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build: Support -mcpu= on ARM and ARM64

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This commit is contained in:
klzgrad 2020-05-19 23:42:14 +08:00
parent 0198ac540a
commit 2c44fd6e39
2 changed files with 12 additions and 0 deletions
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5
src/build/config/arm.gni
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@ -36,6 +36,8 @@ if (current_cpu == "arm" || v8_current_cpu == "arm") {
# Thumb is a reduced instruction set available on some ARM processors that
# has increased code density.
arm_use_thumb = true
arm_cpu = ""
}
if (current_os == "android" || target_os == "android") {
@ -124,6 +126,9 @@ if (current_cpu == "arm" || v8_current_cpu == "arm") {
# arm64 supports only "hard".
arm_float_abi = "hard"
arm_use_neon = true
declare_args() {
arm_cpu = ""
}
declare_args() {
# Enables the new Armv8 branch protection features. Valid strings are:
# - "pac": Enables Pointer Authentication Code (PAC, featured in Armv8.3)

7
src/build/config/compiler/BUILD.gn
View File

@ -917,6 +917,10 @@ config("compiler_cpu_abi") {
"-march=$arm_arch",
"-mfloat-abi=$arm_float_abi",
]
if (arm_cpu != "") {
cflags += [ "-mcpu=$arm_cpu" ]
}
ldflags += [ "-mfloat-abi=$arm_float_abi" ]
}
if (arm_tune != "") {
cflags += [ "-mtune=$arm_tune" ]
@ -930,6 +934,9 @@ config("compiler_cpu_abi") {
# Outline atomics crash on Exynos 9810. http://crbug.com/1272795
cflags += [ "-mno-outline-atomics" ]
}
if (arm_cpu != "") {
cflags += [ "-mcpu=$arm_cpu" ]
}
} else if (current_cpu == "mipsel" && !is_nacl) {
ldflags += [ "-Wl,--hash-style=sysv" ]
if (custom_toolchain == "") {