llvm/lib/Transforms/Utils
Hal Finkel 8ef7b17dfc Add @llvm.assume, lowering, and some basic properties
This is the first commit in a series that add an @llvm.assume intrinsic which
can be used to provide the optimizer with a condition it may assume to be true
(when the control flow would hit the intrinsic call). Some basic properties are added here:

 - llvm.invariant(true) is dead.
 - llvm.invariant(false) is unreachable (this directly corresponds to the
   documented behavior of MSVC's __assume(0)), so is llvm.invariant(undef).

The intrinsic is tagged as writing arbitrarily, in order to maintain control
dependencies. BasicAA has been updated, however, to return NoModRef for any
particular location-based query so that we don't unnecessarily block code
motion.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213973 91177308-0d34-0410-b5e6-96231b3b80d8
2014-07-25 21:13:35 +00:00
..
AddDiscriminators.cpp
ASanStackFrameLayout.cpp Revert "Introduce a string_ostream string builder facilty" 2014-06-26 22:52:05 +00:00
BasicBlockUtils.cpp Revert "[C++11] Add predecessors(BasicBlock *) / successors(BasicBlock *) iterator ranges." 2014-07-21 17:06:51 +00:00
BreakCriticalEdges.cpp Revert "[C++11] Add predecessors(BasicBlock *) / successors(BasicBlock *) iterator ranges." 2014-07-21 17:06:51 +00:00
BuildLibCalls.cpp
BypassSlowDivision.cpp
CloneFunction.cpp Revert "[C++11] Add predecessors(BasicBlock *) / successors(BasicBlock *) iterator ranges." 2014-07-21 17:06:51 +00:00
CloneModule.cpp Allow alias to point to an arbitrary ConstantExpr. 2014-06-03 02:41:57 +00:00
CMakeLists.txt Decouple llvm::SpecialCaseList text representation and its LLVM IR semantics. 2014-07-09 19:40:08 +00:00
CmpInstAnalysis.cpp
CodeExtractor.cpp Revert "[C++11] Add predecessors(BasicBlock *) / successors(BasicBlock *) iterator ranges." 2014-07-21 17:06:51 +00:00
CtorUtils.cpp Add comdat key field to llvm.global_ctors and llvm.global_dtors 2014-05-16 20:39:27 +00:00
DemoteRegToStack.cpp
FlattenCFG.cpp
GlobalStatus.cpp
InlineFunction.cpp Convert noalias parameter attributes into noalias metadata during inlining 2014-07-25 15:50:08 +00:00
InstructionNamer.cpp
IntegerDivision.cpp
LCSSA.cpp
LLVMBuild.txt
Local.cpp Add @llvm.assume, lowering, and some basic properties 2014-07-25 21:13:35 +00:00
LoopSimplify.cpp Revert "[C++11] Add predecessors(BasicBlock *) / successors(BasicBlock *) iterator ranges." 2014-07-21 17:06:51 +00:00
LoopUnroll.cpp Revert "[C++11] Add predecessors(BasicBlock *) / successors(BasicBlock *) iterator ranges." 2014-07-21 17:06:51 +00:00
LoopUnrollRuntime.cpp Revert "[C++11] Add predecessors(BasicBlock *) / successors(BasicBlock *) iterator ranges." 2014-07-21 17:06:51 +00:00
LowerExpectIntrinsic.cpp
LowerInvoke.cpp
LowerSwitch.cpp Fixup PHIs in LowerSwitch when a Leaf node is not emitted. 2014-07-11 10:34:36 +00:00
Makefile
Mem2Reg.cpp
MetaRenamer.cpp
ModuleUtils.cpp Add comdat key field to llvm.global_ctors and llvm.global_dtors 2014-05-16 20:39:27 +00:00
PromoteMemoryToRegister.cpp Revert "[C++11] Add predecessors(BasicBlock *) / successors(BasicBlock *) iterator ranges." 2014-07-21 17:06:51 +00:00
SimplifyCFG.cpp Feedback from Hans on r213815. No functionaility change. 2014-07-24 21:13:20 +00:00
SimplifyIndVar.cpp
SimplifyInstructions.cpp
SimplifyLibCalls.cpp Add support for missed and analysis optimization remarks. 2014-05-22 14:19:46 +00:00
SSAUpdater.cpp Revert "[C++11] Add predecessors(BasicBlock *) / successors(BasicBlock *) iterator ranges." 2014-07-21 17:06:51 +00:00
UnifyFunctionExitNodes.cpp
Utils.cpp
ValueMapper.cpp