[CIR][CIRGen][Builtin][Neon] Lower builtin_neon_vqshlud_n_s64 (llvm#1384)

Lower builtin_neon_vqshlud_n_s64

Author: AmrDeveloper

clang/lib/CIR/CodeGen/CIRGenBuiltinAArch64.cpp

@@ -3828,7 +3828,15 @@ CIRGenFunction::emitAArch64BuiltinExpr(unsigned BuiltinID, const CallExpr *E,
     llvm_unreachable("NEON::BI__builtin_neon_vqdmlslh_s16 NYI");
   }
   case NEON::BI__builtin_neon_vqshlud_n_s64: {
-    llvm_unreachable("NEON::BI__builtin_neon_vqshlud_n_s64 NYI");
+    const cir::IntType IntType = builder.getSInt64Ty();
+    Ops.push_back(emitScalarExpr(E->getArg(1)));
+    std::optional<llvm::APSInt> APSInt =
+        E->getArg(1)->getIntegerConstantExpr(getContext());
+    assert(APSInt && "Expected argument to be a constant");
+    Ops[1] = builder.getSInt64(APSInt->getZExtValue(), getLoc(E->getExprLoc()));
+    const StringRef Intrinsic = "aarch64.neon.sqshlu";
+    return emitNeonCall(builder, {IntType, IntType}, Ops, Intrinsic, IntType,
+                        getLoc(E->getExprLoc()));
   }
   case NEON::BI__builtin_neon_vqshld_n_u64:
   case NEON::BI__builtin_neon_vqshld_n_s64: {

clang/test/CIR/CodeGen/AArch64/neon.c

@@ -15681,12 +15681,16 @@ uint64_t test_vqshld_n_u64(uint64_t a) {
 //   return (int32_t)vqshlus_n_s32(a, 31);
 // }
 
-// NYI-LABEL: @test_vqshlud_n_s64(
-// NYI:   [[VQSHLU_N:%.*]] = call i64 @llvm.aarch64.neon.sqshlu.i64(i64 %a, i64 63)
-// NYI:   ret i64 [[VQSHLU_N]]
-// int64_t test_vqshlud_n_s64(int64_t a) {
-//   return (int64_t)vqshlud_n_s64(a, 63);
-// }
+int64_t test_vqshlud_n_s64(int64_t a) {
+  return (int64_t)vqshlud_n_s64(a, 63);
+
+  // CIR-LABEL: vqshlud_n_s64
+  // CIR: [[TMP0:%.*]] = cir.llvm.intrinsic "aarch64.neon.sqshlu" {{.*}}, {{.*}} : (!s64i, !s64i) -> !s64i
+
+  // LLVM-LABEL: @test_vqshlud_n_s64(
+  // LLVM: [[VQSHLU_N:%.*]] = call i64 @llvm.aarch64.neon.sqshlu.i64(i64 %0, i64 63)
+  // LLVM: ret i64 [[VQSHLU_N]]
+}
 
 // NYI-LABEL: @test_vqshlu_n_s64(
 // NYI:   [[TMP0:%.*]] = bitcast <1 x i64> %a to <8 x i8>