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 865479d30061d8ef3884dd13ad09971b48f5e571..b5d789c38e4416d74101b6e7ea0b1abe5dbaed15 100644 (file)
--- 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 8646e3ebe868918e01ad04e5a48c6a5ddb6410e3..b432c39c01139ba2f0a4f07bd9788d2f59f15a9f 100644 (file)
--- 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