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Ng Zhi An 71df28cb63 [x64] Optimize F64x2PromoteLowF32x4 with S128Load64Zero 
When the input to F64x2PromoteLowF32x4 is a S128Load64Zero, we can skip
the load + promote, and promote directly with a memory operand. The
tricky bit here is that on systems that rely on OOB trap handling, the
load is not eliminatable, so we always visit the S128Load64Zero, even
though after instruction-selector pattern-matching, it is unused. We
mark it as defined to skip visiting it, only if we matched it.

Bug: v8:12189
Change-Id: I0a805a3fce65c56ec52082b3625e1712ea1ee7cf
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3154347
Reviewed-by: Georg Neis <neis@chromium.org>
Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/main@{#76917}
2021-09-17 16:52:23 +00:00
..
DIR_METADATA Add DIR_METADATA files to v8. 2020-10-20 22:12:28 +00:00
OWNERS Add DIR_METADATA files to v8. 2020-10-20 22:12:28 +00:00
test-backing-store.cc [wasm] Move test-backing-store.cc to wasm directory 2021-03-03 13:07:01 +00:00
test-c-wasm-entry.cc [ext-code-space] Migrate WasmExportedFunctionData code field to CodeT 2021-06-18 14:10:43 +00:00
test-compilation-cache.cc [isolate][cleanup] Remove pointer to WasmEngine 2021-06-21 09:09:25 +00:00
test-gc.cc [wasm-gc] Allow array.init in function bodies 2021-09-17 15:36:24 +00:00
test-grow-memory.cc [base] Move utils/vector.h to base/vector.h 2021-06-18 13:33:13 +00:00
test-jump-table-assembler.cc [LOONG64] Add LoongArch64 backend 2021-08-16 13:05:19 +00:00
test-liftoff-for-fuzzing.cc Reland "[wasm] Add tests for NaN detection in Liftoff" 2021-09-14 08:41:58 +00:00
test-liftoff-inspection.cc [liftoff] Refactor options for Liftoff compilation 2021-08-04 16:48:48 +00:00
test-run-wasm-64.cc [wasm] Do not enforce LE for globals and WasmValue 2021-06-10 18:08:38 +00:00
test-run-wasm-asmjs.cc [test][cleanup] Rename WASM_*_LOCAL to WASM_LOCAL_* 2020-12-17 21:19:14 +00:00
test-run-wasm-atomics64.cc [wasm] Introduce --wasm-enforce-bounds-checks flag 2021-06-30 08:31:14 +00:00
test-run-wasm-atomics.cc [wasm] Introduce --wasm-enforce-bounds-checks flag 2021-06-30 08:31:14 +00:00
test-run-wasm-bulk-memory.cc [base] Move utils/vector.h to base/vector.h 2021-06-18 13:33:13 +00:00
test-run-wasm-exceptions.cc Reland "[include] Split out v8.h" 2021-08-24 13:08:55 +00:00
test-run-wasm-interpreter.cc [wasm][eh] Fix catchless try in interpreter 2021-09-13 10:52:13 +00:00
test-run-wasm-js.cc Reland "[include] Split out v8.h" 2021-08-24 13:08:55 +00:00
test-run-wasm-memory64.cc [wasm] Disable trap handling for memory64 2021-07-08 11:03:08 +00:00
test-run-wasm-module.cc [isolate][cleanup] Remove pointer to WasmEngine 2021-06-21 09:09:25 +00:00
test-run-wasm-relaxed-simd.cc [base] Move utils/vector.h to base/vector.h 2021-06-18 13:33:13 +00:00
test-run-wasm-sign-extension.cc [test][cleanup] Rename WASM_*_LOCAL to WASM_LOCAL_* 2020-12-17 21:19:14 +00:00
test-run-wasm-simd-liftoff.cc [wasm] Do not enforce LE for globals and WasmValue 2021-06-10 18:08:38 +00:00
test-run-wasm-simd.cc [x64] Optimize F64x2PromoteLowF32x4 with S128Load64Zero 2021-09-17 16:52:23 +00:00
test-run-wasm-wrappers.cc [wasm] Support reftypes tables in WasmModuleBuilder 2021-08-31 10:02:19 +00:00
test-run-wasm.cc Reland "[wasm] Move write scope out of NativeModule::AddCode" 2021-09-01 15:32:26 +00:00
test-streaming-compilation.cc [isolate][cleanup] Remove pointer to WasmEngine 2021-06-21 09:09:25 +00:00
test-wasm-breakpoints.cc [debug][cleanup] Use consistent StepInto and StepOver naming. 2021-06-01 11:26:57 +00:00
test-wasm-codegen.cc [zone] Cleanup zone allocations in src/wasm and tests 2020-07-10 12:11:55 +00:00
test-wasm-import-wrapper-cache.cc [wasm] Pass and store fewer wasm engine pointers 2021-06-21 11:57:45 +00:00
test-wasm-metrics.cc [wasm] Add CPU time metrics (reland) 2021-07-14 08:01:41 +00:00
test-wasm-serialization.cc Reland "[include] Split out v8.h" 2021-08-24 13:08:55 +00:00
test-wasm-shared-engine.cc [isolate][cleanup] Remove pointer to WasmEngine 2021-06-21 09:09:25 +00:00
test-wasm-stack.cc Reland "[include] Split out v8.h" 2021-08-24 13:08:55 +00:00
test-wasm-trap-position.cc Reland "[include] Split out v8.h" 2021-08-24 13:08:55 +00:00
wasm-atomics-utils.h
wasm-run-utils.cc [wasm] Change default value of tables 2021-09-17 06:30:08 +00:00
wasm-run-utils.h [wasm-gc] Implement nominal types 2021-09-15 13:43:39 +00:00
wasm-simd-utils.cc Reland "[wasm] fix float to/from int reinterpretation tests" 2021-08-09 21:44:49 +00:00
wasm-simd-utils.h Reland "[wasm] fix float to/from int reinterpretation tests" 2021-08-09 21:44:49 +00:00