[ARM] Add a builtin to allow you to use the 'sevl' instruction.

llvm-svn: 191816

clang/include/clang/Basic/BuiltinsARM.def

@@ -58,6 +58,9 @@ BUILTIN(__builtin_arm_crc32cw, "UiUiUi", "nc")
 BUILTIN(__builtin_arm_crc32d, "UiUiLLUi", "nc")
 BUILTIN(__builtin_arm_crc32cd, "UiUiLLUi", "nc")
 
+// HINT
+BUILTIN(__builtin_arm_sevl, "v", "")
+
 // NEON
 #define GET_NEON_BUILTINS
 #include "clang/Basic/arm_neon.inc"

clang/lib/CodeGen/CGBuiltin.cpp

@@ -2372,6 +2372,11 @@ Value *CodeGenFunction::EmitARMBuiltinExpr(unsigned BuiltinID,
     return Builder.CreateCall(F);
   }
 
+  if (BuiltinID == ARM::BI__builtin_arm_sevl) {
+    Function *F = CGM.getIntrinsic(Intrinsic::arm_sevl);
+    return Builder.CreateCall(F);
+  }
+
   // CRC32
   Intrinsic::ID CRCIntrinsicID = Intrinsic::not_intrinsic;
   switch (BuiltinID) {

clang/test/CodeGen/builtins-arm.c

@@ -18,3 +18,9 @@ void test_eh_return_data_regno()
   res = __builtin_eh_return_data_regno(0);  // CHECK: store volatile i32 0
   res = __builtin_eh_return_data_regno(1);  // CHECK: store volatile i32 1
 }
+
+void sevl() {
+  __builtin_arm_sevl();
+}
+
+// CHECK: call {{.*}} @llvm.arm.sevl