1799f9d7b4
Bug: http://b/199203503 Upstream LLVM change 6d2d3bd0a6 made -z,start-stop-gc the default. It drops metadata sections like __llvm_prf_data unless they are marked SHF_GNU_RETAIN. https://reviews.llvm.org/D97448 marks generated sections, including __llvm_prf_data as SHF_GNU_RETAIN. However this change is not in the Rust toolchain. Since we link Rust libs with new lld, we should use nostart-stop-gc until the Rust toolchain updates past D97448. Test: m unicode-xid_device_test_src_lib and verify that they have the __llvm_prf_data section. Change-Id: I55eb3622dae9bd789fbacfe708600316102c365f
85 lines
2.7 KiB
Go
85 lines
2.7 KiB
Go
// Copyright 2020 The Android Open Source Project
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package rust
|
|
|
|
import (
|
|
"github.com/google/blueprint"
|
|
|
|
"android/soong/cc"
|
|
)
|
|
|
|
var CovLibraryName = "libprofile-clang-extras"
|
|
|
|
const profileInstrFlag = "-fprofile-instr-generate=/data/misc/trace/clang-%p-%m.profraw"
|
|
|
|
type coverage struct {
|
|
Properties cc.CoverageProperties
|
|
|
|
// Whether binaries containing this module need --coverage added to their ldflags
|
|
linkCoverage bool
|
|
}
|
|
|
|
func (cov *coverage) props() []interface{} {
|
|
return []interface{}{&cov.Properties}
|
|
}
|
|
|
|
func (cov *coverage) deps(ctx DepsContext, deps Deps) Deps {
|
|
if cov.Properties.NeedCoverageVariant {
|
|
ctx.AddVariationDependencies([]blueprint.Variation{
|
|
{Mutator: "link", Variation: "static"},
|
|
}, cc.CoverageDepTag, CovLibraryName)
|
|
}
|
|
|
|
return deps
|
|
}
|
|
|
|
func (cov *coverage) flags(ctx ModuleContext, flags Flags, deps PathDeps) (Flags, PathDeps) {
|
|
|
|
if !ctx.DeviceConfig().NativeCoverageEnabled() {
|
|
return flags, deps
|
|
}
|
|
|
|
if cov.Properties.CoverageEnabled {
|
|
flags.Coverage = true
|
|
coverage := ctx.GetDirectDepWithTag(CovLibraryName, cc.CoverageDepTag).(cc.LinkableInterface)
|
|
flags.RustFlags = append(flags.RustFlags,
|
|
"-Z instrument-coverage", "-g")
|
|
flags.LinkFlags = append(flags.LinkFlags,
|
|
profileInstrFlag, "-g", coverage.OutputFile().Path().String(), "-Wl,--wrap,open",
|
|
// Upstream LLVM change 6d2d3bd0a6 made
|
|
// -z,start-stop-gc the default. It drops metadata
|
|
// sections like __llvm_prf_data unless they are marked
|
|
// SHF_GNU_RETAIN. https://reviews.llvm.org/D97448
|
|
// marks generated sections, including __llvm_prf_data
|
|
// as SHF_GNU_RETAIN. However this change is not in
|
|
// the Rust toolchain. Since we link Rust libs with
|
|
// new lld, we should use nostart-stop-gc until the
|
|
// Rust toolchain updates past D97448.
|
|
"-Wl,-z,nostart-stop-gc",
|
|
)
|
|
deps.StaticLibs = append(deps.StaticLibs, coverage.OutputFile().Path())
|
|
}
|
|
|
|
return flags, deps
|
|
}
|
|
|
|
func (cov *coverage) begin(ctx BaseModuleContext) {
|
|
if ctx.Host() {
|
|
// Host coverage not yet supported.
|
|
} else {
|
|
// Update useSdk and sdkVersion args if Rust modules become SDK aware.
|
|
cov.Properties = cc.SetCoverageProperties(ctx, cov.Properties, ctx.RustModule().nativeCoverage(), false, "")
|
|
}
|
|
}
|