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changeset 22014:35b153c26783

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8078666: JVM fastdebug build compiled with GCC 5 asserts with "widen increases" Summary: do the math on the unsigned type where overflows are well defined Reviewed-by: kvn, aph
author sgehwolf
date Wed, 29 Apr 2015 12:23:48 -0700
parents 3904e33db5b3
children 7645c463fb65 d1a41fbfcfd2
files src/share/vm/opto/type.cpp
diffstat 1 files changed, 8 insertions(+), 8 deletions(-) [+]
line wrap: on
line diff
--- a/src/share/vm/opto/type.cpp	Thu Jun 18 18:09:19 2015 +0200
+++ b/src/share/vm/opto/type.cpp	Wed Apr 29 12:23:48 2015 -0700
@@ -1182,11 +1182,11 @@
   // Certain normalizations keep us sane when comparing types.
   // The 'SMALLINT' covers constants and also CC and its relatives.
   if (lo <= hi) {
-    if ((juint)(hi - lo) <= SMALLINT)  w = Type::WidenMin;
-    if ((juint)(hi - lo) >= max_juint) w = Type::WidenMax; // TypeInt::INT
+    if (((juint)hi - lo) <= SMALLINT)  w = Type::WidenMin;
+    if (((juint)hi - lo) >= max_juint) w = Type::WidenMax; // TypeInt::INT
   } else {
-    if ((juint)(lo - hi) <= SMALLINT)  w = Type::WidenMin;
-    if ((juint)(lo - hi) >= max_juint) w = Type::WidenMin; // dual TypeInt::INT
+    if (((juint)lo - hi) <= SMALLINT)  w = Type::WidenMin;
+    if (((juint)lo - hi) >= max_juint) w = Type::WidenMin; // dual TypeInt::INT
   }
   return w;
 }
@@ -1440,11 +1440,11 @@
   // Certain normalizations keep us sane when comparing types.
   // The 'SMALLINT' covers constants.
   if (lo <= hi) {
-    if ((julong)(hi - lo) <= SMALLINT)   w = Type::WidenMin;
-    if ((julong)(hi - lo) >= max_julong) w = Type::WidenMax; // TypeLong::LONG
+    if (((julong)hi - lo) <= SMALLINT)   w = Type::WidenMin;
+    if (((julong)hi - lo) >= max_julong) w = Type::WidenMax; // TypeLong::LONG
   } else {
-    if ((julong)(lo - hi) <= SMALLINT)   w = Type::WidenMin;
-    if ((julong)(lo - hi) >= max_julong) w = Type::WidenMin; // dual TypeLong::LONG
+    if (((julong)lo - hi) <= SMALLINT)   w = Type::WidenMin;
+    if (((julong)lo - hi) >= max_julong) w = Type::WidenMin; // dual TypeLong::LONG
   }
   return w;
 }