================
@@ -1673,8 +1673,33 @@ void tools::linkSanitizerRuntimeDeps(const ToolChain &TC,
CmdArgs.push_back("-lresolv");
}
+// Host interceptor library for offload UBSan. Enabled if we are
+// offloading to a target that supports UBSan.
+static bool hostNeedsUbsanOffloadRt(Compilation &C, const ToolChain &HostTC) {
+ if (HostTC.getTriple().isGPU())
+ return false;
+
+ static constexpr Action::OffloadKind Kinds[] = {
+ Action::OFK_Cuda, Action::OFK_OpenMP, Action::OFK_HIP, Action::OFK_SYCL};
+ for (Action::OffloadKind Kind : Kinds) {
+ for (const auto &Entry : llvm::make_range(C.getOffloadToolChains(Kind))) {
+ const ToolChain *DevTC = Entry.second;
+ // FIXME: CUDA/HIPSPV copy the host mask and ignore device sanitizers.
+ if (DevTC->getTriple().isNVPTX() || DevTC->getTriple().isSPIROrSPIRV())
+ continue;
+
+ const ArgList &DevArgs = C.getArgsForToolChain(DevTC, {}, Kind);
+ SanitizerArgs DevSan = DevTC->getSanitizerArgs(DevArgs, {}, Kind);
+ if (DevSan.needsUbsanRt() && !DevSan.requiresMinimalRuntime())
----------------
yxsamliu wrote:
`hostNeedsUbsanDeviceRt()` does not check `DevSan.linkRuntimes()`. With
device-scoped `-fno-sanitize-link-runtime`, the device runtime is not linked,
but the host `ubsan_device` library is still added. Should the host library
respect the same option?
https://github.com/llvm/llvm-project/pull/219973
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