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2011-07-26Add obvious missing case to switch. PR10497.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136130 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-25Initial implementation of 'fence' instruction, the new C++0x-style ↵Eli Friedman
replacement for llvm.memory.barrier. This is just a LangRef entry and reading/writing/memory representation; optimizer+codegen support coming soon. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136009 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-25Make sure this DAGCombine actually returns an UNDEF of the correct type; ↵Eli Friedman
PR10476. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135993 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-20PR10421: Fix a straightforward bug in the widening logic for CONCAT_VECTORS.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135595 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-19Revert r135423.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135454 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-18Add APInt(numBits, ArrayRef<uint64_t> bigVal) constructor to prevent future ↵Jeffrey Yasskin
ambiguity errors like the one corrected by r135261. Migrate all LLVM callers of the old constructor to the new one. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135431 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-18During bottom up fast-isel, instructions emitted to materalize registers are ↵Devang Patel
at top of basic block and do not have debug location. This may misguide debugger while entering the basic block and sometimes debugger provides semi useful view of current location to developer by picking up previous known location as current location. Assign a sensible location to the first instruction in a basic block, if it does not have one location derived from source file, so that debugger can provide meaningful user experience to developers in edge cases. [take 2] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135423 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-18land David Blaikie's patch to de-constify Type, with a few tweaks.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135375 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-17Minor code cleanupsNadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135362 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-15LegalizeDAG doesn't need its own copy of this enum.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135320 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-15Delete LegalizeDAG's own version of isTypeLegal and getTypeActionDan Gohman
and just use the ones from TargetLowering directly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135318 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-15Delete an unused variable and a redundant assert.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135311 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-15Modernize comments.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135305 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-14Check register class matching instead of width of type matchingEric Christopher
when determining validity of matching constraint. Allow i1 types access to the GR8 reg class for x86. Fixes PR10352 and rdar://9777108 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135180 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-14[VECTOR-SELECT]Nadav Rotem
During type legalization we often use the SIGN_EXTEND_INREG SDNode. When this SDNode is legalized during the LegalizeVector phase, it is scalarized because non-simple types are automatically marked to be expanded. In this patch we add support for lowering SIGN_EXTEND_INREG manually. This fixes CodeGen/X86/vec_sext.ll when running with the '-promote-elements' flag. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135144 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-14Add assertion for the chain value typeNadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135143 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-14Don't emit a bit test if there is only one case the test can yield false. A ↵Benjamin Kramer
simple SETNE is sufficient. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135126 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-14Add a dag combine pattern for folding C2-(A+C1) -> (C2-C1)-AEric Christopher
Fixes rdar://9761830 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135123 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-13Convert InsertValueInst and ExtractValueInst APIs to use ArrayRef.Jay Foad
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135040 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-08Add an intrinsic and codegen support for fused multiply-accumulate. The intentCameron Zwarich
is to use this for architectures that have a native FMA instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134742 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-08Apparently we can't expect a BinaryOperator here.Benjamin Kramer
Should fix llvm-gcc selfhost. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134699 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-08Emit a more efficient magic number multiplication for exact sdivs.Benjamin Kramer
We have to do this in DAGBuilder instead of DAGCombiner, because the exact bit is lost after building. struct foo { char x[24]; }; long bar(struct foo *a, struct foo *b) { return a-b; } is now compiled into movl 4(%esp), %eax subl 8(%esp), %eax sarl $3, %eax imull $-1431655765, %eax, %eax instead of movl 4(%esp), %eax subl 8(%esp), %eax movl $715827883, %ecx imull %ecx movl %edx, %eax shrl $31, %eax sarl $2, %edx addl %eax, %edx movl %edx, %eax git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134695 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-07Remove a FIXME. All of the standard ones are in the list.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134647 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-07Add functions 'hasPredecessor' and 'hasPredecessorHelper' to SDNode. TheLang Hames
hasPredecessorHelper function allows predecessors to be cached to speed up repeated invocations. This fixes PR10186. X.isPredecessorOf(Y) now just calls Y.hasPredecessor(X) Y.hasPredecessor(X) calls Y.hasPredecessorHelper(X, Visited, Worklist) with empty Visited and Worklist sets (i.e. no caching over invocations). Y.hasPredecessorHelper(X, Visited, Worklist) caches search state in Visited and Worklist to speed up repeated calls. The Visited set is searched for X before going to the worklist to further search the DAG if necessary. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134592 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-06Grammar and 80-col.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134555 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-06Introduce "expect" intrinsic instructions.Jakub Staszak
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134516 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-01Rename TargetSubtarget to TargetSubtargetInfo for consistency.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134259 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-30Remove getRegClassForInlineAsmConstraint and all dependencies.Eric Christopher
Fixes rdar://9643582 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134123 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-29Revert r133953 for now.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134116 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-29Revert a part of r126557 which could create unschedulable DAGs.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134067 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-29Sink SubtargetFeature and TargetInstrItineraries (renamed ↵Evan Cheng
MCInstrItineraries) into MC. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134049 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-28- Rename TargetInstrDesc, TargetOperandInfo to MCInstrDesc and MCOperandInfo andEvan Cheng
sink them into MC layer. - Added MCInstrInfo, which captures the tablegen generated static data. Chang TargetInstrInfo so it's based off MCInstrInfo. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134021 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-27During bottom up fast-isel, instructions emitted to materalize registers are ↵Devang Patel
at top of basic block and do not have debug location. This may misguide debugger while entering the basic block and sometimes debugger provides semi useful view of current location to developer by picking up previous known location as current location. Assign a sensible location to the first instruction in a basic block, if it does not have one location derived from source file, so that debugger can provide meaningful user experience to developers in edge cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133953 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-27More refactoring. Move getRegClass from TargetOperandInfo to TargetInstrInfo.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133944 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-27The index stored in the RegDefIter is one after the current index. When ↵Owen Anderson
getting the index, decrement it so that it points to the current element. Fixes an off-by-one bug encountered when trying to make use of MVT::untyped. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133923 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-27pre-RA-sched: Cleanup register pressure tracking.Andrew Trick
Removed the check that peeks past EXTRA_SUBREG, which I don't think makes sense any more. Intead treat it as a normal register def. No significant affect on x86 or ARM benchmarks. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133917 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-27Distinguish early clobber output operands from clobbered registers.Jakob Stoklund Olesen
Both become <earlyclobber> defs on the INLINEASM MachineInstr, but we now use two different asm operand kinds. The new Kind_Clobber is treated identically to the old Kind_RegDefEarlyClobber for now, but x87 floating point stack inline assembly does care about the difference. This will pop a register off the stack: asm("fstp %st" : : "t"(x) : "st"); While this will pop the input and push an output: asm("fst %st" : "=&t"(r) : "t"(x)); We need to know if ST0 was a clobber or an output operand, and we can't depend on <dead> flags for that. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133902 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-24The scheduler needs to be aware on the existence of untyped nodes when it ↵Owen Anderson
performs type propagation for EXTRACT_SUBREG. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133838 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-24Handle debug info for i128 constants.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133821 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-22Replace the existing forms of ConstantArray::get() with a single formJay Foad
that takes an ArrayRef. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133615 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-21Fix some trailing issues from my introduction of MVT::untyped and its use ↵Owen Anderson
for REGISTER_SEQUENCE. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133567 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-21Teach dag combine to match halfword byteswap patterns.Evan Cheng
1. (((x) & 0xFF00) >> 8) | (((x) & 0x00FF) << 8) => (bswap x) >> 16 2. ((x&0xff)<<8)|((x&0xff00)>>8)|((x&0xff000000)>>8)|((x&0x00ff0000)<<8)) => (rotl (bswap x) 16) This allows us to eliminate most of the def : Pat patterns for ARM rev16 revsh instructions. It catches many more cases for ARM and x86. rdar://9609108 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133503 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-20Fix PromoteIntRes_TRUNCATE: Add support for cases where theNadav Rotem
source vector type is to be split while the target vector is to be promoted. (eg: <4 x i64> -> <4 x i8> ) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133424 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-19Code cleanups: Remove duplicated logic in PromotInteRes_BITCAST, reserve ↵Nadav Rotem
vector space, reuse types. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133389 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-19Calls to AssertZext and getZeroExtendInReg must be made using scalar types.Nadav Rotem
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133388 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-19When promoting the vector elements in CopyToParts, use vector truncNadav Rotem
instead of scalarizing, and doing an element-by-element truncat. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133382 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-18Don't allocate empty read-only SmallVectors during SelectionDAG deallocation.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133348 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-18Remove unused but set variables.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133347 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-18Fix UMULO support for 2x register width to allow the fullEric Christopher
range without a libcall to a new mulo<mode> libcall that we'd have to create. Finishes the rest of rdar://9090077 and rdar://9210061 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133318 91177308-0d34-0410-b5e6-96231b3b80d8
2011-06-17Fix comment.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133307 91177308-0d34-0410-b5e6-96231b3b80d8
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