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[build] Remove ability to disable TurboFan at build time.

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This removes support for disabling TurboFan by default via the build
time {v8_disable_turbo} flag. We no longer need to be able to build
binaries with TurboFan disabled.

R=machenbach@chromium.org
BUG=v8:6408

Change-Id: I4062914c2bf823ab42250595ad67d1dc8da3f1d3
Reviewed-on: https://chromium-review.googlesource.com/528138
Reviewed-by: Ross McIlroy <rmcilroy@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45847}
This commit is contained in:
Michael Starzinger 2017-06-09 10:25:47 +02:00 committed by Commit Bot
parent 237d21b2a4
commit b3da3008a1
2 changed files with 1 additions and 13 deletions
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6
BUILD.gn
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@ -24,9 +24,6 @@ declare_args() {
# Sets -DV8_ENABLE_FUTURE.
v8_enable_future = false
# Sets -DV8_DISABLE_TURBO.
v8_disable_turbo = false
# Sets -DVERIFY_HEAP.
v8_enable_verify_heap = ""
@ -230,9 +227,6 @@ config("features") {
if (v8_enable_future) {
defines += [ "V8_ENABLE_FUTURE" ]
}
if (v8_disable_turbo) {
defines += [ "V8_DISABLE_TURBO" ]
}
if (v8_enable_gdbjit) {
defines += [ "ENABLE_GDB_JIT_INTERFACE" ]
}

8
src/flag-definitions.h
View File

@ -448,13 +448,7 @@ DEFINE_BOOL(omit_map_checks_for_leaf_maps, true,
"deoptimize the optimized code if the layout of the maps changes.")
// Flags for TurboFan.
#ifdef V8_DISABLE_TURBO
// Allow to disable turbofan with a build flag after it's turned on by default.
#define TURBO_BOOL false
#else
#define TURBO_BOOL true
#endif
DEFINE_BOOL(turbo, TURBO_BOOL, "enable TurboFan compiler")
DEFINE_BOOL(turbo, true, "enable TurboFan compiler")
DEFINE_BOOL(turbo_sp_frame_access, false,
"use stack pointer-relative access to frame wherever possible")
DEFINE_BOOL(turbo_preprocess_ranges, true,