Evan Cheng 5379f412bc Fix PR3149. If an early clobber def is a physical register and it is tied to an input operand, it effectively extends the live range of the physical register. Currently we do not have a good way to represent this. ... 172 %ECX<def> = MOV32rr %reg1039<kill> 180 INLINEASM <es:subl $5,$1 sbbl $3,$0>, 10, %EAX<def>, 14, %ECX<earlyclobber,def>, 9, %EAX<kill>, 36, <fi#0>, 1, %reg0, 0, 9, %ECX<kill>, 36, <fi#1>, 1, %reg0, 0 188 %EAX<def> = MOV32rr %EAX<kill> 196 %ECX<def> = MOV32rr %ECX<kill> 204 %ECX<def> = MOV32rr %ECX<kill> 212 %EAX<def> = MOV32rr %EAX<kill> 220 %EAX<def> = MOV32rr %EAX 228 %reg1039<def> = MOV32rr %ECX<kill> The early clobber operand ties ECX input to the ECX def. The live interval of ECX is represented as this: %reg20,inf = [46,47:1)[174,230:0) 0@174-(230) 1@46-(47) The right way to represent this is something like %reg20,inf = [46,47:2)[174,182:1)[181:230:0) 0@174-(182) 1@181-230 @2@46-(47) Of course that won't work since that means overlapping live ranges defined by two val#. The workaround for now is to add a bit to val# which says the val# is redefined by a early clobber def somewhere. This prevents the move at 228 from being optimized away by SimpleRegisterCoalescing::AdjustCopiesBackFrom. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61259 91177308-0d34-0410-b5e6-96231b3b80d8		2008-12-19 20:58:01 +00:00
..
ADT	Add explicit this-> for some member function in templated base class.	2008-12-13 10:55:13 +00:00
Analysis	Today the front-ends (llvm-gcc and clang) generate multiple llvm.dbg.compile_units to identify source file for various debug entities. Each llvm.dbg.compile_unit matches one file on the disk. However, the backend only supports one DW_TAG_compile_unit per .o file. The backend selects first compile_unit from the vector to construct DW_TAG_compile_unit entry, which is not correct in all cases.	2008-12-17 22:39:29 +00:00
Assembly	Move Print*Pass to use raw_ostream.	2008-10-22 03:25:22 +00:00
Bitcode	Add support for writing LLVM IR to a specified BitstreamWriter.	2008-12-19 18:37:59 +00:00
CodeGen	Fix PR3149. If an early clobber def is a physical register and it is tied to an input operand, it effectively extends the live range of the physical register. Currently we do not have a good way to represent this.	2008-12-19 20:58:01 +00:00
CompilerDriver	Some enhancements for the 'case' expression.	2008-12-17 02:47:01 +00:00
Config	CMake: Remove HAVE_LT_DLOPEN from config.h.cmake because it was	2008-11-18 21:12:01 +00:00
Debugger
ExecutionEngine	DisableGVCompilation should not abort on internal GlobalValue's.	2008-12-09 07:31:49 +00:00
Support	newline at end of phile	2008-12-09 06:32:32 +00:00
System	Update the stub and callback code to handle lazy compilation. The stub	2008-10-20 21:39:23 +00:00
Target	Fix bug 3202.	2008-12-19 10:55:56 +00:00
Transforms	Factor some code into a new FoldSingleEntryPHINodes method.	2008-12-03 19:44:02 +00:00
AbstractTypeUser.h
Argument.h	Large mechanical patch.	2008-09-25 21:00:45 +00:00
Attributes.h	Resubmit support for the 'nocapture' attribute.	2008-12-19 06:39:12 +00:00
AutoUpgrade.h
BasicBlock.h	fix grammar, thanks Duncan!	2008-12-11 11:44:49 +00:00
CallGraphSCCPass.h
CallingConv.h	Add "inreg" field to CallSDNode (doesn't increase	2008-09-26 19:31:26 +00:00
CMakeLists.txt	CMake: Adds header and TableGen files to Visual Studio solution. A new	2008-11-15 02:08:08 +00:00
Constant.h	fix typo's	2008-10-13 10:28:12 +00:00
Constants.h	Make ConstantAggregateZero::get return a ConstantAggregateZero*,	2008-12-08 07:10:54 +00:00
DerivedTypes.h
Function.h	Fix disagreement about where the attributes are	2008-10-07 22:33:44 +00:00
GlobalAlias.h
GlobalValue.h	Rename isWeakForLinker to mayBeOverridden. Use it	2008-09-29 11:25:42 +00:00
GlobalVariable.h
InlineAsm.h	Keep track of *which* input constraint matches an output	2008-10-17 16:47:46 +00:00
InstrTypes.h	Use the opcode predicates, instead of duplicating the code.	2008-10-17 21:42:45 +00:00
Instruction.def	Cosmetic.	2008-10-06 20:33:02 +00:00
Instruction.h	improve const correctness.	2008-11-27 08:39:18 +00:00
Instructions.h	add a long-overdue AllocaInst::isStaticAlloca method.	2008-11-26 02:54:17 +00:00
IntrinsicInst.h	reapply Sanjiv's patch to genericize memcpy/memset/memmove to take an	2008-11-21 16:42:48 +00:00
Intrinsics.h	Large mechanical patch.	2008-09-25 21:00:45 +00:00
Intrinsics.td	Add sub/mul overflow intrinsics. This currently doesn't have a	2008-12-09 22:08:41 +00:00
IntrinsicsAlpha.td	Modify the intrinsics pattern to separate out the "return" types from the	2008-11-13 09:08:33 +00:00
IntrinsicsARM.td	Modify the intrinsics pattern to separate out the "return" types from the	2008-11-13 09:08:33 +00:00
IntrinsicsCellSPU.td	Modify the intrinsics pattern to separate out the "return" types from the	2008-11-13 09:08:33 +00:00
IntrinsicsPowerPC.td	Modify the intrinsics pattern to separate out the "return" types from the	2008-11-13 09:08:33 +00:00
IntrinsicsX86.td	Modify the intrinsics pattern to separate out the "return" types from the	2008-11-13 09:08:33 +00:00
IntrinsicsXCore.td	Add XCore intrinsics for getid (returns thread id) and bitrev (reverses	2008-11-14 10:12:16 +00:00
LinkAllPasses.h	Add -print-dbginfo pass that prints LLVM IR with comments inserted to show	2008-12-16 09:09:19 +00:00
LinkAllVMCore.h	opt was not exporting the Mangler symbols	2008-11-05 22:42:50 +00:00
Linker.h	Make comments and code for QuietWarnings and QuietErrors	2008-10-25 17:57:20 +00:00
Module.h	- Add a "getOrInsertGlobal" method to the Module class. This acts similarly to	2008-11-04 22:51:24 +00:00
ModuleProvider.h
OperandTraits.h
Pass.h	Add an assert to catch user errors like:	2008-10-31 17:27:41 +00:00
PassAnalysisSupport.h
PassManager.h
PassManagers.h	Trim #includes.	2008-10-16 20:18:31 +00:00
PassSupport.h
SymbolTableListTraits.h
Type.h	add a new form of Type::dump that takes a module for type names,	2008-10-01 20:16:19 +00:00
TypeSymbolTable.h
Use.h	Add comment on how tagged pointers are	2008-10-17 08:31:36 +00:00
User.h	Do not allow a user to set the operand for a constant.	2008-10-28 17:22:40 +00:00
Value.h	Comment typeo fix, thanks Duncan!	2008-12-02 18:33:11 +00:00
ValueSymbolTable.h