Philip Reames 78cc6fcb01 [Statepoints 2/4] Statepoint infrastructure for garbage collection: MI & x86-64 Backend ... This is the second patch in a small series. This patch contains the MachineInstruction and x86-64 backend pieces required to lower Statepoints. It does not include the code to actually generate the STATEPOINT machine instruction and as a result, the entire patch is currently dead code. I will be submitting the SelectionDAG parts within the next 24-48 hours. Since those pieces are by far the most complicated, I wanted to minimize the size of that patch. That patch will include the tests which exercise the functionality in this patch. The entire series can be seen as one combined whole in http://reviews.llvm.org/D5683. The STATEPOINT psuedo node is generated after all gc values are explicitly spilled to stack slots. The purpose of this node is to wrap an actual call instruction while recording the spill locations of the meta arguments used for garbage collection and other purposes. The STATEPOINT is modeled as modifing all of those locations to prevent backend optimizations from forwarding the value from before the STATEPOINT to after the STATEPOINT. (Doing so would break relocation semantics for collectors which wish to relocate roots.) The implementation of STATEPOINT is closely modeled on PATCHPOINT. Eventually, much of the code in this patch will be removed. The long term plan is to merge the functionality provided by statepoints and patchpoints. Merging their implementations in the backend is likely to be a good starting point. Reviewed by: atrick, ributzka git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223085 91177308-0d34-0410-b5e6-96231b3b80d8		2014-12-01 22:52:56 +00:00
..
Analysis	[Statepoints 1/4] Statepoint infrastructure for garbage collection: IR Intrinsics	2014-12-01 21:18:12 +00:00
AsmParser	Parse 'ghccc' in .ll files as the GHC convention (cc 10)	2014-12-01 21:04:44 +00:00
Bitcode	Add and use Type::subtypes. NFC.	2014-11-24 20:44:36 +00:00
CodeGen	[Statepoints 2/4] Statepoint infrastructure for garbage collection: MI & x86-64 Backend	2014-12-01 22:52:56 +00:00
DebugInfo	Make DWARFAcceleratorTable::dump() const.	2014-11-20 16:21:11 +00:00
ExecutionEngine	Add LLVMObject to LLVMExecutionEngine.	2014-11-27 06:36:22 +00:00
IR	[Statepoints 1/4] Statepoint infrastructure for garbage collection: IR Intrinsics	2014-12-01 21:18:12 +00:00
IRReader	Remove unused variable. NFC.	2014-11-06 23:16:57 +00:00
LineEditor
Linker	Use a continue to reduce indentation and clang-format. NFC.	2014-12-01 19:17:46 +00:00
LTO	Remove StringMap::GetOrCreateValue in favor of StringMap::insert	2014-11-19 05:49:42 +00:00
MC	[NVPTX] Do not emit .weak symbols for NVPTX	2014-12-01 21:16:17 +00:00
Object	Object/COFF: Fix off-by-one error for object having lots of relocations	2014-11-26 22:17:25 +00:00
Option	Add an overload of getLastArgNoClaim taking two OptSpecifiers.	2014-09-12 19:42:53 +00:00
ProfileData	llvm-cov: Sink some reporting logic into CoverageMapping	2014-11-14 01:50:32 +00:00
Support	[msan] Annotate zlib functions for MemorySanitizer.	2014-11-25 15:24:07 +00:00
TableGen	Revert r222957 "Replace std::map<K, V*> with std::map<K, V> to handle ownership and deletion of the values."	2014-11-30 01:20:17 +00:00
Target	[Statepoints 2/4] Statepoint infrastructure for garbage collection: MI & x86-64 Backend	2014-12-01 22:52:56 +00:00
Transforms	Revert r223049, r223050 and r223051 while investigating test failures.	2014-12-01 17:36:43 +00:00
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