[PATCH] D45514: [NEON] Support intrinsic for scalar and vector versions of the VRINTN instruction

[Ivan Kosarev via Phabricator via llvm-commits]

kosarev created this revision.
kosarev added reviewers: t.p.northover, rengolin, SjoerdMeijer.
Herald added a subscriber: javed.absar.

We need it to implement the vrndns_f32() NEON intrinsic.


https://reviews.llvm.org/D45514

Files:
  include/llvm/IR/IntrinsicsARM.td
  lib/Target/ARM/ARMInstrVFP.td


Index: lib/Target/ARM/ARMInstrVFP.td
===================================================================
--- lib/Target/ARM/ARMInstrVFP.td
+++ lib/Target/ARM/ARMInstrVFP.td
@@ -977,7 +977,7 @@
 }
 
 defm VRINTA : vrint_inst_anpm<"a", 0b00, fround>;
-defm VRINTN : vrint_inst_anpm<"n", 0b01>;
+defm VRINTN : vrint_inst_anpm<"n", 0b01, int_arm_neon_vrintn>;
 defm VRINTP : vrint_inst_anpm<"p", 0b10, fceil>;
 defm VRINTM : vrint_inst_anpm<"m", 0b11, ffloor>;
 
Index: include/llvm/IR/IntrinsicsARM.td
===================================================================
--- include/llvm/IR/IntrinsicsARM.td
+++ include/llvm/IR/IntrinsicsARM.td
@@ -369,6 +369,10 @@
   : Intrinsic<[llvm_anyvector_ty],
               [LLVMMatchType<0>, LLVMTruncatedType<0>, LLVMTruncatedType<0>],
               [IntrNoMem]>;
+
+class Neon_1FloatArg_Intrinsic
+  : Intrinsic<[llvm_anyfloat_ty], [LLVMMatchType<0>], [IntrNoMem]>;
+
 class Neon_CvtFxToFP_Intrinsic
   : Intrinsic<[llvm_anyfloat_ty], [llvm_anyint_ty, llvm_i32_ty], [IntrNoMem]>;
 class Neon_CvtFPToFx_Intrinsic
@@ -591,8 +595,8 @@
 def int_arm_neon_vtbx3 : Neon_Tbl5Arg_Intrinsic;
 def int_arm_neon_vtbx4 : Neon_Tbl6Arg_Intrinsic;
 
-// Vector Rounding
-def int_arm_neon_vrintn : Neon_1Arg_Intrinsic;
+// Vector and Scalar Rounding.
+def int_arm_neon_vrintn : Neon_1FloatArg_Intrinsic;
 def int_arm_neon_vrintx : Neon_1Arg_Intrinsic;
 def int_arm_neon_vrinta : Neon_1Arg_Intrinsic;
 def int_arm_neon_vrintz : Neon_1Arg_Intrinsic;


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