Add a new convenience pass for testing InstructionSimplify. Previously

it could only be tested indirectly, via instcombine, gvn or some other
pass that makes use of InstructionSimplify, which means that testcases
had to be carefully contrived to dance around any other transformations
that that pass did.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122264 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/InitializePasses.h b/include/llvm/InitializePasses.h
index 0fe94c4..12bbc28 100644 (file)
--- a/include/llvm/InitializePasses.h
+++ b/include/llvm/InitializePasses.h
@@ -217,6 +217,7 @@ void initializeUnreachableBlockElimPass(PassRegistry&);
 void initializeUnreachableMachineBlockElimPass(PassRegistry&);
 void initializeVerifierPass(PassRegistry&);
 void initializeVirtRegMapPass(PassRegistry&);
+void initializeInstSimplifierPass(PassRegistry&);
 
 }
 

diff --git a/include/llvm/LinkAllPasses.h b/include/llvm/LinkAllPasses.h
index c260425..69dc683 100644 (file)
--- a/include/llvm/LinkAllPasses.h
+++ b/include/llvm/LinkAllPasses.h
@@ -147,6 +147,7 @@ namespace {
       (void) llvm::createLowerAtomicPass();
       (void) llvm::createCorrelatedValuePropagationPass();
       (void) llvm::createMemDepPrinter();
+      (void) llvm::createInstructionSimplifierPass();
 
       (void)new llvm::IntervalPartition();
       (void)new llvm::FindUsedTypes();

diff --git a/include/llvm/Transforms/Scalar.h b/include/llvm/Transforms/Scalar.h
index fa84845..84690fd 100644 (file)
--- a/include/llvm/Transforms/Scalar.h
+++ b/include/llvm/Transforms/Scalar.h
@@ -322,6 +322,13 @@ Pass *createLowerAtomicPass();
 //
 Pass *createCorrelatedValuePropagationPass();
 
+//===----------------------------------------------------------------------===//
+//
+// InstructionSimplifier - Remove redundant instructions.
+//
+FunctionPass *createInstructionSimplifierPass();
+extern char &InstructionSimplifierID;
+
 } // End llvm namespace
 
 #endif

diff --git a/lib/Transforms/Utils/CMakeLists.txt b/lib/Transforms/Utils/CMakeLists.txt
index 9d75f1d..5b76bb2 100644 (file)
--- a/lib/Transforms/Utils/CMakeLists.txt
+++ b/lib/Transforms/Utils/CMakeLists.txt
@@ -21,6 +21,7 @@ add_llvm_library(LLVMTransformUtils
   PromoteMemoryToRegister.cpp
   SSAUpdater.cpp
   SimplifyCFG.cpp
+  SimplifyInstructions.cpp
   UnifyFunctionExitNodes.cpp
   Utils.cpp
   ValueMapper.cpp

diff --git a/lib/Transforms/Utils/Utils.cpp b/lib/Transforms/Utils/Utils.cpp
index 94d8fbf..24e8c8f 100644 (file)
--- a/lib/Transforms/Utils/Utils.cpp
+++ b/lib/Transforms/Utils/Utils.cpp
@@ -28,6 +28,7 @@ void llvm::initializeTransformUtils(PassRegistry &Registry) {
   initializeLowerSwitchPass(Registry);
   initializePromotePassPass(Registry);
   initializeUnifyFunctionExitNodesPass(Registry);
+  initializeInstSimplifierPass(Registry);
 }
 
 /// LLVMInitializeTransformUtils - C binding for initializeTransformUtilsPasses.