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* SjLj based exception handling unwinding support. This patch is nasty, brutishJim Grosbach2009-08-116-50/+145
| | | | | | | | | | | | | and short. Well, it's kinda short. Definitely nasty and brutish. The front-end generates the register/unregister calls into the SjLj runtime, call-site indices and landing pad dispatch. The back end fills in the LSDA with the call-site information provided by the front end. Catch blocks are not yet implemented. Built on Darwin and verified no llvm-core "make check" regressions. llvm-svn: 78625
* Modified VNInfo. The "copy" member is now a union which holds the copy for a ↵Lang Hames2009-08-106-31/+31
| | | | | | register interval, or the defining register for a stack interval. Access is via getCopy/setCopy and getReg/setReg. llvm-svn: 78620
* Fix a bug in the DAGCombiner's handling of multiple linkedDan Gohman2009-08-101-3/+8
| | | | | | | | | | | MERGE_VALUES nodes. Replacing the result values with the operands in one MERGE_VALUES node may cause another MERGE_VALUES node be CSE'd with the first one, and bring its uses along, so that the first one isn't dead, as this code expects. Fix this by iterating until the node is really dead. This fixes PR4699. llvm-svn: 78619
* Fix a bug where DAGCombine was producing an illegal ConstantFPDan Gohman2009-08-101-1/+12
| | | | | | | node after legalize, and remove the workaround code from the ARM backend. llvm-svn: 78615
* Rename MVT to EVT, in preparation for splitting SimpleValueType out into its ↵Owen Anderson2009-08-1021-1772/+1772
| | | | | | own struct type. llvm-svn: 78610
* Remove a bunch of debugging code that was slowing PBQP down by 25% or so.Owen Anderson2009-08-101-45/+0
| | | | llvm-svn: 78601
* Start moving TargetLowering away from using full MVTs and towards ↵Owen Anderson2009-08-104-11/+16
| | | | | | SimpleValueType, which will simplify the privatization of IntegerType in the future. llvm-svn: 78584
* Make this comment more closely reflect the code.Dan Gohman2009-08-101-1/+1
| | | | llvm-svn: 78569
* Add support for printing loop structure information in asm comments.David Greene2009-08-101-3/+99
| | | | | | | | | | This definitely slows down asm output so put it under an -asm-exuberant flag. This information is useful when doing static analysis of performance issues. llvm-svn: 78567
* Post RA scheduler changes. Introduce a hazard recognizer that uses the ↵David Goodwin2009-08-106-78/+331
| | | | | | target schedule information to accurately model the pipeline. Update the scheduler to correctly handle multi-issue targets. llvm-svn: 78563
* Move ConstantExpr handling to ResolveConstantExpr method and alsoBruno Cardoso Lopes2009-08-102-28/+87
| | | | | | add support for PtrToInt, Add, Mul. llvm-svn: 78552
* sink the 'name' and 'isdirective' state out of MCSection into its derived ↵Chris Lattner2009-08-082-12/+15
| | | | | | | | classes. This totally optimizes PIC16 sections by not having an 'isdirective' bit anymore!! ;-) llvm-svn: 78517
* 1. Make MCSection an abstract class.Chris Lattner2009-08-081-12/+1
| | | | | | | | | 2. Move section switch printing to MCSection virtual method which takes a TAI. This eliminates textual formatting stuff from TLOF. 3. Eliminate SwitchToSectionDirective, getSectionFlagsAsString, and TLOFELF::AtIsCommentChar. llvm-svn: 78510
* eliminate TargetLoweringObjectFileSparc in favor of a TAI hook.Chris Lattner2009-08-081-1/+1
| | | | | | | | A TAI hook is appropriate in this case because this is just an asm syntax issue, not a semantic difference. TLOF should model the semantics of the section. llvm-svn: 78498
* Don't build illegal ops in DAGCombiner::SimplifyBinOpWithSameOpcodeHands().Jakob Stoklund Olesen2009-08-081-1/+3
| | | | | | | | Blackfin supports and/or/xor on i32 but not on i16. Teach DAGCombiner::SimplifyBinOpWithSameOpcodeHands to not produce illegal nodes after legalize ops. llvm-svn: 78497
* ELF improvements:Bruno Cardoso Lopes2009-08-083-58/+94
| | | | | | | | | | | Handle large integers, x86_fp80, ConstantAggregateZero, and two more ConstantExpr: GetElementPtr and IntToPtr Set SHF_MERGE bit for mergeable strings Avoid zero initialized strings to be classified as a bss symbol Don't allow common symbols to be classified as STB_WEAK Add a constant to be used as a global value offset in data relocations llvm-svn: 78476
* Clean out per-function data after the machine code verifier is done with it.Jakob Stoklund Olesen2009-08-081-0/+8
| | | | | | | | | | | | | | | Also don't dereference old pointers after they have been deleted causing random crashes when enabling the machine code verifier. Ahem... I have not included a test case for the crash. It hapened when enabling the verifier on CodeGen/X86/2009-08-06-branchfolder-crash.ll. The crash depends on an MBB being allocated at the same address as a previously deleted MBB. I don't think that can be reproduced reliably. llvm-svn: 78472
* Update the machine code verifier to keep up with the scavenger.Jakob Stoklund Olesen2009-08-081-12/+22
| | | | | | | | | * Cleaner handling of <undef>. * <def> takes precedence over <def,dead>. * Implement the OK-to-redefine-a-register-that-was- live-in-but-has-not-been-used-before rule. llvm-svn: 78467
* Remove RegisterScavenger::isSuperRegUsed(). This completely reverses the ↵Jakob Stoklund Olesen2009-08-082-38/+9
| | | | | | | | | | | | | | | mistaken commit r77904. Now there is no special treatment of instructions that redefine part of a super-register. Instead, the super-register is marked with <imp-use,kill> and <imp-def>. For instance, from LowerSubregs on ARM: subreg: CONVERTING: %Q1<def> = INSERT_SUBREG %Q1<undef>, %D1<kill>, 5 subreg: %D2<def> = FCPYD %D1<kill>, 14, %reg0, %Q1<imp-def> subreg: CONVERTING: %Q1<def> = INSERT_SUBREG %Q1, %D0<kill>, 6 subreg: %D3<def> = FCPYD %D0<kill>, 14, %reg0, %Q1<imp-use,kill>, %Q1<imp-def> llvm-svn: 78466
* Simplify RegScavenger::forward a bit more.Jakob Stoklund Olesen2009-08-081-65/+53
| | | | | | | | | | | Verify that early clobber registers and their aliases are not used. All changes to RegsAvailable are now done as a transaction so the order of operands makes no difference. The included test case is from PR4686. It has behaviour that was dependent on the order of operands. llvm-svn: 78465
* Fix some -Asserts unused variable warnings.Daniel Dunbar2009-08-082-6/+5
| | | | llvm-svn: 78447
* code cleanupChris Lattner2009-08-071-20/+18
| | | | llvm-svn: 78432
* remove a bunch of now-dead crud from the asmprinter and TAI interfaces.Chris Lattner2009-08-071-32/+0
| | | | llvm-svn: 78428
* Back out some of recent register scavenger change by John Mosby. It broke a ↵Evan Cheng2009-08-071-27/+14
| | | | | | number of ARM tests. llvm-svn: 78421
* tidy upChris Lattner2009-08-071-7/+4
| | | | llvm-svn: 78416
* Rewrite previous patch to follow Chris' stylisticDale Johannesen2009-08-071-14/+22
| | | | | | preference; no functional change. llvm-svn: 78391
* Another coalescer bug. When a dead copy is eliminated, transfer the kill to ↵Evan Cheng2009-08-071-5/+6
| | | | | | a def of the exact register rather than a super-register. llvm-svn: 78376
* Update CMake.Daniel Dunbar2009-08-071-1/+0
| | | | llvm-svn: 78367
* Fix a bunch of namespace pollution.Dan Gohman2009-08-071-2/+16
| | | | llvm-svn: 78363
* Fix a typo in a comment.Dan Gohman2009-08-071-1/+1
| | | | llvm-svn: 78362
* Code clean up.Evan Cheng2009-08-071-4/+5
| | | | llvm-svn: 78360
* Added legal stuff, fixed some formatting issues. Removed the graph generator ↵Lang Hames2009-08-0710-254/+142
| | | | | | stuff as it was only meant for debugging the solver. llvm-svn: 78359
* New C++ PBQP solver. Currently about as fast (read _slow_) as the old C ↵Lang Hames2009-08-0613-1785/+2850
| | | | | | based solver, but I'll be working to improve that. The PBQP allocator has been updated to use the new solver. llvm-svn: 78354
* Fix PR 4626, a crash in branch folding after OptimizeBlockDale Johannesen2009-08-061-1/+17
| | | | | | produced a CFG it wasn't prepared for. llvm-svn: 78351
* Use stripPointerCasts instead of partially rewriting it.Dale Johannesen2009-08-061-4/+2
| | | | llvm-svn: 78350
* Get rid of RegScavenger::backwards() before the bitrot spreads.Jakob Stoklund Olesen2009-08-061-64/+0
| | | | | | If we need it one day, there is nothing wrong with putting it back in. llvm-svn: 78337
* Reg Scavenging generalization (Thumb support):John Mosby2009-08-061-27/+52
| | | | | | | - start support for new PEI w/reg alloc, allow running RS from emit{Pro,Epi}logue() target hooks. - fix minor issue with recursion detection. llvm-svn: 78318
* Add assertion checks after the calls to LowerFormalArguments, LowerCall,Dan Gohman2009-08-061-1/+34
| | | | | | | and LowerReturn, to verify that the targets' hooks have respected some of their postconditions. llvm-svn: 78312
* Remove an over-aggressive assert. Functions with empty struct returnDan Gohman2009-08-061-3/+0
| | | | | | | types don't have any return values, from CodeGen's perspective. This fixes PR4688. llvm-svn: 78311
* Fix a few places in DAGCombiner that were creating all-ones-bitsDan Gohman2009-08-061-5/+17
| | | | | | | | 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. llvm-svn: 78295
* Privatize the StructType table, which unfortunately involves routing ↵Owen Anderson2009-08-051-5/+5
| | | | | | contexts through a number of APIs. llvm-svn: 78258
* Fix some column padding bugs, reorganize things as suggested by ChrisDavid Greene2009-08-051-2/+16
| | | | | | and eliminate complexity. Yay! llvm-svn: 78243
* remove the 'DataSectionStartSuffix' and 'TextSectionStartSuffix' knobs.Chris Lattner2009-08-051-15/+13
| | | | llvm-svn: 78242
* Rename a variable to make MSVC happy.Benjamin Kramer2009-08-051-3/+3
| | | | llvm-svn: 78202
* Disable stack coloring with register for now. It's not able to set kill markers.Evan Cheng2009-08-051-1/+3
| | | | llvm-svn: 78179
* Another nasty coalescer bug (is there another kind):Evan Cheng2009-08-051-5/+19
| | | | | | | | | | | | | | | | 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. llvm-svn: 78178
* Remove accidental commited commentBruno Cardoso Lopes2009-08-051-2/+0
| | | | llvm-svn: 78177
* - Remove custom handling of jumptables by the elf writter (this wasBruno Cardoso Lopes2009-08-055-108/+206
| | | | | | | | | | | | 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 llvm-svn: 78176
* add a temporary hook to allow reuse of the asmprinter from the disassembler.Chris Lattner2009-08-051-0/+3
| | | | llvm-svn: 78154
* Turn some insert_subreg, extract_subreg, subreg_to_reg into implicit_defs.Evan Cheng2009-08-052-5/+28
| | | | llvm-svn: 78151
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