[PATCH] D48119: [AArch64] Added Clang Codegen+Test Support for FP16 VCVTA_U16 intrinsic

[Luke Geeson via Phabricator via cfe-commits]

LukeGeeson created this revision.
LukeGeeson added a reviewer: SjoerdMeijer.
Herald added a reviewer: javed.absar.
Herald added a subscriber: kristof.beyls.

-Added support for existing IP for vcvta_u16_f16 instrinsic for Arm v8.2a 
-CGBuiltin simply adds cases for this intrinsic to gen the clang IR
-tests added for Aarch64 and Arm test suites
-tested and works using ninja check


Repository:
  rC Clang

https://reviews.llvm.org/D48119

Files:
  CodeGen/CGBuiltin.cpp
  CodeGen/aarch64-v8.2a-neon-intrinsics.c
  CodeGen/arm-v8.2a-neon-intrinsics.c


Index: CodeGen/arm-v8.2a-neon-intrinsics.c
===================================================================
--- CodeGen/arm-v8.2a-neon-intrinsics.c
+++ CodeGen/arm-v8.2a-neon-intrinsics.c
@@ -164,6 +164,13 @@
   return vcvta_s16_f16(a);
 }
 
+// CHECK-LABEL: test_vcvta_u16_f16
+// CHECK:  [[VCVT:%.*]] = call <4 x i16> @llvm.arm.neon.fcvtau.v4i16.v4f16(<4 x half> %a)
+// CHECK:  ret <4 x i16> [[VCVT]]
+int16x4_t test_vcvta_u16_f16 (float16x4_t a) {
+   return vcvta_u16_f16(a);
+}
+
 // CHECK-LABEL: test_vcvtaq_s16_f16
 // CHECK:  [[VCVT:%.*]] = call <8 x i16> @llvm.arm.neon.vcvtas.v8i16.v8f16(<8 x half> %a)
 // CHECK:  ret <8 x i16> [[VCVT]]
Index: CodeGen/aarch64-v8.2a-neon-intrinsics.c
===================================================================
--- CodeGen/aarch64-v8.2a-neon-intrinsics.c
+++ CodeGen/aarch64-v8.2a-neon-intrinsics.c
@@ -164,6 +164,13 @@
   return vcvta_s16_f16(a);
 }
 
+// CHECK-LABEL: test_vcvta_u16_f16
+// CHECK:  [[VCVT:%.*]] = call <4 x i16> @llvm.aarch64.neon.fcvtau.v4i16.v4f16(<4 x half> %a)
+// CHECK:  ret <4 x i16> [[VCVT]]
+int16x4_t test_vcvta_u16_f16 (float16x4_t a) {
+  return vcvta_u16_f16(a);
+}
+
 // CHECK-LABEL: test_vcvtaq_s16_f16
 // CHECK:  [[VCVT:%.*]] = call <8 x i16> @llvm.aarch64.neon.fcvtas.v8i16.v8f16(<8 x half> %a)
 // CHECK:  ret <8 x i16> [[VCVT]]
Index: CodeGen/CGBuiltin.cpp
===================================================================
--- CodeGen/CGBuiltin.cpp
+++ CodeGen/CGBuiltin.cpp
@@ -3998,6 +3998,7 @@
   NEONMAP0(vcvt_u32_v),
   NEONMAP0(vcvt_u64_v),
   NEONMAP1(vcvta_s16_v, arm_neon_vcvtas, 0),
+  NEONMAP1(vcvta_u16_v, arm_neon_vcvtau, 0),
   NEONMAP1(vcvta_s32_v, arm_neon_vcvtas, 0),
   NEONMAP1(vcvta_s64_v, arm_neon_vcvtas, 0),
   NEONMAP1(vcvta_u32_v, arm_neon_vcvtau, 0),
@@ -4882,6 +4883,7 @@
                 : Builder.CreateFPToSI(Ops[0], Ty, "vcvt");
   }
   case NEON::BI__builtin_neon_vcvta_s16_v:
+  case NEON::BI__builtin_neon_vcvta_u16_v:
   case NEON::BI__builtin_neon_vcvta_s32_v:
   case NEON::BI__builtin_neon_vcvta_s64_v:
   case NEON::BI__builtin_neon_vcvta_u32_v:
@@ -7618,6 +7620,7 @@
     return Builder.CreateFPToSI(Ops[0], Ty);
   }
   case NEON::BI__builtin_neon_vcvta_s16_v:
+  case NEON::BI__builtin_neon_vcvta_u16_v:
   case NEON::BI__builtin_neon_vcvta_s32_v:
   case NEON::BI__builtin_neon_vcvtaq_s16_v:
   case NEON::BI__builtin_neon_vcvtaq_s32_v:


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