Add "check/remove dbg var" helper routines.

llvm-svn: 66223

Marking debug info intrinsics as not touching memory
caused them to be considered trivially dead. Fix this.

llvm-svn: 65979

Enable scalar replacement of AllocaInst whose one of the user is dbg info.

llvm-svn: 64207

Revert rev. 63876. It is causing llvm-gcc bootstrap failure.

llvm-svn: 63888

Ignore dbg intrinsics while propagating conditional expression info.

llvm-svn: 63876

use precise getters

llvm-svn: 63402

rewrite RecursivelyDeleteTriviallyDeadInstructions to use a more efficient
formulation that doesn't require set lookups or scanning a set.

llvm-svn: 60203

remove some weirdness that came from the LSR code that has
nothing to do with dead instruction elimination. No tests in
dejagnu depend on this, so I don't know what it was needed for.

llvm-svn: 602

remove some weirdness that came from the LSR code that has
nothing to do with dead instruction elimination. No tests in
dejagnu depend on this, so I don't know what it was needed for.

llvm-svn: 60202

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enhance RecursivelyDeleteTriviallyDeadInstructions to make
PHIs dead if they are single-value.

llvm-svn: 60194

Enhance RecursivelyDeleteTriviallyDeadInstructions to optionally
return a list of deleted instructions.

llvm-svn: 60193

remove doConstantPropagation and dceInstruction, they are just
wrappers around the interesting code and use an obscure iterator
abstraction that dates back many many years.

Move EraseDeadInstruction

remove doConstantPropagation and dceInstruction, they are just
wrappers around the interesting code and use an obscure iterator
abstraction that dates back many many years.

Move EraseDeadInstructions to Transforms/Utils and name it
RecursivelyDeleteTriviallyDeadInstructions.

llvm-svn: 60191

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move MergeBasicBlockIntoOnlyPred to Transforms/Utils.

llvm-svn: 60162

Use Instruction::eraseFromParent().

llvm-svn: 52606

API changes for class Use size reduction, wave 1.
Specifically, introduction of XXX::Create methods
for Users that have a potentially variable number of
Uses.

llvm-svn: 49277

Remove attribution from file headers, per discussion on llvmdev.

llvm-svn: 45418

dead calls to llvm.stacksave can be deleted, even though they
have potential side-effects.

llvm-svn: 45392

Move the GET_SIDE_EFFECT_INFO logic from isInstructionTriviallyDead
to Instruction::mayWriteToMemory, fixing a FIXME, and helping
various places that call mayWriteToMemory directly.

llvm-svn: 40533

move a bunch of constant folding code f rom Transforms/Utils/Local.cpp into
libanalysis/ConstantFolding.cpp.

llvm-svn: 33679

remove now-dead code.

llvm-svn: 33678

Change constant folding APIs to take an optional TargetData, and change
ConstantFoldInstOperands/ConstantFoldCall to take a pointer to an array
of operands + size, instead of an std::vector.

In some

Change constant folding APIs to take an optional TargetData, and change
ConstantFoldInstOperands/ConstantFoldCall to take a pointer to an array
of operands + size, instead of an std::vector.

In some cases, switch to using a SmallVector instead of a vector.
This allows us to get rid of some special case gross code that was there
to avoid the cost of constructing a vector.

llvm-svn: 33670

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Implement review feedback for the ConstantBool->ConstantInt merge. Chris
recommended that getBoolValue be replaced with getZExtValue and that
get(bool) be replaced by get(const Type*, uint64_t). This

Implement review feedback for the ConstantBool->ConstantInt merge. Chris
recommended that getBoolValue be replaced with getZExtValue and that
get(bool) be replaced by get(const Type*, uint64_t). This implements
those changes.

llvm-svn: 33110

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For PR1043:
Merge ConstantIntegral and ConstantBool into ConstantInt.
Remove ConstantIntegral and ConstantBool from LLVM.

llvm-svn: 33073

For PR950:
This patch removes the SetCC instructions and replaces them with the ICmp
and FCmp instructions. The SetCondInst instruction has been removed and
been replaced with ICmpInst and FCmpInst.

For PR950:
This patch removes the SetCC instructions and replaces them with the ICmp
and FCmp instructions. The SetCondInst instruction has been removed and
been replaced with ICmpInst and FCmpInst.

llvm-svn: 32751

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For PR950:
The long awaited CAST patch. This introduces 12 new instructions into LLVM
to replace the cast instruction. Corresponding changes throughout LLVM are
provided. This passes llvm-test, llvm/

For PR950:
The long awaited CAST patch. This introduces 12 new instructions into LLVM
to replace the cast instruction. Corresponding changes throughout LLVM are
provided. This passes llvm-test, llvm/test, and SPEC CPUINT2000 with the
exception of 175.vpr which fails only on a slight floating point output
difference.

llvm-svn: 31931

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Remove redundant <cmath>.

llvm-svn: 31561