radeon/llvm: use floor intrinsic instead of llvm.AMDIL.floor

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>

src/gallium/drivers/radeon/AMDGPUISelLowering.cpp

@@ -37,6 +37,7 @@ AMDGPUTargetLowering::AMDGPUTargetLowering(TargetMachine &TM) :
   setOperationAction(ISD::FPOW,   MVT::f32, Legal);
   setOperationAction(ISD::FLOG2,  MVT::f32, Legal);
   setOperationAction(ISD::FABS,   MVT::f32, Legal);
+  setOperationAction(ISD::FFLOOR, MVT::f32, Legal);
   setOperationAction(ISD::FRINT,  MVT::f32, Legal);
 
   setOperationAction(ISD::UDIV, MVT::i32, Expand);

src/gallium/drivers/radeon/AMDGPUIntrinsics.td

@@ -23,7 +23,6 @@ let TargetPrefix = "AMDGPU", isTarget = 1 in {
   def int_AMDGPU_cndlt : Intrinsic<[llvm_float_ty], [llvm_float_ty, llvm_float_ty, llvm_float_ty], [IntrNoMem]>;
   def int_AMDGPU_div : Intrinsic<[llvm_float_ty], [llvm_float_ty, llvm_float_ty], [IntrNoMem]>;
   def int_AMDGPU_dp4 : Intrinsic<[llvm_float_ty], [llvm_v4f32_ty, llvm_v4f32_ty], [IntrNoMem]>;
-  def int_AMDGPU_floor : Intrinsic<[llvm_float_ty], [llvm_float_ty], [IntrNoMem]>;
   def int_AMDGPU_kill : Intrinsic<[], [llvm_float_ty], []>;
   def int_AMDGPU_kilp : Intrinsic<[], [], []>;
   def int_AMDGPU_lrp : Intrinsic<[llvm_float_ty], [llvm_float_ty, llvm_float_ty, llvm_float_ty], [IntrNoMem]>;

src/gallium/drivers/radeon/R600Instructions.td

@@ -399,7 +399,7 @@ def RNDNE : R600_1OP <
 
 def FLOOR : R600_1OP <
   0x14, "FLOOR",
-  [(set R600_Reg32:$dst, (int_AMDGPU_floor R600_Reg32:$src))]
+  [(set R600_Reg32:$dst, (ffloor R600_Reg32:$src))]
 >;
 
 def MOV : InstR600 <0x19, (outs R600_Reg32:$dst),

src/gallium/drivers/radeon/SIInstructions.td

@@ -541,7 +541,7 @@ defm V_RNDNE_F32 : VOP1_32 <0x00000023, "V_RNDNE_F32",
   [(set VReg_32:$dst, (frint AllReg_32:$src0))]
 >;
 defm V_FLOOR_F32 : VOP1_32 <0x00000024, "V_FLOOR_F32",
-  [(set VReg_32:$dst, (int_AMDGPU_floor AllReg_32:$src0))]
+  [(set VReg_32:$dst, (ffloor AllReg_32:$src0))]
 >;
 defm V_EXP_F32 : VOP1_32 <0x00000025, "V_EXP_F32",
   [(set VReg_32:$dst, (fexp2 AllReg_32:$src0))]

src/gallium/drivers/radeon/radeon_setup_tgsi_llvm.c

@@ -1142,8 +1142,8 @@ void radeon_llvm_context_init(struct radeon_llvm_context * ctx)
 	bld_base->op_actions[TGSI_OPCODE_ENDLOOP].emit = endloop_emit;
 	bld_base->op_actions[TGSI_OPCODE_EX2].emit = build_tgsi_intrinsic_nomem;
 	bld_base->op_actions[TGSI_OPCODE_EX2].intr_name = "llvm.AMDIL.exp.";
-	bld_base->op_actions[TGSI_OPCODE_FLR].emit = build_tgsi_intrinsic_nomem;
-	bld_base->op_actions[TGSI_OPCODE_FLR].intr_name = "llvm.AMDGPU.floor";
+	bld_base->op_actions[TGSI_OPCODE_FLR].emit = build_tgsi_intrinsic_readonly;
+	bld_base->op_actions[TGSI_OPCODE_FLR].intr_name = "floor";
 	bld_base->op_actions[TGSI_OPCODE_FRC].emit = build_tgsi_intrinsic_nomem;
 	bld_base->op_actions[TGSI_OPCODE_FRC].intr_name = "llvm.AMDIL.fraction.";
 	bld_base->op_actions[TGSI_OPCODE_IF].emit = if_emit;