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* [WebAssembly] Make returns variadicThomas Lively2019-10-091-1/+2
| | | | | | | | | | | | | | | | | | Summary: This is necessary and sufficient to get simple cases of multiple return working with multivalue enabled. More complex cases will require block and loop signatures to be generalized to potentially be type indices as well. Reviewers: aheejin, dschuff Subscribers: sbc100, jgravelle-google, hiraditya, sunfish, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D68684 llvm-svn: 374235
* [WebAssembly] Rename except_ref type to exnrefHeejin Ahn2019-07-151-3/+3
| | | | | | | | | | | | | | | | | | | Summary: We agreed to rename `except_ref` to `exnref` for consistency with other reference types in https://github.com/WebAssembly/exception-handling/issues/79. This also renames WebAssemblyInstrExceptRef.td to WebAssemblyInstrRef.td in order to use the file for other reference types in future. Reviewers: dschuff Subscribers: sbc100, jgravelle-google, hiraditya, sunfish, jfb, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D64703 llvm-svn: 366145
* [WebAssembly] tablegen: distinguish float/int immediate operands.Wouter van Oortmerssen2019-07-081-2/+13
| | | | | | | | | | | | | | | | | Summary: Before, they were one category of operands which could cause crashes in non-sensical combinations, e.g. "f32.const symbol". Now these are forced to be an error. Reviewers: dschuff Subscribers: sbc100, jgravelle-google, aheejin, sunfish, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D64039 llvm-svn: 365351
* [WebAssembly] Implement tail calls and unify tablegen call classesThomas Lively2019-06-261-0/+3
| | | | | | | | | | | | | | | | | Summary: Implements direct and indirect tail calls enabled by the 'tail-call' feature in both DAG ISel and FastISel. Updates existing call tests and adds new tests including a binary encoding test. Reviewers: aheejin Subscribers: dschuff, sbc100, jgravelle-google, hiraditya, sunfish, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D62877 llvm-svn: 364445
* [WebAssembly] Add multivalue and tail-call target featuresThomas Lively2019-05-231-7/+7
| | | | | | | | | | | | | | | | Summary: These features will both be implemented soon, so I thought I would save time by adding the boilerplate for both of them at the same time. Reviewers: aheejin Subscribers: dschuff, sbc100, jgravelle-google, hiraditya, sunfish, cfe-commits, llvm-commits Tags: #clang, #llvm Differential Revision: https://reviews.llvm.org/D62047 llvm-svn: 361516
* [WebAssembly] Initial implementation of PIC code generationSam Clegg2019-03-261-10/+28
| | | | | | | | | | | | | | | | | | | | | | | | This change implements lowering of references global symbols in PIC mode. This change implements lowering of global references in PIC mode using a new @GOT reference type. @GOT references can be used with function or data symbol names combined with the get_global instruction. In this case the linker will insert the wasm global that stores the address of the symbol (either in memory for data symbols or in the wasm table for function symbols). For now I'm continuing to use the R_WASM_GLOBAL_INDEX_LEB relocation type for this type of reference which means that this relocation type can refer to either a global or a function or data symbol. We could choose to introduce specific relocation types for GOT entries in the future. See the current dynamic linking proposal: https://github.com/WebAssembly/tool-conventions/blob/master/DynamicLinking.md Differential Revision: https://reviews.llvm.org/D54647 llvm-svn: 357022
* [WebAssembly] Tidy up `let` statements in .td files (NFC)Heejin Ahn2019-02-061-5/+4
| | | | | | | | | | | | | | | | | Summary: - Delete {} for one-line `let` statements - Don't indent within `let` blocks - Add comments after `let` block's closing braces Reviewers: tlively Subscribers: dschuff, sbc100, jgravelle-google, sunfish, jfb, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D57730 llvm-svn: 353248
* [WebAssembly] memory.copyThomas Lively2019-02-051-0/+1
| | | | | | | | | | | | Summary: Depends on D57495. Reviewers: aheejin, dschuff Subscribers: sbc100, jgravelle-google, hiraditya, sunfish Differential Revision: https://reviews.llvm.org/D57498 llvm-svn: 353127
* [WebAssembly] Add bulk memory target featureThomas Lively2019-01-311-16/+24
| | | | | | | | | | | | Summary: Also clean up some preexisting target feature code. Reviewers: aheejin Subscribers: dschuff, sbc100, jgravelle-google, hiraditya, sunfish, jfb Differential Revision: https://reviews.llvm.org/D57495 llvm-svn: 352793
* [WebAssembly] Exception handling: Switch to the new proposalHeejin Ahn2019-01-301-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: This switches the EH implementation to the new proposal: https://github.com/WebAssembly/exception-handling/blob/master/proposals/Exceptions.md (The previous proposal was https://github.com/WebAssembly/exception-handling/blob/master/proposals/old/Exceptions.md) - Instruction changes - Now we have one single `catch` instruction that returns a except_ref value - `throw` now can take variable number of operations - `rethrow` does not have 'depth' argument anymore - `br_on_exn` queries an except_ref to see if it matches the tag and branches to the given label if true. - `extract_exception` is a pseudo instruction that simulates popping values from wasm stack. This is to make `br_on_exn`, a very special instruction, work: `br_on_exn` puts values onto the stack only if it is taken, and the # of values can vay depending on the tag. - Now there's only one `catch` per `try`, this patch removes all special handling for terminate pad with a call to `__clang_call_terminate`. Before it was the only case there are two catch clauses (a normal `catch` and `catch_all` per `try`). - Make `rethrow` act as a terminator like `throw`. This splits BB after `rethrow` in WasmEHPrepare, and deletes an unnecessary `unreachable` after `rethrow` in LateEHPrepare. - Now we stop at all catchpads (because we add wasm `catch` instruction that catches all exceptions), this creates new `findWasmUnwindDestinations` function in SelectionDAGBuilder. - Now we use `br_on_exn` instrution to figure out if an except_ref matches the current tag or not, LateEHPrepare generates this sequence for catch pads: ``` catch block i32 br_on_exn $__cpp_exception end_block extract_exception ``` - Branch analysis for `br_on_exn` in WebAssemblyInstrInfo - Other various misc. changes to switch to the new proposal. Reviewers: dschuff Subscribers: sbc100, jgravelle-google, sunfish, llvm-commits Differential Revision: https://reviews.llvm.org/D57134 llvm-svn: 352598
* Update the file headers across all of the LLVM projects in the monorepoChandler Carruth2019-01-191-4/+3
| | | | | | | | | | | | | | | | | to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
* [WebAssembly] Add unimplemented-simd128 subtarget featureThomas Lively2019-01-101-1/+3
| | | | | | | | | | | | | | Summary: This is a third attempt, but this time we have vetted it on Windows first. The previous errors were due to an uninitialized class member. Reviewers: aheejin Subscribers: dschuff, sbc100, jgravelle-google, sunfish, jfb, llvm-commits Differential Revision: https://reviews.llvm.org/D56560 llvm-svn: 350901
* Revert "[WebAssembly] Add simd128-unimplemented subtarget feature"Thomas Lively2019-01-101-3/+1
| | | | | | This reverts rL350791. llvm-svn: 350795
* [WebAssembly] Add simd128-unimplemented subtarget featureThomas Lively2019-01-101-1/+3
| | | | | | | | | | This is a second attempt at r350778, which was reverted in r350789. The only change is that the unimplemented-simd128 feature has been renamed simd128-unimplemented, since naming it unimplemented-simd128 somehow made the simd128 feature flag enable the unimplemented-simd128 feature on Windows. llvm-svn: 350791
* Revert "[WebAssembly] Add unimplemented-simd128 subtarget feature"Thomas Lively2019-01-101-3/+1
| | | | | | This reverts L350778. llvm-svn: 350789
* [WebAssembly] Add unimplemented-simd128 subtarget featureThomas Lively2019-01-091-1/+3
| | | | | | | | | | | | | | | Summary: This replaces the old ad-hoc -wasm-enable-unimplemented-simd flag. Also makes the new unimplemented-simd128 feature imply the simd128 feature. Reviewers: aheejin, dschuff Subscribers: sbc100, jgravelle-google, sunfish, llvm-commits, alexcrichton Differential Revision: https://reviews.llvm.org/D56501 llvm-svn: 350778
* [WebAssembly] Massive instruction renamingThomas Lively2019-01-081-23/+23
| | | | | | | | | | | | | | | Summary: An automated renaming of all the instructions listed at https://github.com/WebAssembly/spec/issues/884#issuecomment-426433329 as well as some similarly-named identifiers. Reviewers: aheejin, dschuff, aardappel Subscribers: sbc100, jgravelle-google, eraman, sunfish, jfb, llvm-commits Differential Revision: https://reviews.llvm.org/D56338 llvm-svn: 350609
* [WebAssembly] Gate unimplemented SIMD ops on flagThomas Lively2018-12-201-0/+1
| | | | | | | | | | | | | | | Summary: Gates v128.const, f32x4.sqrt, f32x4.div, i8x16.extract_lane_u, and i16x8.extract_lane_u on the --wasm-enable-unimplemented-simd flag, since these ops are not implemented yet in V8. Reviewers: aheejin, dschuff Subscribers: sbc100, jgravelle-google, sunfish, llvm-commits Differential Revision: https://reviews.llvm.org/D55904 llvm-svn: 349720
* [WebAssembly] Add support for the event sectionHeejin Ahn2018-11-141-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: This adds support for the 'event section' specified in the exception handling proposal. (This was named 'exception section' first, but later renamed to 'event section' to take possibilities of other kinds of events into consideration. But currently we only store exception info in this section.) The event section is added between the global section and the export section. This is for ease of validation per request of the V8 team. This patch: - Creates the event symbol type, which is a weak symbol - Makes 'throw' instruction take the event symbol '__cpp_exception' - Adds relocation support for events - Adds WasmObjectWriter / WasmObjectFile (Reader) support - Adds obj2yaml / yaml2obj support - Adds '.eventtype' printing support Reviewers: dschuff, sbc100, aardappel Subscribers: jgravelle-google, sunfish, llvm-commits Differential Revision: https://reviews.llvm.org/D54096 llvm-svn: 346825
* Reland "[WebAssembly] LSDA info generation"Heejin Ahn2018-10-251-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: This adds support for LSDA (exception table) generation for wasm EH. Wasm EH mostly follows the structure of Itanium-style exception tables, with one exception: a call site table entry in wasm EH corresponds to not a call site but a landing pad. In wasm EH, the VM is responsible for stack unwinding. After an exception occurs and the stack is unwound, the control flow is transferred to wasm 'catch' instruction by the VM, after which the personality function is called from the compiler-generated code. (Refer to WasmEHPrepare pass for more information on this part.) This patch: - Changes wasm.landingpad.index intrinsic to take a token argument, to make this 1:1 match with a catchpad instruction - Stores landingpad index info and catch type info MachineFunction in before instruction selection - Lowers wasm.lsda intrinsic to an MCSymbol pointing to the start of an exception table - Adds WasmException class with overridden methods for table generation - Adds support for LSDA section in Wasm object writer Reviewers: dschuff, sbc100, rnk Subscribers: mgorny, jgravelle-google, sunfish, llvm-commits Differential Revision: https://reviews.llvm.org/D52748 llvm-svn: 345345
* [WebAssembly][NFC] Remove WebAssemblyStackifier TableGen backendThomas Lively2018-10-221-0/+13
| | | | | | | | | | | | | | | | Summary: Replace its functionality with a TableGen InstrInfo relational instruction mapping. Although arguably more complex than the TableGen backend, the relational mapping is a smaller maintenance burden than a TableGen backend. Reviewers: aardappel, aheejin, dschuff Subscribers: mgorny, sbc100, jgravelle-google, sunfish, llvm-commits Differential Revision: https://reviews.llvm.org/D53307 llvm-svn: 344962
* Revert "[WebAssembly] LSDA info generation"Krasimir Georgiev2018-10-161-2/+0
| | | | | | | | This reverts commit r344575. Newly introduced test eh-lsda.ll.test fails with use-after-free under ASAN build. llvm-svn: 344639
* [WebAssembly] LSDA info generationHeejin Ahn2018-10-161-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: This adds support for LSDA (exception table) generation for wasm EH. Wasm EH mostly follows the structure of Itanium-style exception tables, with one exception: a call site table entry in wasm EH corresponds to not a call site but a landing pad. In wasm EH, the VM is responsible for stack unwinding. After an exception occurs and the stack is unwound, the control flow is transferred to wasm 'catch' instruction by the VM, after which the personality function is called from the compiler-generated code. (Refer to WasmEHPrepare pass for more information on this part.) This patch: - Changes wasm.landingpad.index intrinsic to take a token argument, to make this 1:1 match with a catchpad instruction - Stores landingpad index info and catch type info MachineFunction in before instruction selection - Lowers wasm.lsda intrinsic to an MCSymbol pointing to the start of an exception table - Adds WasmException class with overridden methods for table generation - Adds support for LSDA section in Wasm object writer Reviewers: dschuff, sbc100, rnk Subscribers: mgorny, jgravelle-google, sunfish, llvm-commits Differential Revision: https://reviews.llvm.org/D52748 llvm-svn: 344575
* [WebAssembly][NFC] Unify ARGUMENT classesThomas Lively2018-10-131-9/+9
| | | | | | | | | | Reviewers: aheejin, dschuff Subscribers: sbc100, jgravelle-google, sunfish, llvm-commits Differential Revision: https://reviews.llvm.org/D53172 llvm-svn: 344436
* [WebAssembly][NFC] Remove repetition of Defs = [ARGUMENTS] (fixed)Thomas Lively2018-10-111-5/+2
| | | | llvm-svn: 344287
* [WebAssembly] Revert rL344180, which was breaking expensive checksThomas Lively2018-10-111-2/+5
| | | | llvm-svn: 344280
* [WebAssembly][NFC] Remove repetition of Defs = [ARGUMENTS]Thomas Lively2018-10-101-5/+2
| | | | | | | | | | | | | Summary: By moving that line into the `I` multiclass. Reviewers: aheejin Subscribers: dschuff, sbc100, jgravelle-google, sunfish, llvm-commits Differential Revision: https://reviews.llvm.org/D53093 llvm-svn: 344180
* [WebAssembly] Improve readability of SIMD instructions (NFC)Heejin Ahn2018-10-091-13/+0
| | | | | | | | | | | | | | | | Summary: - Categorize instructions into the categories as in the SIMD spec - Move SIMD-related definition to WebAssemblyInstrSIMD.td - Put definition and use of patterns together - Add newlines here and there Reviewers: tlively Subscribers: dschuff, sbc100, jgravelle-google, sunfish, llvm-commits Differential Revision: https://reviews.llvm.org/D53045 llvm-svn: 344086
* [WebAssembly] v128.constThomas Lively2018-08-211-0/+12
| | | | | | | | | | | | | | | | Summary: This CL implements v128.const for each vector type. New operand types are added to ensure the vector contents can be serialized without LEB encoding. Tests are added for instruction selection, encoding, assembly and disassembly. Reviewers: aheejin, dschuff, aardappel Subscribers: sbc100, jgravelle-google, sunfish, llvm-commits Differential Revision: https://reviews.llvm.org/D50873 llvm-svn: 340336
* [WebAssembly] Update SIMD binary arithmeticDerek Schuff2018-08-071-0/+2
| | | | | | | | | | | | Add missing SIMD types (v2f64) and binary ops. Also adds tablegen support for automatically prepending prefix byte to SIMD opcodes. Differential Revision: https://reviews.llvm.org/D50292 Patch by Thomas Lively llvm-svn: 339186
* [WebAssembly] Modified tablegen defs to have 2 parallel instuction sets.Wouter van Oortmerssen2018-06-181-31/+46
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Summary: One for register based, much like the existing definitions, and one for stack based (suffix _S). This allows us to use registers in most of LLVM (which works better), and stack based in MC (which results in a simpler and more readable assembler / disassembler). Tried to keep this change as small as possible while passing tests, follow-up commit will: - Add reg->stack conversion in MI. - Fix asm/disasm in MC to be stack based. - Fix emitter to be stack based. tests passing: llvm-lit -v `find test -name WebAssembly` test/CodeGen/WebAssembly test/MC/WebAssembly test/MC/Disassembler/WebAssembly test/DebugInfo/WebAssembly test/CodeGen/MIR/WebAssembly test/tools/llvm-objdump/WebAssembly Reviewers: dschuff, sbc100, jgravelle-google, sunfish Subscribers: aheejin, JDevlieghere, llvm-commits Differential Revision: https://reviews.llvm.org/D48183 llvm-svn: 334985
* [WebAssembly] Fix .td files after rL333900Sam Clegg2018-06-041-15/+15
| | | | | | Differential Revision: https://reviews.llvm.org/D47727 llvm-svn: 333928
* Remove \brief commands from doxygen comments.Adrian Prantl2018-05-011-1/+1
| | | | | | | | | | | | | | | | We've been running doxygen with the autobrief option for a couple of years now. This makes the \brief markers into our comments redundant. Since they are a visual distraction and we don't want to encourage more \brief markers in new code either, this patch removes them all. Patch produced by for i in $(git grep -l '\\brief'); do perl -pi -e 's/\\brief //g' $i & done Differential Revision: https://reviews.llvm.org/D46290 llvm-svn: 331272
* [WebAssembly] Add except_ref as a first-class typeHeejin Ahn2018-03-081-0/+3
| | | | | | | | | | | | Summary: Add except_ref as a first-class type, according to the [[https://github.com/WebAssembly/exception-handling/blob/master/proposals/Level-1.md | Level 1 exception handling proposal ]]. Reviewers: dschuff Subscribers: jfb, sbc100, llvm-commits Differential Revision: https://reviews.llvm.org/D43706 llvm-svn: 326985
* [WebAssembly] Add exception handling option and featureHeejin Ahn2018-02-241-0/+10
| | | | | | | | | | | | | | Summary: Add a llc command line option and WebAssembly architecture feature for exception handling. Reviewers: dschuff Subscribers: jfb, sbc100, jgravelle-google, sunfish, llvm-commits Differential Revision: https://reviews.llvm.org/D43683 llvm-svn: 326004
* [WebAssembly] Make sign-extension opcodes a distinct feature.Dan Gohman2018-01-191-0/+8
| | | | | | | | | | Sign-extension opcodes have been split into a separate proposal from the main threads proposal, so switch them to their own target feature. See: https://github.com/WebAssembly/sign-extension-ops llvm-svn: 322966
* [WebAssembly] Fix trapping behavior in fptosi/fptoui.Dan Gohman2017-11-281-0/+8
| | | | | | | | | | | | This adds code to protect WebAssembly's `trunc_s` family of opcodes from values outside their domain. Even though such conversions have full undefined behavior in C/C++, LLVM IR's `fptosi` and `fptoui` do not, and only return undef. This also implements the proposed non-trapping float-to-int conversion feature and uses that instead when available. llvm-svn: 319128
* [WebAssembly] Add target feature for atomicsDerek Schuff2017-08-301-0/+2
| | | | | | | | | | Summary: This tracks the WebAssembly threads feature proposal at https://github.com/WebAssembly/threads/blob/master/proposals/threads/Overview.md Differential Revision: https://reviews.llvm.org/D37300 llvm-svn: 312145
* Add extra operand to CALLSEQ_START to keep frame part set up previouslySerge Pavlov2017-05-091-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Using arguments with attribute inalloca creates problems for verification of machine representation. This attribute instructs the backend that the argument is prepared in stack prior to CALLSEQ_START..CALLSEQ_END sequence (see http://llvm.org/docs/InAlloca.htm for details). Frame size stored in CALLSEQ_START in this case does not count the size of this argument. However CALLSEQ_END still keeps total frame size, as caller can be responsible for cleanup of entire frame. So CALLSEQ_START and CALLSEQ_END keep different frame size and the difference is treated by MachineVerifier as stack error. Currently there is no way to distinguish this case from actual errors. This patch adds additional argument to CALLSEQ_START and its target-specific counterparts to keep size of stack that is set up prior to the call frame sequence. This argument allows MachineVerifier to calculate actual frame size associated with frame setup instruction and correctly process the case of inalloca arguments. The changes made by the patch are: - Frame setup instructions get the second mandatory argument. It affects all targets that use frame pseudo instructions and touched many files although the changes are uniform. - Access to frame properties are implemented using special instructions rather than calls getOperand(N).getImm(). For X86 and ARM such replacement was made previously. - Changes that reflect appearance of additional argument of frame setup instruction. These involve proper instruction initialization and methods that access instruction arguments. - MachineVerifier retrieves frame size using method, which reports sum of frame parts initialized inside frame instruction pair and outside it. The patch implements approach proposed by Quentin Colombet in https://bugs.llvm.org/show_bug.cgi?id=27481#c1. It fixes 9 tests failed with machine verifier enabled and listed in PR27481. Differential Revision: https://reviews.llvm.org/D32394 llvm-svn: 302527
* [WebAssembly] Basic support for Wasm object file encoding.Dan Gohman2017-02-241-0/+3
| | | | | | | | | With the "wasm32-unknown-unknown-wasm" triple, this allows writing out simple wasm object files, and is another step in a larger series toward migrating from ELF to general wasm object support. Note that this code and the binary format itself is still experimental. llvm-svn: 296190
* [WebAssembly] Add instruction definitions for drop and get/set_global.Dan Gohman2017-02-021-0/+15
| | | | llvm-svn: 293922
* [WebAssembly] Annotate call and load/store immediates.Dan Gohman2016-12-231-0/+6
| | | | | | These will be used to guide the binary encoding of these immediates. llvm-svn: 290412
* [WebAssembly] Implement more WebAssembly binary encoding.Dan Gohman2016-10-241-7/+0
| | | | | | | | | | | | This changes locals from being declared by the emitLocal hook in WebAssemblyTargetStreamer, rather than with an instruction. After exploring the infastructure in LLVM more, this seems to make more sense since declaring locals doesn't use an encoded opcode. This also adds more 0xd opcodes, type encodings, and miscellaneous binary encoding bits. llvm-svn: 285040
* [WebAssembly] Update opcode values according to recent spec changes.Dan Gohman2016-10-241-7/+7
| | | | | | This corresponds to the "0xd" opcode renumbering. llvm-svn: 285014
* [WebAssembly] Add an option to make get_local/set_local explicit.Dan Gohman2016-10-241-18/+50
| | | | | | | | | | This patch adds a pass, controlled by an option and off by default for now, for making implicit get_local/set_local explicit. This simplifies emitting wasm with MC. Differential Revision: https://reviews.llvm.org/D25836 llvm-svn: 285009
* [WebAssemby] Implement block signatures.Dan Gohman2016-10-061-0/+6
| | | | | | | | | Per spec changes, this implements block signatures, and adds just enough logic to produce correct block signatures at the ends of functions. Differential Revision: https://reviews.llvm.org/D25144 llvm-svn: 283503
* [WebAssembly] Add binary-encoding opcode values to instruction descriptions.Dan Gohman2016-10-051-2/+8
| | | | llvm-svn: 283389
* [WebAssembly] Rename OPERAND_FP32IMM to OPERAND_F32IMM.Dan Gohman2016-10-031-2/+2
| | | | | | | WebAssembly documentation consistently says "f32" rather than "fp32" to describe 32-bit floating-point. llvm-svn: 283146
* [WebAssembly] Initial SIMD128 support.Derek Schuff2016-08-021-0/+11
| | | | | | | | | | | | | | Kicks off the implementation of wasm SIMD128 support (spec: https://github.com/stoklund/portable-simd/blob/master/portable-simd.md), adding support for add, sub, mul for i8x16, i16x8, i32x4, and f32x4. The spec is WIP, and might change in the near future. Patch by João Porto Differential Revision: https://reviews.llvm.org/D22686 llvm-svn: 277543
* [WebAssembly] Mark COPY_LOCAL and TEE_LOCAL instructions has having no side ↵Dan Gohman2016-05-161-0/+2
| | | | | | effects. llvm-svn: 269683
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