Remove redundant unshare_expr from ipa-prop

[Kugan]

Hi,

There is a redundant unshare_expr in ipa-prop. Attached patch removes
it. Bootstrapped and regression tested on x86_64-pc-linux-gnu with no
new regressions.

Is this OK for trunk?

Thanks,
Kugan

gcc/ChangeLog:

2016-01-22  Kugan Vivekanandarajah  <kug...@linaro.org>

        * ipa-prop.c (ipa_set_jf_constant): Remove redundant unshare_expr.

diff --git a/gcc/ipa-prop.c b/gcc/ipa-prop.c
index 06a9aa2..d62c704 100644
--- a/gcc/ipa-prop.c
+++ b/gcc/ipa-prop.c
@@ -402,9 +402,6 @@ static void
 ipa_set_jf_constant (struct ipa_jump_func *jfunc, tree constant,
                     struct cgraph_edge *cs)
 {
-  constant = unshare_expr (constant);
-  if (constant && EXPR_P (constant))
-    SET_EXPR_LOCATION (constant, UNKNOWN_LOCATION);
   jfunc->type = IPA_JF_CONST;
   jfunc->value.constant.value = unshare_expr_without_location (constant);