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* [WebAssembly] Fix CFG stackification of nested loops.Dan Gohman2015-10-021-4/+15
| | | | llvm-svn: 249187
* [WebAssembly] Support calls marked as "tail", fastcc, and coldcc.Dan Gohman2015-10-021-4/+14
| | | | llvm-svn: 249184
* Call the correct overload.Richard Trieu2015-10-021-2/+4
| | | | | | | Call the correct overload so a string literal does not get converted to a bool. Also fix the test case to match the names given. llvm-svn: 249183
* [libFuzzer] add a flag -max_total_timeKostya Serebryany2015-10-025-1/+12
| | | | llvm-svn: 249181
* [WebAssembly] Add a resize_memory intrinsic.Dan Gohman2015-10-021-0/+8
| | | | llvm-svn: 249178
* [SCEV] Refactor out a createNodeForSelectSanjoy Das2015-10-021-88/+100
| | | | | | | | | | | | | Summary: We will shortly re-use this for select-like br-phi pairs. Reviewers: atrick, joker-eph, joker.eph Subscribers: sanjoy, llvm-commits Differential Revision: http://reviews.llvm.org/D13377 llvm-svn: 249177
* [WebAssembly] Add a memory_size intrinsic.Dan Gohman2015-10-021-0/+8
| | | | llvm-svn: 249171
* AMDGPU/SI: Add verifier check for exec readsMatt Arsenault2015-10-022-2/+14
| | | | | | | Make sure we aren't accidentally not setting these in the instruction definitions. llvm-svn: 249170
* [SCEV] Try to prove predicates by splitting themSanjoy Das2015-10-021-3/+33
| | | | | | | | | | | | | | | | | | | | | Summary: This change teaches SCEV that to prove `A u< B` it is sufficient to prove each of these facts individually: - B >= 0 - A s< B - A >= 0 In practice, SCEV sometimes finds it easier to prove these facts individually than to prove `A u< B` as one atomic step. Reviewers: reames, atrick, nlewycky, hfinkel Subscribers: sanjoy, llvm-commits Differential Revision: http://reviews.llvm.org/D13042 llvm-svn: 249168
* Actually switch the arch when we see .arch. PR21695Roman Divacky2015-10-021-0/+5
| | | | llvm-svn: 249165
* ARM: diagnose invalid local fixups on Thumb1Tim Northover2015-10-022-20/+62
| | | | | | | | | We previously stopped producing Thumb2 relaxations when they weren't supported, but only diagnosed the case where an actual relocation was produced. We should also tell people if local symbols aren't going to work rather than silently overflowing. llvm-svn: 249164
* ARM: correctly align constant pool value on Thumb1 targets.Tim Northover2015-10-021-1/+1
| | | | | | | Since we're using tLDRpci to access it, the constant pool's address must be 0 (mod 4). llvm-svn: 249163
* [ARM] Typo. NFC.Chad Rosier2015-10-021-1/+1
| | | | llvm-svn: 249153
* Reapply r249121 : "[FastISel][x86] Teach how to select SSE2/AVX bitcasts ↵Andrea Di Biagio2015-10-021-0/+24
| | | | | | | | | | | | | | | | | | | | | | | between 128/256-bit vector types." This patch teaches FastIsel the following two things: 1) On SSE2, no instructions are needed for bitcasts between 128-bit vector types; 2) On AVX, no instructions are needed for bitcasts between 256-bit vector types. Example: %1 = bitcast <4 x i31> %V to <2 x i64> Before (-fast-isel -fast-isel-abort=1): FastIsel miss: %1 = bitcast <4 x i31> %V to <2 x i64> Now we don't fall back to SelectionDAG and we correctly fold that computation propagating the register associated to %V. Originally reviewed here: http://reviews.llvm.org/D13347 llvm-svn: 249147
* Revert: [FastISel][x86] Teach how to select SSE2/AVX bitcasts between ↵Andrea Di Biagio2015-10-021-24/+0
| | | | | | | | | 128/256-bit vector types. r249121 caused a Clang test failure (avx2-buitins.c). Revert r249121 while I keep investigating on the reason why that test failed. llvm-svn: 249124
* [mips][microMIPS] Fix an issue with selecting sqrt instruction in LLVM backendZoran Jovanovic2015-10-021-5/+2
| | | | | | Differential Revision: http://reviews.llvm.org/D13235 llvm-svn: 249123
* [FastISel][x86] Teach how to select SSE2/AVX bitcasts between 128/256-bit ↵Andrea Di Biagio2015-10-021-0/+24
| | | | | | | | | | | | | | | | | | | | | | | vector types. This patch teaches FastIsel the following two things: 1) On SSE2, no instructions are needed for bitcasts between 128-bit vector types; 2) On AVX, no instructions are needed for bitcasts between 256-bit vector types. Example: %1 = bitcast <4 x i31> %V to <2 x i64> Before (-fast-isel -fast-isel-abort=1): FastIsel miss: %1 = bitcast <4 x i31> %V to <2 x i64> Now we don't fall back to SelectionDAG and we correctly fold that computation propagating the register associated to %V. Differential Revision: http://reviews.llvm.org/D13347 llvm-svn: 249121
* [LibFuzzer] test_single_input option to run a single test case.Ivan Krasin2015-10-015-1/+13
| | | | | | | | | | -test_single_input flag specifies a file name with test data. Review URL: http://reviews.llvm.org/D13359 Patch by Mike Aizatsky! llvm-svn: 249096
* [SimplifyLibCalls] Fix instruction misplacement in string/memory libcall ↵Bruno Cardoso Lopes2015-10-011-2/+6
| | | | | | | | | | | | | | | | | | optimization When trying to optimize fortified library functions use the right location to insert new instructions in order to preserve correct def-use order. This fixes an issue where a misplaced instruction definition would happen to be *after* one of its use after a RAUW, forming invalid IR. This behavior was introduced by r227250. Differential Revision: http://reviews.llvm.org/D13301 rdar://problem/22802369 llvm-svn: 249092
* AMDGPU: Fix unused variable warning in release buildMatt Arsenault2015-10-011-2/+2
| | | | llvm-svn: 249091
* AMDGPU: Move SIFixSGPRLiveRanges to be a regalloc passMatt Arsenault2015-10-012-33/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace LiveInterval usage with LiveVariables. LiveIntervals computes far more information than is needed for this pass which just needs to find if an SGPR is live out of the defining block. LiveIntervals are not usually available that early, requiring computing them twice which is very expensive. The extra run of LiveIntervals/LiveVariables/SlotIndexes was costing in total about 5% of compile time. Continuing to use LiveIntervals is problematic. It seems there is an option (early-live-intervals) to run the analysis about where it should go to avoid recomputing LiveVariables, but it seems to be completely broken with subreg liveness enabled. There are also problems from trying to recompute LiveIntervals since this seems to undo LiveVariables and clearing kill flags, causing TwoAddressInstructions to make bad decisions. Insert the pass right after live variables and preserve it. The tricky case to worry about might be phis since LiveVariables doesn't count a register as live out if in the successor block it is only used in a phi, but I don't think this is a concern right now because SIFixSGPRCopies replaces SGPR phis. llvm-svn: 249087
* Fix relocation used for GOT references in non-PIC mode. Fix relocationsJoerg Sonnenberger2015-10-011-28/+33
| | | | | | | | for "set" pseudo op in PIC mode. Differential Revision: http://reviews.llvm.org/D13173 llvm-svn: 249086
* AMDGPU: Merge if and switchMatt Arsenault2015-10-011-14/+17
| | | | llvm-svn: 249082
* AMDGPU: Remove dead codeMatt Arsenault2015-10-011-7/+4
| | | | | | | There's no point in checking VReg_1 because all uses of it should already have been removed by SILowerI1Copies. llvm-svn: 249081
* AMDGPU: Make SIInsertWaits about a factor of 4 fasterMatt Arsenault2015-10-012-23/+24
| | | | | | | | | | | | | | | | | | This was the slowest target custom pass and was spending 80% of the time in getMinimalPhysRegClass which was called for every register operand. Try to use the statically known register class when possible from the instruction's MCOperandInfo. There are a few pseudo instructions which are not well behaved with unknown register classes which still require the expensive physical register class search. There are a few other possibilities for making this even faster, such as not inspecting implicit operands. For now those are checked because it is technically possible to have a scalar load into exec or vcc which can be implicitly used. llvm-svn: 249079
* [WinEH] Emit __C_specific_handler tables for the new IRReid Kleckner2015-10-014-65/+235
| | | | | | | | | | | | We emit denormalized tables, where every range of invokes in the same state gets a complete list of EH action entries. This is significantly simpler than trying to infer the correct nested scoping structure from the MI. Fortunately, for SEH, the nesting structure is really just a size optimization. With this, some basic __try / __except examples work. llvm-svn: 249078
* AMDGPU/SI: Remove assert from AMDGPUOpenCLImageTypeLowering passTom Stellard2015-10-011-2/+6
| | | | | | | | | | | | | | | Summary: Instead of asserting when the kernel metadata is different than we expect, we should just skip lowering that function. This fixes assertion failures with OpenCL argument metadata from older LLVM releases. Reviewers: arsenm Subscribers: arsenm, llvm-commits Differential Revision: http://reviews.llvm.org/D13356 llvm-svn: 249073
* [WinEH] Stop BranchFolding from merging across funcletsDavid Majnemer2015-10-012-13/+7
| | | | | | | BranchFolding would merge two funclets together, this is not OK. Disable this and strengthen the assertion in FuncletLayout. llvm-svn: 249069
* [WinEH] Make FuncletLayout more robust against catchretDavid Majnemer2015-10-018-40/+169
| | | | | | | | | Catchret transfers control from a catch funclet to an earlier funclet. However, it is not completely clear which funclet the catchret target is part of. Make this clear by stapling the catchret target's funclet membership onto the CATCHRET SDAG node. llvm-svn: 249052
* [AArch64] Deprecate a command-line option used for testing.Chad Rosier2015-10-011-12/+4
| | | | | | | Support for pairing unscaled loads and stores has been enabled since the original ARM64 port. This feature is no longer experimental, AFAICT. llvm-svn: 249049
* [SystemZ] Add some generic (floating point support) load instructions.Jonas Paulsson2015-10-014-17/+37
| | | | | | | | | | | | | | | | | | | | | | Add generic instructions for load complement, load negative and load positive for fp32 and fp64, and let isel prefer them. They do not clobber CC, and so give scheduler more freedom. SystemZElimCompare pass will convert them when it can to the CC-setting variants. Regression tests updated to expect the new opcodes in places where the old ones where used. New test case SystemZ/fp-cmp-05.ll checks that SystemZCompareElim.cpp can handle the new opcodes. README.txt updated (bullet removed). Note that fp128 is not yet handled, because it is relatively rare, and is a bit trickier, because of the fact that l.dfr would operate on the sign bit of one of the subregisters of a fp128, but we would not want to copy the other sub-reg in case src and dst regs are not the same. Reviewed by Ulrich Weigand. llvm-svn: 249046
* AMDGPU: Add MEM_RAT STORE_TYPED.Tom Stellard2015-10-013-0/+23
| | | | | | | | | | | | v2: Add test (Matt). Fix capitalization of isEOP (Matt). Move pattern to class parameter (Matt). Make the instruction available to Cayman (Matt). Change name from MEM_RAT WRITE_TYPED to MEM_RAT STORE_TYPED. Patch by: Zoltan Gilian llvm-svn: 249042
* AMDGPU: Factor out EOP query.Tom Stellard2015-10-011-4/+6
| | | | | | | | v2: Fix brace placement and capitalization (Matt). Patch by: Zoltan Gilian llvm-svn: 249041
* Reformat.NAKAMURA Takumi2015-10-011-1/+2
| | | | llvm-svn: 249033
* Revert r248959, "[WinEH] Emit int3 after noreturn calls on Win64"NAKAMURA Takumi2015-10-014-26/+15
| | | | | | It broke; LLVM :: CodeGen__Generic__2009-11-16-BadKillsCrash.ll llvm-svn: 249032
* [InstCombine] Remove trivially empty lifetime start/end ranges.Arnaud A. de Grandmaison2015-10-011-0/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: Some passes may open up opportunities for optimizations, leaving empty lifetime start/end ranges. For example, with the following code: void foo(char *, char *); void bar(int Size, bool flag) { for (int i = 0; i < Size; ++i) { char text[1]; char buff[1]; if (flag) foo(text, buff); // BBFoo } } the loop unswitch pass will create 2 versions of the loop, one with flag==true, and the other one with flag==false, but always leaving the BBFoo basic block, with lifetime ranges covering the scope of the for loop. Simplify CFG will then remove BBFoo in the case where flag==false, but will leave the lifetime markers. This patch teaches InstCombine to remove trivially empty lifetime marker ranges, that is ranges ending right after they were started (ignoring debug info or other lifetime markers in the range). This fixes PR24598: excessive compile time after r234581. Reviewers: reames, chandlerc Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D13305 llvm-svn: 249018
* [SystemZ] Add assembly instructions for obtaining clock values as well as ↵Ulrich Weigand2015-10-011-0/+20
| | | | | | | | | | | CPU features Provide assembler support for STCK, STCKF, STCKE, and STFLE. Author: joncmu Differential Revision: http://reviews.llvm.org/D13299 llvm-svn: 249015
* [AArch64] Hoist commonly failing check. NFC.Chad Rosier2015-10-011-6/+6
| | | | llvm-svn: 249011
* [AArch64] Rename variable to improve readability. NFC.Chad Rosier2015-10-011-10/+10
| | | | llvm-svn: 249008
* [AArch64] Update comment to reflect reality.Chad Rosier2015-10-011-2/+2
| | | | llvm-svn: 249007
* [mips][microMIPS] Implement CACHEE, WRPGPR and WSBH instructionsZoran Jovanovic2015-10-013-5/+39
| | | | | | Differential Revision: http://reviews.llvm.org/D10337 llvm-svn: 249004
* [ARM] More care with Thumb1 writeback in ARMLoadStoreOptimizerScott Douglass2015-10-011-3/+7
| | | | | | Differential Revision: http://reviews.llvm.org/D13240 llvm-svn: 249002
* [NaryReassociate] SeenExprs records WeakVHJingyue Wu2015-10-011-6/+12
| | | | | | | | | | | | | | | | Summary: The instructions SeenExprs records may be deleted during rewriting. FindClosestMatchingDominator should ignore these deleted instructions. Fixes PR24301. Reviewers: grosser Subscribers: grosser, llvm-commits Differential Revision: http://reviews.llvm.org/D13315 llvm-svn: 248983
* Fix performance problem in long-running SectionMemoryManagersKeno Fischer2015-10-011-4/+15
| | | | | | | | | | | | | | | | | | | | | Summary: Without this patch, the memory manager would call `mprotect` on every memory region it ever allocated whenever it wanted to finalize memory (i.e. not just the ones it just allocated). This caused terrible performance problems for long running memory managers. In one particular compile heavy julia benchmark, we were spending 50% of time in `mprotect` if running under MCJIT. Fix this by splitting allocated memory blocks into those on which memory permissions have been set and those on which they haven't and only running `mprotect` on the latter. Reviewers: lhames Subscribers: reames, llvm-commits Differential Revision: http://reviews.llvm.org/D13156 llvm-svn: 248981
* AMDGPU/SI: Re-order PreloadedValue enum and number entries based on init orderTom Stellard2015-10-011-9/+12
| | | | | | | | | | Reviewers: arsenm Subscribers: arsenm, llvm-commits Differential Revision: http://reviews.llvm.org/D12451 llvm-svn: 248978
* Update sample profile propagation algorithm.Dehao Chen2015-10-011-24/+14
| | | | | | http://reviews.llvm.org/D13218 llvm-svn: 248968
* [X86] Don't custom-lower vNi32 uint_to_fp when unsafe-fp-math.Ahmed Bougacha2015-10-011-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The custom code produces incorrect results if later reassociated. Since r221657, on x86, vNi32 uitofp is lowered using an optimized sequence: movdqa LCPI0_0(%rip), %xmm1 ## xmm1 = [65535, ...] pand %xmm0, %xmm1 por LCPI0_1(%rip), %xmm1 ## [0x4b000000, ...] psrld $16, %xmm0 por LCPI0_2(%rip), %xmm0 ## [0x53000000, ...] addps LCPI0_3(%rip), %xmm0 ## [float -5.497642e+11, ...] addps %xmm1, %xmm0 Since r240361, the machine combiner opportunistically reassociates 2-instruction sequences (with -ffast-math). In the new code sequence, the ADDPS' are eligible. In isolation, for simple examples (without reassociable users), this makes no performance difference (the goal being to enable reassociation of longer chains). In the trivial example (just one uitofp), the reassociation doesn't happen, because (I think) it would require the emission of a separate movaps for a constantpool load (instead of folding it into addps). However, when we have multiple uitofp sequences, and the constantpool loads are CSE'd earlier, the machine combiner can do the reassociation. When the ADDPS' are reassociated, the resulting sequence isn't correct anymore, as we'd be adding large (2**39) constants with comparatively smaller values (~2**23). Given that two of the three inputs are powers of 2 larger than 2**16, and that ulp(2**39) == 2**(39-24) == 2**15, the reassociated chain will produce 0 for any input in [0, 2**14[. In my testing, it also produces wrong results for 99.5% of [0, 2**32[. Avoid this by disabling the new lowering when -ffast-math. It does mean that we'll get slower code than without it, but at least we won't get egregiously incorrect code. One might argue that, considering -ffast-math is all but meaningless, uitofp producing wrong results isn't a compiler bug. But it really is. Fixes PR24512. ...though this is really more of a workaround. Ideally, we'd have some sort of Machine FMF, but that's a problem that's not worth tackling until we do more with machine IR. llvm-svn: 248965
* [WinEH] Emit int3 after noreturn calls on Win64Reid Kleckner2015-09-304-15/+26
| | | | | | | | | | | | | | | | | | | | | | | The Win64 unwinder disassembles forwards from each PC to try to determine if this PC is in an epilogue. If so, it skips calling the EH personality function for that frame. Typically, this means you cannot catch an exception in the same frame that you threw it, because 'throw' calls a noreturn runtime function. Previously we avoided this problem with the TrapUnreachable TargetOption, but that's a much bigger hammer than we need. All we need is a 1 byte non-epilogue instruction right after the call. Instead, what we got was an unconditional branch to a shared block containing the ud2, potentially 7 bytes instead of 1. So, this reverts r206684, which added TrapUnreachable, and replaces it with something better. The new code pattern matches for invoke/call followed by unreachable and inserts an int3 into the DAG. To be 100% watertight, we would need to insert SEH_Epilogue instructions into all basic blocks ending in a call with no terminators or successors, but in practice this is unlikely to come up. llvm-svn: 248959
* [x86] enable machine combiner reassociations for 256-bit vector logical ↵Sanjay Patel2015-09-301-0/+3
| | | | | | integer insts llvm-svn: 248955
* [libFuzzer] Marking exported symbols as visible. Patch by Mike AizatskyKostya Serebryany2015-09-301-1/+2
| | | | llvm-svn: 248954
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