diff options
| author | aoliva <aoliva@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-02-11 13:35:14 +0000 |
|---|---|---|
| committer | aoliva <aoliva@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-02-11 13:35:14 +0000 |
| commit | 5ee24cd994e8d600a3e2f0298c52082b29ecca38 (patch) | |
| tree | 144ced58776e7edc3dc5b6d761a57485acb2848b /gcc/regrename.c | |
| parent | d5c9a99f956b5b0af34e770545b7e723b8dfea28 (diff) | |
| download | gcc-5ee24cd994e8d600a3e2f0298c52082b29ecca38.tar.gz | |
* regrename.c (regrename_optimize): Don't accept a
part-clobbered register if the replaced register is not part
clobbered.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@49676 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/regrename.c')
| -rw-r--r-- | gcc/regrename.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/gcc/regrename.c b/gcc/regrename.c index b830b889907..135eaefd0e1 100644 --- a/gcc/regrename.c +++ b/gcc/regrename.c @@ -325,7 +325,12 @@ regrename_optimize () /* See whether it accepts all modes that occur in definition and uses. */ for (tmp = this; tmp; tmp = tmp->next_use) - if (! HARD_REGNO_MODE_OK (new_reg, GET_MODE (*tmp->loc))) + if (! HARD_REGNO_MODE_OK (new_reg, GET_MODE (*tmp->loc)) + || (tmp->need_caller_save_reg + && ! (HARD_REGNO_CALL_PART_CLOBBERED + (reg, GET_MODE (*tmp->loc))) + && (HARD_REGNO_CALL_PART_CLOBBERED + (new_reg, GET_MODE (*tmp->loc))))) break; if (! tmp) { |