diff options
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/ira.c | 6 |
2 files changed, 12 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 8276d64..87ee0f9 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,9 +1,14 @@ 2014-12-15 Vladimir Makarov <vmakarov@redhat.com> + PR target/62642 + * ira.c (rtx_moveable_p): Prevent UNSPEC_VOLATILE moves. + +2014-12-15 Vladimir Makarov <vmakarov@redhat.com> + * ira-int.h (ira_prohibited_class_mode_regs): Remove. (struct target_ira_int): Move x_ira_prohibited_class_mode_regs to ... - * ira.h (struct target_ira_int): ... here. + * ira.h (struct target_ira): ... here. (ira_prohibited_class_mode_regs): Define. * lra-constraints.c (process_alt_operands): Add one more condition to refuse alternative when reload pseudo of given class can not @@ -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; } |