Geoff Berry ff1e9931cc Re-enable "[MachineCopyPropagation] Extend pass to do COPY source forwarding" ... Issues addressed since original review: - Avoid bug in regalloc greedy/machine verifier when forwarding to use in an instruction that re-defines the same virtual register. - Fixed bug when forwarding to use in EarlyClobber instruction slot. - Fixed incorrect forwarding to register definitions that showed up in explicit_uses() iterator (e.g. in INLINEASM). - Moved removal of dead instructions found by LiveIntervals::shrinkToUses() outside of loop iterating over instructions to avoid instructions being deleted while pointed to by iterator. - Fixed ARMLoadStoreOptimizer bug exposed by this change in r311907. - The pass no longer forwards COPYs to physical register uses, since doing so can break code that implicitly relies on the physical register number of the use. - The pass no longer forwards COPYs to undef uses, since doing so can break the machine verifier by creating LiveRanges that don't end on a use (since the undef operand is not considered a use). [MachineCopyPropagation] Extend pass to do COPY source forwarding This change extends MachineCopyPropagation to do COPY source forwarding. This change also extends the MachineCopyPropagation pass to be able to be run during register allocation, after physical registers have been assigned, but before the virtual registers have been re-written, which allows it to remove virtual register COPY LiveIntervals that become dead through the forwarding of all of their uses. llvm-svn: 314729		2017-10-02 22:01:37 +00:00
..
ADT	fix 80 column violation.	2017-09-29 22:46:22 +00:00
Analysis	Revert "Use the basic cost if a GEP is not used as addressing mode"	2017-09-29 22:04:45 +00:00
AsmParser	Move the stripping of invalid debug info from the Verifier to AutoUpgrade.	2017-10-02 18:31:29 +00:00
BinaryFormat	Add ELFOSABI_FIRST_ARCH, ELFOSABI_LAST_ARCH and start using those in llvm-readobj	2017-10-02 20:49:58 +00:00
Bitcode
CodeGen	Re-enable "[MachineCopyPropagation] Extend pass to do COPY source forwarding"	2017-10-02 22:01:37 +00:00
Config	Cleanup some problems with LLVM_ENABLE_DUMP in release builds, and	2017-09-27 21:19:56 +00:00
DebugInfo	Fix two header comments. NFC.	2017-10-02 19:48:28 +00:00
Demangle
ExecutionEngine	[ORC] Fix the type of RTDyldObjectLinkingLayer::NotifyLoadedFtor.	2017-09-28 17:43:07 +00:00
FuzzMutate
IR	Update getMergedLocation to check the instruction type and merge properly.	2017-10-02 18:13:14 +00:00
IRReader	Move the stripping of invalid debug info from the Verifier to AutoUpgrade.	2017-10-02 18:31:29 +00:00
LineEditor
Linker
LTO	[Support] Rename tool_output_file to ToolOutputFile, NFC	2017-09-23 01:03:17 +00:00
MC	Fix Wmismatched-tags warning.	2017-09-29 16:52:27 +00:00
Object	[WebAssembly] Use function/global index space in WasmSymbol	2017-09-26 18:21:12 +00:00
ObjectYAML	[WebAssembly] Allow each data segment to specify its own alignment	2017-09-29 16:50:08 +00:00
Option
Passes
ProfileData	Separate the logic when handling indirect calls in SamplePGO ThinLTO compile phase and other phases.	2017-10-01 05:24:51 +00:00
Support	Use a BumpPtrAllocator for Loop objects	2017-09-28 02:45:42 +00:00
TableGen
Target	[SystemZ] implement shouldCoalesce()	2017-09-29 14:31:39 +00:00
Testing/Support
ToolDrivers
Transforms	Separate the logic when handling indirect calls in SamplePGO ThinLTO compile phase and other phases.	2017-10-01 05:24:51 +00:00
WindowsManifest	Fix bug 34608 by moving private header out of public header.	2017-09-14 23:01:13 +00:00
WindowsResource	[llvm-readobj] Teach readobj to dump .res files (WindowsResource).	2017-09-20 18:33:35 +00:00
XRay	[XRay] convert FDR arg1 log entries	2017-09-27 04:48:03 +00:00
CMakeLists.txt
InitializePasses.h	Re-enable "[MachineCopyPropagation] Extend pass to do COPY source forwarding"	2017-10-02 22:01:37 +00:00
LinkAllIR.h
LinkAllPasses.h
module.modulemap	[ARC] Prepare the implementation of relocation for LLD	2017-09-13 01:49:49 +00:00
module.modulemap.build
Pass.h
PassAnalysisSupport.h
PassInfo.h
PassRegistry.h
PassSupport.h