[llvm-commits] [llvm] r138841 - in /llvm/trunk: docs/ include/llvm/ include/llvm/Transforms/ lib/Transforms/Scalar/ test/Transforms/LoopDeletion/ test/Transforms/LoopSimplify/ test/Transforms/TailDup/ test/Transforms/TailDup/X86/
Rafael Espindola
rafael.espindola at gmail.com
Tue Aug 30 16:03:45 PDT 2011
Author: rafael
Date: Tue Aug 30 18:03:45 2011
New Revision: 138841
URL: http://llvm.org/viewvc/llvm-project?rev=138841&view=rev
Log:
Remove the old tail duplication pass. It is not used and is unable to update
ssa, so it has to be run really early in the pipeline. Any replacement
should probably use the SSAUpdater.
Removed:
llvm/trunk/lib/Transforms/Scalar/TailDuplication.cpp
llvm/trunk/test/Transforms/TailDup/2003-06-24-Simpleloop.ll
llvm/trunk/test/Transforms/TailDup/2003-07-22-InfiniteLoop.ll
llvm/trunk/test/Transforms/TailDup/2003-08-23-InvalidatedPointers.ll
llvm/trunk/test/Transforms/TailDup/2003-08-31-UnreachableBlocks.ll
llvm/trunk/test/Transforms/TailDup/2004-04-01-DemoteRegToStack.ll
llvm/trunk/test/Transforms/TailDup/2008-05-13-InfiniteLoop.ll
llvm/trunk/test/Transforms/TailDup/2009-07-31-phicrash.ll
llvm/trunk/test/Transforms/TailDup/MergeTest.ll
llvm/trunk/test/Transforms/TailDup/PHIUpdateTest.ll
llvm/trunk/test/Transforms/TailDup/X86/if-tail-dup.ll
llvm/trunk/test/Transforms/TailDup/basictest.ll
llvm/trunk/test/Transforms/TailDup/basictest2.ll
Modified:
llvm/trunk/docs/ReleaseNotes.html
llvm/trunk/include/llvm/InitializePasses.h
llvm/trunk/include/llvm/LinkAllPasses.h
llvm/trunk/include/llvm/Transforms/Scalar.h
llvm/trunk/lib/Transforms/Scalar/CMakeLists.txt
llvm/trunk/lib/Transforms/Scalar/Scalar.cpp
llvm/trunk/test/Transforms/LoopDeletion/2008-05-06-Phi.ll
llvm/trunk/test/Transforms/LoopSimplify/2003-08-15-PreheadersFail.ll
Modified: llvm/trunk/docs/ReleaseNotes.html
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/docs/ReleaseNotes.html?rev=138841&r1=138840&r2=138841&view=diff
==============================================================================
--- llvm/trunk/docs/ReleaseNotes.html (original)
+++ llvm/trunk/docs/ReleaseNotes.html Tue Aug 30 18:03:45 2011
@@ -583,6 +583,8 @@
<ul>
<li>The <code>LowerSetJmp</code> pass wasn't used effectively by any
target and has been removed.</li>
+ <li>The old <code>TailDup</code> pass was not used in the standard pipeline
+ and was unable to update ssa form, so it has been removed.
<li>The syntax of volatile loads and stores in IR has been changed to
"<code>load volatile</code>"/"<code>store volatile</code>". The old
syntax ("<code>volatile load</code>"/"<code>volatile store</code>")
Modified: llvm/trunk/include/llvm/InitializePasses.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/InitializePasses.h?rev=138841&r1=138840&r2=138841&view=diff
==============================================================================
--- llvm/trunk/include/llvm/InitializePasses.h (original)
+++ llvm/trunk/include/llvm/InitializePasses.h Tue Aug 30 18:03:45 2011
@@ -219,7 +219,6 @@
void initializeStripSymbolsPass(PassRegistry&);
void initializeStrongPHIEliminationPass(PassRegistry&);
void initializeTailCallElimPass(PassRegistry&);
-void initializeTailDupPass(PassRegistry&);
void initializeTargetDataPass(PassRegistry&);
void initializeTargetLibraryInfoPass(PassRegistry&);
void initializeTwoAddressInstructionPassPass(PassRegistry&);
Modified: llvm/trunk/include/llvm/LinkAllPasses.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/LinkAllPasses.h?rev=138841&r1=138840&r2=138841&view=diff
==============================================================================
--- llvm/trunk/include/llvm/LinkAllPasses.h (original)
+++ llvm/trunk/include/llvm/LinkAllPasses.h Tue Aug 30 18:03:45 2011
@@ -127,7 +127,6 @@
(void) llvm::createStripDeadDebugInfoPass();
(void) llvm::createStripDeadPrototypesPass();
(void) llvm::createTailCallEliminationPass();
- (void) llvm::createTailDuplicationPass();
(void) llvm::createJumpThreadingPass();
(void) llvm::createUnifyFunctionExitNodesPass();
(void) llvm::createInstCountPass();
Modified: llvm/trunk/include/llvm/Transforms/Scalar.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Transforms/Scalar.h?rev=138841&r1=138840&r2=138841&view=diff
==============================================================================
--- llvm/trunk/include/llvm/Transforms/Scalar.h (original)
+++ llvm/trunk/include/llvm/Transforms/Scalar.h Tue Aug 30 18:03:45 2011
@@ -176,13 +176,6 @@
//===----------------------------------------------------------------------===//
//
-// TailDuplication - Eliminate unconditional branches through controlled code
-// duplication, creating simpler CFG structures.
-//
-FunctionPass *createTailDuplicationPass();
-
-//===----------------------------------------------------------------------===//
-//
// JumpThreading - Thread control through mult-pred/multi-succ blocks where some
// preds always go to some succ.
//
Modified: llvm/trunk/lib/Transforms/Scalar/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/CMakeLists.txt?rev=138841&r1=138840&r2=138841&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/CMakeLists.txt (original)
+++ llvm/trunk/lib/Transforms/Scalar/CMakeLists.txt Tue Aug 30 18:03:45 2011
@@ -29,7 +29,6 @@
SimplifyCFGPass.cpp
SimplifyLibCalls.cpp
Sink.cpp
- TailDuplication.cpp
TailRecursionElimination.cpp
)
Modified: llvm/trunk/lib/Transforms/Scalar/Scalar.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/Scalar.cpp?rev=138841&r1=138840&r2=138841&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/Scalar.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/Scalar.cpp Tue Aug 30 18:03:45 2011
@@ -63,7 +63,6 @@
initializeCFGSimplifyPassPass(Registry);
initializeSimplifyLibCallsPass(Registry);
initializeSinkingPass(Registry);
- initializeTailDupPass(Registry);
initializeTailCallElimPass(Registry);
}
Removed: llvm/trunk/lib/Transforms/Scalar/TailDuplication.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/TailDuplication.cpp?rev=138840&view=auto
==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/TailDuplication.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/TailDuplication.cpp (removed)
@@ -1,373 +0,0 @@
-//===- TailDuplication.cpp - Simplify CFG through tail duplication --------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-//
-// This pass performs a limited form of tail duplication, intended to simplify
-// CFGs by removing some unconditional branches. This pass is necessary to
-// straighten out loops created by the C front-end, but also is capable of
-// making other code nicer. After this pass is run, the CFG simplify pass
-// should be run to clean up the mess.
-//
-// This pass could be enhanced in the future to use profile information to be
-// more aggressive.
-//
-//===----------------------------------------------------------------------===//
-
-#define DEBUG_TYPE "tailduplicate"
-#include "llvm/Transforms/Scalar.h"
-#include "llvm/Constant.h"
-#include "llvm/Function.h"
-#include "llvm/Instructions.h"
-#include "llvm/IntrinsicInst.h"
-#include "llvm/Pass.h"
-#include "llvm/Type.h"
-#include "llvm/ADT/Statistic.h"
-#include "llvm/ADT/SmallPtrSet.h"
-#include "llvm/Analysis/InstructionSimplify.h"
-#include "llvm/Support/CFG.h"
-#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/Debug.h"
-#include "llvm/Support/raw_ostream.h"
-#include "llvm/Transforms/Utils/Local.h"
-#include <map>
-using namespace llvm;
-
-STATISTIC(NumEliminated, "Number of unconditional branches eliminated");
-
-static cl::opt<unsigned>
-TailDupThreshold("taildup-threshold",
- cl::desc("Max block size to tail duplicate"),
- cl::init(1), cl::Hidden);
-
-namespace {
- class TailDup : public FunctionPass {
- bool runOnFunction(Function &F);
- public:
- static char ID; // Pass identification, replacement for typeid
- TailDup() : FunctionPass(ID) {
- initializeTailDupPass(*PassRegistry::getPassRegistry());
- }
-
- private:
- inline bool shouldEliminateUnconditionalBranch(TerminatorInst *, unsigned);
- inline void eliminateUnconditionalBranch(BranchInst *BI);
- SmallPtrSet<BasicBlock*, 4> CycleDetector;
- };
-}
-
-char TailDup::ID = 0;
-INITIALIZE_PASS(TailDup, "tailduplicate", "Tail Duplication", false, false)
-
-// Public interface to the Tail Duplication pass
-FunctionPass *llvm::createTailDuplicationPass() { return new TailDup(); }
-
-/// runOnFunction - Top level algorithm - Loop over each unconditional branch in
-/// the function, eliminating it if it looks attractive enough. CycleDetector
-/// prevents infinite loops by checking that we aren't redirecting a branch to
-/// a place it already pointed to earlier; see PR 2323.
-bool TailDup::runOnFunction(Function &F) {
- bool Changed = false;
- CycleDetector.clear();
- for (Function::iterator I = F.begin(), E = F.end(); I != E; ) {
- if (shouldEliminateUnconditionalBranch(I->getTerminator(),
- TailDupThreshold)) {
- eliminateUnconditionalBranch(cast<BranchInst>(I->getTerminator()));
- Changed = true;
- } else {
- ++I;
- CycleDetector.clear();
- }
- }
- return Changed;
-}
-
-/// shouldEliminateUnconditionalBranch - Return true if this branch looks
-/// attractive to eliminate. We eliminate the branch if the destination basic
-/// block has <= 5 instructions in it, not counting PHI nodes. In practice,
-/// since one of these is a terminator instruction, this means that we will add
-/// up to 4 instructions to the new block.
-///
-/// We don't count PHI nodes in the count since they will be removed when the
-/// contents of the block are copied over.
-///
-bool TailDup::shouldEliminateUnconditionalBranch(TerminatorInst *TI,
- unsigned Threshold) {
- BranchInst *BI = dyn_cast<BranchInst>(TI);
- if (!BI || !BI->isUnconditional()) return false; // Not an uncond branch!
-
- BasicBlock *Dest = BI->getSuccessor(0);
- if (Dest == BI->getParent()) return false; // Do not loop infinitely!
-
- // Do not inline a block if we will just get another branch to the same block!
- TerminatorInst *DTI = Dest->getTerminator();
- if (BranchInst *DBI = dyn_cast<BranchInst>(DTI))
- if (DBI->isUnconditional() && DBI->getSuccessor(0) == Dest)
- return false; // Do not loop infinitely!
-
- // FIXME: DemoteRegToStack cannot yet demote invoke instructions to the stack,
- // because doing so would require breaking critical edges. This should be
- // fixed eventually.
- if (!DTI->use_empty())
- return false;
-
- // Do not bother with blocks with only a single predecessor: simplify
- // CFG will fold these two blocks together!
- pred_iterator PI = pred_begin(Dest), PE = pred_end(Dest);
- ++PI;
- if (PI == PE) return false; // Exactly one predecessor!
-
- BasicBlock::iterator I = Dest->getFirstNonPHI();
-
- for (unsigned Size = 0; I != Dest->end(); ++I) {
- if (Size == Threshold) return false; // The block is too large.
-
- // Don't tail duplicate call instructions. They are very large compared to
- // other instructions.
- if (isa<CallInst>(I) || isa<InvokeInst>(I)) return false;
-
- // Also alloca and malloc.
- if (isa<AllocaInst>(I)) return false;
-
- // Some vector instructions can expand into a number of instructions.
- if (isa<ShuffleVectorInst>(I) || isa<ExtractElementInst>(I) ||
- isa<InsertElementInst>(I)) return false;
-
- // Only count instructions that are not debugger intrinsics.
- if (!isa<DbgInfoIntrinsic>(I)) ++Size;
- }
-
- // Do not tail duplicate a block that has thousands of successors into a block
- // with a single successor if the block has many other predecessors. This can
- // cause an N^2 explosion in CFG edges (and PHI node entries), as seen in
- // cases that have a large number of indirect gotos.
- unsigned NumSuccs = DTI->getNumSuccessors();
- if (NumSuccs > 8) {
- unsigned TooMany = 128;
- if (NumSuccs >= TooMany) return false;
- TooMany = TooMany/NumSuccs;
- for (; PI != PE; ++PI)
- if (TooMany-- == 0) return false;
- }
-
- // If this unconditional branch is a fall-through, be careful about
- // tail duplicating it. In particular, we don't want to taildup it if the
- // original block will still be there after taildup is completed: doing so
- // would eliminate the fall-through, requiring unconditional branches.
- Function::iterator DestI = Dest;
- if (&*--DestI == BI->getParent()) {
- // The uncond branch is a fall-through. Tail duplication of the block is
- // will eliminate the fall-through-ness and end up cloning the terminator
- // at the end of the Dest block. Since the original Dest block will
- // continue to exist, this means that one or the other will not be able to
- // fall through. One typical example that this helps with is code like:
- // if (a)
- // foo();
- // if (b)
- // foo();
- // Cloning the 'if b' block into the end of the first foo block is messy.
-
- // The messy case is when the fall-through block falls through to other
- // blocks. This is what we would be preventing if we cloned the block.
- DestI = Dest;
- if (++DestI != Dest->getParent()->end()) {
- BasicBlock *DestSucc = DestI;
- // If any of Dest's successors are fall-throughs, don't do this xform.
- for (succ_iterator SI = succ_begin(Dest), SE = succ_end(Dest);
- SI != SE; ++SI)
- if (*SI == DestSucc)
- return false;
- }
- }
-
- // Finally, check that we haven't redirected to this target block earlier;
- // there are cases where we loop forever if we don't check this (PR 2323).
- if (!CycleDetector.insert(Dest))
- return false;
-
- return true;
-}
-
-/// FindObviousSharedDomOf - We know there is a branch from SrcBlock to
-/// DestBlock, and that SrcBlock is not the only predecessor of DstBlock. If we
-/// can find a predecessor of SrcBlock that is a dominator of both SrcBlock and
-/// DstBlock, return it.
-static BasicBlock *FindObviousSharedDomOf(BasicBlock *SrcBlock,
- BasicBlock *DstBlock) {
- // SrcBlock must have a single predecessor.
- pred_iterator PI = pred_begin(SrcBlock), PE = pred_end(SrcBlock);
- if (PI == PE || ++PI != PE) return 0;
-
- BasicBlock *SrcPred = *pred_begin(SrcBlock);
-
- // Look at the predecessors of DstBlock. One of them will be SrcBlock. If
- // there is only one other pred, get it, otherwise we can't handle it.
- PI = pred_begin(DstBlock); PE = pred_end(DstBlock);
- BasicBlock *DstOtherPred = 0;
- BasicBlock *P = *PI;
- if (P == SrcBlock) {
- if (++PI == PE) return 0;
- DstOtherPred = *PI;
- if (++PI != PE) return 0;
- } else {
- DstOtherPred = P;
- if (++PI == PE || *PI != SrcBlock || ++PI != PE) return 0;
- }
-
- // We can handle two situations here: "if then" and "if then else" blocks. An
- // 'if then' situation is just where DstOtherPred == SrcPred.
- if (DstOtherPred == SrcPred)
- return SrcPred;
-
- // Check to see if we have an "if then else" situation, which means that
- // DstOtherPred will have a single predecessor and it will be SrcPred.
- PI = pred_begin(DstOtherPred); PE = pred_end(DstOtherPred);
- if (PI != PE && *PI == SrcPred) {
- if (++PI != PE) return 0; // Not a single pred.
- return SrcPred; // Otherwise, it's an "if then" situation. Return the if.
- }
-
- // Otherwise, this is something we can't handle.
- return 0;
-}
-
-
-/// eliminateUnconditionalBranch - Clone the instructions from the destination
-/// block into the source block, eliminating the specified unconditional branch.
-/// If the destination block defines values used by successors of the dest
-/// block, we may need to insert PHI nodes.
-///
-void TailDup::eliminateUnconditionalBranch(BranchInst *Branch) {
- BasicBlock *SourceBlock = Branch->getParent();
- BasicBlock *DestBlock = Branch->getSuccessor(0);
- assert(SourceBlock != DestBlock && "Our predicate is broken!");
-
- DEBUG(dbgs() << "TailDuplication[" << SourceBlock->getParent()->getName()
- << "]: Eliminating branch: " << *Branch);
-
- // See if we can avoid duplicating code by moving it up to a dominator of both
- // blocks.
- if (BasicBlock *DomBlock = FindObviousSharedDomOf(SourceBlock, DestBlock)) {
- DEBUG(dbgs() << "Found shared dominator: " << DomBlock->getName() << "\n");
-
- // If there are non-phi instructions in DestBlock that have no operands
- // defined in DestBlock, and if the instruction has no side effects, we can
- // move the instruction to DomBlock instead of duplicating it.
- BasicBlock::iterator BBI = DestBlock->getFirstNonPHI();
- while (!isa<TerminatorInst>(BBI)) {
- Instruction *I = BBI++;
-
- bool CanHoist = I->isSafeToSpeculativelyExecute() &&
- !I->mayReadFromMemory();
- if (CanHoist) {
- for (unsigned op = 0, e = I->getNumOperands(); op != e; ++op)
- if (Instruction *OpI = dyn_cast<Instruction>(I->getOperand(op)))
- if (OpI->getParent() == DestBlock ||
- (isa<InvokeInst>(OpI) && OpI->getParent() == DomBlock)) {
- CanHoist = false;
- break;
- }
- if (CanHoist) {
- // Remove from DestBlock, move right before the term in DomBlock.
- DestBlock->getInstList().remove(I);
- DomBlock->getInstList().insert(DomBlock->getTerminator(), I);
- DEBUG(dbgs() << "Hoisted: " << *I);
- }
- }
- }
- }
-
- // Tail duplication can not update SSA properties correctly if the values
- // defined in the duplicated tail are used outside of the tail itself. For
- // this reason, we spill all values that are used outside of the tail to the
- // stack.
- for (BasicBlock::iterator I = DestBlock->begin(); I != DestBlock->end(); ++I)
- if (I->isUsedOutsideOfBlock(DestBlock)) {
- // We found a use outside of the tail. Create a new stack slot to
- // break this inter-block usage pattern.
- DemoteRegToStack(*I);
- }
-
- // We are going to have to map operands from the original block B to the new
- // copy of the block B'. If there are PHI nodes in the DestBlock, these PHI
- // nodes also define part of this mapping. Loop over these PHI nodes, adding
- // them to our mapping.
- //
- std::map<Value*, Value*> ValueMapping;
-
- BasicBlock::iterator BI = DestBlock->begin();
- bool HadPHINodes = isa<PHINode>(BI);
- for (; PHINode *PN = dyn_cast<PHINode>(BI); ++BI)
- ValueMapping[PN] = PN->getIncomingValueForBlock(SourceBlock);
-
- // Clone the non-phi instructions of the dest block into the source block,
- // keeping track of the mapping...
- //
- for (; BI != DestBlock->end(); ++BI) {
- Instruction *New = BI->clone();
- New->setName(BI->getName());
- SourceBlock->getInstList().push_back(New);
- ValueMapping[BI] = New;
- }
-
- // Now that we have built the mapping information and cloned all of the
- // instructions (giving us a new terminator, among other things), walk the new
- // instructions, rewriting references of old instructions to use new
- // instructions.
- //
- BI = Branch; ++BI; // Get an iterator to the first new instruction
- for (; BI != SourceBlock->end(); ++BI)
- for (unsigned i = 0, e = BI->getNumOperands(); i != e; ++i) {
- std::map<Value*, Value*>::const_iterator I =
- ValueMapping.find(BI->getOperand(i));
- if (I != ValueMapping.end())
- BI->setOperand(i, I->second);
- }
-
- // Next we check to see if any of the successors of DestBlock had PHI nodes.
- // If so, we need to add entries to the PHI nodes for SourceBlock now.
- for (succ_iterator SI = succ_begin(DestBlock), SE = succ_end(DestBlock);
- SI != SE; ++SI) {
- BasicBlock *Succ = *SI;
- for (BasicBlock::iterator PNI = Succ->begin(); isa<PHINode>(PNI); ++PNI) {
- PHINode *PN = cast<PHINode>(PNI);
- // Ok, we have a PHI node. Figure out what the incoming value was for the
- // DestBlock.
- Value *IV = PN->getIncomingValueForBlock(DestBlock);
-
- // Remap the value if necessary...
- std::map<Value*, Value*>::const_iterator I = ValueMapping.find(IV);
- if (I != ValueMapping.end())
- IV = I->second;
- PN->addIncoming(IV, SourceBlock);
- }
- }
-
- // Next, remove the old branch instruction, and any PHI node entries that we
- // had.
- BI = Branch; ++BI; // Get an iterator to the first new instruction
- DestBlock->removePredecessor(SourceBlock); // Remove entries in PHI nodes...
- SourceBlock->getInstList().erase(Branch); // Destroy the uncond branch...
-
- // Final step: now that we have finished everything up, walk the cloned
- // instructions one last time, constant propagating and DCE'ing them, because
- // they may not be needed anymore.
- //
- if (HadPHINodes) {
- while (BI != SourceBlock->end()) {
- Instruction *Inst = BI++;
- if (isInstructionTriviallyDead(Inst))
- Inst->eraseFromParent();
- else if (Value *V = SimplifyInstruction(Inst)) {
- Inst->replaceAllUsesWith(V);
- Inst->eraseFromParent();
- }
- }
- }
-
- ++NumEliminated; // We just killed a branch!
-}
Modified: llvm/trunk/test/Transforms/LoopDeletion/2008-05-06-Phi.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/LoopDeletion/2008-05-06-Phi.ll?rev=138841&r1=138840&r2=138841&view=diff
==============================================================================
--- llvm/trunk/test/Transforms/LoopDeletion/2008-05-06-Phi.ll (original)
+++ llvm/trunk/test/Transforms/LoopDeletion/2008-05-06-Phi.ll Tue Aug 30 18:03:45 2011
@@ -1,4 +1,4 @@
-; RUN: opt < %s -inline -tailduplicate -instcombine -jump-threading -licm -loop-unswitch -instcombine -indvars -loop-deletion -gvn -simplifycfg -verify -disable-output
+; RUN: opt < %s -inline -instcombine -jump-threading -licm -loop-unswitch -instcombine -indvars -loop-deletion -gvn -simplifycfg -verify -disable-output
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
target triple = "i386-apple-darwin9"
Modified: llvm/trunk/test/Transforms/LoopSimplify/2003-08-15-PreheadersFail.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/LoopSimplify/2003-08-15-PreheadersFail.ll?rev=138841&r1=138840&r2=138841&view=diff
==============================================================================
--- llvm/trunk/test/Transforms/LoopSimplify/2003-08-15-PreheadersFail.ll (original)
+++ llvm/trunk/test/Transforms/LoopSimplify/2003-08-15-PreheadersFail.ll Tue Aug 30 18:03:45 2011
@@ -1,4 +1,4 @@
-; RUN: opt < %s -tailduplicate -instcombine -simplifycfg -licm -disable-output
+; RUN: opt < %s -instcombine -simplifycfg -licm -disable-output
target datalayout = "e-p:32:32"
@yy_base = external global [787 x i16] ; <[787 x i16]*> [#uses=1]
@yy_state_ptr = external global i32* ; <i32**> [#uses=3]
Removed: llvm/trunk/test/Transforms/TailDup/2003-06-24-Simpleloop.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/TailDup/2003-06-24-Simpleloop.ll?rev=138840&view=auto
==============================================================================
--- llvm/trunk/test/Transforms/TailDup/2003-06-24-Simpleloop.ll (original)
+++ llvm/trunk/test/Transforms/TailDup/2003-06-24-Simpleloop.ll (removed)
@@ -1,15 +0,0 @@
-; RUN: opt < %s -tailduplicate -disable-output
-
-define void @motion_result7() {
-entry:
- br label %endif
-endif: ; preds = %no_exit, %entry
- %i.1 = phi i32 [ %inc, %no_exit ], [ 0, %entry ] ; <i32> [#uses=1]
- %inc = add i32 %i.1, 1 ; <i32> [#uses=1]
- br i1 false, label %no_exit, label %UnifiedExitNode
-no_exit: ; preds = %endif
- br i1 false, label %UnifiedExitNode, label %endif
-UnifiedExitNode: ; preds = %no_exit, %endif
- ret void
-}
-
Removed: llvm/trunk/test/Transforms/TailDup/2003-07-22-InfiniteLoop.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/TailDup/2003-07-22-InfiniteLoop.ll?rev=138840&view=auto
==============================================================================
--- llvm/trunk/test/Transforms/TailDup/2003-07-22-InfiniteLoop.ll (original)
+++ llvm/trunk/test/Transforms/TailDup/2003-07-22-InfiniteLoop.ll (removed)
@@ -1,11 +0,0 @@
-; RUN: opt < %s -tailduplicate -disable-output
-
-define i32 @sum() {
-entry:
- br label %loopentry
-loopentry: ; preds = %loopentry, %entry
- %i.0 = phi i32 [ 1, %entry ], [ %tmp.3, %loopentry ] ; <i32> [#uses=1]
- %tmp.3 = add i32 %i.0, 1 ; <i32> [#uses=1]
- br label %loopentry
-}
-
Removed: llvm/trunk/test/Transforms/TailDup/2003-08-23-InvalidatedPointers.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/TailDup/2003-08-23-InvalidatedPointers.ll?rev=138840&view=auto
==============================================================================
--- llvm/trunk/test/Transforms/TailDup/2003-08-23-InvalidatedPointers.ll (original)
+++ llvm/trunk/test/Transforms/TailDup/2003-08-23-InvalidatedPointers.ll (removed)
@@ -1,29 +0,0 @@
-; RUN: opt < %s -tailduplicate -disable-output
-
-define i32 @sell_haggle() {
-entry:
- br i1 false, label %then.5, label %UnifiedExitNode
-then.5: ; preds = %entry
- br i1 false, label %loopentry.1.preheader, label %else.1
-else.1: ; preds = %then.5
- br label %loopentry.1.preheader
-loopentry.1.preheader: ; preds = %else.1, %then.5
- %final_ask.0 = phi i32 [ 0, %else.1 ], [ 0, %then.5 ] ; <i32> [#uses=2]
- br label %loopentry.1
-loopentry.1: ; preds = %endif.17, %loopentry.1.preheader
- switch i32 0, label %UnifiedExitNode [
- i32 2, label %UnifiedExitNode
- i32 1, label %endif.16
- ]
-endif.16: ; preds = %loopentry.1
- br i1 false, label %then.17, label %UnifiedExitNode
-then.17: ; preds = %endif.16
- br i1 false, label %then.18, label %endif.17
-then.18: ; preds = %then.17
- br i1 false, label %endif.17, label %UnifiedExitNode
-endif.17: ; preds = %then.18, %then.17
- %cur_ask.3 = phi i32 [ %final_ask.0, %then.17 ], [ %final_ask.0, %then.18 ] ; <i32> [#uses=0]
- br i1 false, label %loopentry.1, label %UnifiedExitNode
-UnifiedExitNode: ; preds = %endif.17, %then.18, %endif.16, %loopentry.1, %loopentry.1, %entry
- ret i32 0
-}
Removed: llvm/trunk/test/Transforms/TailDup/2003-08-31-UnreachableBlocks.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/TailDup/2003-08-31-UnreachableBlocks.ll?rev=138840&view=auto
==============================================================================
--- llvm/trunk/test/Transforms/TailDup/2003-08-31-UnreachableBlocks.ll (original)
+++ llvm/trunk/test/Transforms/TailDup/2003-08-31-UnreachableBlocks.ll (removed)
@@ -1,17 +0,0 @@
-; RUN: opt < %s -tailduplicate -disable-output
-
-define i32 @foo() {
-entry:
- br label %return.i
-after_ret.i: ; No predecessors!
- br label %return.i
-return.i: ; preds = %after_ret.i, %entry
- %tmp.3 = ptrtoint i32* null to i32 ; <i32> [#uses=1]
- br label %return.i1
-after_ret.i1: ; No predecessors!
- br label %return.i1
-return.i1: ; preds = %after_ret.i1, %return.i
- %tmp.8 = sub i32 %tmp.3, 0 ; <i32> [#uses=0]
- ret i32 0
-}
-
Removed: llvm/trunk/test/Transforms/TailDup/2004-04-01-DemoteRegToStack.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/TailDup/2004-04-01-DemoteRegToStack.ll?rev=138840&view=auto
==============================================================================
--- llvm/trunk/test/Transforms/TailDup/2004-04-01-DemoteRegToStack.ll (original)
+++ llvm/trunk/test/Transforms/TailDup/2004-04-01-DemoteRegToStack.ll (removed)
@@ -1,20 +0,0 @@
-; RUN: opt < %s -tailduplicate -disable-output
-
-define void @interpret() {
-entry:
- br label %retry
-retry: ; preds = %endif.4, %entry
- %tmp.8 = call i32 @interp( ) ; <i32> [#uses=3]
- switch i32 0, label %endif.4 [
- i32 -25, label %return
- i32 -16, label %return
- ]
-endif.4: ; preds = %retry
- br i1 false, label %return, label %retry
-return: ; preds = %endif.4, %retry, %retry
- %result.0 = phi i32 [ %tmp.8, %retry ], [ %tmp.8, %retry ], [ %tmp.8, %endif.4 ] ; <i32> [#uses=0]
- ret void
-}
-
-declare i32 @interp()
-
Removed: llvm/trunk/test/Transforms/TailDup/2008-05-13-InfiniteLoop.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/TailDup/2008-05-13-InfiniteLoop.ll?rev=138840&view=auto
==============================================================================
--- llvm/trunk/test/Transforms/TailDup/2008-05-13-InfiniteLoop.ll (original)
+++ llvm/trunk/test/Transforms/TailDup/2008-05-13-InfiniteLoop.ll (removed)
@@ -1,26 +0,0 @@
-; RUN: opt < %s -tailduplicate | llc
-; PR2323
-
-define i32 @func_27(i32 %p_28) nounwind {
-entry:
- %tmp125 = trunc i32 %p_28 to i8 ; <i8> [#uses=1]
- %tmp5.i = icmp eq i8 %tmp125, 0 ; <i1> [#uses=1]
- br i1 %tmp5.i, label %bb8.i, label %bb.i
-
-bb.i: ; preds = %entry
- br label %bb39.i
-
-bb8.i: ; preds = %entry
- br label %bb11.i
-
-bb11.i: ; preds = %bb39.i, %bb8.i
- %tmp126 = trunc i32 %p_28 to i8 ; <i8> [#uses=1]
- br label %bb39.i
-
-bb39.i: ; preds = %bb11.i, %bb.i
- %tmp127 = trunc i32 %p_28 to i8 ; <i8> [#uses=1]
- br label %bb11.i
-
-func_29.exit: ; No predecessors!
- ret i32 undef
-}
Removed: llvm/trunk/test/Transforms/TailDup/2009-07-31-phicrash.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/TailDup/2009-07-31-phicrash.ll?rev=138840&view=auto
==============================================================================
--- llvm/trunk/test/Transforms/TailDup/2009-07-31-phicrash.ll (original)
+++ llvm/trunk/test/Transforms/TailDup/2009-07-31-phicrash.ll (removed)
@@ -1,14 +0,0 @@
-; RUN: opt < %s -tailduplicate -disable-output
-; PR4662
-
-define void @a() {
-BB:
- br label %BB6
-
-BB6:
- %tmp9 = phi i64 [ 0, %BB ], [ 5, %BB34 ]
- br label %BB34
-
-BB34:
- br label %BB6
-}
Removed: llvm/trunk/test/Transforms/TailDup/MergeTest.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/TailDup/MergeTest.ll?rev=138840&view=auto
==============================================================================
--- llvm/trunk/test/Transforms/TailDup/MergeTest.ll (original)
+++ llvm/trunk/test/Transforms/TailDup/MergeTest.ll (removed)
@@ -1,27 +0,0 @@
-; RUN: opt < %s -tailduplicate -taildup-threshold=2 -S | grep add | not grep uses=1
-
-define i32 @test1(i1 %C, i32 %A, i32* %P) {
-entry:
- br i1 %C, label %L1, label %L2
-L1: ; preds = %entry
- store i32 1, i32* %P
- br label %L2
-L2: ; preds = %L1, %entry
- %X = add i32 %A, 17 ; <i32> [#uses=1]
- ret i32 %X
-}
-
-define i32 @test2(i1 %C, i32 %A, i32* %P) {
-entry:
- br i1 %C, label %L1, label %L2
-L1: ; preds = %entry
- store i32 1, i32* %P
- br label %L3
-L2: ; preds = %entry
- store i32 7, i32* %P
- br label %L3
-L3: ; preds = %L2, %L1
- %X = add i32 %A, 17 ; <i32> [#uses=1]
- ret i32 %X
-}
-
Removed: llvm/trunk/test/Transforms/TailDup/PHIUpdateTest.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/TailDup/PHIUpdateTest.ll?rev=138840&view=auto
==============================================================================
--- llvm/trunk/test/Transforms/TailDup/PHIUpdateTest.ll (original)
+++ llvm/trunk/test/Transforms/TailDup/PHIUpdateTest.ll (removed)
@@ -1,16 +0,0 @@
-; This test checks to make sure phi nodes are updated properly
-;
-; RUN: opt < %s -tailduplicate -disable-output
-
-define i32 @test(i1 %c, i32 %X, i32 %Y) {
- br label %L
-L: ; preds = %F, %0
- %A = add i32 %X, %Y ; <i32> [#uses=1]
- br i1 %c, label %T, label %F
-F: ; preds = %L
- br i1 %c, label %L, label %T
-T: ; preds = %F, %L
- %V = phi i32 [ %A, %L ], [ 0, %F ] ; <i32> [#uses=1]
- ret i32 %V
-}
-
Removed: llvm/trunk/test/Transforms/TailDup/X86/if-tail-dup.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/TailDup/X86/if-tail-dup.ll?rev=138840&view=auto
==============================================================================
--- llvm/trunk/test/Transforms/TailDup/X86/if-tail-dup.ll (original)
+++ llvm/trunk/test/Transforms/TailDup/X86/if-tail-dup.ll (removed)
@@ -1,49 +0,0 @@
-; RUN: opt < %s -tailduplicate | \
-; RUN: llc -march=x86 -o %t
-; RUN: grep {\\\<je\\\>} %t
-; RUN: not grep jmp %t
-; END.
-; This should have no unconditional jumps in it. The C source is:
-
-;void foo(int c, int* P) {
-; if (c & 1) P[0] = 1;
-; if (c & 2) P[1] = 1;
-; if (c & 4) P[2] = 1;
-; if (c & 8) P[3] = 1;
-;}
-
-define void @foo(i32 %c, i32* %P) {
-entry:
- %tmp1 = and i32 %c, 1 ; <i32> [#uses=1]
- %tmp1.upgrd.1 = icmp eq i32 %tmp1, 0 ; <i1> [#uses=1]
- br i1 %tmp1.upgrd.1, label %cond_next, label %cond_true
-cond_true: ; preds = %entry
- store i32 1, i32* %P
- br label %cond_next
-cond_next: ; preds = %cond_true, %entry
- %tmp5 = and i32 %c, 2 ; <i32> [#uses=1]
- %tmp5.upgrd.2 = icmp eq i32 %tmp5, 0 ; <i1> [#uses=1]
- br i1 %tmp5.upgrd.2, label %cond_next10, label %cond_true6
-cond_true6: ; preds = %cond_next
- %tmp8 = getelementptr i32* %P, i32 1 ; <i32*> [#uses=1]
- store i32 1, i32* %tmp8
- br label %cond_next10
-cond_next10: ; preds = %cond_true6, %cond_next
- %tmp13 = and i32 %c, 4 ; <i32> [#uses=1]
- %tmp13.upgrd.3 = icmp eq i32 %tmp13, 0 ; <i1> [#uses=1]
- br i1 %tmp13.upgrd.3, label %cond_next18, label %cond_true14
-cond_true14: ; preds = %cond_next10
- %tmp16 = getelementptr i32* %P, i32 2 ; <i32*> [#uses=1]
- store i32 1, i32* %tmp16
- br label %cond_next18
-cond_next18: ; preds = %cond_true14, %cond_next10
- %tmp21 = and i32 %c, 8 ; <i32> [#uses=1]
- %tmp21.upgrd.4 = icmp eq i32 %tmp21, 0 ; <i1> [#uses=1]
- br i1 %tmp21.upgrd.4, label %return, label %cond_true22
-cond_true22: ; preds = %cond_next18
- %tmp24 = getelementptr i32* %P, i32 3 ; <i32*> [#uses=1]
- store i32 1, i32* %tmp24
- ret void
-return: ; preds = %cond_next18
- ret void
-}
Removed: llvm/trunk/test/Transforms/TailDup/basictest.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/TailDup/basictest.ll?rev=138840&view=auto
==============================================================================
--- llvm/trunk/test/Transforms/TailDup/basictest.ll (original)
+++ llvm/trunk/test/Transforms/TailDup/basictest.ll (removed)
@@ -1,20 +0,0 @@
-; RUN: opt < %s -tailduplicate -disable-output
-
-declare void @__main()
-
-define i32 @main() {
-entry:
- call void @__main( )
- br label %loopentry
-loopentry: ; preds = %no_exit, %entry
- %i.0 = phi i32 [ %inc, %no_exit ], [ 0, %entry ] ; <i32> [#uses=3]
- %tmp.1 = icmp sle i32 %i.0, 99 ; <i1> [#uses=1]
- br i1 %tmp.1, label %no_exit, label %return
-no_exit: ; preds = %loopentry
- %tmp.51 = call i32 @main( ) ; <i32> [#uses=0]
- %inc = add i32 %i.0, 1 ; <i32> [#uses=1]
- br label %loopentry
-return: ; preds = %loopentry
- ret i32 %i.0
-}
-
Removed: llvm/trunk/test/Transforms/TailDup/basictest2.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/TailDup/basictest2.ll?rev=138840&view=auto
==============================================================================
--- llvm/trunk/test/Transforms/TailDup/basictest2.ll (original)
+++ llvm/trunk/test/Transforms/TailDup/basictest2.ll (removed)
@@ -1,15 +0,0 @@
-; RUN: opt < %s -tailduplicate -disable-output
-
-define void @ab() {
-entry:
- br label %loopentry.5
-loopentry.5: ; preds = %no_exit.5, %entry
- %poscnt.1 = phi i64 [ 0, %entry ], [ %tmp.289, %no_exit.5 ] ; <i64> [#uses=1]
- %tmp.289 = ashr i64 %poscnt.1, 1 ; <i64> [#uses=1]
- br i1 false, label %no_exit.5, label %loopexit.5
-no_exit.5: ; preds = %loopentry.5
- br label %loopentry.5
-loopexit.5: ; preds = %loopentry.5
- ret void
-}
-
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