[llvm] r216978 - Add pass-manager flags to use CFL AA

[Hal Finkel]

Author: hfinkel
Date: Tue Sep  2 17:12:54 2014
New Revision: 216978

URL: http://llvm.org/viewvc/llvm-project?rev=216978&view=rev
Log:
Add pass-manager flags to use CFL AA

Add -use-cfl-aa (and -use-cfl-aa-in-codegen) to add CFL AA in the default pass
managers (for easy testing).

Modified:
    llvm/trunk/lib/CodeGen/Passes.cpp
    llvm/trunk/lib/Transforms/IPO/PassManagerBuilder.cpp

Modified: llvm/trunk/lib/CodeGen/Passes.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/Passes.cpp?rev=216978&r1=216977&r2=216978&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/Passes.cpp (original)
+++ llvm/trunk/lib/CodeGen/Passes.cpp Tue Sep  2 17:12:54 2014
@@ -99,6 +99,10 @@ static cl::opt<bool> MISchedPostRA("misc
 static cl::opt<bool> EarlyLiveIntervals("early-live-intervals", cl::Hidden,
     cl::desc("Run live interval analysis earlier in the pipeline"));
 
+static cl::opt<bool> UseCFLAA("use-cfl-aa-in-codegen",
+  cl::init(false), cl::Hidden,
+  cl::desc("Enable the new, experimental CFL alias analysis in CodeGen"));
+
 /// Allow standard passes to be disabled by command line options. This supports
 /// simple binary flags that either suppress the pass or do nothing.
 /// i.e. -disable-mypass=false has no effect.
@@ -376,6 +380,8 @@ void TargetPassConfig::addIRPasses() {
   // Add TypeBasedAliasAnalysis before BasicAliasAnalysis so that
   // BasicAliasAnalysis wins if they disagree. This is intended to help
   // support "obvious" type-punning idioms.
+  if (UseCFLAA)
+    addPass(createCFLAliasAnalysisPass());
   addPass(createTypeBasedAliasAnalysisPass());
   addPass(createScopedNoAliasAAPass());
   addPass(createBasicAliasAnalysisPass());

Modified: llvm/trunk/lib/Transforms/IPO/PassManagerBuilder.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/IPO/PassManagerBuilder.cpp?rev=216978&r1=216977&r2=216978&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/IPO/PassManagerBuilder.cpp (original)
+++ llvm/trunk/lib/Transforms/IPO/PassManagerBuilder.cpp Tue Sep  2 17:12:54 2014
@@ -66,6 +66,9 @@ RunSLPAfterLoopVectorization("run-slp-af
   cl::desc("Run the SLP vectorizer (and BB vectorizer) after the Loop "
            "vectorizer instead of before"));
 
+static cl::opt<bool> UseCFLAA("use-cfl-aa",
+  cl::init(false), cl::Hidden,
+  cl::desc("Enable the new, experimental CFL alias analysis"));
 
 PassManagerBuilder::PassManagerBuilder() {
     OptLevel = 2;
@@ -120,6 +123,8 @@ PassManagerBuilder::addInitialAliasAnaly
   // Add TypeBasedAliasAnalysis before BasicAliasAnalysis so that
   // BasicAliasAnalysis wins if they disagree. This is intended to help
   // support "obvious" type-punning idioms.
+  if (UseCFLAA)
+    PM.add(createCFLAliasAnalysisPass());
   PM.add(createTypeBasedAliasAnalysisPass());
   PM.add(createScopedNoAliasAAPass());
   PM.add(createBasicAliasAnalysisPass());