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2010-02-24add node #'s to debug dumps.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97019 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-24Re-apply 96540 and 96556 with fixes.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97011 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23make selectnodeto set the nodeid to -1. This makes it more akin toChris Lattner
creating a new node then replacing uses. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97000 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23Remember to handle sub-registers when moving imp-defs to a rematted instruction.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96995 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23Keep track of phi join registers explicitly in LiveVariables.Jakob Stoklund Olesen
Previously, LiveIntervalAnalysis would infer phi joins by looking for multiply defined registers. That doesn't work if the phi join is implicitly defined in all but one of the predecessors. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96994 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23fix a bug in findNonImmUse (used by IsLegalToFold) where nodes withChris Lattner
no id's would cause early exit allowing IsLegalToFold to return true instead of false, producing a cyclic dag. This was striking the new isel because it isn't using SelectNodeTo yet, which theoretically is just an optimization. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96972 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23Print node ID's in dumps and views if set.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96971 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23use OutStreamer.EmitCodeAlignment for alignment in the textChris Lattner
segment. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96967 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23Speed up cycle checking significantly by caching results.David Greene
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96956 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23Dead code eliminationJakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96837 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-22Updated version of r96634 (which was reverted due to failing 176.gcc andJim Grosbach
126.gcc nightly tests. These failures uncovered latent bugs that machine DCE could remove one half of a stack adjust down/up pair, causing PEI to assert. This update fixes that, and the tests now pass. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96822 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-22Fix various doxygen warnings.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96779 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-21It turned out that we failed to emit proper symbol stubs on non-x86/darwin ↵Anton Korobeynikov
for ages (we emitted a reference to a stub, but no stub was emitted). The code inside x86-32/macho target objfile lowering should actually be the generic one - move it there. This (I really, really hope) should fix EH issues on ppc/darwin and arm/darwin. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96755 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-21Enable assertion to detect cyclic valno references.Jakob Stoklund Olesen
This changes the stack overflow in PR6363 to an assertion failure. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96744 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-19Revert 96634. It causes assertion failures for 126.gcc and 176.gcc inBob Wilson
the armv6 nightly tests. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96691 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-19Add support for the 'alignstack' attribute to the x86 backend. Fixes PR5254.Charles Davis
Also, FileCheck'ize a test. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96686 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-19Revert Anton's most recent EH patch (r96637), since it breaks a lot ofBob Wilson
ARM and Thumb tests. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96680 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-19Revert commits 96556 and 96640, because commit 96556 breaks theDuncan Sands
dragonegg self-host build. I reverted 96640 in order to revert 96556 (96640 goes on top of 96556), but it also looks like with both of them applied the breakage happens even earlier. The symptom of the 96556 miscompile is the following crash: llvm[3]: Compiling AlphaISelLowering.cpp for Release build cc1plus: /home/duncan/tmp/tmp/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp:4982: void llvm::SelectionDAG::ReplaceAllUsesWith(llvm::SDNode*, llvm::SDNode*, llvm::SelectionDAG::DAGUpdateListener*): Assertion `(!From->hasAnyUseOfValue(i) || From->getValueType(i) == To->getValueType(i)) && "Cannot use this version of ReplaceAllUsesWith!"' failed. Stack dump: 0. Running pass 'X86 DAG->DAG Instruction Selection' on function '@_ZN4llvm19AlphaTargetLowering14LowerOperationENS_7SDValueERNS_12SelectionDAGE' g++: Internal error: Aborted (program cc1plus) This occurs when building LLVM using LLVM built by LLVM (via dragonegg). Probably LLVM has miscompiled itself, though it may have miscompiled GCC and/or dragonegg itself: at this point of the self-host build, all of GCC, LLVM and dragonegg were built using LLVM. Unfortunately this kind of thing is extremely hard to debug, and while I did rummage around a bit I didn't find any smoking guns, aka obviously miscompiled code. Found by bisection. r96556 | evancheng | 2010-02-18 03:13:50 +0100 (Thu, 18 Feb 2010) | 5 lines Some dag combiner goodness: Transform br (xor (x, y)) -> br (x != y) Transform br (xor (xor (x,y), 1)) -> br (x == y) Also normalize (and (X, 1) == / != 1 -> (and (X, 1)) != / == 0 to match to "test on x86" and "tst on arm" r96640 | evancheng | 2010-02-19 01:34:39 +0100 (Fri, 19 Feb 2010) | 16 lines Transform (xor (setcc), (setcc)) == / != 1 to (xor (setcc), (setcc)) != / == 1. e.g. On x86_64 %0 = icmp eq i32 %x, 0 %1 = icmp eq i32 %y, 0 %2 = xor i1 %1, %0 br i1 %2, label %bb, label %return => testl %edi, %edi sete %al testl %esi, %esi sete %cl cmpb %al, %cl je LBB1_2 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96672 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-19Transform (xor (setcc), (setcc)) == / != 1 toEvan Cheng
(xor (setcc), (setcc)) != / == 1. e.g. On x86_64 %0 = icmp eq i32 %x, 0 %1 = icmp eq i32 %y, 0 %2 = xor i1 %1, %0 br i1 %2, label %bb, label %return => testl %edi, %edi sete %al testl %esi, %esi sete %cl cmpb %al, %cl je LBB1_2 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96640 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-19Use the same encoding for EH stuff uniformly on all MachO targets.Anton Korobeynikov
This hopefulyl should unbreak EH on PPC/Darwin. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96637 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-19Radar 7636153. In the presence of large call frames, it's not sufficientJim Grosbach
for ARM to just check if a function has a FP to determine if it's safe to simplify the stack adjustment pseudo ops prior to eliminating frame indices. Allow targets to override the default behavior and does so for ARM and Thumb2. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96634 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-18Always normalize spill weights, also for intervals created by spilling.Jakob Stoklund Olesen
Moderate the weight given to very small intervals. The spill weight given to new intervals created when spilling was not normalized in the same way as the original spill weights calculated by CalcSpillWeights. That meant that restored registers would tend to hang around because they had a much higher spill weight that unspilled registers. This improves the runtime of a few tests by up to 10%, and there are no significant regressions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96613 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-18Make CodePlacementOpt detect special EH control flow byDan Gohman
checking whether AnalyzeBranch disagrees with the CFG directly, rather than looking for EH_LABEL instructions. EH_LABEL instructions aren't always at the end of the block, due to FP_REG_KILL and other things. This fixes an infinite loop compiling MultiSource/Benchmarks/Bullet. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96611 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-18Uniformize the way these options are printed. Requested byDuncan Sands
Russell Wallace. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96580 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-18Remove terminating dot in description. Inconsistency pointedDuncan Sands
out by Russell Wallace. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96579 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-18Some dag combiner goodness:Evan Cheng
Transform br (xor (x, y)) -> br (x != y) Transform br (xor (xor (x,y), 1)) -> br (x == y) Also normalize (and (X, 1) == / != 1 -> (and (X, 1)) != / == 0 to match to "test on x86" and "tst on arm" git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96556 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-17Make the non-temporal bit "significant" in MemSDNodes so they aren'tDavid Greene
CSE'd or otherwise combined with temporal MemSDNodes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96505 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-17Dead code elimination.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96496 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-17move isOnlyReachableByFallthrough out of MachineBasicBlock into AsmPrinter,Chris Lattner
and add a sparc implementation that knows about delay slots. Patch by Nathan Keynes! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96492 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-17sink special case "cannotyetselect" for intrinsics out of the Chris Lattner
tblgen splatted code into the implementation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96460 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-17Removed an early out which was causing the PBQP allocator to not compute ↵Lang Hames
live-in sets or run the rewriter. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96450 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-17Before setting scope end marker, pay attention to scope begin marker and ↵Devang Patel
existing scope end marker, if any. Scope must begin before it ends and nested inlined scope do not truncate surrounding scope. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96445 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-16There are two ways of checking for a given type, for example isa<PointerType>(T)Duncan Sands
and T->isPointerTy(). Convert most instances of the first form to the second form. Requested by Chris. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96344 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-16Handle DBG_VALUE mixed with labels when doing PHIDale Johannesen
elimination. Before a DBG_VALUE could affect codegen. The solution here is imperfect and not final. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96318 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-16Reapply 96294; now that I've gotten around to lookingDale Johannesen
at older buildbot messages, I see the failure predates this patch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96307 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-16Something broke. Hard to believe it was this patchDale Johannesen
but it's harder to believe it's the other candidate, so reverting. Temporarily I hope. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96303 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-15Fix a memory leak. Patch by Nicolas Geoffray.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96295 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-15More handling of DBG_VALUE.Dale Johannesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96294 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-15Add missed entry to cmake build list fileAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96292 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-15Use ttype encoding consistentlyAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96290 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-15Move TLOF implementations to libCodegen to resolve layering violation.Anton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96288 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-15It turns out that we emitted completely wrong common EH frame since the ↵Anton Korobeynikov
early beginning! The "z" CIE augmentation mark indicates that there is an extra word containing the size of augmentation section. However, even for frames w/o any augmentation data we emitted size uleb! (this is the case of "unwinding through C code"). Thus frame moves information was emitterd completely wrong. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96287 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-15Preliminary patch to improve dwarf EH generation - Hooks to return ↵Anton Korobeynikov
Personality / FDE / LSDA / TType encoding depending on target / options (e.g. code model / relocation model) - MCIzation of Dwarf EH printer to use encoding information - Stub generation for ELF target (needed for indirect references) - Some other small changes here and there git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96285 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-15Fix PR6300.Jakob Stoklund Olesen
A virtual register can be used before it is defined in the same MBB if the MBB is part of a loop. Teach the implicit-def pass about this case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96279 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-15Split SelectionDAGISel::IsLegalAndProfitableToFold toEvan Cheng
IsLegalToFold and IsProfitableToFold. The generic version of the later simply checks whether the folding candidate has a single use. This allows the target isel routines more flexibility in deciding whether folding makes sense. The specific case we are interested in is folding constant pool loads with multiple uses. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96255 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-15Add non-temporal flags and remove an assumption of default arguments.David Greene
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96240 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-15Add non-temporal flags to MachineMemOperand.David Greene
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96226 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-15Uniformize the names of type predicates: rather than having isFloatTy andDuncan Sands
isInteger, we now have isFloatTy and isIntegerTy. Requested by Chris! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96223 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-15Ignore DBG_VALUE in a couple more places.Dale Johannesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96207 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-13Fix PR6283.Jakob Stoklund Olesen
When coalescing with a physreg, remember to add imp-def and imp-kill when dealing with sub-registers. Also fix a related bug in VirtRegRewriter where substitutePhysReg may reallocate the operand list on an instruction and invalidate the reg_iterator. This can happen when a register is mentioned twice on the same instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96072 91177308-0d34-0410-b5e6-96231b3b80d8
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