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authorYiran Wang <yiran@google.com>2015-06-23 15:33:17 -0700
committerYiran Wang <yiran@google.com>2015-06-29 10:56:28 -0700
commit1d9fec7937f45dde5e04cac966a2d9a12f2fc15a (patch)
tree3fbcd18a379a05fd6d43491a107e1f36bc61b185 /gcc-4.9/gcc/cprop.c
parentf378ebf14df0952eae870c9865bab8326aa8f137 (diff)
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Synchronize with google/gcc-4_9 to r224707 (from r214835)
Change-Id: I3d6f06fc613c8f8b6a82143dc44b7338483aac5d
Diffstat (limited to 'gcc-4.9/gcc/cprop.c')
-rw-r--r--gcc-4.9/gcc/cprop.c7
1 files changed, 2 insertions, 5 deletions
diff --git a/gcc-4.9/gcc/cprop.c b/gcc-4.9/gcc/cprop.c
index 6a3429e19..c3acb05c1 100644
--- a/gcc-4.9/gcc/cprop.c
+++ b/gcc-4.9/gcc/cprop.c
@@ -790,11 +790,8 @@ try_replace_reg (rtx from, rtx to, rtx insn)
/* REG_EQUAL may get simplified into register.
We don't allow that. Remove that note. This code ought
not to happen, because previous code ought to synthesize
- reg-reg move, but be on the safe side. The REG_EQUAL note is
- also removed when the source is a constant. */
- if (note && REG_NOTE_KIND (note) == REG_EQUAL
- && (REG_P (XEXP (note, 0))
- || (set && CONSTANT_P (SET_SRC (set)))))
+ reg-reg move, but be on the safe side. */
+ if (note && REG_NOTE_KIND (note) == REG_EQUAL && REG_P (XEXP (note, 0)))
remove_note (insn, note);
return success;