From: Dan Gohman <gohman@apple.com>
Date: Tue, 16 Dec 2008 06:21:45 +0000 (+0000)
Subject: Enable anti-dependence breaking by default when post-RA scheduling is enabled.
X-Git-Tag: android-x86-6.0-r1~1047^2~16826
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=5d36e5a5fe59c26f71132b31cf34c3a314f07528;p=android-x86%2Fexternal-llvm.git

Enable anti-dependence breaking by default when post-RA scheduling is enabled.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61078 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/PostRASchedulerList.cpp b/lib/CodeGen/PostRASchedulerList.cpp
index 865479d3006..b5d789c38e4 100644
--- a/lib/CodeGen/PostRASchedulerList.cpp
+++ b/lib/CodeGen/PostRASchedulerList.cpp
@@ -43,7 +43,7 @@ STATISTIC(NumStalls, "Number of pipeline stalls");
 static cl::opt<bool>
 EnableAntiDepBreaking("break-anti-dependencies",
                       cl::desc("Break scheduling anti-dependencies"),
-                      cl::init(false));
+                      cl::init(true));
 
 namespace {
   class VISIBILITY_HIDDEN PostRAScheduler : public MachineFunctionPass {
diff --git a/test/CodeGen/X86/break-anti-dependencies.ll b/test/CodeGen/X86/break-anti-dependencies.ll
index 8646e3ebe86..b432c39c011 100644
--- a/test/CodeGen/X86/break-anti-dependencies.ll
+++ b/test/CodeGen/X86/break-anti-dependencies.ll
@@ -1,4 +1,4 @@
-; RUN: llvm-as < %s | llc -march=x86-64 -disable-post-RA-scheduler=false > %t
+; RUN: llvm-as < %s | llc -march=x86-64 -disable-post-RA-scheduler=false -break-anti-dependencies=false > %t
 ; RUN:   grep {%xmm0} %t | count 14
 ; RUN:   not grep {%xmm1} %t
 ; RUN: llvm-as < %s | llc -march=x86-64 -disable-post-RA-scheduler=false -break-anti-dependencies > %t