• Seth Brenith's avatar
    [torque] Generate better code when using `&` operator on bitfields · 98438d86
    Seth Brenith authored
    Sometimes CSA code carefully constructs a mask to check several
    bitfields at once. Thus far, such a check has been very awkward to write
    in Torque. This change adds a way to do so, using the
    non-short-circuiting binary `&` operator. So now you can write an
    expression that depends on several bitfields from a bitfield struct,
    like `x.a == 5 & x.b & !x.c & x.d == 2` (assuming b is a one-bit value),
    and it will be reduced to a single mask and equality check. To
    demonstrate a usage of this new reduction, this change ports the trivial
    macro IsSimpleObjectMap to Torque. I manually verified that the
    generated code for the builtin SetDataProperties, which uses that macro,
    is unchanged.
    
    Bug: v8:7793
    Change-Id: I4a23e0005d738a6699ea0f2a63f9fd67b01e7026
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2183276
    Commit-Queue: Seth Brenith <seth.brenith@microsoft.com>
    Reviewed-by: 's avatarTobias Tebbi <tebbi@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#67948}
    98438d86
Name
Last commit
Last update
..
compiler Loading commit data...
heap Loading commit data...
interpreter Loading commit data...
libplatform Loading commit data...
libsampler Loading commit data...
parsing Loading commit data...
torque Loading commit data...
wasm Loading commit data...
BUILD.gn Loading commit data...
DEPS Loading commit data...
OWNERS Loading commit data...
assembler-helper-arm.cc Loading commit data...
assembler-helper-arm.h Loading commit data...
cctest.cc Loading commit data...
cctest.h Loading commit data...
cctest.status Loading commit data...
collector.h Loading commit data...
disasm-regex-helper.cc Loading commit data...
disasm-regex-helper.h Loading commit data...
expression-type-collector-macros.h Loading commit data...
gay-fixed.cc Loading commit data...
gay-fixed.h Loading commit data...
gay-precision.cc Loading commit data...
gay-precision.h Loading commit data...
gay-shortest.cc Loading commit data...
gay-shortest.h Loading commit data...
manually-externalized-buffer.h Loading commit data...
print-extension.cc Loading commit data...
print-extension.h Loading commit data...
profiler-extension.cc Loading commit data...
profiler-extension.h Loading commit data...
scope-test-helper.h Loading commit data...
setup-isolate-for-tests.cc Loading commit data...
setup-isolate-for-tests.h Loading commit data...
test-access-checks.cc Loading commit data...
test-accessor-assembler.cc Loading commit data...
test-accessors.cc Loading commit data...
test-allocation.cc Loading commit data...
test-api-accessors.cc Loading commit data...
test-api-array-buffer.cc Loading commit data...
test-api-icu.cc Loading commit data...
test-api-interceptors.cc Loading commit data...
test-api-stack-traces.cc Loading commit data...
test-api-typed-array.cc Loading commit data...
test-api-wasm.cc Loading commit data...
test-api.cc Loading commit data...
test-api.h Loading commit data...
test-array-list.cc Loading commit data...
test-assembler-arm.cc Loading commit data...
test-assembler-arm64.cc Loading commit data...
test-assembler-ia32.cc Loading commit data...
test-assembler-mips.cc Loading commit data...
test-assembler-mips64.cc Loading commit data...
test-assembler-ppc.cc Loading commit data...
test-assembler-s390.cc Loading commit data...
test-assembler-x64.cc Loading commit data...
test-atomicops.cc Loading commit data...
test-backing-store.cc Loading commit data...
test-bignum-dtoa.cc Loading commit data...
test-bignum.cc Loading commit data...
test-bit-vector.cc Loading commit data...
test-circular-queue.cc Loading commit data...
test-code-layout.cc Loading commit data...
test-code-pages.cc Loading commit data...
test-code-stub-assembler.cc Loading commit data...
test-compiler.cc Loading commit data...
test-constantpool.cc Loading commit data...
test-conversions.cc Loading commit data...
test-cpu-profiler.cc Loading commit data...
test-date.cc Loading commit data...
test-debug-helper.cc Loading commit data...
test-debug.cc Loading commit data...
test-decls.cc Loading commit data...
test-deoptimization.cc Loading commit data...
test-dictionary.cc Loading commit data...
test-disasm-arm.cc Loading commit data...
test-disasm-arm64.cc Loading commit data...
test-disasm-ia32.cc Loading commit data...
test-disasm-mips.cc Loading commit data...
test-disasm-mips64.cc Loading commit data...
test-disasm-ppc.cc Loading commit data...
test-disasm-s390.cc Loading commit data...
test-disasm-x64.cc Loading commit data...
test-diy-fp.cc Loading commit data...
test-double.cc Loading commit data...
test-dtoa.cc Loading commit data...
test-elements-kind.cc Loading commit data...
test-factory.cc Loading commit data...
test-fast-dtoa.cc Loading commit data...
test-feedback-vector.cc Loading commit data...
test-feedback-vector.h Loading commit data...
test-field-type-tracking.cc Loading commit data...
test-fixed-dtoa.cc Loading commit data...
test-flags.cc Loading commit data...
test-func-name-inference.cc Loading commit data...
test-fuzz-arm64.cc Loading commit data...
test-global-handles.cc Loading commit data...
test-global-object.cc Loading commit data...
test-hashcode.cc Loading commit data...
test-hashmap.cc Loading commit data...
test-heap-profiler.cc Loading commit data...
test-icache.cc Loading commit data...
test-identity-map.cc Loading commit data...
test-inobject-slack-tracking.cc Loading commit data...
test-inspector.cc Loading commit data...
test-intl.cc Loading commit data...
test-javascript-arm64.cc Loading commit data...
test-js-arm64-variables.cc Loading commit data...
test-js-weak-refs.cc Loading commit data...
test-liveedit.cc Loading commit data...
test-local-handles.cc Loading commit data...
test-lockers.cc Loading commit data...
test-log-stack-tracer.cc Loading commit data...
test-log.cc Loading commit data...
test-macro-assembler-arm.cc Loading commit data...
test-macro-assembler-arm64.cc Loading commit data...
test-macro-assembler-mips.cc Loading commit data...
test-macro-assembler-mips64.cc Loading commit data...
test-macro-assembler-x64.cc Loading commit data...
test-managed.cc Loading commit data...
test-mementos.cc Loading commit data...
test-modules.cc Loading commit data...
test-object.cc Loading commit data...
test-orderedhashtable.cc Loading commit data...
test-parsing.cc Loading commit data...
test-persistent-handles.cc Loading commit data...
test-platform.cc Loading commit data...
test-pointer-auth-arm64.cc Loading commit data...
test-poison-disasm-arm.cc Loading commit data...
test-poison-disasm-arm64.cc Loading commit data...
test-profile-generator.cc Loading commit data...
test-random-number-generator.cc Loading commit data...
test-regexp.cc Loading commit data...
test-representation.cc Loading commit data...
test-roots.cc Loading commit data...
test-sampler-api.cc Loading commit data...
test-serialize.cc Loading commit data...
test-smi-lexicographic-compare.cc Loading commit data...
test-stack-unwinding-win64.cc Loading commit data...
test-strings.cc Loading commit data...
test-strtod.cc Loading commit data...
test-symbols.cc Loading commit data...
test-sync-primitives-arm.cc Loading commit data...
test-sync-primitives-arm64.cc Loading commit data...
test-thread-termination.cc Loading commit data...
test-threads.cc Loading commit data...
test-trace-event.cc Loading commit data...
test-traced-value.cc Loading commit data...
test-transitions.cc Loading commit data...
test-transitions.h Loading commit data...
test-typedarrays.cc Loading commit data...
test-types.cc Loading commit data...
test-unboxed-doubles.cc Loading commit data...
test-unscopables-hidden-prototype.cc Loading commit data...
test-unwinder-code-pages.cc Loading commit data...
test-unwinder.cc Loading commit data...
test-usecounters.cc Loading commit data...
test-utils-arm64.cc Loading commit data...
test-utils-arm64.h Loading commit data...
test-utils.cc Loading commit data...
test-v8windbg.cc Loading commit data...
test-version.cc Loading commit data...
test-weakmaps.cc Loading commit data...
test-weaksets.cc Loading commit data...
testcfg.py Loading commit data...
trace-extension.cc Loading commit data...
trace-extension.h Loading commit data...
unicode-helpers.cc Loading commit data...
unicode-helpers.h Loading commit data...