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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
autoconf Expose LLVM version string via macro in llvm-config.h, and modify Go bindings 2014-11-19 03:34:17 +00:00
bindings [OCaml] Move Llvm.clone_module to its own Llvm_transform_utils module. 2014-12-01 19:50:39 +00:00
cmake [OCaml] [cmake] Add CMake buildsystem for OCaml. 2014-12-01 19:50:23 +00:00
docs [OCaml] Move Llvm.clone_module to its own Llvm_transform_utils module. 2014-12-01 19:50:39 +00:00
examples [CMake] llvm/examples: Update libdeps for unoptimized builds. 2014-10-31 15:27:16 +00:00
include [Statepoints 2/4] Statepoint infrastructure for garbage collection: MI & x86-64 Backend 2014-12-01 22:52:56 +00:00
lib [Statepoints 2/4] Statepoint infrastructure for garbage collection: MI & x86-64 Backend 2014-12-01 22:52:56 +00:00
projects [cmake] Use the external project machinery for libcxxabi so that it can 2014-07-25 10:27:40 +00:00
test [Statepoints 1/4] Statepoint infrastructure for garbage collection: IR Intrinsics 2014-12-01 21:18:12 +00:00
tools DebugIR: Delete -debug-ir 2014-11-29 03:15:47 +00:00
unittests DebugIR: Delete -debug-ir 2014-11-29 03:15:47 +00:00
utils [Statepoints 2/4] Statepoint infrastructure for garbage collection: MI & x86-64 Backend 2014-12-01 22:52:56 +00:00
.arcconfig Updated phabricator server. 2014-04-07 03:57:04 +00:00
.clang-format Test commit. 2014-03-02 13:08:46 +00:00
.clang-tidy Enable display of compiler diagnostics in clang-tidy by default. 2014-10-29 17:29:38 +00:00
.gitignore Initial version of Go bindings. 2014-10-16 22:48:02 +00:00
CMakeLists.txt [OCaml] [cmake] Add CMake buildsystem for OCaml. 2014-12-01 19:50:23 +00:00
CODE_OWNERS.TXT Add Tom Stellard's role as 3.5 release manager. 2014-09-12 08:07:31 +00:00
configure Expose LLVM version string via macro in llvm-config.h, and modify Go bindings 2014-11-19 03:34:17 +00:00
CREDITS.TXT Rise from the dead and update personal info 2014-08-25 17:51:04 +00:00
LICENSE.TXT Remove projects/sample. 2014-03-12 22:40:22 +00:00
llvm.spec.in
LLVMBuild.txt Remove the very substantial, largely unmaintained legacy PGO 2013-10-02 15:42:23 +00:00
Makefile [configure/make] Propagate names of build host tools when making BuildTools 2014-03-25 21:45:41 +00:00
Makefile.common Makefile.common: Update a description, s/Source/SOURCES/ , according to MakefileGuide.html#control-variables . 2012-12-07 01:43:23 +00:00
Makefile.config.in Add a check for misbehaving -Wcomment from gcc-4.7 and add 2014-11-05 00:35:15 +00:00
Makefile.rules Add a check for misbehaving -Wcomment from gcc-4.7 and add 2014-11-05 00:35:15 +00:00
README.txt Trivial test commit. 2014-04-26 19:05:45 +00:00

README.txt 

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