[clang] [Driver] Simplify linking of ubsan_standalone_cxx (PR #120938)

[via cfe-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: Vitaly Buka (vitalybuka)

<details>
<summary>Changes</summary>



---
Full diff: https://github.com/llvm/llvm-project/pull/120938.diff


1 Files Affected:

- (modified) clang/lib/Driver/ToolChains/CommonArgs.cpp (+6-6) 


``````````diff
diff --git a/clang/lib/Driver/ToolChains/CommonArgs.cpp b/clang/lib/Driver/ToolChains/CommonArgs.cpp
index 47df650e5b9486..e33fa443b3a0ec 100644
--- a/clang/lib/Driver/ToolChains/CommonArgs.cpp
+++ b/clang/lib/Driver/ToolChains/CommonArgs.cpp
@@ -1561,8 +1561,6 @@ collectSanitizerRuntimes(const ToolChain &TC, const ArgList &Args,
       StaticRuntimes.push_back("ubsan_minimal");
     } else {
       StaticRuntimes.push_back("ubsan_standalone");
-      if (SanArgs.linkCXXRuntimes())
-        StaticRuntimes.push_back("ubsan_standalone_cxx");
     }
   }
   if (SanArgs.needsSafeStackRt()) {
@@ -1572,11 +1570,13 @@ collectSanitizerRuntimes(const ToolChain &TC, const ArgList &Args,
   if (!(SanArgs.needsSharedRt() && SanArgs.needsUbsanRt())) {
     if (SanArgs.needsCfiRt())
       StaticRuntimes.push_back("cfi");
-    if (SanArgs.needsCfiDiagRt()) {
+    if (SanArgs.needsCfiDiagRt())
       StaticRuntimes.push_back("cfi_diag");
-      if (SanArgs.linkCXXRuntimes())
-        StaticRuntimes.push_back("ubsan_standalone_cxx");
-    }
+  }
+  if (SanArgs.linkCXXRuntimes() && !SanArgs.requiresMinimalRuntime() &&
+      ((!SanArgs.needsSharedRt() && SanArgs.needsUbsanRt()) ||
+       SanArgs.needsCfiDiagRt())) {
+    StaticRuntimes.push_back("ubsan_standalone_cxx");
   }
   if (SanArgs.needsStatsRt()) {
     NonWholeStaticRuntimes.push_back("stats");

``````````

</details>


https://github.com/llvm/llvm-project/pull/120938