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2012-04-05Don't break the IV update in TLI::SimplifySetCC().Jakob Stoklund Olesen
LSR always tries to make the ICmp in the loop latch use the incremented induction variable. This allows the induction variable to be kept in a single register. When the induction variable limit is equal to the stride, SimplifySetCC() would break LSR's hard work by transforming: (icmp (add iv, stride), stride) --> (cmp iv, 0) This forced us to use lea for the IC update, preventing the simpler incl+cmp. <rdar://problem/7643606> <rdar://problem/11184260> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154119 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-05Treat f16 the same as f80/f128 for the purposes of generating constants ↵Owen Anderson
during instruction selection. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154113 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-04REG_SEQUENCE expansion to COPY instructions wasn't taking account of sub ↵Pete Cooper
register indices on the source registers. No simple test case git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154051 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-04f16 FREM can now be legalized by promoting to f32Pete Cooper
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154039 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-04Remove spurious debug output.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154032 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-04Always compute all the bits in ComputeMaskedBits.Rafael Espindola
This allows us to keep passing reduced masks to SimplifyDemandedBits, but know about all the bits if SimplifyDemandedBits fails. This allows instcombine to simplify cases like the one in the included testcase. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154011 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-04Remove default case from switch that was already covering all cases.Craig Topper
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153996 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-04Removed useless switch for default case when switch was covering all the ↵Pete Cooper
enum values git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153984 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-03Add VSELECT to LegalizeVectorTypes::ScalariseVectorResult. Previously it ↵Pete Cooper
would crash if it encountered a 1 element VSELECT. Solution is slightly more complicated than just creating a SELET as we have to mask or sign extend the vector condition if it had different boolean contents from the scalar condition. Fixes <rdar://problem/11178095> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153976 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-03Removed one last bad continue statement meant to be removed in r153914.Pete Cooper
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153975 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-03Fix an issue in SimplifySetCC() specific to vector comparisons.Chad Rosier
When folding X == X we need to check getBooleanContents() to determine if the result is a vector of ones or a vector of negative ones. I tried creating a test case, but the problem seems to only be exposed on a much older version of clang (around r144500). rdar://10923049 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153966 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-03Fix thinko check for number of operands to be the one that actuallyEric Christopher
might have more than 19 operands. Add a testcase to make sure I never screw that up again. Part of rdar://11026482 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153961 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-03Add a line number for the scope of the function (starting at the firstEric Christopher
brace) so that we get more accurate line number information about the declaration of a given function and the line where the function first starts. Part of rdar://11026482 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153916 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-03Fixes to r153903. Added missing explanation of behaviour when the ↵Pete Cooper
VirtRegMap is NULL. Also changed it in this case to just avoid updating the map, but live ranges or intervals will still get updated and created git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153914 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-02Moved LiveRangeEdit.h so that it can be called from other parts of the ↵Pete Cooper
backend, not just libCodeGen git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153906 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-02Allocate virtual registers in ascending order.Jakob Stoklund Olesen
This is just the fallback tie-breaker ordering, the main allocation order is still descending size. Patch by Shamil Kurmangaleev! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153904 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-02Refactored the LiveRangeEdit interface so that MachineFunction, ↵Pete Cooper
TargetInstrInfo, MachineRegisterInfo, LiveIntervals, and VirtRegMap are all passed into the constructor and stored as members instead of passed in to each method. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153903 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-02Add predicates for checking whether targets have free FNEG and FABS ↵Owen Anderson
operations, and prevent the DAGCombiner from turning them into bitwise operations if they do. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153901 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-02During two-address lowering, rescheduling an instruction does not untieLang Hames
operands. Make TryInstructionTransform return false to reflect this. Fixes PR11861. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153892 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-02Turn on the accelerator tables for Darwin.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153880 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-02Optimizing swizzles of complex shuffles may generate additional complex ↵Nadav Rotem
shuffles. Do not try to optimize swizzles of shuffles if the source shuffle has more than a single user, except when the source shuffle is also a swizzle. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153864 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-02Make MCInstrInfo available to the MCInstPrinter. This will be used to remove ↵Craig Topper
getInstructionName and the static data it contains since the same tables are already in MCInstrInfo. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153860 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-01This commit contains a few changes that had to go in together.Nadav Rotem
1. Simplify xor/and/or (bitcast(A), bitcast(B)) -> bitcast(op (A,B)) (and also scalar_to_vector). 2. Xor/and/or are indifferent to the swizzle operation (shuffle of one src). Simplify xor/and/or (shuff(A), shuff(B)) -> shuff(op (A, B)) 3. Optimize swizzles of shuffles: shuff(shuff(x, y), undef) -> shuff(x, y). 4. Fix an X86ISelLowering optimization which was very bitcast-sensitive. Code which was previously compiled to this: movd (%rsi), %xmm0 movdqa .LCPI0_0(%rip), %xmm2 pshufb %xmm2, %xmm0 movd (%rdi), %xmm1 pshufb %xmm2, %xmm1 pxor %xmm0, %xmm1 pshufb .LCPI0_1(%rip), %xmm1 movd %xmm1, (%rdi) ret Now compiles to this: movl (%rsi), %eax xorl %eax, (%rdi) ret git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153848 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-01Fix typo.Lang Hames
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153846 91177308-0d34-0410-b5e6-96231b3b80d8
2012-04-01misched: Add finalizeScheduler to complete the target interface.Andrew Trick
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153827 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-31Teach CodeGen's version of computeMaskedBits to understand the range metadata.Rafael Espindola
This is the CodeGen equivalent of r153747. I tested that there is not noticeable performance difference with any combination of -O0/-O2 /-g when compiling gcc as a single compilation unit. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153817 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-30If we have a VLA that has a "use" in a metadata node that's then usedBill Wendling
here but it has no other uses, then we have a problem. E.g., int foo (const int *x) { char a[*x]; return 0; } If we assign 'a' a vreg and fast isel later on has to use the selection DAG isel, it will want to copy the value to the vreg. However, there are no uses, which goes counter to what selection DAG isel expects. <rdar://problem/11134152> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153705 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-29Add support for objc property decls according to the page at:Eric Christopher
http://llvm.org/docs/SourceLevelDebugging.html#objcproperty including type and DECL. Expand the metadata needed accordingly. rdar://11144023 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153639 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-28Enable machine code verification in the entire code generator.Jakob Stoklund Olesen
Some targets still mess up the liveness information, but that isn't verified after MRI->invalidateLiveness(). The verifier can still check other useful things like register classes and CFG, so it should be enabled after all passes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153615 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-28Enable machine code verification after PreSched2 passes.Jakob Stoklund Olesen
The late scheduler depends on accurate liveness information if it is breaking anti-dependencies, so we should be able to verify it. Relax the terminator checking in the machine code verifier so it can handle the basic blocks created by if conversion. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153614 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-28Also verify after ExpandPostRAPseudos.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153599 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-28Enable machine code verification after the late machine optimization passes.Jakob Stoklund Olesen
Branch folding invalidates liveness and disables liveness verification on some targets. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153597 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-28Skip liveness verification when MRI->tracksLiveness() is false.Jakob Stoklund Olesen
Extract the liveness verification into its own method. This makes it possible to run the machine code verifier after liveness information is no longer required to be valid. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153596 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-28Allow removeLiveIn to be called with a register that isn't live-in.Jakob Stoklund Olesen
This avoids the silly double search: if (isLiveIn(Reg)) removeLiveIn(Reg); git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153592 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-28Fixed commuteInstructions bug where if its called pre-regalloc the subreg ↵Pete Cooper
indices weren't commuted git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153579 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-28More debug output.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153571 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-28Fix the output of the DW_TAG_friend tag to include DW_AT_friendEric Christopher
and not the rest of the member tag. Fixes PR11695 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153570 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-27Use a SmallVector and linear lookup instead of a DenseSet - SourceMap valuesLang Hames
will always be tiny sets, so DenseSet is overkill (SmallSet won't work as we need iteration support). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153529 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-27Use DW_AT_low_pc for a single entry point into a routine.Eric Christopher
Fixes PR10105 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153524 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-27Print SSA and liveness tracking flags in MF::print().Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153518 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-27Branch folding may invalidate liveness.Jakob Stoklund Olesen
Branch folding can use a register scavenger to update liveness information when required. Don't do that if liveness information is already invalid. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153517 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-27fix what looks like a real logic bug, found by PVS-Studio (part of PR12357)Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153513 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-27Add an MRI::tracksLiveness() flag.Jakob Stoklund Olesen
Late optimization passes like branch folding and tail duplication can transform the machine code in a way that makes it expensive to keep the register liveness information up to date. There is a fuzzy line between register allocation and late scheduling where the liveness information degrades. The MRI::tracksLiveness() flag makes the line clear: While true, liveness information is accurate, and can be used for register scavenging. Once the flag is false, liveness information is not accurate, and can only be used as a hint. Late passes generally don't need the liveness information, but they will sometimes use the register scavenger to help update it. The scavenger enforces strict correctness, and we have to spend a lot of code to update register liveness that may never be used. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153511 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-27Post-ra LICM should take care not to hoist an instruction that would clobber aEvan Cheng
register that's read by the preheader terminator. rdar://11095580 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153492 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-27During MachineCopyPropagation a register may be the source operand of multipleLang Hames
copies being considered for removal. Make sure to track all of the copies, rather than just the most recent encountered, by holding a DenseSet instead of an unsigned in SrcMap. No test case - couldn't reduce something with a sane size. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153487 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-26Add a debug option to dump PBQP graphs during register allocation.Lang Hames
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153483 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-26Use the file in the inlined die rather than the compile unit forEric Christopher
backtrace locations. Testcase forthcoming, but I wanted to get some testing here. Should fix: PR12323 PR12314 rdar://11091100 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153471 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-26No need to do an expensive stable sort for a bunch of integers.Benjamin Kramer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153438 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-26Prune some includes and forward declarations.Craig Topper
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153429 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-26Add a debug statement.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153428 91177308-0d34-0410-b5e6-96231b3b80d8
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