Jakob Stoklund Olesen 6a4a23b14f Add a MachineOperand::isTied() flag. ... While in SSA form, a MachineInstr can have pairs of tied defs and uses. The tied operands are used to represent read-modify-write operands that must be assigned the same physical register. Previously, tied operand pairs were computed from fixed MCInstrDesc fields, or by using black magic on inline assembly instructions. The isTied flag makes it possible to add tied operands to any instruction while getting rid of (some of) the inlineasm magic. Tied operands on normal instructions are needed to represent predicated individual instructions in SSA form. An extra <tied,imp-use> operand is required to represent the output value when the instruction predicate is false. Adding a predicate to: %vreg0<def> = ADD %vreg1, %vreg2 Will look like: %vreg0<tied,def> = ADD %vreg1, %vreg2, pred:3, %vreg7<tied,imp-use> The virtual register %vreg7 is the value given to %vreg0 when the predicate is false. It will be assigned the same physreg as %vreg0. This commit adds the isTied flag and sets it based on MCInstrDesc when building an instruction. The flag is not used for anything yet. llvm-svn: 162774		2012-08-28 18:34:41 +00:00
..
ADT	Add the Freescale vendor to Triple.	2012-08-28 02:10:30 +00:00
Analysis	Remove the the block_node_iterator of Region, replace it by the block_iterator.	2012-08-27 13:49:24 +00:00
Assembly
Bitcode	Fix a bunch of -Wdocumentation warnings.	2012-08-23 16:54:08 +00:00
CodeGen	Add a MachineOperand::isTied() flag.	2012-08-28 18:34:41 +00:00
Config	Add support for detecting libxml for Dmitri's work. He'll	2012-08-03 19:47:19 +00:00
DebugInfo	Add basic support for .debug_ranges section to LLVM's DebugInfo library.	2012-08-27 07:17:47 +00:00
ExecutionEngine
MC	Lower constant pools and jump tables via TOC on PPC64/SVR4.	2012-08-24 16:26:02 +00:00
Object	Fix misaligned access in MachO object file reader: despite containing an	2012-08-21 20:52:03 +00:00
Support	Fix integer undefined behavior due to signed left shift overflow in LLVM.	2012-08-24 23:29:28 +00:00
TableGen	Tristate mayLoad, mayStore, and hasSideEffects.	2012-08-23 19:34:46 +00:00
Target	Remove extra MayLoad/MayStore flags from atomic_load/store.	2012-08-28 03:11:32 +00:00
Transforms
Argument.h
Attributes.h	[ms-inline asm] Add a new Inline Asm Non-Standard Dialect attribute.	2012-08-10 00:00:22 +00:00
AutoUpgrade.h
BasicBlock.h
CallGraphSCCPass.h
CallingConv.h
CMakeLists.txt
Constant.h
Constants.h
DebugInfo.h
DefaultPasses.h
DerivedTypes.h
DIBuilder.h	Fix a bunch of -Wdocumentation warnings.	2012-08-23 16:54:08 +00:00
Function.h
GlobalAlias.h
GlobalValue.h	Change the linker_private_weak_def_auto' linkage to linkonce_odr_auto_hide' to	2012-08-17 18:33:14 +00:00
GlobalVariable.h
GVMaterializer.h
InitializePasses.h
InlineAsm.h
InstrTypes.h	Fix a bunch of -Wdocumentation warnings.	2012-08-23 16:54:08 +00:00
Instruction.def
Instruction.h
Instructions.h
IntrinsicInst.h
Intrinsics.h
Intrinsics.td
IntrinsicsARM.td
IntrinsicsCellSPU.td
IntrinsicsHexagon.td	Test commit.	2012-08-17 06:36:26 +00:00
IntrinsicsMips.td	Support MIPS DSP Rev2 intrinsics.	2012-08-27 12:29:01 +00:00
IntrinsicsNVVM.td
IntrinsicsPowerPC.td
IntrinsicsX86.td	Mark avx2 maskstore has ReadWriteArgMem. Mark broadcast and maskload as ReadArgMem.	2012-08-26 22:01:42 +00:00
IntrinsicsXCore.td
IRBuilder.h
LinkAllPasses.h
LinkAllVMCore.h
Linker.h
LLVMContext.h
MDBuilder.h
Metadata.h
Module.h	Move the "findUsedStructTypes" functionality outside of the Module class.	2012-08-03 00:30:35 +00:00
OperandTraits.h
Operator.h
Pass.h
PassAnalysisSupport.h
PassManager.h
PassManagers.h
PassRegistry.h
PassSupport.h
SymbolTableListTraits.h
Type.h
TypeBuilder.h
TypeFinder.h	Move the "findUsedStructTypes" functionality outside of the Module class.	2012-08-03 00:30:35 +00:00
Use.h
User.h
Value.h
ValueSymbolTable.h