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Merge "[cc_fuzz] Revert 'disable LTO' patches." am: 6c0de9938e am: 998e34c8fd

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Original change: https://android-review.googlesource.com/c/platform/build/soong/+/1976512

Change-Id: Iec08cb88461a4502c94b7d58cd4749b4fc9d1ad1
This commit is contained in:
Treehugger Robot 2022-03-02 00:33:57 +00:00 committed by Automerger Merge Worker
commit 29ad0112d5
2 changed files with 0 additions and 18 deletions
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6
cc/lto.go
View file

@ -82,12 +82,6 @@ func (lto *lto) useClangLld(ctx BaseModuleContext) bool {
}
func (lto *lto) flags(ctx BaseModuleContext, flags Flags) Flags {
// TODO(b/131771163): Disable LTO when using explicit fuzzing configurations.
// LTO breaks fuzzer builds.
if inList("-fsanitize=fuzzer-no-link", flags.Local.CFlags) {
return flags
}
if lto.LTO(ctx) {
var ltoCFlag string
var ltoLdFlag string

12
cc/sanitize.go
View file

@ -541,12 +541,6 @@ func (sanitize *sanitize) begin(ctx BaseModuleContext) {
s.Address = nil
s.Thread = nil
}
// TODO(b/131771163): CFI transiently depends on LTO, and thus Fuzzer is
// mutually incompatible.
if Bool(s.Fuzzer) {
s.Cfi = nil
}
}
func toDisableImplicitIntegerChange(flags []string) bool {
@ -641,12 +635,6 @@ func (sanitize *sanitize) flags(ctx ModuleContext, flags Flags) Flags {
if Bool(sanitize.Properties.Sanitize.Fuzzer) {
flags.Local.CFlags = append(flags.Local.CFlags, "-fsanitize=fuzzer-no-link")
// TODO(b/131771163): LTO and Fuzzer support is mutually incompatible.
_, flags.Local.LdFlags = removeFromList("-flto", flags.Local.LdFlags)
_, flags.Local.CFlags = removeFromList("-flto", flags.Local.CFlags)
flags.Local.LdFlags = append(flags.Local.LdFlags, "-fno-lto")
flags.Local.CFlags = append(flags.Local.CFlags, "-fno-lto")
// TODO(b/142430592): Upstream linker scripts for sanitizer runtime libraries
// discard the sancov_lowest_stack symbol, because it's emulated TLS (and thus
// doesn't match the linker script due to the "__emutls_v." prefix).