llvm_unreachable->llvm_unreachable(0), LLVM_UNREACHABLE->llvm_unreachable.
This adds location info for all llvm_unreachable calls (which is a macro now) in
!NDEBUG builds.
In NDEBUG builds location i

llvm_unreachable->llvm_unreachable(0), LLVM_UNREACHABLE->llvm_unreachable.
This adds location info for all llvm_unreachable calls (which is a macro now) in
!NDEBUG builds.
In NDEBUG builds location info and the message is off (it only prints
"UREACHABLE executed").

llvm-svn: 75640

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Convert more assert(0)+abort() -> LLVM_UNREACHABLE,
and abort()/exit() -> llvm_report_error().

llvm-svn: 75363

This started as a small change, I swear. Unfortunately, lots of things call the [I|F]CmpInst constructors. Who knew!?

llvm-svn: 75200

More LLVMContext-ification.

llvm-svn: 74807

Re-apply 70645, converting ScalarEvolution to use
CallbackVH, with fixes. allUsesReplacedWith need to
walk the def-use chains and invalidate all users of a
value that is replaced. SCEVs of users need

Re-apply 70645, converting ScalarEvolution to use
CallbackVH, with fixes. allUsesReplacedWith need to
walk the def-use chains and invalidate all users of a
value that is replaced. SCEVs of users need to be
recalcualted even if the new value is equivalent. Also,
make forgetLoopPHIs walk def-use chains, since any
SCEV that depends on a PHI should be recalculated when
more information about that PHI becomes available.

llvm-svn: 70927

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Factor loop backedge finding out of CodeGenPrepare into a new
FindFunctionBackedges function.

llvm-svn: 70819

Revert r70645 for now; it's causing a variety of regressions.

llvm-svn: 70661

Convert ScalarEvolution to use CallbackVH for its internal map. This
makes ScalarEvolution::deleteValueFromRecords, and it's code that
subtly needed to be called before ReplaceAllUsesWith, unnecessar

Convert ScalarEvolution to use CallbackVH for its internal map. This
makes ScalarEvolution::deleteValueFromRecords, and it's code that
subtly needed to be called before ReplaceAllUsesWith, unnecessary.

It also makes ValueDeletionListener unnecessary.

llvm-svn: 70645

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Previously, RecursivelyDeleteDeadInstructions provided an option
of returning a list of pointers to Values that are deleted. This was
unsafe, because the pointers in the list are, by nature of what
R

Previously, RecursivelyDeleteDeadInstructions provided an option
of returning a list of pointers to Values that are deleted. This was
unsafe, because the pointers in the list are, by nature of what
RecursivelyDeleteDeadInstructions does, always dangling. Replace this
with a simple callback mechanism. This may eventually be removed if
all clients can reasonably be expected to use CallbackVH.

Use this to factor out the dead-phi-cycle-elimination code from LSR
utility function, and generalize it to use the
RecursivelyDeleteTriviallyDeadInstructions utility function.

This makes LSR more aggressive about eliminating dead PHI cycles;
adjust tests to either be less trivial or to simply expect fewer
instructions.

llvm-svn: 70636

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Skip ptr-to-ptr bitcasts when counting in another case.

llvm-svn: 66000

Instruction counters must skip the bitcasts that
feed into llvm.dbg.declare nodes, as well as
the debug directives themselves.

llvm-svn: 65976

When removing a store to an alloca that has only one
use, check also for the case where it has two uses,
the other being a llvm.dbg.declare. This is needed so
debug info doesn't affect codegen.

llv

When removing a store to an alloca that has only one
use, check also for the case where it has two uses,
the other being a llvm.dbg.declare. This is needed so
debug info doesn't affect codegen.

llvm-svn: 65970

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Fix a bunch of Doxygen syntax issues. Escape special characters,
and put @file directives on their own comment line.

llvm-svn: 65920

When sinking an insn in InstCombine bring its debug
info with it.
Don't count debug info insns against the scan maximum
in FindAvailableLoadedValue (lest they affect codegen).

llvm-svn: 65910

While folding unconditional return move DbgRegionEndInst into the predecessor, instead of removing it. This fixes following tests from llvmgcc42 testsuite.

gcc.c-torture/execute/20000605-3.c
gcc.c-t

While folding unconditional return move DbgRegionEndInst into the predecessor, instead of removing it. This fixes following tests from llvmgcc42 testsuite.

gcc.c-torture/execute/20000605-3.c
gcc.c-torture/execute/20020619-1.c
gcc.c-torture/execute/20030920-1.c
gcc.c-torture/execute/loop-ivopts-1.c

llvm-svn: 65353

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If llvm.dbg.region.end is disappearing then remove corresponding llvm.dbg.func.start also.

llvm-svn: 64278

Rename getAnalysisToUpdate to getAnalysisIfAvailable.

llvm-svn: 63198

Factor some code into a new FoldSingleEntryPHINodes method.

llvm-svn: 60501

third time is the charm.

llvm-svn: 60469

fix assertion.

llvm-svn: 60468

Rename DeleteBlockIfDead to DeleteDeadBlock and make it
unconditionally delete the block. All likely clients will
do the checking anyway.

llvm-svn: 60464

Factor some code out of SimplifyCFG, forming a new
DeleteBlockIfDead method.

llvm-svn: 60463

switch InstCombine::visitLoadInst to use
FindAvailableLoadedValue

llvm-svn: 60169

enhance FindAvailableLoadedValue to make use of AliasAnalysis
if it has it.

llvm-svn: 60167

move FindAvailableLoadedValue from JumpThreading to Transforms/Utils.

llvm-svn: 60166