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path: root/lib/CodeGen/SelectionDAG/InstrEmitter.cpp
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2010-08-30When adding a register, we should mark it as "def" if it can optionally defineBill Wendling
said (physical) register. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112461 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-10Emit COPY instructions instead of using copyRegToReg in InstrEmitter,Jakob Stoklund Olesen
ScheduleDAGEmit, TwoAddressLowering, and PHIElimination. This switches the bulk of register copies to using COPY, but many less used copyRegToReg calls remain. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108050 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-10Insert IMPLICIT_DEF instructions at the current insert position, notDan Gohman
at the end of the block. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108045 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-10Reapply bottom-up fast-isel, with several fixes for x86-32:Dan Gohman
- Check getBytesToPopOnReturn(). - Eschew ST0 and ST1 for return values. - Fix the PIC base register initialization so that it doesn't ever fail to end up the top of the entry block. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108039 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-09--- Reverse-merging r107947 into '.':Bob Wilson
U utils/TableGen/FastISelEmitter.cpp --- Reverse-merging r107943 into '.': U test/CodeGen/X86/fast-isel.ll U test/CodeGen/X86/fast-isel-loads.ll U include/llvm/Target/TargetLowering.h U include/llvm/Support/PassNameParser.h U include/llvm/CodeGen/FunctionLoweringInfo.h U include/llvm/CodeGen/CallingConvLower.h U include/llvm/CodeGen/FastISel.h U include/llvm/CodeGen/SelectionDAGISel.h U lib/CodeGen/LLVMTargetMachine.cpp U lib/CodeGen/CallingConvLower.cpp U lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp U lib/CodeGen/SelectionDAG/FunctionLoweringInfo.cpp U lib/CodeGen/SelectionDAG/FastISel.cpp U lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp U lib/CodeGen/SelectionDAG/ScheduleDAGSDNodes.cpp U lib/CodeGen/SelectionDAG/InstrEmitter.cpp U lib/CodeGen/SelectionDAG/TargetLowering.cpp U lib/Target/XCore/XCoreISelLowering.cpp U lib/Target/XCore/XCoreISelLowering.h U lib/Target/X86/X86ISelLowering.cpp U lib/Target/X86/X86FastISel.cpp U lib/Target/X86/X86ISelLowering.h git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107987 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-09Re-apply bottom-up fast-isel, with fixes. Be very careful to avoid emittingDan Gohman
a DBG_VALUE after a terminator, or emitting any instructions before an EH_LABEL. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107943 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-08Convert EXTRACT_SUBREG to COPY when emitting machine instrs.Jakob Stoklund Olesen
EXTRACT_SUBREG no longer appears as a machine instruction. Use COPY instead. Add isCopy() checks in many places using isMoveInstr() and isExtractSubreg(). The isMoveInstr hook will be removed later. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107879 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-08Revert 107840 107839 107813 107804 107800 107797 107791.Dan Gohman
Debug info intrinsics win for now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107850 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-07Not all custom inserters create new basic blocks. If the inserterDan Gohman
didn't create a new block, don't reset the insert position. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107813 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-07Update comment.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107796 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-06Reapply r107655 with fixes; insert the pseudo instruction intoDan Gohman
the block before calling the expansion hook. And don't put EFLAGS in a mbb's live-in list twice. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107691 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-02Propagate the AlignStack bit in InlineAsm's to the Dale Johannesen
PrologEpilog code, and use it to determine whether the asm forces stack alignment or not. gcc consistently does not do this for GCC-style asms; Apple gcc inconsistently sometimes does it for asm blocks. There is no convenient place to put a bit in either the SDNode or the MachineInstr form, so I've added an extra operand to each; unlovely, but it does allow for expansion for more bits, should we need it. PR 5125. Some existing testcases are affected. The operand lists of the SDNode and MachineInstr forms are indexed with awesome mnemonics, like "2"; I may fix this someday, but not now. I'm not making it any worse. If anyone is inspired I think you can find all the right places from this patch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107506 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-29Add a VT argument to getMinimalPhysRegClass and replace the copy related usesRafael Espindola
of getPhysicalRegisterRegClass with it. If we want to make a copy (or estimate its cost), it is better to use the smallest class as more efficient operations might be possible. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107140 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-18Teach regular and fast isel to set dead flags on unused implicit defsDan Gohman
on calls and similar instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106353 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-09Mark physregs defined by inline asm as implicit.Jakob Stoklund Olesen
This is a bit of a hack to make inline asm look more like call instructions. It would be better to produce correct dead flags during isel. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105749 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-09Add argument name comments.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105665 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-18Continuously refine the register class of REG_SEQUENCE def with all the ↵Evan Cheng
source registers and sub-register indices. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104051 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-18Fix PR7162: Use source register classes and sub-indices to determine the ↵Evan Cheng
correct register class of the definitions of REG_SEQUENCE. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104050 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-14Don't set kill flags for instructions which the scheduler has cloned.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103827 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-11Don't set kill flags on uses of CopyFromReg nodes. InstrEmitter doesn'tDan Gohman
create separate virtual registers for CopyFromReg values, so uses of them don't necessarily kill the value. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103519 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-10Indentation.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103441 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-07SDDbgValues are apparently not being legalized. Fix a symptom of the problem,Dan Gohman
and not the real problem itself, by dropping debug info for i128 values. rdar://7958162. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103310 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-06Add a DebugLoc argument to TargetInstrInfo::copyRegToReg, so that itDan Gohman
doesn't have to guess. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103194 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-04Teach scheduler about REG_SEQUENCE.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102984 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-04Re-enable isel kill flags, now that the local allocator is ignoring them.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102981 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01Re-disable kill flags, as there is more trouble.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102826 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01Re-enable kill flags from SelectionDAGISel, with a fix: don'tDan Gohman
try to put a kill flag on a DBG_INFO instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102820 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01Get rid of the EdgeMapping map. Instead, just check for BasicBlockDan Gohman
changes before doing phi lowering for switches. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102809 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-30EmitDbgValue doesn't need its EdgeMapping argument.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102742 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-30Temporarily disable SelectionDAG kill flags, which are causing trouble.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102680 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-30Set register kill flags on the SelectionDAG path, at least in theDan Gohman
easy cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102678 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-26Avoid adding a null MD node operand, which crashes with "-debug" when tryingBob Wilson
to print the operand. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102395 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-26- Move TargetLowering::EmitTargetCodeForFrameDebugValue to TargetInstrInfo ↵Evan Cheng
and rename it to emitFrameIndexDebugValue. - Teach spiller to modify DBG_VALUE instructions to reference spill slots. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102323 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-25Stop abusing EmitInstrWithCustomInserter for target-dependentDale Johannesen
form of DEBUG_VALUE, as it doesn't have reasonable default behavior for unsupported targets. Add a new hook instead. No functional change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102320 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-20Delete a redundant return statement.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101860 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-15Add const qualifiers to CodeGen's use of LLVM IR constructs.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101334 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-07Have the inst emitter add the !srcloc mdnode to the machine instr.Chris Lattner
Have the asmprinter use the mdnode to scavenge a source location if present. Document this nonsense in langref. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100607 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-07Three changes:Chris Lattner
1. Introduce some enums and accessors in the InlineAsm class that eliminate a ton of magic numbers when handling inline asm SDNode. 2. Add a new MDNodeSDNode selection dag node type that holds a MDNode (shocking!) 3. Add a new argument to ISD::INLINEASM nodes that hold !srcloc metadata, propagating it to the instruction emitter, which drops it. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100605 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-06Allow for the possibility that a debug-value pointsDale Johannesen
to a SDNode that didn't have code generated for it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100566 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-26LiveVariables should clear kill / dead markers first. This allows us to ↵Evan Cheng
remove a hack in the scheduler. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99597 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-25fix a valgrind error on copy-constructor-synthesis.cpp, which is caused whenChris Lattner
the custom insertion hook deletes the instruction, then we try to set dead flags on it. Neither the code that I added nor the code that was there before was safe. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99538 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-25Make the NDEBUG assertion stronger and more clear what is Chris Lattner
happening. Enhance scheduling to set the DEAD flag on implicit defs more aggressively. Before, we'd set an implicit def operand to dead if it were present in the SDNode corresponding to the machineinstr but had no use. Now we do it in this case AND if the implicit def does not exist in the SDNode at all. This exposes a couple of problems: one is the FIXME, which causes a live intervals crash on CodeGen/X86/sibcall.ll. The second is that it makes machinecse and licm more aggressive (which is a good thing) but also exposes a case where licm hoists a set0 and then it doesn't get resunk. Talking to codegen folks about both these issues, but I need this patch in in the meantime. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99485 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-25reapply 99444/99445, which I speculatively reverted inChris Lattner
r99453. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99482 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-25Change how dbg_value sdnodes are converted into machine instructions. Their ↵Evan Cheng
placement should be determined by the relative order of incoming llvm instructions. The scheduler will now use the SDNode ordering information to determine where to insert them. A dbg_value instruction is inserted after the instruction with the last highest source order and before the instruction with the next highest source order. It will optimize the placement by inserting right after the instruction that produces the value if they have consecutive order numbers. Here is a theoretical example that illustrates why the placement is important. tmp1 = store tmp1 -> x ... tmp2 = add ... ... call ... store tmp2 -> x Now mem2reg comes along: tmp1 = dbg_value (tmp1 -> x) ... tmp2 = add ... ... call ... dbg_value (tmp2 -> x) When the debugger examine the value of x after the add instruction but before the call, it should have the value of tmp1. Furthermore, for dbg_value's that reference constants, they should not be emitted at the beginning of the block (since they do not have "producers"). This patch also cleans up how SDISel manages DbgValue nodes. It allow a SDNode to be referenced by multiple SDDbgValue nodes. When a SDNode is deleted, it uses the information to find the SDDbgValues and invalidate them. They are not deleted until the corresponding SelectionDAG is destroyed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99469 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-24revert 99444/99445. This doesn't cause the failure of Chris Lattner
2006-07-19-stwbrx-crash.ll for me, but it's the only likely patch in the blame list of several bots. Lets see if this fixes it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99453 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-24remove dead argument.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99445 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-24split EmitNode in half to reduce indentation.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99444 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-14Rename SDDbgValue.h to SDNodeDbgValue.h for consistency.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98513 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-14change the LabelSDNode to be EHLabelSDNode and make it holdChris Lattner
an MCSymbol. Make the EH_LABEL MachineInstr hold its label with an MCSymbol instead of ID. Fix a bug in MMI.cpp which would return labels named "Label4" instead of "label4". git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98463 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-10Cosmetic: lengthen names and improve comments.Dale Johannesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98202 91177308-0d34-0410-b5e6-96231b3b80d8
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