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2009-08-07remove a bunch of now-dead crud from the asmprinter and TAI interfaces.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78428 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-07Back out some of recent register scavenger change by John Mosby. It broke a ↵Evan Cheng
number of ARM tests. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78421 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-07tidy upChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78416 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-07Rewrite previous patch to follow Chris' stylisticDale Johannesen
preference; no functional change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78391 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-07Another coalescer bug. When a dead copy is eliminated, transfer the kill to ↵Evan Cheng
a def of the exact register rather than a super-register. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78376 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-07Update CMake.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78367 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-07Fix a bunch of namespace pollution.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78363 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-07Fix a typo in a comment.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78362 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-07Code clean up.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78360 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-07Added legal stuff, fixed some formatting issues. Removed the graph generator ↵Lang Hames
stuff as it was only meant for debugging the solver. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78359 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-06New C++ PBQP solver. Currently about as fast (read _slow_) as the old C ↵Lang Hames
based solver, but I'll be working to improve that. The PBQP allocator has been updated to use the new solver. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78354 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-06Fix PR 4626, a crash in branch folding after OptimizeBlockDale Johannesen
produced a CFG it wasn't prepared for. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78351 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-06Use stripPointerCasts instead of partially rewriting it.Dale Johannesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78350 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-06Get rid of RegScavenger::backwards() before the bitrot spreads.Jakob Stoklund Olesen
If we need it one day, there is nothing wrong with putting it back in. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78337 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-06Reg Scavenging generalization (Thumb support):John Mosby
- start support for new PEI w/reg alloc, allow running RS from emit{Pro,Epi}logue() target hooks. - fix minor issue with recursion detection. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78318 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-06Add assertion checks after the calls to LowerFormalArguments, LowerCall,Dan Gohman
and LowerReturn, to verify that the targets' hooks have respected some of their postconditions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78312 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-06Remove an over-aggressive assert. Functions with empty struct returnDan Gohman
types don't have any return values, from CodeGen's perspective. This fixes PR4688. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78311 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-06Fix a few places in DAGCombiner that were creating all-ones-bitsDan Gohman
and high-bits values in ways that weren't correct for integer types wider than 64 bits. This fixes a miscompile in PPMacroExpansion.cpp in clang on x86-64. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78295 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-05Privatize the StructType table, which unfortunately involves routing ↵Owen Anderson
contexts through a number of APIs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78258 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-05Fix some column padding bugs, reorganize things as suggested by ChrisDavid Greene
and eliminate complexity. Yay! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78243 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-05remove the 'DataSectionStartSuffix' and 'TextSectionStartSuffix' knobs.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78242 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-05Rename a variable to make MSVC happy.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78202 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-05Disable stack coloring with register for now. It's not able to set kill markers.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78179 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-05Another nasty coalescer bug (is there another kind):Evan Cheng
After coalescing reg1027's def and kill are both at the same point: %reg1027,0.000000e+00 = [56,814:0) 0@70-(814) bb5: 60 %reg1027<def> = t2MOVr %reg1027, 14, %reg0, %reg0 68 %reg1027<def> = t2LDRi12 %reg1027<kill>, 8, 14, %reg0 76 t2CMPzri %reg1038<kill,undef>, 0, 14, %reg0, %CPSR<imp-def> 84 %reg1027<def> = t2MOVr %reg1027, 14, %reg0, %reg0 96 t2Bcc mbb<bb5,0x2030910>, 1, %CPSR<kill> Do not remove the kill marker on t2LDRi12. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78178 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-05Remove accidental commited commentBruno Cardoso Lopes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78177 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-05- Remove custom handling of jumptables by the elf writter (this wasBruno Cardoso Lopes
a dirty hack and isn't need anymore since the last x86 code emitter patch) - Add a target-dependent modifier to addend calculation - Use R_X86_64_32S relocation for X86::reloc_absolute_word_sext - Use getELFSectionFlags whenever possible - fix getTextSection to use TLOF and emit the right text section - Handle global emission for static ctors, dtors and Type::PointerTyID - Some minor fixes git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78176 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-05add a temporary hook to allow reuse of the asmprinter from the disassembler.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78154 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-05Turn some insert_subreg, extract_subreg, subreg_to_reg into implicit_defs.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78151 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-05One more. Transfer kill of the larger register when lowering an EXTRACT_SUBREG.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78145 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-05One more place where subreg lowering forgot to transfer undefness.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78144 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-05Major calling convention code refactoring.Dan Gohman
Instead of awkwardly encoding calling-convention information with ISD::CALL, ISD::FORMAL_ARGUMENTS, ISD::RET, and ISD::ARG_FLAGS nodes, TargetLowering provides three virtual functions for targets to override: LowerFormalArguments, LowerCall, and LowerRet, which replace the custom lowering done on the special nodes. They provide the same information, but in a more immediately usable format. This also reworks much of the target-independent tail call logic. The decision of whether or not to perform a tail call is now cleanly split between target-independent portions, and the target dependent portion in IsEligibleForTailCallOptimization. This also synchronizes all in-tree targets, to help enable future refactoring and feature work. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78142 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-05If the insert_subreg source is <undef>, insert an implicit_def instead of a ↵Evan Cheng
copy. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78141 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-05Various comment fixes.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78139 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-04Clean up the handling of two-address operands in RegScavenger.Jakob Stoklund Olesen
This fixes PR4528. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78107 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-04Don't give implicit machine operands special treatment in the register ↵Jakob Stoklund Olesen
scavenger. Imp-def is *not* allowed to redefine a live register. Imp-use is *not* allowed to use a dead register. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78106 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-04rip out SectionEndDirectiveSuffix support, only uses byChris Lattner
the masm backend. If anyone cares about masm in the future, we'll have semantic sections it can hang off of. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78096 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-04Don't tamper with <undef> operands in MachineInstr::addRegisterKilled.Jakob Stoklund Olesen
For an undef operand, MO.getReg() is meaningless and we should not use it. Undef operands should be skipped entirely. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78095 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-04LowerSubregsInstructionPass::LowerExtract should not extend the live range ↵Jakob Stoklund Olesen
of registers. When LowerExtract eliminates an EXTRACT_SUBREG with a kill flag, it moves the kill flag to the place where the sub-register is killed. This can accidentally overlap with the use of a sibling sub-register, and we have trouble. In the test case we have this code: Live Ins: %R0 %R1 %R2 %R2L<def> = EXTRACT_SUBREG %R2<kill>, 1 %R2H<def> = LOAD16fi <fi#-1>, 0, Mem:LD(2,4) [FixedStack-1 + 0] %R1L<def> = EXTRACT_SUBREG %R1<kill>, 1 %R0L<def> = EXTRACT_SUBREG %R0<kill>, 1 %R0H<def> = ADD16 %R2H<kill>, %R2L<kill>, %AZ<imp-def>, %AN<imp-def>, %AC0<imp-def>, %V<imp-def>, %VS<imp-def> subreg: CONVERTING: %R2L<def> = EXTRACT_SUBREG %R2<kill>, 1 subreg: eliminated! subreg: killed here: %R0H<def> = ADD16 %R2H, %R2L, %R2<imp-use,kill>, %AZ<imp-def>, %AN<imp-def>, %AC0<imp-def>, %V<imp-def>, %VS<imp-def> The kill flag on %R2 is moved to the last instruction, and the live range overlaps with the definition of %R2H: *** Bad machine code: Redefining a live physical register *** - function: f - basic block: 0x18358c0 (#0) - instruction: %R2H<def> = LOAD16fi <fi#-1>, 0, Mem:LD(2,4) [FixedStack-1 + 0] Register R2H was defined but already live. The fix is to replace EXTRACT_SUBREG with IMPLICIT_DEF instead of eliminating it completely: subreg: CONVERTING: %R2L<def> = EXTRACT_SUBREG %R2<kill>, 1 subreg: replace by: %R2L<def> = IMPLICIT_DEF %R2<kill> Note that these IMPLICIT_DEF instructions survive to the asm output. It is necessary to fix the stack-color-with-reg test case because of that. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78093 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-04Enforce stricter rules in machine code verifier.Jakob Stoklund Olesen
Implicit operands no longer get a free pass: Imp-use requires a live register and imp-def requires a dead register. There is also no special rule allowing redefinition of a sub-register when the super-register is live. The super register must have imp-kill+imp-def operands instead. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78090 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-04Fix PR4528. This scavenger assertion is too strict. The two-address value isEvan Cheng
killed by another operand. There is probably a better fix. Either 1) scavenger can look at other operands, or 2) livevariables can be smarter about kill markers. Patches welcome. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78072 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-04Propogate the Depth argument when callingDan Gohman
TLI.computeMaskedBitsForTargetNode from ComputeMaskedBits, since the former may call back into the latter. This fixes a major compile time problem on a testcase that happnened to hit this in a particularly bad way, PR4643. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78023 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-03Update CMake files.Ted Kremenek
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78020 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-03eliminate CurrentSection, rename CurrentSection_ -> CurrentSection, make it ↵Chris Lattner
private, eliminate IsInTextSection. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78017 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-03Kill off SwitchToDataSection and SwitchToTextSection, woo.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78015 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-03Re-apply LiveInterval index dumping patch, with fixes suggested by BillDavid Greene
and others. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78003 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-03Fix Bug 4657: register scavenger asserts with subreg loweringJakob Stoklund Olesen
When LowerSubregsInstructionPass::LowerInsert eliminates an INSERT_SUBREG instriction because it is an identity copy, make sure that the same registers are alive before and after the elimination. When the super-register is marked <undef> this requires inserting an IMPLICIT_DEF instruction to make sure the super register is live. Fix a related bug where a kill flag on the inserted sub-register was not transferred properly. Finally, clear the undef flag in MachineInstr::addRegisterKilled. Undef implies dead and kill implies live, so they cant both be valid. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77989 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-03make getObjFileLowering() return a non-const reference.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77984 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-03Revert 77974. It breaks 3 of the ARM tests.Bob Wilson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77982 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-03make SwitchToSection accept null sections for now.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77976 91177308-0d34-0410-b5e6-96231b3b80d8
2009-08-03Allow targets to custom handle softening of results or operands before ↵Sanjiv Gupta
trying the standard stuff. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77974 91177308-0d34-0410-b5e6-96231b3b80d8
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