mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 21:10:12 +01:00
Chandler Carruth
d17609df5f
Now the CPU flags feature can be unconditionally added as part of the optimization features and another of the conditions in the main configuration goes away. The failure to pass these to links was probably harmless, but it's better to include it there as well.
72 lines
2.1 KiB
Python
72 lines
2.1 KiB
Python
# Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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# Exceptions. See /LICENSE for license information.
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# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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"""Definitions of optimization `cc_toolchain_config` features."""
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load(
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"@rules_cc//cc:cc_toolchain_config_lib.bzl",
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"feature",
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"feature_set",
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"flag_group",
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"flag_set",
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"with_feature_set",
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)
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load(
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":cc_toolchain_actions.bzl",
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"all_compile_actions",
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"all_link_actions",
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"codegen_compile_actions",
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)
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# Handle different levels of optimization with individual features so that
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# they can be ordered and the defaults can override the minimal settings if
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# both are enabled.
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minimal_optimization_flags = feature(
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name = "minimal_optimization_flags",
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flag_sets = [flag_set(
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actions = codegen_compile_actions,
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flag_groups = [flag_group(flags = ["-O1"])],
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)],
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)
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default_optimization_flags = feature(
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name = "default_optimization_flags",
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enabled = True,
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requires = [feature_set(["opt"])],
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flag_sets = [
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flag_set(
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actions = all_compile_actions,
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flag_groups = [flag_group(flags = ["-DNDEBUG"])],
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),
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flag_set(
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actions = codegen_compile_actions,
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flag_groups = [flag_group(flags = ["-O3"])],
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),
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],
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)
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cpu_flags = feature(
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name = "aarch64_cpu_flags",
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enabled = True,
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flag_sets = [
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flag_set(
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actions = all_compile_actions + all_link_actions,
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flag_groups = [flag_group(flags = ["-march=armv8.2-a"])],
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with_features = [with_feature_set(["aarch64_target"])],
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),
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flag_set(
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actions = all_compile_actions + all_link_actions,
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flag_groups = [flag_group(flags = ["-march=x86-64-v2"])],
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with_features = [with_feature_set(["x86_64_target"])],
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),
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],
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)
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# Note that the order of features is significant in this list and determines the
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# relative order of flags from the features listed.
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optimization_features = [
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minimal_optimization_flags,
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default_optimization_flags,
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cpu_flags,
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]
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