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 5ff16010a0ea667200b0f56ca912b50e1622c292..b898915350427866181617ffdac10d79de4bc410 100644 (file)
--- 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 4c74e7dc2ea448fb1c1dd69d197b4bca23668b44..b01e1946898a03967929b6ec5b00a1a9061569a2 100644 (file)
--- 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
     {