* ree.c (add_removable_extension): Use reg_overlap_mentioned_p

	rather than testing hard register #s.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231719 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 1d2a994330dab24be9859a73c3a0e6548759a44e..a8475b760b34cc17abcffefcec27a50b40b5dbf8 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2015-12-16  Jeff Law  <law@redhat.com>
+
+       * ree.c (add_removable_extension): Use reg_overlap_mentioned_p
+       rather than testing hard register #s.
+
 2015-12-16  Nathan Sidwell  <nathan@acm.org>
 
        * config/nvptx/nvptx.h (OUTGOING_STATIC_CHAIN_REGNUM): Remove.

diff --git a/gcc/ree.c b/gcc/ree.c
index 6cfc477470e608671a507a6988d304585fe84be2..d12e24dec1b34acffc0853f0fb5d2e0f4c141403 100644 (file)
--- a/gcc/ree.c
+++ b/gcc/ree.c
@@ -1085,7 +1085,7 @@ add_removable_extension (const_rtx expr, rtx_insn *insn,
         code in combine_reaching_defs will handle that case correctly.  */
       if ((HARD_REGNO_NREGS (REGNO (dest), mode)
           != HARD_REGNO_NREGS (REGNO (reg), GET_MODE (reg)))
-         && REGNO (dest) == REGNO (reg))
+         && reg_overlap_mentioned_p (dest, reg))
        return;
 
       /* Then add the candidate to the list and insert the reaching definitions