From 25540a7f39846c4c11a9fd578b9d3686c568847c Mon Sep 17 00:00:00 2001 From: Eli Bendersky Date: Thu, 3 Apr 2014 21:18:25 +0000 Subject: Optimize away unnecessary address casts. Removes unnecessary casts from non-generic address spaces to the generic address space for certain code patterns. Patch by Jingyue Wu. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205571 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/NVPTX/NVPTXTargetMachine.cpp | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'lib/Target/NVPTX/NVPTXTargetMachine.cpp') diff --git a/lib/Target/NVPTX/NVPTXTargetMachine.cpp b/lib/Target/NVPTX/NVPTXTargetMachine.cpp index 7d7d79314c..9aa7dbb4fa 100644 --- a/lib/Target/NVPTX/NVPTXTargetMachine.cpp +++ b/lib/Target/NVPTX/NVPTXTargetMachine.cpp @@ -50,6 +50,7 @@ namespace llvm { void initializeNVVMReflectPass(PassRegistry&); void initializeGenericToNVVMPass(PassRegistry&); void initializeNVPTXAssignValidGlobalNamesPass(PassRegistry&); +void initializeNVPTXFavorNonGenericAddrSpacesPass(PassRegistry &); } extern "C" void LLVMInitializeNVPTXTarget() { @@ -62,6 +63,8 @@ extern "C" void LLVMInitializeNVPTXTarget() { initializeNVVMReflectPass(*PassRegistry::getPassRegistry()); initializeGenericToNVVMPass(*PassRegistry::getPassRegistry()); initializeNVPTXAssignValidGlobalNamesPass(*PassRegistry::getPassRegistry()); + initializeNVPTXFavorNonGenericAddrSpacesPass( + *PassRegistry::getPassRegistry()); } static std::string computeDataLayout(const NVPTXSubtarget &ST) { @@ -143,6 +146,12 @@ void NVPTXPassConfig::addIRPasses() { TargetPassConfig::addIRPasses(); addPass(createNVPTXAssignValidGlobalNamesPass()); addPass(createGenericToNVVMPass()); + addPass(createNVPTXFavorNonGenericAddrSpacesPass()); + // The FavorNonGenericAddrSpaces pass may remove instructions and leave some + // values unused. Therefore, we run a DCE pass right afterwards. We could + // remove unused values in an ad-hoc manner, but it requires manual work and + // might be error-prone. + addPass(createDeadCodeEliminationPass()); } bool NVPTXPassConfig::addInstSelector() { -- cgit v1.2.3