commit 2810f92d099ac7442f661abbfa73734835a58e25
author Nicolas Geoffray <ngeoffray@google.com> Fri Oct 31 14:27:37 2014 +0000
committer Nicolas Geoffray <ngeoffray@google.com> Fri Oct 31 14:56:00 2014 +0000
tree 197012940ef5af52c9c802396f1c2d3b5a5742bd
parent a9014f977ae90373f5bad4cf812c2bda810b10f8

Disable kNoOutputOverlap optimization.

Found a case where it does not work. Need to think more about it
as well as write a regression test.

Change-Id: I2abe05c84f2c608d622fbe6d373b6dcdb68f4162

compiler/optimizing/register_allocator.cc

diff --git a/compiler/optimizing/register_allocator.cc b/compiler/optimizing/register_allocator.cc
index 497e9b9..df63530 100644
--- a/compiler/optimizing/register_allocator.cc
+++ b/compiler/optimizing/register_allocator.cc
@@ -253,9 +253,6 @@
     current->SetFrom(position + 1);
     current->SetRegister(output.reg());
     BlockRegister(output, position, position + 1);
-  } else if (!locations->OutputOverlapsWithInputs()) {
-    // Shift the interval's start by one to not interfere with the inputs.
-    current->SetFrom(position + 1);
   } else if (output.IsStackSlot() || output.IsDoubleStackSlot()) {
     current->SetSpillSlot(output.GetStackIndex());
   }