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2012-07-06teach instcombine to remove allocated buffers even if there are stores, ↵Nuno Lopes
memcpy/memmove/memset, and objectsize users. This means we can do cheap DSE for heap memory. Nothing is done if the pointer excapes or has a load. The churn in the tests is mostly due to objectsize, since we want to make sure we don't delete the malloc call before evaluating the objectsize (otherwise it becomes -1/0) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159876 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-06Check if it's a scope last, because several things are scopes.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159873 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-06ARM: Add test cleanup entry to the README.Jim Grosbach
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159864 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-06revert r159851.Akira Hatanaka
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159854 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-06Reapply r158846.Akira Hatanaka
Include file MipsGenRegisterInfo.inc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159851 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-06Add a print method to the ObjC property object.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159848 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-06Remove trailing comma in array initialization list.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159843 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-06Remove unnecessary 'llvm::'.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159842 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-06Remove unnecessary 'llvm::'.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159841 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-06Whitespace.Chad Rosier
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159839 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-06X86: peephole optimization to remove cmp instructionManman Ren
For each Cmp, we check whether there is an earlier Sub which make Cmp redundant. We handle the case where SUB operates on the same source operands as Cmp, including the case where the two source operands are swapped. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159838 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-06[fast-isel] Tell fast-isel to do nothing with the new donothing intrinsic.Chad Rosier
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159837 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-06Revert r159804, "[arm-fast-isel] Add support for vararg function calls."NAKAMURA Takumi
It broke LLVM :: CodeGen/Thumb2/large-call.ll on several hosts. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159817 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-06Fix PR13202 and a regtest.Alexey Samsonov
DwarfDebug class could generate the same (inlined) DIVariable twice: 1) when trying to find abstract debug variable for a concrete inlined instance. 2) when explicitly collecting info for variables that were optimized out. This change makes sure that this duplication won't happen and makes Clang pass "gdb.opt/inline-locals" test from gdb testsuite. Reviewed by Eric Christopher. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159811 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-06[arm-fast-isel] Add support for vararg function calls.Jush Lu
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159804 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-06 Changes per review of commit 159787Jack Carter
Mips specific inline asm operand modifier D. Comment changes and predicate change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159802 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-06Untabify and move a function near similar functions dealing with structEric Christopher
types. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159801 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-06Add some comments suggested in code review.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159800 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-05 Mips specific inline asm operand modifier D.Jack Carter
Print the second half of a double word operand. The include list was cleaned up a bit as well. Also the test case was modified to test for both big and little patterns. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159787 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-05Enclose instruction rdhwr with directives, which are needed when target isAkira Hatanaka
mips32 rev1 (the directives are emitted when target is mips32r2 too). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159770 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-05Enable target dependent directive parsing to hook before standard parser inAkira Hatanaka
AsmParser::ParseStatement. Patch by Vladimir Medic. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159768 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-05Optimize extendIntervalEndTo a tiny bit by saving one call through theChandler Carruth
vector erase. No functionality changed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159746 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-05Finish fixing the MachineOperand hashing, providing a nice modernChandler Carruth
hash_value overload for MachineOperands. This addresses a FIXME sufficient for me to remove it, and cleans up the code nicely too. The important changes to the hashing logic: - TargetFlags are now included in all of the hashes. These were complete missed. - Register operands have their subregisters and whether they are a def included in the hash. - We now actually hash all of the operand types. Previously, many operand types were simply *dropped on the floor*. For example: - Floating point immediates - Large integer immediates (>64-bit) - External globals! - Register masks - Metadata operands - It removes the offset from the block-address hash; I'm a bit suspicious of this, but isIdenticalTo doesn't consider the offset for black addresses. Any patterns involving these entities could have triggered extreme slowdowns in MachineCSE or PHIElimination. Let me know if there are PRs you think might be closed now... I'm looking myself, but I may miss them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159743 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-05All cases are covered, no need for a default. This deals with theDuncan Sands
corresponding clang warning. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159742 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-05The hash function for MI expressions, used by MachineCSE, is reallyChandler Carruth
broken. This patch fixes the superficial problems which lead to the intractably slow compile times reported in PR13225. The specific issue is that we were failing to include the *offset* of a global variable in the hash code. Oops. This would in turn cause all MIs which were only distinguishable due to operating on different offsets of a global variable to produce identical hash functions. In some of the test cases attached to the PR I saw hash table activity where there were O(1000) probes-per-lookup *on average*. A very few entries were responsible for most of these probes. There is still quite a bit more to do here. The ad-hoc layering of data in MachineOperands makes them *extremely* brittle to hash correctly. We're missing quite a few other cases, the only ones I've fixed here are the specific MO types which were allowed through the assert() in getOffset(). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159741 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-05Use the right kind of booleans: we were emitting 0/1 booleans, instead of 0/-1Duncan Sands
booleans. Patch by James Benton. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159739 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-05[tsan] fix compile-time falilure found while building Chromium with tsan ↵Kostya Serebryany
(tsan issue #3). A unit test will follow separately. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159736 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-05Remove ParentMap. You can just ask the domnode for its parent. No functionalityNick Lewycky
change. Move the "Not profitable, avoid CSE!" debug message next to where we fail the check for profitability and use a different message for avoiding CSE due to being in different register classes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159729 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-04Make X86 call and return instructions non-variadic.Jakob Stoklund Olesen
Function argument and return value registers aren't part of the encoding, so they should be implicit operands. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159728 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-04Allow trailing physreg RegisterSDNode operands on non-variadic instructions.Jakob Stoklund Olesen
Also allow trailing register mask operands on non-variadic both MachineSDNodes and MachineInstrs. The extra physreg RegisterSDNode operands are added to the MI as <imp-use> operands. This makes it possible to have non-variadic call instructions. Call and return instructions really are non-variadic, the argument registers should only be used implicitly - they are not part of the encoding. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159727 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-04Print SlotIndexes when available for -print-machineinstrs.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159726 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-04Allow multiple terminators to read virtual registers.Jakob Stoklund Olesen
Find the kill as the last terminator to read SrcReg. Patch by Philipp Brüschweiler! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159722 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-04Ensure CopyToReg nodes are always glued to the call instruction.Jakob Stoklund Olesen
The CopyToReg nodes that set up the argument registers before a call must be glued to the call instruction. Otherwise, the scheduler may emit the physreg copies long before the call, causing long live ranges for the fixed registers. Besides disabling good register allocation, that can also expose problems when EmitInstrWithCustomInserter() splits a basic block during the live range of a physreg. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159721 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-04Make sure -print-machineinstrs applies to the first pass as well.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159720 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-04Fix a bug in DebugInfo lib, extend a comment for one of the methodsAlexey Samsonov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159707 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-04Reverted r156659, due to probable performance regressions, DenseMap should ↵Stepan Dyatkovskiy
be used here: IntegersSubsetMapping - Replaced type of Items field from std::list with std::map. In neares future I'll test it with DenseMap and do the correspond replacement if possible. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159703 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-04Reduce some code duplication.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159701 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-04Fix some ascii art in a comment to not have trailing backslashes (inspirationMatt Beaumont-Gay
from IfConversion.cc), and fix some spelling and grammar in the surrounding prose. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159699 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-04Add early if-conversion support to X86.Jakob Stoklund Olesen
Implement the TII hooks needed by EarlyIfConversion to create cmov instructions and estimate their latency. Early if-conversion is still not enabled by default. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159695 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-04Add an experimental early if-conversion pass, off by default.Jakob Stoklund Olesen
This pass performs if-conversion on SSA form machine code by speculatively executing both sides of the branch and using a cmov instruction to select the result. This can help lower the number of branch mispredictions on architectures like x86 that don't have predicable instructions. The current implementation is very aggressive, and causes regressions on mosts tests. It needs good heuristics that have yet to be implemented. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159694 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-03PHINode::hasConstantValue(): return undef if the PHI is fully recursive.Nuno Lopes
Thanks Duncan for the idea git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159687 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-03Use the DebugInfo's 'print()' method to emit the comments.Bill Wendling
These give quite a bit more information about the DebugInfo and makes it more readable. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159680 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-03BoundsChecking: optimize out the check for offset < 0 if size is known to ↵Nuno Lopes
be >= 0 (signed). (LLVM optimizers cannot do this optimization by themselves) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159668 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-03fold PHI nodes in SizeOffsetEvaluator whenever possible.Nuno Lopes
Unfortunately this change requires the cache map to hold WeakVHs instead git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159667 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-03improve PHINode::hasConstantValue() to detect recursive cases like %phi = ↵Nuno Lopes
phi(%phi,42) as constant git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159666 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-03Part of r159527. Splitted into series of patches and gone with fixed PR13256:Stepan Dyatkovskiy
IntegersSubsetMapping - Replaced type of Items field from std::list with std::map. In neares future I'll test it with DenseMap and do the correspond replacement if possible. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159659 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-03Remove extra space.Craig Topper
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159647 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-03Change i128mem/i256mem to f128mem/f256mem on some floating point vector ↵Craig Topper
instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159646 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-03MCContext.cpp: Fixup for my odd previous commit. No functional changes.NAKAMURA Takumi
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159645 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-03Add aliases for pblendvb, blendvpd, and blendvps instructions with the ↵Craig Topper
implicit xmm0 operand specified. Fixes PR13252. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159644 91177308-0d34-0410-b5e6-96231b3b80d8
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