blob: 3f08acab4549562af50c4c7c09d124303172bd6f (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
|
# SPDX-License-Identifier: GPL-2.0
# Enable available and selected Clang AutoFDO features.
CFLAGS_AUTOFDO_CLANG := -fdebug-info-for-profiling -mllvm -enable-fs-discriminator=true -mllvm -improved-fs-discriminator=true
RUSTFLAGS_AUTOFDO_CLANG := -Zdebug-info-for-profiling -Cllvm-args=-enable-fs-discriminator=true -Cllvm-args=-improved-fs-discriminator=true
ifndef CONFIG_DEBUG_INFO
CFLAGS_AUTOFDO_CLANG += -gmlt
RUSTFLAGS_AUTOFDO_CLANG += -Cdebuginfo=line-tables-only
endif
ifdef CLANG_AUTOFDO_PROFILE
CFLAGS_AUTOFDO_CLANG += -fprofile-sample-use=$(CLANG_AUTOFDO_PROFILE) -ffunction-sections
CFLAGS_AUTOFDO_CLANG += -fsplit-machine-functions
RUSTFLAGS_AUTOFDO_CLANG += -Zprofile-sample-use=$(CLANG_AUTOFDO_PROFILE) -Zfunction-sections=y
RUSTFLAGS_AUTOFDO_CLANG += -Cllvm-args=-split-machine-functions
endif
ifdef CONFIG_LTO_CLANG_THIN
ifdef CLANG_AUTOFDO_PROFILE
KBUILD_LDFLAGS += --lto-sample-profile=$(CLANG_AUTOFDO_PROFILE)
endif
KBUILD_LDFLAGS += --mllvm=-enable-fs-discriminator=true --mllvm=-improved-fs-discriminator=true -plugin-opt=thinlto
KBUILD_LDFLAGS += -plugin-opt=-split-machine-functions
endif
export CFLAGS_AUTOFDO_CLANG RUSTFLAGS_AUTOFDO_CLANG
|
