[Object] Init subtarget info with cpu and target feature in initializeRecordStreamer.

The initializeRecordStreamer function previously initialize subtarget info with empty
CPU and target features strings. This may cause an error during asm parsing, becasue
asm code may use instructions available only for specific target fetures. So, add
CPU and target features initialization from parsed functions description.

Author: MabezDev

llvm/lib/Object/ModuleSymbolTable.cpp

@@ -90,8 +90,27 @@ initializeRecordStreamer(const Module &M,
   if (!MAI)
     return;
 
+  // Extract the target CPU and features from function attributes in the module
+  // so that the asm parser is initialized with the correct subtarget features.
+  // Without this, backends that gate instructions on subtarget features (e.g.
+  // Xtensa's "entry" requiring HasWindowed, or RISC-V multiply instructions)
+  // would reject valid inline assembly when the default CPU lacks those
+  // features.
+  StringRef CPU;
+  StringRef FS;
+  for (const Function &F : M) {
+    if (F.isDeclaration())
+      continue;
+    if (const Attribute &A = F.getFnAttribute("target-cpu"); A.isValid())
+      CPU = A.getValueAsString();
+    if (const Attribute &A = F.getFnAttribute("target-features"); A.isValid())
+      FS = A.getValueAsString();
+    if (!CPU.empty() && !FS.empty())
+      break;
+  }
+
   std::unique_ptr<MCSubtargetInfo> STI(
-      T->createMCSubtargetInfo(TT.str(), "", ""));
+      T->createMCSubtargetInfo(TT.str(), CPU, FS));
   if (!STI)
     return;