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Thomas Lively 8e3e56f2a3 [WebAssembly] Add wasm-specific vector shuffle builtin and intrinsic 
Summary:

Although using `__builtin_shufflevector` and the `shufflevector`
instruction works fine, they are not opaque to the optimizer. As a
result, DAGCombine can potentially reduce the number of shuffles and
change the shuffle masks. This is unexpected behavior for users of the
WebAssembly SIMD intrinsics who have crafted their shuffles to
optimize the code generated by engines. This patch solves the problem
by adding a new shuffle intrinsic that is opaque to the optimizers in
line with the decision of the WebAssembly SIMD contributors at
https://github.com/WebAssembly/simd/issues/196#issuecomment-622494748. In
the future we may implement custom DAG combines to properly optimize
shuffles and replace this solution.

Reviewers: aheejin, dschuff

Subscribers: sbc100, jgravelle-google, hiraditya, sunfish, cfe-commits, llvm-commits

Tags: #clang, #llvm

Differential Revision: https://reviews.llvm.org/D66983
 		2020-05-11 10:01:55 -07:00
..
PR40172.ll [WebAssembly][FastISel] Do not assume naive CmpInst lowering 2019-01-14 22:03:43 +00:00
PR40267.ll [LegalizeVectorTypes] Allow illegal indices when splitting extract_vector_elt 2019-01-31 00:35:37 +00:00
PR41149.ll [SelectionDAG] Add scalarization of ABS node (PR41149) 2019-03-21 11:18:54 +00:00
PR41841.ll [WebAssembly] Don't assume that zext/sext result is i32/i64 in fast isel (PR41841) 2019-05-13 19:40:18 +00:00
add-prototypes-conflict.ll [WebAssembly] Fix a typo in a test file name 2019-07-09 01:21:04 +00:00
add-prototypes.ll [WebAssembly] Make sret parameter work with AddMissingPrototypes 2019-07-09 02:10:33 +00:00
address-offsets.ll [WebAssembly] Limit PIC support to the Emscripten target 2019-06-05 20:01:01 +00:00
atomic-fence.ll [WebAssembly] Add atomic.fence instruction 2019-08-28 23:13:43 +00:00
atomic-fence.mir [WebAssembly] Replace all calls with generalized multivalue calls 2020-02-18 15:55:20 -08:00
atomic-mem-consistency.ll [WebAssembly] Remove uses of ThreadModel 2019-02-28 18:39:08 +00:00
atomic-rmw.ll [WebAssembly] Remove uses of ThreadModel 2019-02-28 18:39:08 +00:00
bulk-memory-intrinsics.ll [WebAssembly] Bulk memory intrinsics and builtins 2019-02-13 22:11:16 +00:00
bulk-memory.ll [WebAssembly] Restore defaults for stores per memop 2019-09-18 23:18:16 +00:00
byval.ll [WebAssembly] Replace all calls with generalized multivalue calls 2020-02-18 15:55:20 -08:00
call-pic.ll [WebAssembly] Replace all calls with generalized multivalue calls 2020-02-18 15:55:20 -08:00
call.ll [WebAssembly] Replace all calls with generalized multivalue calls 2020-02-18 15:55:20 -08:00
cfg-stackify-dbg-skip.ll [WebAssembly] Run ExplicitLocals pass after CFGStackify 2019-03-30 09:29:57 +00:00
cfg-stackify-dbg.mir [WebAssembly] Handle END_LOOP in unreachable BB in CFGStackify 2019-03-29 19:36:51 +00:00
cfg-stackify-eh.ll [WebAssembly] Fix block marker placing after fixUnwindMismatches 2020-05-05 02:06:47 -07:00
cfg-stackify.ll [WebAssembly] Emit br_table for most switch instructions 2019-04-23 21:30:30 +00:00
cfi.ll
…
clear-cache.ll Revert "Revert "Reland "[Support] make report_fatal_error `abort` instead of `exit`""" 2020-02-13 10:16:06 -08:00
comparisons-f32.ll [WebAssembly] Massive instruction renaming 2019-01-08 06:25:55 +00:00
comparisons-f64.ll [WebAssembly] Massive instruction renaming 2019-01-08 06:25:55 +00:00
comparisons-i32.ll [WebAssembly][FastISel] Do not assume naive CmpInst lowering 2019-01-14 22:03:43 +00:00
comparisons-i64.ll [WebAssembly][FastISel] Do not assume naive CmpInst lowering 2019-01-14 22:03:43 +00:00
conv-trap.ll [WebAssembly] Trapping fptoint builtins and intrinsics 2019-10-15 01:11:51 +00:00
conv.ll [WebAssembly] Massive instruction renaming 2019-01-08 06:25:55 +00:00
copysign-casts.ll [WebAssembly] Massive instruction renaming 2019-01-08 06:25:55 +00:00
cpus.ll Revert "Revert "Reland "[Support] make report_fatal_error `abort` instead of `exit`""" 2020-02-13 10:16:06 -08:00
custom-sections.ll [WebAssembly] Add languages from debug info to producers section 2019-01-18 02:47:48 +00:00
dbgvalue.ll
…
dead-vreg.ll [WebAssembly] replaced .param/.result by .functype 2018-11-19 17:10:36 +00:00
debugtest-opt.ll [WebAssembly] Add int32 DW_OP_WASM_location variant 2020-04-16 16:32:17 -07:00
divrem-constant.ll
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eh-labels.mir [WebAssembly] Replace all calls with generalized multivalue calls 2020-02-18 15:55:20 -08:00
eh-lsda.ll Reland "[WebAssembly] LSDA info generation" 2018-10-25 23:55:10 +00:00
exception.ll [WebAssembly] Replace all calls with generalized multivalue calls 2020-02-18 15:55:20 -08:00
explicit-locals.mir [WebAssembly] Make returns variadic 2019-10-09 21:42:08 +00:00
export-name.ll [WebAssembly] Add new `export_name` clang attribute for controlling wasm export names 2019-12-11 11:54:57 -08:00
f16.ll [WebAssembly] Replace all calls with generalized multivalue calls 2020-02-18 15:55:20 -08:00
f32.ll [WebAssembly] Replace all calls with generalized multivalue calls 2020-02-18 15:55:20 -08:00
f64.ll [WebAssembly] Replace all calls with generalized multivalue calls 2020-02-18 15:55:20 -08:00
fast-isel-br-i1.ll
…
fast-isel-i24.ll [WebAssembly] Massive instruction renaming 2019-01-08 06:25:55 +00:00
fast-isel-i256.ll [WebAssembly] replaced .param/.result by .functype 2018-11-19 17:10:36 +00:00
fast-isel-noreg.ll [WebAssembly] Update CodeGen test expectations after rL354697. NFC 2019-02-23 00:07:39 +00:00
fast-isel.ll [WebAssembly] Massive instruction renaming 2019-01-08 06:25:55 +00:00
frem.ll [WebAssembly] Replace all calls with generalized multivalue calls 2020-02-18 15:55:20 -08:00
func.ll [WebAssembly] replaced .param/.result by .functype 2018-11-19 17:10:36 +00:00
function-bitcasts-varargs.ll [WebAssembly] Update CodeGen test expectations after rL354697. NFC 2019-02-23 00:07:39 +00:00
function-bitcasts.ll [WebAssembly] Replace all calls with generalized multivalue calls 2020-02-18 15:55:20 -08:00
function-info.mir [WebAssembly] Make returns variadic 2019-10-09 21:42:08 +00:00
global.ll [WebAssembly] Replace all calls with generalized multivalue calls 2020-02-18 15:55:20 -08:00
global_dtors.ll [WebAssembly] Fix crash when @llvm.global_dtors is external 2019-03-01 00:12:13 +00:00
globl.ll
…
i32-load-store-alignment.ll Fix typo in comment 2019-01-09 14:20:20 +00:00
i32.ll [WebAssembly] Massive instruction renaming 2019-01-08 06:25:55 +00:00
i64-load-store-alignment.ll Fix typo in comment 2019-01-09 14:20:20 +00:00
i64.ll [WebAssembly] Massive instruction renaming 2019-01-08 06:25:55 +00:00
i128-returned.ll [WebAssembly] replaced .param/.result by .functype 2018-11-19 17:10:36 +00:00
i128.ll [WebAssembly] Update CodeGen test expectations after rL354697. NFC 2019-02-23 00:07:39 +00:00
ident.ll
…
immediates.ll [WebAssembly] replaced .param/.result by .functype 2018-11-19 17:10:36 +00:00
implicit-def.ll [WebAssembly] Disable MachineBlockPlacement pass 2019-03-05 20:35:34 +00:00
import-module.ll [WebAssembly] Add codegen support for the import_field attribute 2019-02-01 22:27:34 +00:00
indirect-import.ll Migrate function attribute "no-frame-pointer-elim"="false" to "frame-pointer"="none" as cleanups after D56351 2019-12-24 16:27:51 -08:00
indirectbr.ll [WebAssembly] Enable IndirectBrExpandPass 2019-07-03 23:54:06 +00:00
inline-asm-m.ll
…
inline-asm-roundtrip.ll [WebAssembly] Massive instruction renaming 2019-01-08 06:25:55 +00:00
inline-asm.ll [WebAssembly] Massive instruction renaming 2019-01-08 06:25:55 +00:00
inlineasm-output-template.ll [AsmPrinter] refactor to support %c w/ GlobalAddress' 2019-04-26 18:45:04 +00:00
irreducible-cfg-exceptions.ll [WebAssembly] Improve readability of irreducibility tests 2019-03-19 05:10:39 +00:00
irreducible-cfg.ll [WebAssembly] Optimize the number of routing blocks in FixIrreducibleCFG 2019-03-30 01:31:11 +00:00
irreducible-cfg.mir [WebAssembly] Optimize the number of routing blocks in FixIrreducibleCFG 2019-03-30 01:31:11 +00:00
legalize.ll [WebAssembly] Massive instruction renaming 2019-01-08 06:25:55 +00:00
libcalls.ll [WebAssembly] Replace all calls with generalized multivalue calls 2020-02-18 15:55:20 -08:00
lit.local.cfg
…
llround-conv-i32.ll [WebAssembly] Replace all calls with generalized multivalue calls 2020-02-18 15:55:20 -08:00
load-ext-atomic.ll [WebAssembly] Massive instruction renaming 2019-01-08 06:25:55 +00:00
load-ext.ll
…
load-store-i1.ll
…
load-store-pic.ll [WebAssembly] Limit PIC support to the Emscripten target 2019-06-05 20:01:01 +00:00
load.ll [WebAssembly] Massive instruction renaming 2019-01-08 06:25:55 +00:00
lower-em-ehsjlj-options.ll [WebAssembly] Replace all calls with generalized multivalue calls 2020-02-18 15:55:20 -08:00
lower-em-exceptions-resume-only.ll [WebAssembly] Fix resume-only case in Emscripten EH 2020-01-23 18:13:52 -08:00
lower-em-exceptions-whitelist.ll [WebAssembly] Fix conflict between ret legalization and sjlj 2019-08-05 21:36:09 +00:00
lower-em-exceptions.ll [WebAssembly] Fix conflict between ret legalization and sjlj 2019-08-05 21:36:09 +00:00
lower-em-sjlj-alias.ll [WebAssembly] Compare functions by names in Emscripten Sjlj 2019-09-03 22:26:49 +00:00
lower-em-sjlj-debuginfo.ll [WebAssembly] Use dummy debug info in Emscripten SjLj 2020-04-09 18:44:50 -07:00
lower-em-sjlj-sret.ll [WebAssembly] Combine emscripten SjLj tests 2019-08-26 21:41:17 +00:00
lower-em-sjlj.ll [WebAssembly] Use dummy debug info in Emscripten SjLj 2020-04-09 18:44:50 -07:00
lower-global-dtors.ll [WebAssembly] Fix the order of destructors in the LowerGlobalDtors pass. 2020-03-26 16:19:02 -07:00
main-declaration.ll [WebAssembly] Update CodeGen test expectations after rL354697. NFC 2019-02-23 00:07:39 +00:00
main-no-args.ll [WebAssembly] Update CodeGen test expectations after rL354697. NFC 2019-02-23 00:07:39 +00:00
main-three-args.ll [WebAssembly] Re-enable main-function signature rewriting 2019-01-29 10:53:42 +00:00
main-with-args.ll [WebAssembly] Re-enable main-function signature rewriting 2019-01-29 10:53:42 +00:00
mem-intrinsics.ll [WebAssembly] Replace all calls with generalized multivalue calls 2020-02-18 15:55:20 -08:00
memory-addr32.ll [WebAssembly] Remove tests for old intrinsics. 2019-01-14 18:25:29 +00:00
muloti4.ll [WebAssembly] Update CodeGen test expectations after rL354697. NFC 2019-02-23 00:07:39 +00:00
multi-return.ll [WebAssembly] Track frame registers through VReg and local allocation 2020-01-17 17:23:56 -08:00
multivalue-stackify.ll [WebAssembly] Fix RegStackify and ExplicitLocals to handle multivalue 2020-02-18 14:56:09 -08:00
multivalue-stackify.py [WebAssembly] Fix RegStackify and ExplicitLocals to handle multivalue 2020-02-18 14:56:09 -08:00
multivalue.ll [WebAssembly] Replace all calls with generalized multivalue calls 2020-02-18 15:55:20 -08:00
mutable-globals.ll [WebAssembly] Add mutable globals feature 2019-03-29 22:00:18 +00:00
negative-base-reg.ll Migrate function attribute "no-frame-pointer-elim"="false" to "frame-pointer"="none" as cleanups after D56351 2019-12-24 16:27:51 -08:00
null-streamer.ll [WebAssembly] Add null streamer support 2018-11-18 11:58:47 +00:00
offset-atomics.ll Revert "Revert "Reland "[Support] make report_fatal_error `abort` instead of `exit`""" 2020-02-13 10:16:06 -08:00
offset-fastisel.ll [WebAssembly] Massive instruction renaming 2019-01-08 06:25:55 +00:00
offset-folding.ll [WebAssembly] replaced .param/.result by .functype 2018-11-19 17:10:36 +00:00
offset.ll [SelectionDAGBuilder] Stop setting alignment to one for hidden sret values 2020-05-04 14:44:39 +01:00
phi.ll [WebAssembly] Make LBB markers not affected by test order 2019-04-23 21:17:03 +00:00
reference-types.ll [WebAssembly] Add reference types target feature 2020-01-24 14:26:27 -08:00
reg-argument.mir [WebAssembly] Make returns variadic 2019-10-09 21:42:08 +00:00
reg-copy.mir [WebAssembly] Make returns variadic 2019-10-09 21:42:08 +00:00
reg-stackify.ll [WebAssembly] Replace all calls with generalized multivalue calls 2020-02-18 15:55:20 -08:00
return-address-emscripten.ll [WebAssembly] Replace all calls with generalized multivalue calls 2020-02-18 15:55:20 -08:00
return-address-unknown.ll [WebAssembly] Implement __builtin_return_address for emscripten 2019-05-23 01:24:01 +00:00
return-int32.ll [WebAssembly] Massive instruction renaming 2019-01-08 06:25:55 +00:00
return-void.ll [WebAssembly] replaced .param/.result by .functype 2018-11-19 17:10:36 +00:00
returned.ll [WebAssembly] Replace all calls with generalized multivalue calls 2020-02-18 15:55:20 -08:00
select.ll [WebAssembly] Fix miscompile of select with and 2019-11-15 16:22:01 -08:00
signext-arg.ll [WebAssembly] Replace all calls with generalized multivalue calls 2020-02-18 15:55:20 -08:00
signext-inreg.ll [WebAssembly] Massive instruction renaming 2019-01-08 06:25:55 +00:00
signext-zeroext.ll [WebAssembly] Update CodeGen test expectations after rL354697. NFC 2019-02-23 00:07:39 +00:00
simd-arith.ll [WebAssembly] SIMD integer abs instructions 2020-03-19 17:25:58 -07:00
simd-bitcasts.ll [WebAssembly] Enable recently implemented SIMD operations 2020-02-04 18:36:32 -08:00
simd-build-pair.ll [WebAssembly] Enable recently implemented SIMD operations 2020-02-04 18:36:32 -08:00
simd-build-vector.ll [WebAssembly] v8x16.swizzle and rewrite BUILD_VECTOR lowering 2019-10-09 17:39:19 +00:00
simd-comparisons.ll [WebAssembly] Enable recently implemented SIMD operations 2020-02-04 18:36:32 -08:00
simd-conversions.ll [WebAssembly] Renumber SIMD opcodes 2020-05-01 17:20:49 -07:00
simd-extended-extract.ll [WebAssembly] Enable recently implemented SIMD operations 2020-02-04 18:36:32 -08:00
simd-illegal-signext.ll [WebAssembly] Implement ReplaceNodeResults to fix a SIMD crash 2019-05-23 18:09:26 +00:00
simd-intrinsics.ll [WebAssembly] Add wasm-specific vector shuffle builtin and intrinsic 2020-05-11 10:01:55 -07:00
simd-load-splat.ll Reland "[WebAssembly] Handle multiple loads of splatted loads" 2019-10-31 20:02:24 -07:00
simd-load-store-alignment.ll [WebAssembly] Add unimplemented-simd128 subtarget feature 2019-01-10 22:32:11 +00:00
simd-nested-shuffles.ll [WebAssembly] Fix invalid machine instrs in -O0, verify in tests 2018-12-21 06:58:15 +00:00
simd-noopt.ll [WebAssembly][NFC] Elaborate on simd-noopt test comment 2019-01-02 20:43:08 +00:00
simd-offset.ll [WebAssembly] Enable recently implemented SIMD operations 2020-02-04 18:36:32 -08:00
simd-reductions.ll [WebAssembly] Optimize ISel for SIMD Boolean reductions 2019-06-19 00:02:13 +00:00
simd-scalar-to-vector.ll [WebAssembly] Enable recently implemented SIMD operations 2020-02-04 18:36:32 -08:00
simd-select.ll [WebAssembly] Fix select of and (PR40805) 2019-02-23 18:59:01 +00:00
simd-sext-inreg.ll [WebAssembly] Simplify extract_vector lowering 2020-02-25 13:54:48 -08:00
simd-shift-unroll.ll [WebAssembly] Fix SIMD shift unrolling to avoid assertion failure 2020-03-12 12:20:14 -07:00
simd-unsupported.ll [WebAssembly] Replace all calls with generalized multivalue calls 2020-02-18 15:55:20 -08:00
simd.ll [WebAssembly] Simplify extract_vector lowering 2020-02-25 13:54:48 -08:00
stack-alignment.ll [WebAssembly] Update CodeGen test expectations after rL354697. NFC 2019-02-23 00:07:39 +00:00
stack-insts.ll [WebAssembly] Fix assembler parsing of br_table. 2018-12-17 22:04:44 +00:00
stack-protector.ll Use SETNE directly rather than SUB/SETNE 0 for stack guard check 2020-02-18 13:21:26 +00:00
store-trunc-atomic.ll
…
store-trunc.ll
…
store.ll [WebAssembly] Massive instruction renaming 2019-01-08 06:25:55 +00:00
swiftcc.ll [WebAssembly] Support swiftself and swifterror for WebAssembly target 2020-03-19 17:39:52 -07:00
switch.ll [WebAssembly] Make LBB markers not affected by test order 2019-04-23 21:17:03 +00:00
tailcall.ll [WebAssembly] Replace all calls with generalized multivalue calls 2020-02-18 15:55:20 -08:00
target-features-tls.ll [WebAssembly] Disallow 'shared-mem' rather than 'atomics' 2020-05-08 13:52:39 -07:00
target-features.ll [WebAssembly] Update bleeding-edge CPU features 2020-01-24 14:27:35 -08:00
tls-general-dynamic.ll Revert "Revert "Reland "[Support] make report_fatal_error `abort` instead of `exit`""" 2020-02-13 10:16:06 -08:00
tls-local-exec.ll [WebAssembly] Compile all TLS on Emscripten as local-exec 2019-07-16 22:22:08 +00:00
umulo-128-legalisation-lowering.ll [WebAssembly] Update CodeGen test expectations after rL354697. NFC 2019-02-23 00:07:39 +00:00
umulo-i64.ll [WebAssembly] Update CodeGen test expectations after rL354697. NFC 2019-02-23 00:07:39 +00:00
unreachable.ll [WebAssembly] Update CodeGen test expectations after rL354697. NFC 2019-02-23 00:07:39 +00:00
unsupported-function-bitcasts.ll [WebAssembly] Replace all calls with generalized multivalue calls 2020-02-18 15:55:20 -08:00
unused-argument.ll [WebAssembly] Replace all calls with generalized multivalue calls 2020-02-18 15:55:20 -08:00
userstack.ll [WebAssembly] Update CodeGen test expectations after rL354697. NFC 2019-02-23 00:07:39 +00:00
varargs.ll [WebAssembly] Properly align fp128 arguments in outgoing varargs arguments 2019-02-26 05:20:19 +00:00
vector-sdiv.ll
…
vtable.ll [WebAssembly] Remove uses of ThreadModel 2019-02-28 18:39:08 +00:00
wasmehprepare.ll [WebAssembly] Fix wasm.lsda() optimization in WasmEHPrepare 2020-04-04 07:02:50 -07:00