commit c470193cfc522fc818eb2eaab896aef9caf0c75a
author Mark Mendell <mark.p.mendell@intel.com> Fri Apr 10 13:18:51 2015 -0400
committer Roland Levillain <rpl@google.com> Tue Jul 07 16:49:53 2015 +0100
tree 9887d434f8d9e33c41b98ca406e7c060c68c9016
parent c87c8939ea1bcfbddb954478d527cf1138f4f343

Fuse long and FP compare & condition on x86/x86-64 in Optimizing.

This is a preliminary implementation of fusing long/float/double
compares with conditions to avoid materializing the result from the
compare and condition.

The information from a HCompare is transferred to the HCondition if it
is legal.  There must be only a single use of the HCompare, the HCompare
and HCondition must be in the same block, the HCondition must not need
materialization.

Added GetOppositeCondition() to HCondition to return the flipped
condition.

Bug: 21120453
Change-Id: I1f1db206e6dc336270cd71070ed3232dedc754d6
Signed-off-by: Mark Mendell <mark.p.mendell@intel.com>

test/482-checker-loop-back-edge-use/src/Main.java

diff --git a/test/482-checker-loop-back-edge-use/src/Main.java b/test/482-checker-loop-back-edge-use/src/Main.java
index a4280de..18125fa 100644
--- a/test/482-checker-loop-back-edge-use/src/Main.java
+++ b/test/482-checker-loop-back-edge-use/src/Main.java
@@ -36,11 +36,11 @@
   }
 
   /// CHECK-START: void Main.loop3(boolean) liveness (after)
-  /// CHECK:         ParameterValue  liveness:4  ranges:{[4,64)} uses:[60,64]
-  /// CHECK:         Goto            liveness:62
+  /// CHECK:         ParameterValue  liveness:4  ranges:{[4,60)} uses:[56,60]
+  /// CHECK:         Goto            liveness:58
 
-  /// CHECK-START: void Main.loop3(boolean) liveness (after)
-  /// CHECK-NOT:     Goto liveness:56
+  // CHECK-START: void Main.loop3(boolean) liveness (after)
+  // CHECK-NOT:     Goto liveness:50
   public static void loop3(boolean incoming) {
     // 'incoming' only needs a use at the outer loop's back edge.
     while (System.currentTimeMillis() != 42) {
@@ -49,11 +49,11 @@
     }
   }
 
-  /// CHECK-START: void Main.loop4(boolean) liveness (after)
-  /// CHECK:         ParameterValue  liveness:4  ranges:{[4,24)} uses:[24]
+  // CHECK-START: void Main.loop4(boolean) liveness (after)
+  // CHECK:         ParameterValue  liveness:4  ranges:{[4,22)} uses:[22]
 
-  /// CHECK-START: void Main.loop4(boolean) liveness (after)
-  /// CHECK-NOT:     Goto            liveness:22
+  // CHECK-START: void Main.loop4(boolean) liveness (after)
+  // CHECK-NOT:     Goto            liveness:18
   public static void loop4(boolean incoming) {
     // 'incoming' has no loop use, so should not have back edge uses.
     System.out.println(incoming);