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2016-09-13Apply Clang-format to MCAsmParser.cpp NFC.Nirav Dave1-1/+2
llvm-svn: 281337
2016-09-13Defer asm errors to post-statement failureNirav Dave16-830/+518
Recommitting after fixing AsmParser Initialization. Allow errors to be deferred and emitted as part of clean up to simplify and shorten Assembly parser code. This will allow error messages to be emitted in helper functions and be modified by the caller which has better context. As part of this many minor cleanups to the Parser: * Unify parser cleanup on error * Add Workaround for incorrect return values in ParseDirective instances * Tighten checks on error-signifying return values for parser functions and fix in-tree TargetParsers to be more consistent with the changes. * Fix AArch64 test cases checking for spurious error messages that are now fixed. These changes should be backwards compatible with current Target Parsers so long as the error status are correctly returned in appropriate functions. Reviewers: rnk, majnemer Subscribers: aemerson, jyknight, llvm-commits Differential Revision: https://reviews.llvm.org/D24047 llvm-svn: 281336
2016-09-13[LoopInterchange] Minor refactor. NFC.Chad Rosier1-12/+11
llvm-svn: 281334
2016-09-13[InstSimplify] Add tests to show missed bitcast folding opportunities.Andrea Di Biagio1-0/+144
InstSimplify doesn't always know how to fold a bitcast of a constant vector. In particular, the logic in InstSimplify doesn't know how to handle the case where the constant vector in input contains some undef elements, and the number of elements is smaller than the number of elements of the bitcast vector type. llvm-svn: 281332
2016-09-13Don't use else if after return. Tidy comments. NFC.Chad Rosier1-5/+3
llvm-svn: 281331
2016-09-13Typo. NFC.Chad Rosier1-3/+3
llvm-svn: 281330
2016-09-13[LoopInterchange] Tidy up and remove unnecessary dyn_casts. NFC.Chad Rosier1-13/+12
llvm-svn: 281328
2016-09-13Revert "[ARM] Promote small global constants to constant pools"James Molloy5-253/+1
This reverts commit r281314. Speculatively revert as it's possible this caused linker errors: http://lab.llvm.org:8011/builders/clang-native-arm-lnt/builds/19656 llvm-svn: 281327
2016-09-13Remove InstCombine test fileSam Parker1-17/+0
My previous commit should of removed a test file but I missed it. llvm-svn: 281326
2016-09-13[ARM] Add ".code 32" to functions in the ARM instruction setPablo Barrio3-3/+28
Before, only Thumb functions were marked as ".code 16". These ".code x" directives are effective until the next directive of its kind is encountered. Therefore, in code with interleaved ARM and Thumb functions, it was possible to declare a function as ARM and end up with a Thumb function after assembly. A test has been added. An existing test has also been fixed to take this change into account. Reviewers: aschwaighofer, t.p.northover, jmolloy, rengolin Subscribers: aemerson, rengolin, llvm-commits Differential Revision: https://reviews.llvm.org/D24337 llvm-svn: 281324
2016-09-13[Thumb] Teach ISel how to lower compares of AND bitmasks efficientlyJames Molloy9-26/+231
For the common pattern (CMPZ (AND x, #bitmask), #0), we can do some more efficient instruction selection if the bitmask is one consecutive sequence of set bits (32 - clz(bm) - ctz(bm) == popcount(bm)). 1) If the bitmask touches the LSB, then we can remove all the upper bits and set the flags by doing one LSLS. 2) If the bitmask touches the MSB, then we can remove all the lower bits and set the flags with one LSRS. 3) If the bitmask has popcount == 1 (only one set bit), we can shift that bit into the sign bit with one LSLS and change the condition query from NE/EQ to MI/PL (we could also implement this by shifting into the carry bit and branching on BCC/BCS). 4) Otherwise, we can emit a sequence of LSLS+LSRS to remove the upper and lower zero bits of the mask. 1-3 require only one 16-bit instruction and can elide the CMP. 4 requires two 16-bit instructions but can elide the CMP and doesn't require materializing a complex immediate, so is also a win. llvm-svn: 281323
2016-09-13Enable simplify libcalls for ARM PCSSam Parker3-3/+264
Teach SimplifyLibcalls that in can treat functions annotated with apcs, aapcs or aapcs_vfp like normal C functions if they only take and return integer or pointer values, and the target is not iOS. Differential Revision: https://reviews.llvm.org/D24453 llvm-svn: 281322
2016-09-13[llvm-cov] - Included footer "Generated by llvm-cov -- llvm version <version ↵Ying Yi4-10/+29
number>" in the coverage report. The llvm-cov version information will be useful to the user when comparing the code coverage across different versions of llvm-cov. This patch provides the llvm-cov version information in the generated coverage report. Differential Revision: https://reviews.llvm.org/D24457 llvm-svn: 281321
2016-09-13[ARM] Support ldr.w in pseudo instruction ldr rd,=immediatePeter Smith3-0/+78
The changes made in r269352, r269353 and r269354 to support the transformation of the ldr rd,=immediate to mov introduced a regression from 3.8 (ldr.w rd, =immediate) not supported. This change puts support back in for ldr.w by means of a t2InstAlias for the .w form. The .w is ignored in ARM state and propagated to the ldr in Thumb2. llvm-svn: 281319
2016-09-13[ARM] Promote small global constants to constant poolsJames Molloy5-1/+253
If a constant is unamed_addr and is only used within one function, we can save on the code size and runtime cost of an indirection by changing the global's storage to inside the constant pool. For example, instead of: ldr r0, .CPI0 bl printf bx lr .CPI0: &format_string format_string: .asciz "hello, world!\n" We can emit: adr r0, .CPI0 bl printf bx lr .CPI0: .asciz "hello, world!\n" This can cause significant code size savings when many small strings are used in one function (4 bytes per string). llvm-svn: 281314
2016-09-13[WebAssembly] Trying to fix broken tests in CodeGen/WebAssembly caused by ↵Eric Liu2-2/+2
r281285. Reviewers: bkramer, ddcc, dschuff, sunfish Subscribers: jfb, llvm-commits, dschuff Differential Revision: https://reviews.llvm.org/D24497 llvm-svn: 281312
2016-09-13Remove MVT:i1 xor instruction before SELECT. (Performance improvement).Ayman Musa3-11/+69
Differential Revision: https://reviews.llvm.org/D23764 llvm-svn: 281308
2016-09-13Revert of r281304 as it is causing build bot failures in hexagonSjoerd Meijer10-64/+74
hwloop regression tests. These tests pass locally; will be investigating where these differences come from. llvm-svn: 281306
2016-09-13This adds a new field isAdd to MCInstrDesc. The ARM and Hexagon instructionSjoerd Meijer10-74/+64
descriptions now tag add instructions, and the Hexagon backend is using this to identify loop induction statements. Patch by Sam Parker and Sjoerd Meijer. Differential Revision: https://reviews.llvm.org/D23601 llvm-svn: 281304
2016-09-13AVX-512: Fix for PR28175 - Scalar code optimization.Elena Demikhovsky6-29/+105
Optimized (truncate (assertzext x) to i1) and anyext i1 to i8/16/32. Optimization of this patterns is a one more step towards i1 optimization on AVX-512. Differential Revision: https://reviews.llvm.org/D24456 llvm-svn: 281302
2016-09-13[AArch64] Support stackmap/patchpoint in getInstSizeInBytesDiana Picus3-4/+191
We currently return 4 for stackmaps and patchpoints, which is very optimistic and can in rare cases cause the branch relaxation pass to fail to relax certain branches. This patch causes getInstSizeInBytes to return a pessimistic estimate of the size as the number of bytes requested in the stackmap/patchpoint. In the future, we could provide a more accurate estimate by sharing some of the logic in AArch64::LowerSTACKMAP/PATCHPOINT. Fixes part of https://llvm.org/bugs/show_bug.cgi?id=28750 Differential Revision: https://reviews.llvm.org/D24073 llvm-svn: 281301
2016-09-13[X86] Remove masked shufpd/shufps intrinsics and autoupgrade to native ↵Craig Topper7-166/+144
vector shuffles. They were removed from clang previously but accidentally left in the backend. llvm-svn: 281300
2016-09-13[X86] Remove some dead intrinsics. They aren't implemented and clang doesn't ↵Craig Topper1-16/+0
reference them. llvm-svn: 281299
2016-09-13[Docs] Fix a broken link in the Kaleidoscope tutorial.Davide Italiano1-1/+1
Patch by: Alfred Perlstein <alfred@FreeBSD.org> llvm-svn: 281297
2016-09-13[LTO] Only expose the dataLayout string instead of the whole module.Davide Italiano1-4/+4
Differential Revision: https://reviews.llvm.org/D24494 llvm-svn: 281296
2016-09-13Revert "[Support][CommandLine] Add cl::getRegisteredSubcommands()"Zachary Turner3-56/+0
This reverts r281290, as it breaks unit tests. http://lab.llvm.org:8011/builders/clang-x86-windows-msvc2015/builds/303 llvm-svn: 281292
2016-09-13[Support][CommandLine] Add cl::getRegisteredSubcommands()Dean Michael Berris3-0/+56
This should allow users of the library to get a range to iterate through all the subcommands that are registered to the global parser. This allows users to define subcommands in libraries that self-register to have dispatch done at a different stage (like main). It allows for writing code like the following: for (auto *S : cl::getRegisteredSubcommands()) { if (*S) { // Dispatch on S->getName(). } } This change also contains tests that show this usage pattern. Reviewers: zturner, dblaikie, echristo Subscribers: llvm-commits, mehdi_amini Differential Revision: https://reviews.llvm.org/D24489 llvm-svn: 281290
2016-09-13[lib/LTO] Expose getModule() in lto::InputFile.Davide Italiano1-0/+4
lld will use this to get the datalayout string and emit a diagnostic if empty. llvm-svn: 281289
2016-09-13DebugInfo: New metadata representation for global variables.Peter Collingbourne159-796/+922
This patch reverses the edge from DIGlobalVariable to GlobalVariable. This will allow us to more easily preserve debug info metadata when manipulating global variables. Fixes PR30362. A program for upgrading test cases is attached to that bug. Differential Revision: http://reviews.llvm.org/D20147 llvm-svn: 281284
2016-09-13[DAG] Refactor BUILD_VECTOR combine to make it easier to extend. NFCI.Michael Kuperstein1-123/+156
This should make it easier to add cases that we currently don't cover, like supporting more kinds of type mismatches and more than 2 input vectors. llvm-svn: 281283
2016-09-13X86: Conditional tail calls should not have isBarrier = 1Hans Wennborg3-21/+62
That confuses e.g. machine basic block placement, which then doesn't realize that control can fall through a block that ends with a conditional tail call. Instead, isBranch=1 should be set. Also, mark EFLAGS as used by these instructions. llvm-svn: 281281
2016-09-13Temporarily Revert "[MC] Defer asm errors to post-statement failure" as it's ↵Eric Christopher16-517/+830
causing errors on the sanitizer bots. This reverts commit r281249. llvm-svn: 281280
2016-09-12[OptDiag] Add getHotness accessorAdam Nemet1-0/+1
llvm-svn: 281274
2016-09-12[LVI] Complete the abstract of the cache layer [NFCI]Philip Reames1-72/+94
Convert the previous introduced is-a relationship between the LVICache and LVIImple clases into a has-a relationship and hide all the implementation details of the cache from the lazy query layer. The only slightly concerning change here is removing the addition of a queried block into the SeenBlock set in LVIImpl::getBlockValue. As far as I can tell, this was effectively dead code. I think it *used* to be the case that getCachedValueInfo wasn't const and might end up inserting elements in the cache during lookup. That's no longer true and hasn't been for a while. I did fixup the const usage to make that more obvious. llvm-svn: 281272
2016-09-12add more tests for PR30273Sanjay Patel1-2/+32
llvm-svn: 281270
2016-09-12[ORC] Clang-format RPCSerialization.h.Lang Hames1-29/+26
llvm-svn: 281269
2016-09-12[ORC] Add some more documentation to RPCSerialization.h.Lang Hames1-21/+58
llvm-svn: 281268
2016-09-12[LVI] Sink a couple more cache manipulation routines into the cache itself ↵Philip Reames1-36/+45
[NFCI] The only interesting bit here is the refactor of the handle callback and even that's pretty straight-forward. llvm-svn: 281267
2016-09-12[LVI] Abstract out the actual cache logic [NFCI]Philip Reames1-89/+97
Seperate the caching logic from the implementation of the lazy analysis. For the moment, the lazy analysis impl has a is-a relationship with the cache; this will change to a has-a relationship shortly. This was done as two steps merely to keep the changes simple and the diff understandable. llvm-svn: 281266
2016-09-12Revert r281215, it caused PR30358.Nico Weber9-232/+26
llvm-svn: 281263
2016-09-12attempt to unbreak build after r281254Nico Weber1-0/+1
llvm-svn: 281262
2016-09-12[ORC] Add missing <thread> header to RPCSerialization.h.Lang Hames1-0/+1
llvm-svn: 281257
2016-09-12[ORC] Replace the serialize/deserialize function pair with a SerializationTraitsLang Hames4-167/+360
class. SerializationTraits provides serialize and deserialize methods corresponding to the earlier functions, but also provides a name for the type. In future, this name will be used to render function signatures as strings, which will in turn be used to negotiate and verify API support between RPC clients and servers. llvm-svn: 281254
2016-09-12Fix the bug introduced in r281252.Dehao Chen1-1/+1
llvm-svn: 281253
2016-09-12Lower consecutive select instructions correctly.Dehao Chen2-23/+119
Summary: If consecutive select instructions are lowered separately in CGP, it will introduce redundant condition check and branches that cannot be removed by later optimization phases. This patch lowers all consecutive select instructions at the same to to avoid inefficent code as demonstrated in https://llvm.org/bugs/show_bug.cgi?id=29095 Reviewers: davidxl Subscribers: vsk, llvm-commits Differential Revision: https://reviews.llvm.org/D24147 llvm-svn: 281252
2016-09-12[MC] Defer asm errors to post-statement failureNirav Dave16-830/+517
Allow errors to be deferred and emitted as part of clean up to simplify and shorten Assembly parser code. This will allow error messages to be emitted in helper functions and be modified by the caller which has better context. As part of this many minor cleanups to the Parser: * Unify parser cleanup on error * Add Workaround for incorrect return values in ParseDirective instances * Tighten checks on error-signifying return values for parser functions and fix in-tree TargetParsers to be more consistent with the changes. * Fix AArch64 test cases checking for spurious error messages that are now fixed. These changes should be backwards compatible with current Target Parsers so long as the error status are correctly returned in appropriate functions. Reviewers: rnk, majnemer Subscribers: aemerson, jyknight, llvm-commits Differential Revision: https://reviews.llvm.org/D24047 llvm-svn: 281249
2016-09-12[InstCombine] add test for PR30327Sanjay Patel1-0/+14
llvm-svn: 281248
2016-09-12[InstCombine] regenerate checksSanjay Patel1-4/+7
llvm-svn: 281247
2016-09-12AVX-512: Added a test for -O0 mode. NFC.Elena Demikhovsky1-0/+52
llvm-svn: 281246
2016-09-12AVX-512: Simplified masked_gather_scatter test. NFC.Elena Demikhovsky1-183/+6
llvm-svn: 281244
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