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llvm-6502/lib/Target/R600
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Andrew Trick c4c5a1d526 Allow MachineCSE to coalesce trivial subregister copies the same way that it coalesces normal copies. 
Without this, MachineCSE is powerless to handle redundant operations with truncated source operands.

This required fixing the 2-addr pass to handle tied subregisters. It isn't clear what combinations of subregisters can legally be tied, but the simple case of truncated source operands is now safely handled:

     %vreg11<def> = COPY %vreg1:sub_32bit; GR32:%vreg11 GR64:%vreg1
     %vreg12<def> = COPY %vreg2:sub_32bit; GR32:%vreg12 GR64:%vreg2
     %vreg13<def,tied1> = ADD32rr %vreg11<tied0>, %vreg12<kill>, %EFLAGS<imp-def>

Test case: cse-add-with-overflow.ll.

This exposed an existing bug in
PPCInstrInfo::commuteInstruction. Thanks to Rafael for the test case:
PowerPC/crash.ll.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197465 91177308-0d34-0410-b5e6-96231b3b80d8
2013-12-17 04:50:45 +00:00
..
InstPrinter [CMake] Let add_public_tablegen_target responsible to provide dependency to CommonTableGen. 2013-11-28 17:04:04 +00:00
MCTargetDesc Don't set unused variable. 2013-12-11 20:40:57 +00:00
TargetInfo Prune redundant dependencies in LLVMBuild.txt. 2013-12-11 00:30:57 +00:00
AMDGPU.h R600: Register AMDGPUCFGStructurizer pass 2013-12-11 17:51:47 +00:00
AMDGPU.td Change the default of AsmWriterClassName and isMCAsmWriter. 2013-12-02 04:55:42 +00:00
AMDGPUAsmPrinter.cpp Use llvm_unreachable instead of assert(0) 2013-12-10 21:37:42 +00:00
AMDGPUAsmPrinter.h Add a default constructor to get deterministic behavior. 2013-12-05 16:21:17 +00:00
AMDGPUCallingConv.td R600: Use function inputs to represent data stored in gpr 2013-11-11 22:10:24 +00:00
AMDGPUConvertToISA.cpp
AMDGPUFrameLowering.cpp R600: Fix calculation of stack offset in AMDGPUFrameLowering 2013-06-07 20:52:05 +00:00
AMDGPUFrameLowering.h R600: Support for indirect addressing v4 2013-02-06 17:32:29 +00:00
AMDGPUInstrInfo.cpp Use llvm_unreachable instead of assert(0) 2013-12-10 21:37:42 +00:00
AMDGPUInstrInfo.h R600/SI: Implement spilling of SGPRs v5 2013-11-27 21:23:35 +00:00
AMDGPUInstrInfo.td R600: Add support for ISD::FROUND 2013-11-27 21:23:20 +00:00
AMDGPUInstructions.td R600/SI: Fixing handling of condition codes 2013-11-22 23:07:58 +00:00
AMDGPUIntrinsics.td R600: Add support for GROUP_BARRIER instruction 2013-06-28 15:46:59 +00:00
AMDGPUISelDAGToDAG.cpp R600/SI: Add support for private address space load/store 2013-11-13 23:36:50 +00:00
AMDGPUISelLowering.cpp Don't manually calculate size in bytes 2013-12-14 18:21:59 +00:00
AMDGPUISelLowering.h Add target hook to prevent folding some bitcasted loads. 2013-11-15 04:42:23 +00:00
AMDGPUMachineFunction.cpp [weak vtables] Remove a bunch of weak vtables 2013-11-19 00:57:56 +00:00
AMDGPUMachineFunction.h [weak vtables] Remove a bunch of weak vtables 2013-11-19 00:57:56 +00:00
AMDGPUMCInstLower.cpp R600: Store disassembly in a special ELF section when feature +DumpCode is enabled. 2013-10-12 05:02:51 +00:00
AMDGPUMCInstLower.h R600: BB operand support for SI 2012-12-17 15:14:54 +00:00
AMDGPURegisterInfo.cpp Use llvm_unreachable instead of assert(0) 2013-12-10 21:37:42 +00:00
AMDGPURegisterInfo.h R600/SI: Add support for private address space load/store 2013-11-13 23:36:50 +00:00
AMDGPURegisterInfo.td Make SubRegIndex size mandatory, following r183020. 2013-05-31 23:45:26 +00:00
AMDGPUSubtarget.cpp Turn AMDGPUSubtarget::getDataLayout into a static function. 2013-12-14 06:13:44 +00:00
AMDGPUSubtarget.h Turn AMDGPUSubtarget::getDataLayout into a static function. 2013-12-14 06:13:44 +00:00
AMDGPUTargetMachine.cpp One last cleanup of LLVM's DataLayout strings. 2013-12-16 19:31:14 +00:00
AMDGPUTargetMachine.h SimplifyCFG: Use parallel-and and parallel-or mode to consolidate branch conditions 2013-07-27 00:01:07 +00:00
AMDGPUTargetTransformInfo.cpp SimplifyCFG: Use parallel-and and parallel-or mode to consolidate branch conditions 2013-07-27 00:01:07 +00:00
AMDILBase.td R600: Move Subtarget feature definitions into AMDGPU.td 2013-06-07 20:28:49 +00:00
AMDILCFGStructurizer.cpp R600: Register AMDGPUCFGStructurizer pass 2013-12-11 17:51:47 +00:00
AMDILInstrInfo.td R600: Enable -verify-machineinstrs in some tests. 2013-10-01 19:32:38 +00:00
AMDILIntrinsicInfo.cpp R600: Rework subtarget info and remove AMDILDevice classes 2013-06-07 20:37:48 +00:00
AMDILIntrinsicInfo.h Move all of the header files which are involved in modelling the LLVM IR 2013-01-02 11:36:10 +00:00
AMDILIntrinsics.td R600/SI: Use MULADD_IEEE/V_MAD_F32 instruction for mad pattern 2013-02-18 14:11:28 +00:00
AMDILISelLowering.cpp Make some arrays 'static const' 2013-07-15 06:39:13 +00:00
AMDILRegisterInfo.td
CMakeLists.txt [CMake] Let add_public_tablegen_target() provide intrinsics_gen, too. 2013-11-28 17:04:31 +00:00
LLVMBuild.txt Add proper dependencies to LLVMBuild.txt in llvm/lib. 2013-12-10 05:39:34 +00:00
Makefile
Processors.td R600: Re-format Processors.td 2013-12-11 17:51:51 +00:00
R600ClauseMergePass.cpp R600: add a pass that merges clauses. 2013-10-01 19:32:58 +00:00
R600ControlFlowFinalizer.cpp R600: Workaround for cayman loop bug 2013-12-02 17:29:37 +00:00
R600Defines.h R600: Add support for i8 and i16 local memory stores 2013-08-26 15:05:49 +00:00
R600EmitClauseMarkers.cpp R600: Register R600EmitClauseMarkers pass 2013-12-11 17:51:41 +00:00
R600ExpandSpecialInstrs.cpp R600: Fix input modifiers lost for Cayman 2013-12-10 14:43:27 +00:00
R600InstrFormats.td R600: Use SchedModel enum for is{Trans,Vector}Only functions 2013-09-04 19:53:30 +00:00
R600InstrInfo.cpp R600: Implement TargetInstrInfo::isLegalToSplitMBBAt() 2013-11-22 00:41:08 +00:00
R600InstrInfo.h R600: Implement TargetInstrInfo::isLegalToSplitMBBAt() 2013-11-22 00:41:08 +00:00
R600Instructions.td R600: Workaround for cayman loop bug 2013-12-02 17:29:37 +00:00
R600Intrinsics.td R600: Reenable llvm.R600.load.input/interp.input for compatibility 2013-11-12 16:26:47 +00:00
R600ISelLowering.cpp Use llvm_unreachable instead of assert(0) 2013-12-10 21:37:42 +00:00
R600ISelLowering.h R600/SI: Add support for private address space load/store 2013-11-13 23:36:50 +00:00
R600MachineFunctionInfo.cpp [weak vtables] Remove a bunch of weak vtables 2013-11-19 00:57:56 +00:00
R600MachineFunctionInfo.h [weak vtables] Remove a bunch of weak vtables 2013-11-19 00:57:56 +00:00
R600MachineScheduler.cpp R600: Fix scheduling of instructions that use the LDS output queue 2013-11-15 00:12:45 +00:00
R600MachineScheduler.h R600: Fix scheduling of instructions that use the LDS output queue 2013-11-15 00:12:45 +00:00
R600OptimizeVectorRegisters.cpp Use llvm_unreachable instead of assert(0) 2013-12-10 21:37:42 +00:00
R600Packetizer.cpp R600: Simplify handling of private address space 2013-10-22 18:19:10 +00:00
R600RegisterInfo.cpp R600: Fix scheduling of instructions that use the LDS output queue 2013-11-15 00:12:45 +00:00
R600RegisterInfo.h R600: Fix scheduling of instructions that use the LDS output queue 2013-11-15 00:12:45 +00:00
R600RegisterInfo.td R600: Simplify handling of private address space 2013-10-22 18:19:10 +00:00
R600Schedule.td R600: Add local memory support via LDS 2013-06-28 15:47:08 +00:00
R600TextureIntrinsicsReplacer.cpp R600: Coding style 2013-09-05 23:55:13 +00:00
SIAnnotateControlFlow.cpp Use llvm_unreachable instead of assert(0) 2013-12-10 21:37:42 +00:00
SIDefines.h R600/SI: Prefer SALU instructions for bit shift operations 2013-11-13 23:36:37 +00:00
SIFixSGPRCopies.cpp R600/SI: Fix illegal VGPR->SGPR copy inside of loop 2013-11-18 18:50:20 +00:00
SIInsertWaits.cpp R600/SI: Add support for private address space load/store 2013-11-13 23:36:50 +00:00
SIInstrFormats.td R600/SI: Prefer SALU instructions for bit shift operations 2013-11-13 23:36:37 +00:00
SIInstrInfo.cpp Allow MachineCSE to coalesce trivial subregister copies the same way that it coalesces normal copies. 2013-12-17 04:50:45 +00:00
SIInstrInfo.h Use llvm_unreachable instead of assert(0) 2013-12-10 21:37:42 +00:00
SIInstrInfo.td R600/SI: Add support for private address space load/store 2013-11-13 23:36:50 +00:00
SIInstructions.td Fix typo in instruction name. 2013-12-16 20:58:33 +00:00
SIIntrinsics.td R600/SI: expose TBUFFER_STORE_FORMAT_* for OpenGL transform feedback 2013-09-12 02:55:14 +00:00
SIISelLowering.cpp R600/SI: Fixing handling of condition codes 2013-11-22 23:07:58 +00:00
SIISelLowering.h R600/SI: Implement add i64, but do not yet enable. 2013-11-18 20:09:47 +00:00
SILowerControlFlow.cpp Use llvm_unreachable instead of assert(0) 2013-12-10 21:37:42 +00:00
SIMachineFunctionInfo.cpp R600/SI: Implement spilling of SGPRs v5 2013-11-27 21:23:35 +00:00
SIMachineFunctionInfo.h R600/SI: Implement spilling of SGPRs v5 2013-11-27 21:23:35 +00:00
SIRegisterInfo.cpp R600/SI: Fix moveToVALU when the first operand is VSrc. 2013-11-18 20:09:55 +00:00
SIRegisterInfo.h R600/SI: Add support for private address space load/store 2013-11-13 23:36:50 +00:00
SIRegisterInfo.td R600: Fix handling of vector kernel arguments 2013-10-23 00:44:32 +00:00
SISchedule.td
SITypeRewriter.cpp R600/SI: Replace v1i32 type with i32 in imageload and sample intrinsics 2013-08-14 23:24:53 +00:00