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Sanjoy Das ead2d1fbe0 [Statepoints] Support for "patchable" statepoints. 
Summary:
This change adds two new parameters to the statepoint intrinsic, `i64 id`
and `i32 num_patch_bytes`.  `id` gets propagated to the ID field
in the generated StackMap section.  If the `num_patch_bytes` is
non-zero then the statepoint is lowered to `num_patch_bytes` bytes of
nops instead of a call (the spill and reload code remains unchanged).
A non-zero `num_patch_bytes` is useful in situations where a language
runtime requires complete control over how a call is lowered.

This change brings statepoints one step closer to patchpoints.  With
some additional work (that is not part of this patch) it should be
possible to get rid of `TargetOpcode::STATEPOINT` altogether.

PlaceSafepoints generates `statepoint` wrappers with `id` set to
`0xABCDEF00` (the old default value for the ID reported in the stackmap)
and `num_patch_bytes` set to `0`.  This can be made more sophisticated
later.

Reviewers: reames, pgavlin, swaroop.sridhar, AndyAyers

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D9546

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237214 91177308-0d34-0410-b5e6-96231b3b80d8
2015-05-12 23:52:24 +00:00
..
AsmWriter.cpp [Statepoint] Clean up Statepoint.h: accessor names. 2015-05-06 02:36:26 +00:00
AttributeImpl.h Add missing dereferenceable_or_null getters 2015-05-06 17:41:54 +00:00
Attributes.cpp Change typeIncompatible to return an AttrBuilder instead of new-ing an AttributeSet. 2015-05-06 23:19:56 +00:00
AutoUpgrade.cpp AVX-512: Changed CC parameter in "cmp" intrinsic 2015-05-11 09:03:14 +00:00
BasicBlock.cpp Return iterator from BasicBlock::eraseFromParent 2015-04-03 01:20:33 +00:00
CMakeLists.txt [opaque pointer type] Explicit pointee type for GEPOperator/GEPConstantExpr. 2015-05-08 00:42:26 +00:00
Comdat.cpp
ConstantFold.cpp Recommit r236670: [opaque pointer type] Pass explicit pointer type through GEP constant folding"" 2015-05-07 17:28:58 +00:00
ConstantFold.h Recommit r236670: [opaque pointer type] Pass explicit pointer type through GEP constant folding"" 2015-05-07 17:28:58 +00:00
ConstantRange.cpp [ConstantRange] Split makeICmpRegion in two. 2015-03-18 00:41:24 +00:00
Constants.cpp [opaque pointer type] Explicit pointee type for GEPOperator/GEPConstantExpr. 2015-05-08 00:42:26 +00:00
ConstantsContext.h [opaque pointer type] Explicit pointee type for GEPOperator/GEPConstantExpr. 2015-05-08 00:42:26 +00:00
Core.cpp [opaque pointer type] Pass GlobalAlias the actual pointer type rather than decomposing it into pointee type + address space 2015-04-29 21:22:39 +00:00
DataLayout.cpp COFF: Let globals with private linkage reside in their own section 2015-03-17 23:54:51 +00:00
DebugInfo.cpp IR: Give 'DI' prefix to debug info metadata 2015-04-29 16:38:44 +00:00
DebugInfoMetadata.cpp IR: Give 'DI' prefix to debug info metadata 2015-04-29 16:38:44 +00:00
DebugLoc.cpp IR: Give 'DI' prefix to debug info metadata 2015-04-29 16:38:44 +00:00
DiagnosticInfo.cpp [IR/Diagnostic] Assert that DebugLoc is valid before accessing. 2015-05-04 18:08:35 +00:00
DiagnosticPrinter.cpp
DIBuilder.cpp IR: Give 'DI' prefix to debug info metadata 2015-04-29 16:38:44 +00:00
Dominators.cpp [DomTree] verifyDomTree to unconditionally perform DT verification 2015-05-06 08:18:41 +00:00
Function.cpp Replace branch-to-unreachable with assertion. 2015-05-08 18:52:28 +00:00
GCOV.cpp Remove more superfluous .str() and replace std::string concatenation with Twine. 2015-03-30 15:42:36 +00:00
Globals.cpp [opaque pointer type] Pass GlobalAlias the actual pointer type rather than decomposing it into pointee type + address space 2015-04-29 21:22:39 +00:00
GVMaterializer.cpp
InlineAsm.cpp Silence sign compare warning. NFC. 2015-03-29 20:49:03 +00:00
Instruction.cpp Return iterator from Instruction::eraseFromParent. 2015-04-02 00:03:07 +00:00
Instructions.cpp [opaque pointer type] Track explicit GEP pointee type through in-memory IR 2015-05-05 18:03:48 +00:00
IntrinsicInst.cpp
IRBuilder.cpp [Statepoints] Support for "patchable" statepoints. 2015-05-12 23:52:24 +00:00
IRPrintingPasses.cpp uselistorder: Pull the bit through PrintModulePass 2015-04-15 02:38:06 +00:00
LegacyPassManager.cpp [NFC] Converting to range-based for. 2015-04-29 21:45:22 +00:00
LLVMBuild.txt
LLVMContext.cpp
LLVMContextImpl.cpp Add the i128 builtin type to LLVM. 2015-04-17 15:32:15 +00:00
LLVMContextImpl.h IR: Give 'DI' prefix to debug info metadata 2015-04-29 16:38:44 +00:00
Makefile
Mangler.cpp Revert "Address review comments" 2015-03-17 20:40:21 +00:00
MDBuilder.cpp [IC] Turn non-null MD on pointer loads to range MD on integer loads. 2015-02-25 05:10:25 +00:00
Metadata.cpp IR: Add Function metadata attachments 2015-04-24 21:51:02 +00:00
MetadataImpl.h
MetadataTracking.cpp
Module.cpp Be lazy about loading metadata in IRObjectFile. 2015-03-13 21:54:20 +00:00
module.modulemap
Operator.cpp [opaque pointer type] Explicit pointee type for GEPOperator/GEPConstantExpr. 2015-05-08 00:42:26 +00:00
Pass.cpp
PassManager.cpp
PassRegistry.cpp Revert r231276 (including r231277): Add a lock() function in PassRegistry to speed up multi-thread synchronization. 2015-03-05 17:53:00 +00:00
Statepoint.cpp Add invoke related functionality into StatepointSite classes. 2015-02-19 11:02:11 +00:00
SymbolTableListTraitsImpl.h
Type.cpp Add the i128 builtin type to LLVM. 2015-04-17 15:32:15 +00:00
TypeFinder.cpp Fix Value dangling reference debug output 2015-03-10 23:55:38 +00:00
Use.cpp
User.cpp
Value.cpp Move Value.isDereferenceablePointer to ValueTracking [NFC] 2015-04-23 17:36:48 +00:00
ValueSymbolTable.cpp Changed renaming of local symbols by inserting a dot vefore the numeric suffix. 2015-05-12 16:47:30 +00:00
ValueTypes.cpp Add support for v1i128 type. 2015-04-17 16:11:05 +00:00
Verifier.cpp [Statepoints] Support for "patchable" statepoints. 2015-05-12 23:52:24 +00:00