diff options
| author | drow <drow@138bc75d-0d04-0410-961f-82ee72b054a4> | 2004-07-25 17:01:49 +0000 |
|---|---|---|
| committer | drow <drow@138bc75d-0d04-0410-961f-82ee72b054a4> | 2004-07-25 17:01:49 +0000 |
| commit | f2ee4302e9c912044a50a6b619f753598b66a73a (patch) | |
| tree | 005f8e1bbe2b08856b76f9db9bfcb47eafa7b01f /gcc/regmove.c | |
| parent | f9e182acea823af55710fb1fbcc63ba14e278ddf (diff) | |
| download | gcc-f2ee4302e9c912044a50a6b619f753598b66a73a.tar.gz | |
* regmove.c (optimize_reg_copy_1): Don't try to replace call-used
hard registers.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@85149 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/regmove.c')
| -rw-r--r-- | gcc/regmove.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/gcc/regmove.c b/gcc/regmove.c index 5816831dc6c..5bd6f40e21f 100644 --- a/gcc/regmove.c +++ b/gcc/regmove.c @@ -431,6 +431,9 @@ optimize_reg_copy_1 (rtx insn, rtx dest, rtx src) || (sregno < FIRST_PSEUDO_REGISTER && asm_noperands (PATTERN (p)) >= 0 && reg_overlap_mentioned_p (src, PATTERN (p))) + /* Don't change hard registers used by a call. */ + || (CALL_P (p) && sregno < FIRST_PSEUDO_REGISTER + && find_reg_fusage (p, USE, src)) /* Don't change a USE of a register. */ || (GET_CODE (PATTERN (p)) == USE && reg_overlap_mentioned_p (src, XEXP (PATTERN (p), 0)))) |