• Caitlin Potter's avatar
    Reland "[esnext] re-implement template strings" · b8229612
    Caitlin Potter authored
    - Add a new bytecode for the ToString operation, replacing the old
    intrinsic call (currently does not collect type feedback).
    - Add a new AST node to represent TemplateLiterals, and avoid
    generating unnecessary ToString operations in some simple cases.
    - Use a single feedback slot for each string addition, because the
    type feedback should always be the same for each addition
    
    This seems to produce a very slight improvement on JSTests benchmarks
    and bench-ruben.js from v8:7415, and it's possible that type feedback
    for the ToString bytecode could provide more opportunities to eliminate
    the runtime call in TurboFan.
    
    Doesn't touch tagged templates
    
    [esnext] fix OOB read in ASTPrinter::VisistTemplateLiteral
    
    Fixes an error where TemplateLiteral printing in --print-ast
    would try to read an element beyond the length of a vector.
    
    BUG=v8:7415, chromium:820596
    R=adamk@chromium.org, gsathya@chromum.org, rmcilroy@chromium.org, ishell@chromium.org, bmeurer@chromium.org
    
    Change-Id: Ie56894f73a6445550a5f95f42160c4e29ab1da42
    Reviewed-on: https://chromium-review.googlesource.com/958408Reviewed-by: 's avatarBenedikt Meurer <bmeurer@chromium.org>
    Commit-Queue: Caitlin Potter <caitp@igalia.com>
    Cr-Commit-Position: refs/heads/master@{#51933}
    b8229612
Name
Last commit
Last update
..
OWNERS Loading commit data...
ast-function-literal-id-reindexer.cc Loading commit data...
ast-function-literal-id-reindexer.h Loading commit data...
ast-source-ranges.h Loading commit data...
ast-traversal-visitor.h Loading commit data...
ast-value-factory.cc Loading commit data...
ast-value-factory.h Loading commit data...
ast.cc Loading commit data...
ast.h Loading commit data...
compile-time-value.cc Loading commit data...
compile-time-value.h Loading commit data...
context-slot-cache.cc Loading commit data...
context-slot-cache.h Loading commit data...
modules.cc Loading commit data...
modules.h Loading commit data...
prettyprinter.cc Loading commit data...
prettyprinter.h Loading commit data...
scopes.cc Loading commit data...
scopes.h Loading commit data...
variables.cc Loading commit data...
variables.h Loading commit data...