[clang] [compiler-rt] [XRay] Add support for instrumentation of DSOs on x86_64 (PR #90959)

[Brian Cain via cfe-commits]

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@@ -63,6 +63,10 @@ XRayArgs::XRayArgs(const ToolChain &TC, const ArgList &Args) {
         << XRayInstrument->getSpelling() << Triple.str();
   }
 
+  if (Args.hasFlag(options::OPT_fxray_enable_shared,
+                   options::OPT_fno_xray_enable_shared, false))
+    XRayEnableShared = true;
+
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androm3da wrote:

I think we should emit an error if xray shared is enabled but PIC is not enabled.  Could you add a test for that? 

https://github.com/llvm/llvm-project/pull/90959