakdver@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-06-20 06:56:26 +0000 |
| commit | 605dec4e8cdc1c51af442595b52ca4fb2151939d (patch) | |
| tree | 0586f0d4e8a33a16d92e40e1e9ca7e7d5b3a3c3b /gcc/loop-iv.c | |
| parent | cc142ae50416cb403a61ba5cde1c8db7606ab0f0 (diff) | |
| download | gcc-605dec4e8cdc1c51af442595b52ca4fb2151939d.tar.gz | |
PR rtl-optimization/32405
* loop-iv.c (iv_get_reaching_def): Fail for partial defs.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@125881 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/loop-iv.c')
| -rw-r--r-- | gcc/loop-iv.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gcc/loop-iv.c b/gcc/loop-iv.c index 5016aaf46ef..f87f968022a 100644 --- a/gcc/loop-iv.c +++ b/gcc/loop-iv.c @@ -347,6 +347,11 @@ iv_get_reaching_def (rtx insn, rtx reg, struct df_ref **def) return GRD_INVALID; adef = DF_REF_CHAIN (use)->ref; + + /* We do not handle setting only part of the register. */ + if (adef->flags & DF_REF_READ_WRITE) + return GRD_INVALID; + def_insn = DF_REF_INSN (adef); def_bb = DF_REF_BB (adef); use_bb = BLOCK_FOR_INSN (insn); |