diff options
| author | vmakarov <vmakarov@138bc75d-0d04-0410-961f-82ee72b054a4> | 2014-12-15 20:04:04 +0000 |
|---|---|---|
| committer | vmakarov <vmakarov@138bc75d-0d04-0410-961f-82ee72b054a4> | 2014-12-15 20:04:04 +0000 |
| commit | 3130aced56fbe6671146fec8b84cf888ecfea122 (patch) | |
| tree | 66048c3dfb9781777bc6aed4106af213685f2349 /gcc/ira.c | |
| parent | 2bd0853710d6bda898e11f38dc704107e0c2823d (diff) | |
| download | gcc-3130aced56fbe6671146fec8b84cf888ecfea122.tar.gz | |
2014-12-15 Vladimir Makarov <vmakarov@redhat.com>
PR target/62642
* ira.c (rtx_moveable_p): Prevent UNSPEC_VOLATILE moves.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@218761 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/ira.c')
| -rw-r--r-- | gcc/ira.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/ira.c b/gcc/ira.c index e610d358177..f08aa23e408 100644 --- a/gcc/ira.c +++ b/gcc/ira.c @@ -4358,6 +4358,12 @@ rtx_moveable_p (rtx *loc, enum op_type type) case CLOBBER: return rtx_moveable_p (&SET_DEST (x), OP_OUT); + case UNSPEC_VOLATILE: + /* It is a bad idea to consider insns with with such rtl + as moveable ones. The insn scheduler also considers them as barrier + for a reason. */ + return false; + default: break; } |