[llvm] r298721 - [AMDGPU] Add AMDGPUAliasAnalysis to opt pipeline

[Stanislav Mekhanoshin via llvm-commits]

Author: rampitec
Date: Fri Mar 24 13:01:14 2017
New Revision: 298721

URL: http://llvm.org/viewvc/llvm-project?rev=298721&view=rev
Log:
[AMDGPU] Add AMDGPUAliasAnalysis to opt pipeline

Previously it was added only to the BE.

Differential Revision: https://reviews.llvm.org/D31323

Added:
    llvm/trunk/test/CodeGen/AMDGPU/amdgpu-alias-analysis.ll
Modified:
    llvm/trunk/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp

Modified: llvm/trunk/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp?rev=298721&r1=298720&r2=298721&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp (original)
+++ llvm/trunk/lib/Target/AMDGPU/AMDGPUTargetMachine.cpp Fri Mar 24 13:01:14 2017
@@ -253,15 +253,29 @@ StringRef AMDGPUTargetMachine::getFeatur
     FSAttr.getValueAsString();
 }
 
+static ImmutablePass *createAMDGPUExternalAAWrapperPass() {
+  return createExternalAAWrapperPass([](Pass &P, Function &, AAResults &AAR) {
+      if (auto *WrapperPass = P.getAnalysisIfAvailable<AMDGPUAAWrapperPass>())
+        AAR.addAAResult(WrapperPass->getResult());
+      });
+}
+
 void AMDGPUTargetMachine::adjustPassManager(PassManagerBuilder &Builder) {
   Builder.DivergentTarget = true;
 
   bool Internalize = InternalizeSymbols &&
                      (getOptLevel() > CodeGenOpt::None) &&
                      (getTargetTriple().getArch() == Triple::amdgcn);
+  bool AMDGPUAA = EnableAMDGPUAliasAnalysis && getOptLevel() > CodeGenOpt::None;
+
   Builder.addExtension(
     PassManagerBuilder::EP_ModuleOptimizerEarly,
-    [Internalize](const PassManagerBuilder &, legacy::PassManagerBase &PM) {
+    [Internalize, AMDGPUAA](const PassManagerBuilder &,
+                            legacy::PassManagerBase &PM) {
+      if (AMDGPUAA) {
+        PM.add(createAMDGPUAAWrapperPass());
+        PM.add(createAMDGPUExternalAAWrapperPass());
+      }
       PM.add(createAMDGPUUnifyMetadataPass());
       if (Internalize) {
         PM.add(createInternalizePass([=](const GlobalValue &GV) -> bool {
@@ -286,6 +300,15 @@ void AMDGPUTargetMachine::adjustPassMana
         PM.add(createAMDGPUAlwaysInlinePass());
       }
   });
+
+  Builder.addExtension(
+    PassManagerBuilder::EP_EarlyAsPossible,
+    [AMDGPUAA](const PassManagerBuilder &, legacy::PassManagerBase &PM) {
+      if (AMDGPUAA) {
+        PM.add(createAMDGPUAAWrapperPass());
+        PM.add(createAMDGPUExternalAAWrapperPass());
+      }
+  });
 }
 
 //===----------------------------------------------------------------------===//

Added: llvm/trunk/test/CodeGen/AMDGPU/amdgpu-alias-analysis.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/AMDGPU/amdgpu-alias-analysis.ll?rev=298721&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/AMDGPU/amdgpu-alias-analysis.ll (added)
+++ llvm/trunk/test/CodeGen/AMDGPU/amdgpu-alias-analysis.ll Fri Mar 24 13:01:14 2017
@@ -0,0 +1,8 @@
+; RUN: opt -mtriple=amdgcn-- -O3 -aa-eval -print-all-alias-modref-info -disable-output < %s 2>&1 | FileCheck %s
+
+; CHECK: NoAlias:      i8 addrspace(1)* %p1, i8* %p
+
+define void @test(i8* %p, i8 addrspace(1)* %p1) {
+  ret void
+}
+