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[rust] Switch LTO flavor to "thin"

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Bug: http://b/202032071

Thin LTO provides similar performance gains to full LTO but takes less
time during build.

Thin LTO also doesn't cause the error with `-C lto` and `-C
llvm-args=--runtime-counter-relocation` in b/202032071.

Test: presubmit
Test: verify b/202032071
Change-Id: Id5749aaea598d4b555a9d959ed753a312ae36f26
This commit is contained in:
Pirama Arumuga Nainar
2021-10-25 15:37:43 -07:00
parent 85d7297318
commit f77913f0de
1 changed files with 3 additions and 3 deletions
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6
rust/builder.go
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@@ -95,7 +95,7 @@ func init() {
func TransformSrcToBinary(ctx ModuleContext, mainSrc android.Path, deps PathDeps, flags Flags,
outputFile android.WritablePath) buildOutput {
flags.GlobalRustFlags = append(flags.GlobalRustFlags, "-C lto")
flags.GlobalRustFlags = append(flags.GlobalRustFlags, "-C lto=thin")
return transformSrctoCrate(ctx, mainSrc, deps, flags, outputFile, "bin")
}
@@ -112,13 +112,13 @@ func TransformSrctoDylib(ctx ModuleContext, mainSrc android.Path, deps PathDeps,
func TransformSrctoStatic(ctx ModuleContext, mainSrc android.Path, deps PathDeps, flags Flags,
outputFile android.WritablePath) buildOutput {
flags.GlobalRustFlags = append(flags.GlobalRustFlags, "-C lto")
flags.GlobalRustFlags = append(flags.GlobalRustFlags, "-C lto=thin")
return transformSrctoCrate(ctx, mainSrc, deps, flags, outputFile, "staticlib")
}
func TransformSrctoShared(ctx ModuleContext, mainSrc android.Path, deps PathDeps, flags Flags,
outputFile android.WritablePath) buildOutput {
flags.GlobalRustFlags = append(flags.GlobalRustFlags, "-C lto")
flags.GlobalRustFlags = append(flags.GlobalRustFlags, "-C lto=thin")
return transformSrctoCrate(ctx, mainSrc, deps, flags, outputFile, "cdylib")
}