From: Eric Botcazou <ebotcazou@adacore.com>
Date: Wed, 4 Jul 2018 12:56:48 +0000 (+0000)
Subject: re PR middle-end/86380 (incorrect comparison in function choose_multiplier)
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=04f8c98c5137cf912095bc623e09b34616fc2fe8;p=gcc.git

re PR middle-end/86380 (incorrect comparison in function choose_multiplier)

	PR middle-end/86380
	* expmed.c (choose_multiplier): Fix incorrect comparison with mask.

From-SVN: r262401
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 5ff16010a0e..b8989153504 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2018-07-04  Eric Botcazou  <ebotcazou@adacore.com>
+
+	PR middle-end/86380
+	* expmed.c (choose_multiplier): Fix incorrect comparison with mask.
+
 2018-07-04  Aldy Hernandez  <aldyh@redhat.com>
 
 	* tree-vrp.c (extract_range_from_binary_expr_1): Initialize
diff --git a/gcc/expmed.c b/gcc/expmed.c
index 4c74e7dc2ea..b01e1946898 100644
--- a/gcc/expmed.c
+++ b/gcc/expmed.c
@@ -3678,7 +3678,7 @@ choose_multiplier (unsigned HOST_WIDE_INT d, int n, int precision,
     {
       unsigned HOST_WIDE_INT mask = (HOST_WIDE_INT_1U << n) - 1;
       *multiplier_ptr = mhigh.to_uhwi () & mask;
-      return mhigh.to_uhwi () >= mask;
+      return mhigh.to_uhwi () > mask;
     }
   else
     {