r330012 - [NEON] Support vrndns_f32 intrinsic

[Ivan A. Kosarev via cfe-commits]

Author: kosarev
Date: Fri Apr 13 05:46:02 2018
New Revision: 330012

URL: http://llvm.org/viewvc/llvm-project?rev=330012&view=rev
Log:
[NEON] Support vrndns_f32 intrinsic

Differential Revision: https://reviews.llvm.org/D45515

Modified:
    cfe/trunk/include/clang/Basic/arm_neon.td
    cfe/trunk/lib/CodeGen/CGBuiltin.cpp
    cfe/trunk/test/CodeGen/arm-neon-directed-rounding.c

Modified: cfe/trunk/include/clang/Basic/arm_neon.td
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Basic/arm_neon.td?rev=330012&r1=330011&r2=330012&view=diff
==============================================================================
--- cfe/trunk/include/clang/Basic/arm_neon.td (original)
+++ cfe/trunk/include/clang/Basic/arm_neon.td Fri Apr 13 05:46:02 2018
@@ -1116,6 +1116,12 @@ def SCALAR_FCVTZU_N_U64 : SInst<"vcvt_n_
 }
 
 ////////////////////////////////////////////////////////////////////////////////
+// Scalar Floating-point Round to Integral
+let ArchGuard = "__ARM_ARCH >= 8 && defined(__ARM_FEATURE_DIRECTED_ROUNDING)" in {
+def SCALAR_FRINTN_S32 : SInst<"vrndn", "ss", "Sf">;
+}
+
+////////////////////////////////////////////////////////////////////////////////
 // Scalar Reduce Pairwise Addition (Scalar and Floating Point)
 def SCALAR_ADDP  : SInst<"vpadd", "sd", "SfSHlSHdSHUl">;
 

Modified: cfe/trunk/lib/CodeGen/CGBuiltin.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/CGBuiltin.cpp?rev=330012&r1=330011&r2=330012&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/CGBuiltin.cpp (original)
+++ cfe/trunk/lib/CodeGen/CGBuiltin.cpp Fri Apr 13 05:46:02 2018
@@ -5590,6 +5590,12 @@ Value *CodeGenFunction::EmitARMBuiltinEx
   case NEON::BI__builtin_neon_vgetq_lane_f32:
     return Builder.CreateExtractElement(Ops[0], Ops[1], "vget_lane");
 
+  case NEON::BI__builtin_neon_vrndns_f32: {
+    Value *Arg = EmitScalarExpr(E->getArg(0));
+    llvm::Type *Tys[] = {Arg->getType()};
+    Function *F = CGM.getIntrinsic(Intrinsic::arm_neon_vrintn, Tys);
+    return Builder.CreateCall(F, {Arg}, "vrndn"); }
+
   case NEON::BI__builtin_neon_vset_lane_i8:
   case NEON::BI__builtin_neon_vset_lane_i16:
   case NEON::BI__builtin_neon_vset_lane_i32:

Modified: cfe/trunk/test/CodeGen/arm-neon-directed-rounding.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/arm-neon-directed-rounding.c?rev=330012&r1=330011&r2=330012&view=diff
==============================================================================
--- cfe/trunk/test/CodeGen/arm-neon-directed-rounding.c (original)
+++ cfe/trunk/test/CodeGen/arm-neon-directed-rounding.c Fri Apr 13 05:46:02 2018
@@ -1,4 +1,6 @@
-// RUN: %clang_cc1 -triple thumbv8-linux-gnueabihf -target-cpu cortex-a57 -ffreestanding -disable-O0-optnone -emit-llvm %s -o - | opt -S -mem2reg | FileCheck %s
+// RUN: %clang_cc1 -triple thumbv8-linux-gnueabihf -target-cpu cortex-a57 \
+// RUN:     -ffreestanding -disable-O0-optnone -emit-llvm %s -o - | \
+// RUN:     opt -S -mem2reg | FileCheck %s
 
 #include <arm_neon.h>
 
@@ -85,3 +87,10 @@ float32x2_t test_vrnd_f32(float32x2_t a)
 float32x4_t test_vrndq_f32(float32x4_t a) {
   return vrndq_f32(a);
 }
+
+// CHECK-LABEL: define float @test_vrndns_f32(float %a) #0 {
+// CHECK:   [[VRNDN_I:%.*]] = call float @llvm.arm.neon.vrintn.f32(float %a) #2
+// CHECK:   ret float [[VRNDN_I]]
+float32_t test_vrndns_f32(float32_t a) {
+  return vrndns_f32(a);
+}