Address review comments

Author: imkiva

clang/test/CodeGen/RISCV/riscv-zihintpause.c

@@ -1,8 +1,8 @@
 // NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py
 // RUN: %clang_cc1 -triple riscv32 -target-feature +zihintpause -emit-llvm %s -o - \
 // RUN:     | FileCheck %s
-
-#include <stdint.h>
+// RUN: %clang_cc1 -triple riscv64 -target-feature +zihintpause -emit-llvm %s -o - \
+// RUN:     | FileCheck %s
 
 // CHECK-LABEL: @test_builtin_pause(
 // CHECK-NEXT:  entry:

llvm/lib/Target/RISCV/RISCVInstrInfo.td

@@ -2198,6 +2198,15 @@ def : Pat<(binop_allwusers<add> GPR:$rs1, immop_oneuse<AddiPair>:$rs2),
 def : Pat<(i64 (add GPR:$rs1, negImm:$rs2)), (SUB GPR:$rs1, negImm:$rs2)>;
 }
 
+//===----------------------------------------------------------------------===//
+// Zihintpause
+//===----------------------------------------------------------------------===//
+
+// Zihintpause
+let Predicates = [HasStdExtZihintpause] in {
+  def : Pat<(int_riscv_pause), (FENCE 0x1, 0x0)>;
+}
+
 //===----------------------------------------------------------------------===//
 // Standard extensions
 //===----------------------------------------------------------------------===//
@@ -2242,9 +2251,6 @@ include "RISCVInstrInfoZclsd.td"
 // Short Forward Branch
 include "RISCVInstrInfoSFB.td"
 
-// Zihintpause extensions
-include "RISCVInstrInfoZihintpause.td"
-
 //===----------------------------------------------------------------------===//
 // Vendor extensions
 //===----------------------------------------------------------------------===//