Revert "Added a new IRCanonicalizer pass."

This reverts commit 14d3585.

Author: michalpaszkowski

llvm/docs/Passes.rst

@@ -691,14 +691,6 @@ the mess.
 An interprocedural variant of :ref:`Sparse Conditional Constant Propagation
 <passes-sccp>`.
 
-``-ir-canonicalizer``: Transforms IR into canonical form
---------------------------------------------------------
-
-This pass aims to transform LLVM Modules into a canonical form by reordering and
-renaming instructions while preserving the same semantics. The canonicalizer makes
-it easier to spot semantic differences while diffing two modules which have undergone
-two different passes.
-
 ``-jump-threading``: Jump Threading
 -----------------------------------
 

llvm/docs/ReleaseNotes.rst

@@ -41,10 +41,7 @@ Non-comprehensive list of changes in this release
    for adding a new subsection.
 
 * ...
-* Added a new IRCanonicalizer pass which aims to transform LLVM modules into
-  a canonical form by reordering and renaming instructions while preserving the
-  same semantics. The canonicalizer makes it easier to spot semantic differences
-  when diffing two modules which have undergone different passes.
+
 
 .. NOTE
    If you would like to document a larger change, then you can add a

llvm/include/llvm/InitializePasses.h

@@ -179,7 +179,6 @@ void initializeHotColdSplittingLegacyPassPass(PassRegistry&);
 void initializeHWAddressSanitizerLegacyPassPass(PassRegistry &);
 void initializeIPCPPass(PassRegistry&);
 void initializeIPSCCPLegacyPassPass(PassRegistry&);
-void initializeIRCanonicalizerPass(PassRegistry&);
 void initializeIRCELegacyPassPass(PassRegistry&);
 void initializeIRTranslatorPass(PassRegistry&);
 void initializeIVUsersWrapperPassPass(PassRegistry&);

llvm/include/llvm/LinkAllPasses.h

@@ -118,7 +118,6 @@ namespace {
       (void) llvm::createLoopGuardWideningPass();
       (void) llvm::createIPConstantPropagationPass();
       (void) llvm::createIPSCCPPass();
-      (void) llvm::createIRCanonicalizerPass();
       (void) llvm::createInductiveRangeCheckEliminationPass();
       (void) llvm::createIndVarSimplifyPass();
       (void) llvm::createInstSimplifyLegacyPass();

llvm/include/llvm/Transforms/Utils.h

@@ -46,12 +46,6 @@ extern char &LowerInvokePassID;
 FunctionPass *createInstructionNamerPass();
 extern char &InstructionNamerID;
 
-//===----------------------------------------------------------------------===//
-//
-// IRCanonicalizer - Transforms LLVM Modules into canonical form.
-//
-Pass *createIRCanonicalizerPass();
-
 //===----------------------------------------------------------------------===//
 //
 // LowerSwitch - This pass converts SwitchInst instructions into a sequence of

llvm/lib/Transforms/Utils/CMakeLists.txt

@@ -32,7 +32,6 @@ add_llvm_component_library(LLVMTransformUtils
   InjectTLIMappings.cpp
   InstructionNamer.cpp
   IntegerDivision.cpp
-  IRCanonicalizer.cpp
   LCSSA.cpp
   LibCallsShrinkWrap.cpp
   Local.cpp