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2012-06-20Move the implementation of LoopInfo into LoopInfoImpl.h.Andrew Trick
The implementation only needs inclusion from LoopInfo.cpp and MachineLoopInfo.cpp. Clients of the interface should only include the interface. This makes the interface readable and speeds up rebuilds after modifying the implementation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158787 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-20Sphinxify the CodingStandard documentation.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158786 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-20Add permissions(), map_file_pages(), and unmap_file_pages() to llvm::sys::fs ↵Nick Kledzik
and add unit test. Unix is implemented. Windows side needs to be implemented. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158770 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-20Don't assert when given an empty range.Kaelyn Uhrain
llvm::RawMemoryObject handles empty ranges just fine, and the assert can be triggered in the wild by e.g. invoking clang with a file that included an empty pre-compiled header file when clang has been built with assertions enabled. Without assertions enabled, clang will properly report that the empty file is not a valid PCH. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158769 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Add regunit liveness support to LiveIntervals::handleMove().Jakob Stoklund Olesen
When LiveIntervals is tracking fixed interference in regunits, make sure to update those intervals as well. Currently guarded by -live-regunits. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158766 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Alphabetize.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158764 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Tidy up.Chad Rosier
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158762 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Add an ensureMaxAlignment() function to MachineFrameInfo (analogous toChad Rosier
ensureAlignment() in MachineFunction). Also, drop setMaxAlignment() in favor of this new function. This creates a main entry point to setting MaxAlignment, which will be helpful for future work. No functionality change intended. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158758 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Add DAG-combines for aggressive FMA formation.Lang Hames
This patch adds DAG combines to form FMAs from pairs of FADD + FMUL or FSUB + FMUL. The combines are performed when: (a) Either AllowExcessFPPrecision option (-enable-excess-fp-precision for llc) OR UnsafeFPMath option (-enable-unsafe-fp-math) are set, and (b) TargetLoweringInfo::isFMAFasterThanMulAndAdd(VT) is true for the type of the FADD/FSUB, and (c) The FMUL only has one user (the FADD/FSUB). If your target has fast FMA instructions you can make use of these combines by overriding TargetLoweringInfo::isFMAFasterThanMulAndAdd(VT) to return true for types supported by your FMA instruction, and adding patterns to match ISD::FMA to your FMA instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158757 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-1980 col.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158755 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Typo. Patch by Cameron McInally <cameron.mcinally@nyu.edu>.Chad Rosier
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158754 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Add Projects.rst to the toctree.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158753 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Use correct capitalization.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158752 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Add a triple.Jakob Stoklund Olesen
The test was failing on Linux because of asm syntax differences. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158748 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Implement PPCInstrInfo::isCoalescableExtInstr().Jakob Stoklund Olesen
The PPC::EXTSW instruction preserves the low 32 bits of its input, just like some of the x86 instructions. Use it to reduce register pressure when the low 32 bits have multiple uses. This requires a small change to PeepholeOptimizer since EXTSW takes a 64-bit input register. This is related to PR5997. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158743 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Style: Don't reuse variables for multiple purposes.Jakob Stoklund Olesen
No functional change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158742 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19New test tool: obj2yamlMarshall Clow
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158730 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Indent coding examples.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158728 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Remove bad HTML tags. Add missing :.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158726 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Fix PR13148, an inf-loop in StringMap.Chandler Carruth
StringMap suffered from the same bug as DenseMap: when you explicitly construct it with a small number of buckets, you can arrange for the tombstone-based growth path to be followed when the number of buckets was less than '8'. In that case, even with a full map, it would compare '0' as not less than '0', and refuse to grow the table, leading to inf-loops trying to find an empty bucket on the next insertion. The fix is very simple: use '<=' as the comparison. The same fix was applied to DenseMap as well during its recent refactoring. Thanks to Alex Bolz for the great report and test case. =] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158725 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Remove some superfluous SCOPED_TRACEs from this unit test.Chandler Carruth
GoogleTest already prints errors with all the information about which test case contained the error. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158724 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Emit TableGen's header comment with C-style comments, so it can be used from ↵Benjamin Kramer
C89 code. Should silence warnings when compiling the X86 disassembler. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158723 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Have ARM ELF use correct reloc for "b" instr.Jan Wen Voung
The condition code didn't actually matter for arm "b" instructions, unlike "bl". It should just use the R_ARM_JUMP24 reloc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158722 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Mark most PPC register classes to avoid write-after-write.Hal Finkel
For processors with the G5-like instruction-grouping scheme, this helps avoid early group termination due to a write-after-write dependency within the group. It should also help on pipelined embedded cores. On POWER7, over the test suite, this gives an average 0.5% speedup. The largest speedups are: SingleSource/Benchmarks/Stanford/Quicksort - 33% MultiSource/Applications/d/make_dparser - 21% MultiSource/Benchmarks/FreeBench/analyzer/analyzer - 12% MultiSource/Benchmarks/MiBench/telecomm-FFT/telecomm-fft - 12% Largest slowdowns: SingleSource/Benchmarks/Stanford/Bubblesort - 23% MultiSource/Benchmarks/Prolangs-C++/city/city - 21% MultiSource/Benchmarks/BitBench/uuencode/uuencode - 16% MultiSource/Benchmarks/mediabench/mpeg2/mpeg2dec/mpeg2decode - 13% git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158719 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Updating the credits after r158717Aaron Ballman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158718 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Put flag names on one line.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158715 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Fix italicized text.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158714 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Use correct URL.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158713 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Fix numbering of list items.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158712 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Fix some Sphinx mistakes.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158711 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19First attempt at Sphinx. Convert the Projects.html file to Sphinx format.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158709 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19[Support/PathV2] Fix out of bounds access in identify_magic when the file is ↵Michael J. Spencer
empty. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158704 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Make MipsLongBranch::runOnMachineFunction return true.Akira Hatanaka
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158702 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Use MachineBasicBlock::instr_iterator instead of MachineBasicBlock::iterator inAkira Hatanaka
MipsCodeEmitter.cpp. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158701 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Add support for generating reg+reg preinc stores on PPC.Hal Finkel
PPC will now generate STWUX and friends. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158698 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19really add a triple :-(Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158696 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Add a triple to the test.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158695 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-19Move the support for using .init_array from ARM to the genericRafael Espindola
TargetLoweringObjectFileELF. Use this to support it on X86. Unlike ARM, on X86 it is not easy to find out if .init_array should be used or not, so the decision is made via TargetOptions and defaults to off. Add a command line option to llc that enables it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158692 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-18revert r158660, since Chris has some issues with this patch (namely using ↵Nuno Lopes
code to reprent information only used by the compiler) Original commit msg: add the 'alloc' metadata node to represent the size of offset of buffers pointed to by pointers. This metadata can be attached to any instruction returning a pointer git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158688 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-18Don't copy a potentially-uninitialized variable.David Blaikie
Based on review discussion of r158638 with Chandler Carruth, Tobias von Koch, and Duncan Sands and a -Wmaybe-uninitialized warning from GCC. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158685 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-18ARM: use NOEN loads and stores if possible when handling struct byval.Manman Ren
This change is to be enabled in clang. rdar://9877866 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158684 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-18Allow up to 64 functional units per processor itinerary.Hal Finkel
This patch changes the type used to hold the FU bitset from unsigned to uint64_t. This will be needed for some upcoming PowerPC itineraries. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158679 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-18[docs] Port FAQ over to Sphinx.Michael J. Spencer
Patch by Mikael Lyngvig! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158677 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-18Added accessors for getting coff_relocation infoMarshall Clow
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158675 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-18ARM: Define generic HINT instruction.Jim Grosbach
The NOP, WFE, WFI, SEV and YIELD instructions are all hints w/ a different immediate value in bits [7,0]. Define a generic HINT instruction and refactor NOP, WFI, WFI, SEV and YIELD to be assembly aliases of that. rdar://11600518 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158674 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-18TableGen: AsmMatcher missing-features list minimization.Jim Grosbach
When returning a 'cannot match due to missing CPU features' error code, if there are multiple potential matches with different feature sets, return the smallest set of missing features from the alternatives as that's most likely to be the one that's desired. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158673 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-18Add mipsel-* to the list of targets recognized by configure script.Simon Atanasyan
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158670 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-18add the 'alloc' metadata node to represent the size of offset of buffers ↵Nuno Lopes
pointed to by pointers. This metadata can be attached to any instruction returning a pointer git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158660 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-18This change handles a another case for generating the bic instruction Joel Jones
when a compile time constant is known. This occurs when implicitly zero extending function arguments from 16 bits to 32 bits. The 8 bit case doesn't need to be handled, as the 8 bit constants are encoded directly, thereby not needing a separate load instruction to form the constant into a register. <rdar://problem/11481151> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158659 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-18Add a regression test for the bug exposed by r158087, which has beenChandler Carruth
temporarily reverted. This test is annoyingly overspecified, but I don't know of another way to thoroughly test the saving and restoring of the registers. While this will have to be adjusted even with the issue fixed in order to re-apply r158087, those adjustments should very clearly indicate that it is still correct (%esp getting restored prior to pops), whereas without it, this case can easily slip under the radar. Still, any suggestions for improvements are very welcome. All credit to Matt Beaumont-Gay for reducing this out of an insane Address Sanitizer crash to a reasonably small seg-faulting C program when built with -mstackrealign. I just reduced it to IR, which was much simpler. =] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158656 91177308-0d34-0410-b5e6-96231b3b80d8
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