• Santiago Aboy Solanes's avatar
    [ptr-compr][gc] Propagate tenuring in StoreField with Compress nodes. · 0a424ac1
    Santiago Aboy Solanes authored
    The propagation of tenuring from outer allocations to inner allocations
    was blocked in pointer compression since we now had Compress nodes between
    AllocateRaw and StoreField.
    
    This was causing issues in GC. It popped up in the Octane2.1/Splay
    benchmark, where we had big regressions.
    
    This CL updates the memory optimizer so that it can use the Compress nodes
    as bridges and can perform the optimization successfully. Note that the
    Compress nodes only appear on the value input of the StoreField.
    
    Cq-Include-Trybots: luci.v8.try:v8_linux64_pointer_compression_rel_ng
    Cq-Include-Trybots: luci.v8.try:v8_linux64_arm64_pointer_compression_rel_ng
    Bug: v8:7703, v8:9519
    Change-Id: I6b0cc67955c6cc696e8c426b85c87a1794098ed0
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1714650Reviewed-by: 's avatarMichael Stanton <mvstanton@chromium.org>
    Commit-Queue: Santiago Aboy Solanes <solanes@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#62938}
    0a424ac1
Name
Last commit
Last update
benchmarks Loading commit data...
build_overrides Loading commit data...
custom_deps Loading commit data...
docs Loading commit data...
gni Loading commit data...
include Loading commit data...
infra Loading commit data...
samples Loading commit data...
src Loading commit data...
test Loading commit data...
testing Loading commit data...
third_party Loading commit data...
tools Loading commit data...
.clang-format Loading commit data...
.clang-tidy Loading commit data...
.editorconfig Loading commit data...
.flake8 Loading commit data...
.git-blame-ignore-revs Loading commit data...
.gitattributes Loading commit data...
.gitignore Loading commit data...
.gn Loading commit data...
.vpython Loading commit data...
.ycm_extra_conf.py Loading commit data...
AUTHORS Loading commit data...
BUILD.gn Loading commit data...
CODE_OF_CONDUCT.md Loading commit data...
COMMON_OWNERS Loading commit data...
ChangeLog Loading commit data...
DEPS Loading commit data...
ENG_REVIEW_OWNERS Loading commit data...
INFRA_OWNERS Loading commit data...
INTL_OWNERS Loading commit data...
LICENSE Loading commit data...
LICENSE.fdlibm Loading commit data...
LICENSE.strongtalk Loading commit data...
LICENSE.v8 Loading commit data...
LICENSE.valgrind Loading commit data...
MIPS_OWNERS Loading commit data...
OWNERS Loading commit data...
PPC_OWNERS Loading commit data...
PRESUBMIT.py Loading commit data...
README.md Loading commit data...
S390_OWNERS Loading commit data...
WATCHLISTS Loading commit data...
codereview.settings Loading commit data...