AuroraMiddleware/v8
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[ptr-compr] Add gn arg for 31bit Smis on 64bit arch

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Cq-Include-Trybots: luci.chromium.try:linux_chromium_rel_ng
Change-Id: I44e62d53bc7b341a685eeca5691a86e915fcce44
Bug: v8:8344
Reviewed-on: https://chromium-review.googlesource.com/c/1292064
Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Cr-Commit-Position: refs/heads/master@{#56940}
This commit is contained in:
Sigurd Schneider 2018-10-24 14:29:33 +02:00 committed by Commit Bot
parent 3e3fc9f2d3
commit a124f0da9b
3 changed files with 6 additions and 1 deletions
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4
BUILD.gn
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@ -92,6 +92,7 @@ declare_args() {
# Enable pointer compression (sets -dV8_COMPRESS_POINTERS).
v8_enable_pointer_compression = false
v8_enable_31bit_smis_on_64bit_arch = false
# Interpreted regexp engine exists as platform-independent alternative
# based where the regular expression is compiled to a bytecode.
@ -340,6 +341,9 @@ config("features") {
if (v8_enable_pointer_compression) {
defines += [ "V8_COMPRESS_POINTERS" ]
}
if (v8_enable_31bit_smis_on_64bit_arch) {
defines += [ "V8_31BIT_SMIS_ON_64BIT_ARCH" ]
}
if (v8_enable_object_print) {
defines += [ "OBJECT_PRINT" ]
}

1
include/OWNERS
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@ -5,6 +5,7 @@ danno@chromium.org
ulan@chromium.org
yangguo@chromium.org
per-file v8-internal.h=file://OWNERS
per-file v8-inspector.h=dgozman@chromium.org
per-file v8-inspector.h=pfeldman@chromium.org
per-file v8-inspector.h=kozyatinskiy@chromium.org

2
include/v8-internal.h
View File

@ -103,7 +103,7 @@ struct SmiTagging<8> {
}
};
#if V8_COMPRESS_POINTERS
#if defined(V8_COMPRESS_POINTERS) || defined(V8_31BIT_SMIS_ON_64BIT_ARCH)
static_assert(
kApiPointerSize == kApiInt64Size,
"Pointer compression can be enabled only for 64-bit architectures");