[PATCH] D152403: [Clang][CUDA] Disable diagnostics for neon attrs for GPU-side CUDA compilation

[Alexander Shaposhnikov via Phabricator via cfe-commits]

alexander-shaposhnikov updated this revision to Diff 529794.
alexander-shaposhnikov added a comment.

Address comments


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D152403/new/

https://reviews.llvm.org/D152403

Files:
  clang/lib/Sema/SemaType.cpp
  clang/test/SemaCUDA/neon-attrs.cu


Index: clang/test/SemaCUDA/neon-attrs.cu
===================================================================
--- /dev/null
+++ clang/test/SemaCUDA/neon-attrs.cu
@@ -0,0 +1,21 @@
+// CPU-side compilation on ARM with neon enabled (no errors expected).
+// RUN: %clang_cc1 -triple arm64-linux-gnu -target-feature +neon -aux-triple nvptx64 -x cuda -fsyntax-only -verify=quiet %s
+
+// CPU-side compilation on ARM with neon disabled.
+// RUN: %clang_cc1 -triple arm64-linux-gnu -target-feature -neon -aux-triple nvptx64 -x cuda -fsyntax-only -verify %s
+
+// GPU-side compilation on ARM (no errors expected).
+// RUN: %clang_cc1 -triple nvptx64 -aux-triple arm64-linux-gnu -fcuda-is-device -x cuda -fsyntax-only -verify=quiet %s
+
+// Regular C++ compilation on ARM with neon enabled (no errors expected).
+// RUN: %clang_cc1 -triple arm64-linux-gnu -target-feature +neon -x c++ -fsyntax-only -verify=quiet %s
+
+// Regular C++ compilation on ARM with neon disabled.
+// RUN: %clang_cc1 -triple arm64-linux-gnu -target-feature -neon -x c++ -fsyntax-only -verify %s
+
+// quiet-no-diagnostics
+typedef __attribute__((neon_vector_type(4))) float float32x4_t;
+// expected-error at -1 {{'neon_vector_type' attribute is not supported on targets missing 'neon' or 'mve'}}
+typedef unsigned char poly8_t;
+typedef __attribute__((neon_polyvector_type(8))) poly8_t poly8x8_t;
+// expected-error at -1 {{'neon_polyvector_type' attribute is not supported on targets missing 'neon' or 'mve'}}
Index: clang/lib/Sema/SemaType.cpp
===================================================================
--- clang/lib/Sema/SemaType.cpp
+++ clang/lib/Sema/SemaType.cpp
@@ -8161,10 +8161,17 @@
 /// match one of the standard Neon vector types.
 static void HandleNeonVectorTypeAttr(QualType &CurType, const ParsedAttr &Attr,
                                      Sema &S, VectorType::VectorKind VecKind) {
+  bool IsTargetCUDAAndHostARM = false;
+  if (S.getLangOpts().CUDAIsDevice) {
+    const TargetInfo *AuxTI = S.getASTContext().getAuxTargetInfo();
+    IsTargetCUDAAndHostARM =
+        AuxTI && AuxTI->getTriple().isAArch64() || AuxTI->getTriple().isARM();
+  }
+
   // Target must have NEON (or MVE, whose vectors are similar enough
   // not to need a separate attribute)
   if (!S.Context.getTargetInfo().hasFeature("neon") &&
-      !S.Context.getTargetInfo().hasFeature("mve")) {
+      !S.Context.getTargetInfo().hasFeature("mve") && !IsTargetCUDAAndHostARM) {
     S.Diag(Attr.getLoc(), diag::err_attribute_unsupported)
         << Attr << "'neon' or 'mve'";
     Attr.setInvalid();
@@ -8183,7 +8190,8 @@
     return;
 
   // Only certain element types are supported for Neon vectors.
-  if (!isPermittedNeonBaseType(CurType, VecKind, S)) {
+  if (!isPermittedNeonBaseType(CurType, VecKind, S) &&
+      !IsTargetCUDAAndHostARM) {
     S.Diag(Attr.getLoc(), diag::err_attribute_invalid_vector_type) << CurType;
     Attr.setInvalid();
     return;


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