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2013-03-14[fast-isel] The X86FastISel::FastLowerArguments function doesn't properly handleChad Rosier
the win64 calling convention. rdar://13423768 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177113 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14Move estimateStackSize from ARM into MachineFrameInfoHal Finkel
This is a generic function (derived from PEI); moving it into MachineFrameInfo eliminates a current redundancy between the ARM and AArch64 backends, and will allow it to be used by the PowerPC target code. No functionality change intended. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177111 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14Provide the register scavenger to processFunctionBeforeFrameFinalizedHal Finkel
Add the current PEI register scavenger as a parameter to the processFunctionBeforeFrameFinalized callback. This change is necessary in order to allow the PowerPC target code to set the register scavenger frame index after the save-area offset adjustments performed by processFunctionBeforeFrameFinalized. Only after these adjustments have been made is it possible to estimate the size of the stack frame. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177108 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14Use frame-index scavenging for PPC register spillingHal Finkel
Make requiresFrameIndexScavenging return true, and create virtual registers in the spilling code instead of using the register scavenger directly. This makes the target-level code simpler, and importantly, delays the scavenging until after callee-saved register processing (which will be important for later changes). Also cleans up trackLivenessAfterRegAlloc (makes it inline in the header with the other related functions). This makes it clear that it always returns true. No functionality change intended. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177107 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14Not all PPC functions with a frame pointer need a RS spill slotHal Finkel
We used to add a spill slot for the register scavenger whenever the function has a frame pointer. This is unnecessarily conservative: We may need the spill slot for dynamic stack allocations, and functions with dynamic stack allocations always have a FP, but we might also have a FP for other reasons (such as the user explicitly disabling frame-pointer elimination), and we don't necessarily need a spill slot for those functions. The structsinregs test needed adjustment because it disables FP elimination. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177106 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14ARM cost model: Increase cost of some vector selects we do terrible onArnold Schwaighofer
By terrible I mean we store/load from the stack. This matters on PAQp8 in _Z5trainPsS_ii (which is inlined into Mixer::update) where we decide to vectorize a loop with a VF of 8 resulting in a 25% degradation on a cortex-a8. LV: Found an estimated cost of 2 for VF 8 For instruction: icmp slt i32 LV: Found an estimated cost of 2 for VF 8 For instruction: select i1, i32, i32 The bug that tracks the CodeGen part is PR14868. radar://13403975 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177105 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14[mips] Fix filename in comment and delete unnecessary lines of code.Akira Hatanaka
No functionality changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177104 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14Hexagon: Removed asserts regarding alignment and offset.Jyotsna Verma
We are warning the user about the alignment, so we should not assert. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177103 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14Android uses cacheflush(long start, long end, long flags) for MIPS.Akira Hatanaka
Patch by Stephen Hines. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177101 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14LoopVectorize: Invert case when we use a vector cmp value to query select costArnold Schwaighofer
We generate a select with a vectorized condition argument when the condition is NOT loop invariant. Not the other way around. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177098 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14Add back lines which were accidentally deleted in CMakeLists.txt.Akira Hatanaka
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177096 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14[mips] Define function MipsSEDAGToDAGISel::selectAddESubE.Akira Hatanaka
No intended functionality changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177095 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14Add a comment about overlapping PPC frame offsetsHal Finkel
I don't think that it is otherwise clear how the overlapping offsets are processed into distinct spill slots. Comment that this is done in processFunctionBeforeFrameFinalized. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177094 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14[mips] Rename functions and variables to start with proper case.Akira Hatanaka
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177092 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14Add header file MipsISelDAGToDAG.h.Akira Hatanaka
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177090 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14[mips] Define two subclasses of MipsDAGToDAGISel. Mips16DAGToDAGISel is forAkira Hatanaka
mips16 and MipsSEDAGToDAGISel is for mips32/64. No functionality changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177089 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14Perform factorization as a last resort of unsafe fadd/fsub simplification.Shuxin Yang
Rules include: 1)1 x*y +/- x*z => x*(y +/- z) (the order of operands dosen't matter) 2) y/x +/- z/x => (y +/- z)/x The transformation is disabled if the new add/sub expr "y +/- z" is a denormal/naz/inifinity. rdar://12911472 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177088 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14R600: Factorize code handling Const Read Port limitationVincent Lejeune
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177078 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14[ASan] emit instrumentation for initialization order checking by defaultAlexey Samsonov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177063 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14PR14972: SROA vs. GVN exposed a really bad bug in SROA.Chandler Carruth
The fundamental problem is that SROA didn't allow for overly wide loads where the bits past the end of the alloca were masked away and the load was sufficiently aligned to ensure there is no risk of page fault, or other trapping behavior. With such widened loads, SROA would delete the load entirely rather than clamping it to the size of the alloca in order to allow mem2reg to fire. This was exposed by a test case that neatly arranged for GVN to run first, widening certain loads, followed by an inline step, and then SROA which miscompiles the code. However, I see no reason why this hasn't been plaguing us in other contexts. It seems deeply broken. Diagnosing all of the above took all of 10 minutes of debugging. The really annoying aspect is that fixing this completely breaks the pass. ;] There was an implicit reliance on the fact that no loads or stores extended past the alloca once we decided to rewrite them in the final stage of SROA. This was used to encode information about whether the loads and stores had been split across multiple partitions of the original alloca. That required threading explicit tracking of whether a *use* of a partition is split across multiple partitions. Once that was done, another problem arose: we allowed splitting of integer loads and stores iff they were loads and stores to the entire alloca. This is a really arbitrary limitation, and splitting at least some integer loads and stores is crucial to maximize promotion opportunities. My first attempt was to start removing the restriction entirely, but currently that does Very Bad Things by causing *many* common alloca patterns to be fully decomposed into i8 operations and lots of or-ing together to produce larger integers on demand. The code bloat is terrifying. That is still the right end-goal, but substantial work must be done to either merge partitions or ensure that small i8 values are eagerly merged in some other pass. Sadly, figuring all this out took essentially all the time and effort here. So the end result is that we allow splitting only when the load or store at least covers the alloca. That ensures widened loads and stores don't hurt SROA, and that we don't rampantly decompose operations more than we have previously. All of this was already fairly well tested, and so I've just updated the tests to cover the wide load behavior. I can add a test that crafts the pass ordering magic which caused the original PR, but that seems really brittle and to provide little benefit. The fundamental problem is that widened loads should Just Work. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177055 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14Fix the name of a variable to match its declaration. Fixes build failure ↵Craig Topper
from r177014. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177015 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14Fix a bug in the calculation of the VEX.B bit for FMA4 rr with the VEX.W bit ↵Craig Topper
set. The VEX.B was being calculated from the wrong operand. Fixes at least some portion of PR14185. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177014 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14Teach X86 MC instruction lowering that VMOVAPSrr and other VEX-encoded ↵Craig Topper
register to register moves should be switched from using the MRMSrcReg form to the MRMDestReg form if the source register is a 64-bit extended register and the destination register is not. This allows the instruction to be encoded using the 2-byte VEX form instead of the 3-byte VEX form. The GNU assembler has similar behavior. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177011 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14Fix PR15309Michael Liao
- Fix the typo on type checking git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177010 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14Remove accidentally committed debug line.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177005 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14Refactor GCOV's six constructor arguments into a struct with a getter thatNick Lewycky
constructs default arguments. It can now take default arguments from cl::opt'ions. Add a new -default-gcov-version=... option, and actually test it! Sink the reverse-order of the version into GCOVProfiling, hiding it from our users. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177002 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-14[Support] Fix lifetime of file descriptors when using MemoryBuffer.Michael J. Spencer
Clients of MemoryBuffer::getOpenFile expect it not to take ownership of the file descriptor passed in. So don't. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176995 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-13No functionality change. Rename emitGCNO() to the more sensibleNick Lewycky
emitProfileNotes(), similar to emitProfileArcs(). Also update its comment. Also add a comment on Version[4] (there will be another comment in clang later), and compress lines that exceeded 80 columns. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176994 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-13Reset some of the target options which affect code generation.Bill Wendling
This doesn't reset all of the target options within the TargetOptions object. This is because some of those are ABI-specific and must be determined if it's okay to change those on the fly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176986 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-13Remove the unused 4th operand for DIFile debug info metadataDavid Blaikie
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176983 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-13Add some additonal attribute helper functions. Test will be on followReed Kotler
up putback to clang for mips16. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176968 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-13R600: Remove unused Outputs variableVincent Lejeune
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176967 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-13No functionality change. Use unreachable in getCUOffset.Manman Ren
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176963 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-13No functionality change. Use unreachable in getCompileUnit.Manman Ren
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176962 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-13Check register classes also when changing them.Jakob Stoklund Olesen
We have the same assertion in createVirtualRegister. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176959 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-13Fix a performance regression when combining to smaller types in icmp (shl ↵Arnaud A. de Grandmaison
%v, C1), C2 : Only combine when the shl is only used by the icmp git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176950 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-13Add one more overload to make VS2008's debug mody happy.Benjamin Kramer
sigh. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176946 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-13[mips] Define two subclasses of MipsTargetLowering. Mips16TargetLowering is forAkira Hatanaka
mips16 and MipsSETargetLowering is for mips32/64. No functionality changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176917 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-13Refactor filename/directory in DICompileUnit into a DIFileDavid Blaikie
This is the next step towards making the metadata for DIScopes have a common prefix rather than having to delegate based on their tag type. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176913 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12Don't crash if write_impl() leaves less buffer space available than expected.Matt Beaumont-Gay
This was tickled by a Clang diagnostic; Clang test case to follow. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176911 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12Remove unused "isMain" field from DICompileUnitDavid Blaikie
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176910 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12[Support][Path] Don't inf loop if creating the parent directory fails.Michael J. Spencer
Patch by Paul Robinson. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176908 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12Update debug info test cases with empty SplitDebugFilename field.David Blaikie
This could be 'null' or the empty string, DIDescriptor::getStringField coalesces the two cases anyway so it's just a matter of legible/efficient representation. The change in behavior of the DICompileUnit::get* functions could be subsumed by the full verification check - but ideally that should just be an assertion if we could front-load the actual debug info metadata failure paths. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176907 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12ARM cost model: Increase the cost for vector casts that use the stackArnold Schwaighofer
Increase the cost of v8/v16-i8 to v8/v16-i32 casts and truncates as the backend currently lowers those using stack accesses. This was responsible for a significant degradation on MultiSource/Benchmarks/Trimaran/enc-pc1/enc-pc1 where we vectorize one loop to a vector factor of 16. After this patch we select a vector factor of 4 which will generate reasonable code. unsigned char cle[32]; void test(short c) { unsigned short compte; for (compte = 0; compte <= 31; compte++) { cle[compte] = cle[compte] ^ c; } } radar://13220512 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176898 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12Debug Info: use SmallVector instead of std::vector in MCDwarfDirsCUMap and ↵Manman Ren
MCDwarfFilesCUMap git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176893 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12[Support][MemoryBuffer] Use sys::fs::mapped_file_region instead of ↵Michael J. Spencer
sys::Path::MapInFilePages. This gives us memory mapped file I/O on Windows. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176886 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12Debug Info: use DW_FORM_ref_addr instead of DW_FORM_ref4 if the referenced DIEManman Ren
belongs to a different compile unit. DW_FORM_ref_addr should be used for cross compile-unit reference. When compiling a large application, we got a dwarfdump verification error where abstract_origin points to nowhere. This error can't be reproduced on any testing case in MultiSource. We may have other cases where we use DW_FORM_ref4 unconditionally. rdar://problem/13370501 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176882 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12Avoid generating ISD::SELECT for vector operands to SIGN_EXTENDRichard Relph
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176881 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12Remove the assert()'s from the LLVMCreateDisasmCPU() library API and justKevin Enderby
return 0 to indicate failure to create the disassembler. A library routine should not assert and just let the caller handler the error. For example darwin's otool(1) will simply print an error if it ends up using a library that is not configured for a target it wants: % otool -tv ViewController.o ViewController.o: (__TEXT,__text) section can't create arm llvm disassembler This is much better than an abort which appears as a crash to the user or even the assert when using a Debug+Asserts built library: Assertion failed: (MAI && "Unable to create target asm info!"), function LLVMCreateDisasmCPU, file /Volumes/SandBox/llvm/lib/MC/MCDisassembler/Disassembler.cpp, line 47. radr://12539918 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176880 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-12Add a doFinalization method to the DataLayout pass.Pete Cooper
This pass is meant to be immutable, however it holds mutable state to cache StructLayouts. This method will allow the pass manager to clear the mutable state between runs. Note that unfortunately it is still necessary to have the destructor, even though it does the same thing as doFinalization. This is because most TargetMachines embed a DataLayout on which doFinalization isn't run as its never added to the pass manager. I also didn't think it was necessary to complication things with a deInit method for which doFinalization and ~DataLayout both call as there's only one field of mutable state. If we had more fields to finalize i'd have added this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176877 91177308-0d34-0410-b5e6-96231b3b80d8
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