[clang] [RISCV] Check if v extension is enabled by the function features for the builtins not in Zve64*. (PR #112827)

[via cfe-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: Jim Lin (tclin914)

<details>
<summary>Changes</summary>

Fixes: https://github.com/llvm/llvm-project/issues/109694

---
Full diff: https://github.com/llvm/llvm-project/pull/112827.diff


1 Files Affected:

- (modified) clang/lib/Sema/SemaRISCV.cpp (+6-1) 


``````````diff
diff --git a/clang/lib/Sema/SemaRISCV.cpp b/clang/lib/Sema/SemaRISCV.cpp
index 3da4b515b1b114..3f1c2999286f3f 100644
--- a/clang/lib/Sema/SemaRISCV.cpp
+++ b/clang/lib/Sema/SemaRISCV.cpp
@@ -623,7 +623,12 @@ bool SemaRISCV::CheckBuiltinFunctionCall(const TargetInfo &TI,
     ASTContext::BuiltinVectorTypeInfo Info = Context.getBuiltinVectorTypeInfo(
         TheCall->getType()->castAs<BuiltinType>());
 
-    if (Context.getTypeSize(Info.ElementType) == 64 && !TI.hasFeature("v"))
+    const FunctionDecl *FD = SemaRef.getCurFunctionDecl();
+    llvm::StringMap<bool> FunctionFeatureMap;
+    Context.getFunctionFeatureMap(FunctionFeatureMap, FD);
+
+    if (Context.getTypeSize(Info.ElementType) == 64 && !TI.hasFeature("v")
+        && !FunctionFeatureMap.lookup("v"))
       return Diag(TheCall->getBeginLoc(),
                   diag::err_riscv_builtin_requires_extension)
              << /* IsExtension */ true << TheCall->getSourceRange() << "v";

``````````

</details>


https://github.com/llvm/llvm-project/pull/112827