[PATCH] D16364: AMDGPU: Remove AMDGPU.trunc intrinsic

[Matt Arsenault via llvm-commits]

arsenm created this revision.
arsenm added a reviewer: tstellarAMD.
arsenm added a subscriber: llvm-commits.
Herald added a subscriber: arsenm.

http://reviews.llvm.org/D16364

Files:
  lib/Target/AMDGPU/AMDGPUISelLowering.cpp
  lib/Target/AMDGPU/AMDGPUIntrinsics.td
  test/CodeGen/AMDGPU/llvm.AMDGPU.trunc.ll

Index: test/CodeGen/AMDGPU/llvm.AMDGPU.trunc.ll
===================================================================
--- test/CodeGen/AMDGPU/llvm.AMDGPU.trunc.ll
+++ /dev/null
@@ -1,17 +0,0 @@
-; RUN: llc < %s -march=r600 -mcpu=redwood | FileCheck --check-prefix=R600 %s
-; RUN: llc < %s -march=amdgcn -mcpu=verde -verify-machineinstrs | FileCheck --check-prefix=SI %s
-; RUN: llc < %s -march=amdgcn -mcpu=tonga -verify-machineinstrs | FileCheck --check-prefix=SI %s
-
-; R600: {{^}}amdgpu_trunc:
-; R600: TRUNC {{\*? *}}T{{[0-9]+\.[XYZW]}}, KC0[2].Z
-; SI: {{^}}amdgpu_trunc:
-; SI: v_trunc_f32
-
-define void @amdgpu_trunc(float addrspace(1)* %out, float %x) {
-entry:
-  %0 = call float @llvm.AMDGPU.trunc(float %x)
-  store float %0, float addrspace(1)* %out
-  ret void
-}
-
-declare float @llvm.AMDGPU.trunc(float ) readnone
Index: lib/Target/AMDGPU/AMDGPUIntrinsics.td
===================================================================
--- lib/Target/AMDGPU/AMDGPUIntrinsics.td
+++ lib/Target/AMDGPU/AMDGPUIntrinsics.td
@@ -47,7 +47,6 @@
   def int_AMDGPU_txq : Intrinsic<[llvm_v4f32_ty], [llvm_v4f32_ty, llvm_i32_ty, llvm_i32_ty, llvm_i32_ty], [IntrNoMem]>;
   def int_AMDGPU_txd : Intrinsic<[llvm_v4f32_ty], [llvm_v4f32_ty, llvm_v4f32_ty, llvm_v4f32_ty, llvm_i32_ty, llvm_i32_ty, llvm_i32_ty], [IntrNoMem]>;
   def int_AMDGPU_txl : Intrinsic<[llvm_v4f32_ty], [llvm_v4f32_ty, llvm_i32_ty, llvm_i32_ty, llvm_i32_ty], [IntrNoMem]>;
-  def int_AMDGPU_trunc : Intrinsic<[llvm_float_ty], [llvm_float_ty], [IntrNoMem]>;
   def int_AMDGPU_ddx : Intrinsic<[llvm_v4f32_ty], [llvm_v4f32_ty, llvm_i32_ty, llvm_i32_ty, llvm_i32_ty], [IntrNoMem]>;
   def int_AMDGPU_ddy : Intrinsic<[llvm_v4f32_ty], [llvm_v4f32_ty, llvm_i32_ty, llvm_i32_ty, llvm_i32_ty], [IntrNoMem]>;
   def int_AMDGPU_umul24 : Intrinsic<[llvm_i32_ty], [llvm_i32_ty, llvm_i32_ty], [IntrNoMem]>;
Index: lib/Target/AMDGPU/AMDGPUISelLowering.cpp
===================================================================
--- lib/Target/AMDGPU/AMDGPUISelLowering.cpp
+++ lib/Target/AMDGPU/AMDGPUISelLowering.cpp
@@ -1046,8 +1046,6 @@
     case AMDGPUIntrinsic::AMDIL_exp: // Legacy name.
       return DAG.getNode(ISD::FEXP2, DL, VT, Op.getOperand(1));
 
-    case AMDGPUIntrinsic::AMDGPU_trunc: // Legacy name.
-      return DAG.getNode(ISD::FTRUNC, DL, VT, Op.getOperand(1));
     case AMDGPUIntrinsic::AMDGPU_brev: // Legacy name
       return DAG.getNode(ISD::BITREVERSE, DL, VT, Op.getOperand(1));
   }


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