[llvm] r221619 - [NVPTX] Add an NVPTX-specific TargetTransformInfo
Jingyue Wu
jingyue at google.com
Mon Nov 10 10:38:26 PST 2014
Author: jingyue
Date: Mon Nov 10 12:38:25 2014
New Revision: 221619
URL: http://llvm.org/viewvc/llvm-project?rev=221619&view=rev
Log:
[NVPTX] Add an NVPTX-specific TargetTransformInfo
Summary:
It currently only implements hasBranchDivergence, and will be extended
in later diffs.
Split from D6188.
Test Plan: make check-all
Reviewers: jholewinski
Reviewed By: jholewinski
Subscribers: llvm-commits, meheff, eliben, jholewinski
Differential Revision: http://reviews.llvm.org/D6195
Added:
llvm/trunk/lib/Target/NVPTX/NVPTXTargetTransformInfo.cpp
Modified:
llvm/trunk/lib/Target/NVPTX/CMakeLists.txt
llvm/trunk/lib/Target/NVPTX/NVPTX.h
llvm/trunk/lib/Target/NVPTX/NVPTXTargetMachine.cpp
llvm/trunk/lib/Target/NVPTX/NVPTXTargetMachine.h
Modified: llvm/trunk/lib/Target/NVPTX/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/NVPTX/CMakeLists.txt?rev=221619&r1=221618&r2=221619&view=diff
==============================================================================
--- llvm/trunk/lib/Target/NVPTX/CMakeLists.txt (original)
+++ llvm/trunk/lib/Target/NVPTX/CMakeLists.txt Mon Nov 10 12:38:25 2014
@@ -9,27 +9,28 @@ tablegen(LLVM NVPTXGenSubtargetInfo.inc
add_public_tablegen_target(NVPTXCommonTableGen)
set(NVPTXCodeGen_sources
+ NVPTXAllocaHoisting.cpp
+ NVPTXAsmPrinter.cpp
+ NVPTXAssignValidGlobalNames.cpp
NVPTXFavorNonGenericAddrSpaces.cpp
NVPTXFrameLowering.cpp
- NVPTXInstrInfo.cpp
+ NVPTXGenericToNVVM.cpp
NVPTXISelDAGToDAG.cpp
NVPTXISelLowering.cpp
+ NVPTXImageOptimizer.cpp
+ NVPTXInstrInfo.cpp
+ NVPTXLowerAggrCopies.cpp
+ NVPTXLowerStructArgs.cpp
+ NVPTXMCExpr.cpp
+ NVPTXPrologEpilogPass.cpp
NVPTXRegisterInfo.cpp
+ NVPTXReplaceImageHandles.cpp
NVPTXSubtarget.cpp
NVPTXTargetMachine.cpp
- NVPTXLowerAggrCopies.cpp
- NVPTXutil.cpp
- NVPTXAllocaHoisting.cpp
- NVPTXAsmPrinter.cpp
+ NVPTXTargetTransformInfo.cpp
NVPTXUtilities.cpp
+ NVPTXutil.cpp
NVVMReflect.cpp
- NVPTXGenericToNVVM.cpp
- NVPTXAssignValidGlobalNames.cpp
- NVPTXPrologEpilogPass.cpp
- NVPTXMCExpr.cpp
- NVPTXReplaceImageHandles.cpp
- NVPTXImageOptimizer.cpp
- NVPTXLowerStructArgs.cpp
)
add_llvm_target(NVPTXCodeGen ${NVPTXCodeGen_sources})
Modified: llvm/trunk/lib/Target/NVPTX/NVPTX.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/NVPTX/NVPTX.h?rev=221619&r1=221618&r2=221619&view=diff
==============================================================================
--- llvm/trunk/lib/Target/NVPTX/NVPTX.h (original)
+++ llvm/trunk/lib/Target/NVPTX/NVPTX.h Mon Nov 10 12:38:25 2014
@@ -59,6 +59,7 @@ inline static const char *NVPTXCondCodeT
llvm_unreachable("Unknown condition code");
}
+ImmutablePass *createNVPTXTargetTransformInfoPass(const NVPTXTargetMachine *TM);
FunctionPass *
createNVPTXISelDag(NVPTXTargetMachine &TM, llvm::CodeGenOpt::Level OptLevel);
ModulePass *createNVPTXAssignValidGlobalNamesPass();
Modified: llvm/trunk/lib/Target/NVPTX/NVPTXTargetMachine.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/NVPTX/NVPTXTargetMachine.cpp?rev=221619&r1=221618&r2=221619&view=diff
==============================================================================
--- llvm/trunk/lib/Target/NVPTX/NVPTXTargetMachine.cpp (original)
+++ llvm/trunk/lib/Target/NVPTX/NVPTXTargetMachine.cpp Mon Nov 10 12:38:25 2014
@@ -121,6 +121,14 @@ TargetPassConfig *NVPTXTargetMachine::cr
return PassConfig;
}
+void NVPTXTargetMachine::addAnalysisPasses(PassManagerBase &PM) {
+ // Add first the target-independent BasicTTI pass, then our NVPTX pass. This
+ // allows the NVPTX pass to delegate to the target independent layer when
+ // appropriate.
+ PM.add(createBasicTargetTransformInfoPass(this));
+ PM.add(createNVPTXTargetTransformInfoPass(this));
+}
+
void NVPTXPassConfig::addIRPasses() {
// The following passes are known to not play well with virtual regs hanging
// around after register allocation (which in our case, is *all* registers).
Modified: llvm/trunk/lib/Target/NVPTX/NVPTXTargetMachine.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/NVPTX/NVPTXTargetMachine.h?rev=221619&r1=221618&r2=221619&view=diff
==============================================================================
--- llvm/trunk/lib/Target/NVPTX/NVPTXTargetMachine.h (original)
+++ llvm/trunk/lib/Target/NVPTX/NVPTXTargetMachine.h Mon Nov 10 12:38:25 2014
@@ -49,6 +49,9 @@ public:
return true;
}
+ /// \brief Register NVPTX analysis passes with a pass manager.
+ void addAnalysisPasses(PassManagerBase &PM) override;
+
}; // NVPTXTargetMachine.
class NVPTXTargetMachine32 : public NVPTXTargetMachine {
Added: llvm/trunk/lib/Target/NVPTX/NVPTXTargetTransformInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/NVPTX/NVPTXTargetTransformInfo.cpp?rev=221619&view=auto
==============================================================================
--- llvm/trunk/lib/Target/NVPTX/NVPTXTargetTransformInfo.cpp (added)
+++ llvm/trunk/lib/Target/NVPTX/NVPTXTargetTransformInfo.cpp Mon Nov 10 12:38:25 2014
@@ -0,0 +1,90 @@
+//===-- NVPTXTargetTransformInfo.cpp - NVPTX specific TTI pass ---------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// \file
+// This file implements a TargetTransformInfo analysis pass specific to the
+// NVPTX target machine. It uses the target's detailed information to provide
+// more precise answers to certain TTI queries, while letting the target
+// independent and default TTI implementations handle the rest.
+//
+//===----------------------------------------------------------------------===//
+
+#include "NVPTXTargetMachine.h"
+#include "llvm/Analysis/LoopInfo.h"
+#include "llvm/Analysis/TargetTransformInfo.h"
+#include "llvm/Analysis/ValueTracking.h"
+#include "llvm/Support/Debug.h"
+#include "llvm/Target/CostTable.h"
+#include "llvm/Target/TargetLowering.h"
+using namespace llvm;
+
+#define DEBUG_TYPE "NVPTXtti"
+
+// Declare the pass initialization routine locally as target-specific passes
+// don't have a target-wide initialization entry point, and so we rely on the
+// pass constructor initialization.
+namespace llvm {
+void initializeNVPTXTTIPass(PassRegistry &);
+}
+
+namespace {
+
+class NVPTXTTI final : public ImmutablePass, public TargetTransformInfo {
+ const NVPTXTargetMachine *TM;
+ const NVPTXSubtarget *ST;
+ const NVPTXTargetLowering *TLI;
+
+ /// Estimate the overhead of scalarizing an instruction. Insert and Extract
+ /// are set if the result needs to be inserted and/or extracted from vectors.
+ unsigned getScalarizationOverhead(Type *Ty, bool Insert, bool Extract) const;
+
+public:
+ NVPTXTTI() : ImmutablePass(ID), TM(nullptr), ST(nullptr), TLI(nullptr) {
+ llvm_unreachable("This pass cannot be directly constructed");
+ }
+
+ NVPTXTTI(const NVPTXTargetMachine *TM)
+ : ImmutablePass(ID), TM(TM), ST(TM->getSubtargetImpl()),
+ TLI(TM->getSubtargetImpl()->getTargetLowering()) {
+ initializeNVPTXTTIPass(*PassRegistry::getPassRegistry());
+ }
+
+ void initializePass() override { pushTTIStack(this); }
+
+ void getAnalysisUsage(AnalysisUsage &AU) const override {
+ TargetTransformInfo::getAnalysisUsage(AU);
+ }
+
+ /// Pass identification.
+ static char ID;
+
+ /// Provide necessary pointer adjustments for the two base classes.
+ void *getAdjustedAnalysisPointer(const void *ID) override {
+ if (ID == &TargetTransformInfo::ID)
+ return (TargetTransformInfo *)this;
+ return this;
+ }
+
+ bool hasBranchDivergence() const override;
+
+ /// @}
+};
+
+} // end anonymous namespace
+
+INITIALIZE_AG_PASS(NVPTXTTI, TargetTransformInfo, "NVPTXtti",
+ "NVPTX Target Transform Info", true, true, false)
+char NVPTXTTI::ID = 0;
+
+ImmutablePass *
+llvm::createNVPTXTargetTransformInfoPass(const NVPTXTargetMachine *TM) {
+ return new NVPTXTTI(TM);
+}
+
+bool NVPTXTTI::hasBranchDivergence() const { return true; }
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