David Majnemer 2822246ece [IR] Make getFirstNonPHI return null if the BB is empty ... getFirstNonPHI's documentation states that it returns null if there is no non-PHI instruction. However, it instead returns a pointer to the end iterator. The implementation of getFirstNonPHI claims that dereferencing the iterator will result in an assertion failure but this doesn't occur. Instead, machinery like getFirstInsertionPt will attempt to isa<> this invalid memory which results in unpredictable behavior. Instead, make getFirst* return null if no such instruction exists. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241570 91177308-0d34-0410-b5e6-96231b3b80d8		2015-07-07 09:15:29 +00:00
..
AsmWriter.cpp	Add a DIModule metadata node to the IR.	2015-06-29 23:03:47 +00:00
AttributeImpl.h
Attributes.cpp
AutoUpgrade.cpp	Remove always-true comparison, NFC.	2015-07-03 20:12:01 +00:00
BasicBlock.cpp	[IR] Make getFirstNonPHI return null if the BB is empty	2015-07-07 09:15:29 +00:00
CMakeLists.txt
Comdat.cpp
ConstantFold.cpp
ConstantFold.h
ConstantRange.cpp
Constants.cpp	Devirtualize Constant::replaceUsesOfWithOnConstant.	2015-06-24 18:55:24 +00:00
ConstantsContext.h
Core.cpp
DataLayout.cpp
DebugInfo.cpp	Add a DIModule metadata node to the IR.	2015-06-29 23:03:47 +00:00
DebugInfoMetadata.cpp	Add a DIModule metadata node to the IR.	2015-06-29 23:03:47 +00:00
DebugLoc.cpp
DiagnosticInfo.cpp
DiagnosticPrinter.cpp
DIBuilder.cpp	DIBuilder: Don't rauw null pointers with empty arrays in finalize().	2015-07-06 16:36:02 +00:00
Dominators.cpp
Function.cpp
GCOV.cpp
Globals.cpp	Devirtualize Constant::replaceUsesOfWithOnConstant.	2015-06-24 18:55:24 +00:00
GVMaterializer.cpp
InlineAsm.cpp
Instruction.cpp	Devirtualize Instruction::clone_impl	2015-06-24 20:22:23 +00:00
Instructions.cpp	Add functions for adding and testing string attributes to CallInst. NFC.	2015-07-02 22:08:48 +00:00
IntrinsicInst.cpp
IRBuilder.cpp
IRPrintingPasses.cpp
LegacyPassManager.cpp
LLVMBuild.txt
LLVMContext.cpp
LLVMContextImpl.cpp
LLVMContextImpl.h	Add a DIModule metadata node to the IR.	2015-06-29 23:03:47 +00:00
Makefile
Mangler.cpp	Remove unused arguments and move ManglerPrefixTy to the implementation.	2015-06-23 14:11:09 +00:00
MDBuilder.cpp
Metadata.cpp
MetadataImpl.h
MetadataTracking.cpp
Module.cpp
module.modulemap
Operator.cpp
Pass.cpp
PassManager.cpp
PassRegistry.cpp
Statepoint.cpp
SymbolTableListTraitsImpl.h
Type.cpp
TypeFinder.cpp
Use.cpp
User.cpp
Value.cpp	Devirtualize Constant::replaceUsesOfWithOnConstant.	2015-06-24 18:55:24 +00:00
ValueSymbolTable.cpp
ValueTypes.cpp
Verifier.cpp	Verifier: Forbid comdats on linker declarations.	2015-07-05 20:52:40 +00:00