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* Fix updateTerminator to be resiliant to degenerate terminators whereChandler Carruth2012-04-163-9/+31
| | | | | | | | | | | | | | | | | | | | | both fallthrough and a conditional branch target the same successor. Gracefully delete the conditional branch and introduce any unconditional branch needed to reach the actual successor. This fixes memory corruption in 2009-06-15-RegScavengerAssert.ll and possibly other tests. Also, while I'm here fix a latent bug I spotted by inspection. I never applied the same fundamental fix to this fallthrough successor finding logic that I did to the logic used when there are no conditional branches. As a consequence it would have selected landing pads had they be aligned in just the right way here. I don't have a test case as I spotted this by inspection, and the previous time I found this required have of TableGen's source code to produce it. =/ I hate backend bugs. ;] Thanks to Jim Grosbach for helping me reason through this and reviewing the fix. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154867 91177308-0d34-0410-b5e6-96231b3b80d8
* MC assembly parser handling for trailing comma in macro instantiation.Jim Grosbach2012-04-162-5/+29
| | | | | | | | | A trailing comma means no argument at all (i.e., as if the comma were not present), not an empty argument to the invokee. rdar://11252521 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154863 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM handle :lower16: and :upper16: after a '#' prefix.Jim Grosbach2012-04-161-13/+17
| | | | | | rdar://11252521 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154862 91177308-0d34-0410-b5e6-96231b3b80d8
* FileCheckize these tests.Jakob Stoklund Olesen2012-04-162-6/+23
| | | | | | Add an extra test to ldr_post with an immediate increment. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154859 91177308-0d34-0410-b5e6-96231b3b80d8
* Forgot to remove fast math metadata from the release notes.Duncan Sands2012-04-161-3/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154858 91177308-0d34-0410-b5e6-96231b3b80d8
* Disable code placement for this test.Jakob Stoklund Olesen2012-04-161-1/+2
| | | | | | It makes it less sensitive to small changes in heuristics. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154857 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove support for the special 'fast' value for fpmath accuracy for the moment.Duncan Sands2012-04-168-83/+10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154850 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix incorrect atomics codegen introduced in r154705, and extend test to ↵Richard Smith2012-04-162-5/+10
| | | | | | catch it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154845 91177308-0d34-0410-b5e6-96231b3b80d8
* This patch fixes 3 problems:Akira Hatanaka2012-04-161-10/+10
| | | | | | | | | | | | | | | 1. CHECKNEXT was used instead of CHECK-NEXT which caused the line to be ignored which in turn hid the next 2 problems: 2. ('sh_offset', 0x{{{[0-9,a-f]+}}) had one too many leading curly braces and failed to do it's job of accepting all hex digits and: 3. The check for the hex values for the code instructions didn't account for blank separators. Patch by Jack Carter. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154842 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove unused variableDavid Blaikie2012-04-161-1/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154841 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM assembly two-operand forms for VRSHL.Jim Grosbach2012-04-162-1/+71
| | | | | | rdar://11252521 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154840 91177308-0d34-0410-b5e6-96231b3b80d8
* Tidy up. Test formatting.Jim Grosbach2012-04-161-53/+64
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154839 91177308-0d34-0410-b5e6-96231b3b80d8
* Do not add offset in applyFixup. This has already been accounted for in Value. Akira Hatanaka2012-04-162-4/+24
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154838 91177308-0d34-0410-b5e6-96231b3b80d8
* Describe Polly as a 'Polyhedral Optimizer'Tobias Grosser2012-04-161-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154834 91177308-0d34-0410-b5e6-96231b3b80d8
* Add Polly news to the release notesTobias Grosser2012-04-161-0/+30
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154833 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM two-operand aliases for VRHADD instructions.Jim Grosbach2012-04-162-0/+59
| | | | | | rdar://11252521 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154832 91177308-0d34-0410-b5e6-96231b3b80d8
* Tidy up. Testcase formatting.Jim Grosbach2012-04-161-13/+14
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154831 91177308-0d34-0410-b5e6-96231b3b80d8
* Link to the autovectorization EuroLLVM slides in the release notes.Hal Finkel2012-04-161-1/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154830 91177308-0d34-0410-b5e6-96231b3b80d8
* Hexagon V5 (Floating Point) Support.Sirish Pande2012-04-1620-1814/+4917
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154829 91177308-0d34-0410-b5e6-96231b3b80d8
* Move to X86 directory because this fails on non-X86 platforms.Bill Wendling2012-04-161-3/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154825 91177308-0d34-0410-b5e6-96231b3b80d8
* Make it possible to indicate relaxed floating point requirements at the IR levelDuncan Sands2012-04-1610-86/+282
| | | | | | | | | | through the use of 'fpmath' metadata. Currently this only provides a 'fpaccuracy' value, which may be a number in ULPs or the keyword 'fast', however the intent is that this will be extended with additional information about NaN's, infinities etc later. No optimizations have been hooked up to this so far. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154822 91177308-0d34-0410-b5e6-96231b3b80d8
* Flip the new block-placement pass to be on by default.Chandler Carruth2012-04-1632-83/+104
| | | | | | | | | | | | | | | | | | | | | | | | | | This is mostly to test the waters. I'd like to get results from FNT build bots and other bots running on non-x86 platforms. This feature has been pretty heavily tested over the last few months by me, and it fixes several of the execution time regressions caused by the inlining work by preventing inlining decisions from radically impacting block layout. I've seen very large improvements in yacr2 and ackermann benchmarks, along with the expected noise across all of the benchmark suite whenever code layout changes. I've analyzed all of the regressions and fixed them, or found them to be impossible to fix. See my email to llvmdev for more details. I'd like for this to be in 3.1 as it complements the inliner changes, but if any failures are showing up or anyone has concerns, it is just a flag flip and so can be easily turned off. I'm switching it on tonight to try and get at least one run through various folks' performance suites in case SPEC or something else has serious issues with it. I'll watch bots and revert if anything shows up. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154816 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove an overly brittle test. This test will no longer be interestingChandler Carruth2012-04-161-174/+0
| | | | | | | | once we start changing the block layout, so just nuke it. If anyone has ideas about how to craft a code layout agnostic form of the test please let me know. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154815 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove the methods for attaching metadata to instructions/retrieving metadataDuncan Sands2012-04-161-21/+0
| | | | | | | from instructions. Chandler doesn't like them being here. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154813 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a somewhat hacky heuristic to do something different from whole-loopChandler Carruth2012-04-162-8/+83
| | | | | | | | | | | | | rotation. When there is a loop backedge which is an unconditional branch, we will end up with a branch somewhere no matter what. Try placing this backedge in a fallthrough position above the loop header as that will definitely remove at least one branch from the loop iteration, where whole loop rotation may not. I haven't seen any benchmarks where this is important but loop-blocks.ll tests for it, and so this will be covered when I flip the default. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154812 91177308-0d34-0410-b5e6-96231b3b80d8
* Add convenience methods to MDBuilder for attaching metadata to instructions,Duncan Sands2012-04-161-5/+27
| | | | | | | | | and retrieving it from instructions. I don't have a use for this but is seems logical for it to exist. While there, remove some 'const' markings from methods which are in fact 'const' in practice, but aren't logically 'const'. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154811 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix style violation in BBVectorize (pointed out by Bill Wendling)Hal Finkel2012-04-161-3/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154810 91177308-0d34-0410-b5e6-96231b3b80d8
* Add -disassemble support for -show-inst and -show-encode capability llvm-mc. ↵Richard Barton2012-04-164-175/+81
| | | | | | | | | Also refactor so all MC paraphernalia are created once for all uses as much as possible. The test change is to account for the fact that the default disassembler behaviour has changed with regards to specifying the assembly syntax to use. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154809 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove lto_codegen_set_whole_program_optimization. It is a work in progress,Rafael Espindola2012-04-165-18/+5
| | | | | | | | | so we don't want it to show up in the stable 3.1 interface. While at it, add a comment about why LTOCodeGenerator manually creates the internalize pass. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154807 91177308-0d34-0410-b5e6-96231b3b80d8
* Tweak the loop rotation logic to check whether the loop is naturallyChandler Carruth2012-04-162-13/+83
| | | | | | | | | | | laid out in a form with a fallthrough into the header and a fallthrough out of the bottom. In that case, leave the loop alone because any rotation will introduce unnecessary branches. If either side looks like it will require an explicit branch, then the rotation won't add any, do it to ensure the branch occurs outside of the loop (if possible) and maximize the benefit of the fallthrough in the bottom. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154806 91177308-0d34-0410-b5e6-96231b3b80d8
* Reapply 'Add reverseColor to raw_ostream'.Benjamin Kramer2012-04-165-0/+58
| | | | | | | To be used in printing unprintable source in clang diagnostics. Patch by Seth Cantrell, with a minor fix for mingw by me. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154805 91177308-0d34-0410-b5e6-96231b3b80d8
* Documentation fixes to LLVMBuild.html [PR 11563]Eli Bendersky2012-04-161-4/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154804 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r154800 which breaks windows builders.Argyrios Kyrtzidis2012-04-165-59/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154802 91177308-0d34-0410-b5e6-96231b3b80d8
* Replace vpermd/vpermps intrinic patterns with custom lowering to target ↵Craig Topper2012-04-162-18/+14
| | | | | | specific nodes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154801 91177308-0d34-0410-b5e6-96231b3b80d8
* Add reverseColor to raw_ostream.Argyrios Kyrtzidis2012-04-165-0/+59
| | | | | | | To be used in printing unprintable source in clang diagnostics. Patch by Seth Cantrell! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154800 91177308-0d34-0410-b5e6-96231b3b80d8
* Change type profile for vpermv back to using operand type for the mask ↵Craig Topper2012-04-162-5/+5
| | | | | | argument to match intrinsic behavior. Add a bitcast to the lowering code to convert mask from v8i32 to v8f32 for vpermps. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154798 91177308-0d34-0410-b5e6-96231b3b80d8
* Flip the arguments when converting vpermd/vpermps intrinsics into ↵Craig Topper2012-04-161-3/+3
| | | | | | instructions. The intrinsic has the mask as the last operand, but the instruction has it as the second. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154797 91177308-0d34-0410-b5e6-96231b3b80d8
* Add credit and release notes for r150307. By Kai Nacke.Bill Wendling2012-04-162-0/+5
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154796 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a Fixme.Bill Wendling2012-04-161-0/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154793 91177308-0d34-0410-b5e6-96231b3b80d8
* add configure flag --with-default-sysrootSebastian Pop2012-04-164-5/+27
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154791 91177308-0d34-0410-b5e6-96231b3b80d8
* Say something about -vectorize in the release notes.Hal Finkel2012-04-161-0/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154788 91177308-0d34-0410-b5e6-96231b3b80d8
* Simplify checking for pointer types in BBVectorize (this change was ↵Hal Finkel2012-04-161-5/+2
| | | | | | suggested by Duncan). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154787 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove dead SD nodes after the combining pass. Fixes PR12201.Hal Finkel2012-04-162-0/+47
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154786 91177308-0d34-0410-b5e6-96231b3b80d8
* Rewrite how machine block placement handles loop rotation.Chandler Carruth2012-04-162-69/+196
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a complex change that resulted from a great deal of experimentation with several different benchmarks. The one which proved the most useful is included as a test case, but I don't know that it captures all of the relevant changes, as I didn't have specific regression tests for each, they were more the result of reasoning about what the old algorithm would possibly do wrong. I'm also failing at the moment to craft more targeted regression tests for these changes, if anyone has ideas, it would be welcome. The first big thing broken with the old algorithm is the idea that we can take a basic block which has a loop-exiting successor and a looping successor and use the looping successor as the layout top in order to get that particular block to be the bottom of the loop after layout. This happens to work in many cases, but not in all. The second big thing broken was that we didn't try to select the exit which fell into the nearest enclosing loop (to which we exit at all). As a consequence, even if the rotation worked perfectly, it would result in one of two bad layouts. Either the bottom of the loop would get fallthrough, skipping across a nearer enclosing loop and thereby making it discontiguous, or it would be forced to take an explicit jump over the nearest enclosing loop to earch its successor. The point of the rotation is to get fallthrough, so we need it to fallthrough to the nearest loop it can. The fix to the first issue is to actually layout the loop from the loop header, and then rotate the loop such that the correct exiting edge can be a fallthrough edge. This is actually much easier than I anticipated because we can handle all the hard parts of finding a viable rotation before we do the layout. We just store that, and then rotate after layout is finished. No inner loops get split across the post-rotation backedge because we check for them when selecting the rotation. That fix exposed a latent problem with our exitting block selection -- we should allow the backedge to point into the middle of some inner-loop chain as there is no real penalty to it, the whole point is that it *won't* be a fallthrough edge. This may have blocked the rotation at all in some cases, I have no idea and no test case as I've never seen it in practice, it was just noticed by inspection. Finally, all of these fixes, and studying the loops they produce, highlighted another problem: in rotating loops like this, we sometimes fail to align the destination of these backwards jumping edges. Fix this by actually walking the backwards edges rather than relying on loopinfo. This fixes regressions on heapsort if block placement is enabled as well as lots of other cases where the previous logic would introduce an abundance of unnecessary branches into the execution. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154783 91177308-0d34-0410-b5e6-96231b3b80d8
* Merge vpermps/vpermd and vpermpd/vpermq SD nodes.Craig Topper2012-04-164-31/+20
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154782 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix SDTypeProfile for vpermps. The mask operand should be v8i32.Craig Topper2012-04-161-2/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154781 91177308-0d34-0410-b5e6-96231b3b80d8
* Spacing fixes and 80 column fixes. Use 0 instead of 0x80 for undef indices ↵Craig Topper2012-04-151-9/+12
| | | | | | in vpermps/vpermd. Hardware only looks at lower 3-bits. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154780 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove AVX2 vpermq and vpermpd intrinsics. These can now be handled with ↵Craig Topper2012-04-153-39/+8
| | | | | | normal shuffle vectors. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154778 91177308-0d34-0410-b5e6-96231b3b80d8
* Make member variables of AsmToken private. Remove unnecessary forward ↵Craig Topper2012-04-153-5/+2
| | | | | | declarations. Remove an unnecessary include. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154775 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix class name.Jakub Staszak2012-04-151-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@154773 91177308-0d34-0410-b5e6-96231b3b80d8
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