[LoongArch] Add immediate operand validity check for __builtin_loongarch_dbar

[SixWeining]

clang/test/CodeGen/LoongArch/intrinsic-error.c

11

Also check lower bound.

[gonglingqin]

clang/test/CodeGen/LoongArch/intrinsic-error.c

11

Thanks, I will add test cases.

[gonglingqin]

Add test cases.

clang/lib/Sema/SemaChecking.cpp

bool Sema::CheckLoongArchBuiltinFunctionCall(const TargetInfo &TI,
   default:
     break;
   case LoongArch::BI__builtin_loongarch_crc_w_d_w:
     if (!TI.hasFeature("64bit"))
       return Diag(TheCall->getBeginLoc(),
                   diag::err_loongarch_builtin_requires_la64)
              << TheCall->getSourceRange();
     break;
+  case LoongArch::BI__builtin_loongarch_dbar:
+    // Check if immediate is in [0, 32767].
+    return SemaBuiltinConstantArgRange(TheCall, 0, 0, 32767);
   }
 
   return false;
 }
 
 bool Sema::CheckMipsBuiltinFunctionCall(const TargetInfo &TI,
                                         unsigned BuiltinID, CallExpr *TheCall) {
   return CheckMipsBuiltinCpu(TI, BuiltinID, TheCall) ||

clang/test/CodeGen/LoongArch/intrinsic-error.c

 // NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py
 // RUN: %clang_cc1 -triple loongarch32 -emit-llvm -S -verify %s -o /dev/null
 
 #include <larchintrin.h>
 
 int crc_w_d_w(long int a, int b) {
   return __builtin_loongarch_crc_w_d_w(a, b); // expected-error {{this builtin requires target: loongarch64}}
 }
+
+void dbar_out_of_hi_range() {
+  return __builtin_loongarch_dbar(32768); // expected-error {{argument value 32768 is outside the valid range [0, 32767]}}
+}
+
+void dbar_out_of_lo_range() {
+  return __builtin_loongarch_dbar(-1); // expected-error {{argument value 4294967295 is outside the valid range [0, 32767]}}
+}

llvm/test/CodeGen/LoongArch/intrinsic-error.ll

 ; RUN: not llc --mtriple=loongarch32 --disable-verify < %s 2>&1 | FileCheck %s
 ; RUN: not llc --mtriple=loongarch64 --disable-verify < %s 2>&1 | FileCheck %s
 
 define void @dbar_not_constant(i32 %x) nounwind {
 ; CHECK: argument to '__builtin_loongarch_dbar' must be a constant integer
 entry:
   call void @llvm.loongarch.dbar(i32 %x)
   ret void
 }
 
-define void @dbar_imm_out_of_range() nounwind {
+define void @dbar_imm_out_of_hi_range() nounwind {
 ; CHECK: argument to '__builtin_loongarch_dbar' out of range
 entry:
   call void @llvm.loongarch.dbar(i32 32769)
   ret void
 }
 
+define void @dbar_imm_out_of_lo_range() nounwind {
+; CHECK: argument to '__builtin_loongarch_dbar' out of range
+entry:
+  call void @llvm.loongarch.dbar(i32 -1)
+  ret void
+}
+
 declare void @llvm.loongarch.dbar(i32)