1 //===-- CaymanInstructions.td - CM Instruction defs -------*- tablegen -*-===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
9 // TableGen definitions for instructions which are available only on Cayman
12 //===----------------------------------------------------------------------===//
14 def isCayman : Predicate<"Subtarget->hasCaymanISA()">;
16 //===----------------------------------------------------------------------===//
17 // Cayman Instructions
18 //===----------------------------------------------------------------------===//
20 let SubtargetPredicate = isCayman in {
22 def MULADD_INT24_cm : R600_3OP <0x08, "MULADD_INT24",
23 [(set i32:$dst, (AMDGPUmad_i24 i32:$src0, i32:$src1, i32:$src2))], VecALU
25 def MUL_INT24_cm : R600_2OP <0x5B, "MUL_INT24",
26 [(set i32:$dst, (AMDGPUmul_i24 i32:$src0, i32:$src1))], VecALU
29 def : IMad24Pat<MULADD_INT24_cm>;
33 def RECIP_IEEE_cm : RECIP_IEEE_Common<0x86>;
35 def MULLO_INT_cm : MULLO_INT_Common<0x8F>;
36 def MULHI_INT_cm : MULHI_INT_Common<0x90>;
37 def MULLO_UINT_cm : MULLO_UINT_Common<0x91>;
38 def MULHI_UINT_cm : MULHI_UINT_Common<0x92>;
39 def MULHI_INT_cm24 : MULHI_INT24_Common<0x5c>;
40 def MULHI_UINT_cm24 : MULHI_UINT24_Common<0xb2>;
42 def RECIPSQRT_CLAMPED_cm : RECIPSQRT_CLAMPED_Common<0x87>;
43 def EXP_IEEE_cm : EXP_IEEE_Common<0x81>;
44 def LOG_IEEE_cm : LOG_IEEE_Common<0x83>;
45 def RECIP_CLAMPED_cm : RECIP_CLAMPED_Common<0x84>;
46 def RECIPSQRT_IEEE_cm : RECIPSQRT_IEEE_Common<0x89>;
47 def SIN_cm : SIN_Common<0x8D>;
48 def COS_cm : COS_Common<0x8E>;
51 def : RsqPat<RECIPSQRT_IEEE_cm, f32>;
53 def : SqrtPat<RECIPSQRT_IEEE_cm, RECIP_IEEE_cm>;
55 def : POW_Common <LOG_IEEE_cm, EXP_IEEE_cm, MUL>;
57 defm DIV_cm : DIV_Common<RECIP_IEEE_cm>;
59 // RECIP_UINT emulation for Cayman
60 // The multiplication scales from [0,1) to the unsigned integer range,
61 // rounding down a bit to avoid unwanted overflow.
63 (AMDGPUurecip i32:$src0),
64 (FLT_TO_UINT_eg (MUL_IEEE (RECIP_IEEE_cm (UINT_TO_FLT_eg $src0)),
65 (MOV_IMM_I32 CONST.FP_4294966784)))
68 def CF_END_CM : CF_CLAUSE_EG<32, (ins), "CF_END"> {
76 class RAT_STORE_DWORD <RegisterClass rc, ValueType vt, bits<4> mask> :
77 CF_MEM_RAT_CACHELESS <0x14, 0, mask,
78 (ins rc:$rw_gpr, R600_TReg32_X:$index_gpr),
79 "STORE_DWORD $rw_gpr, $index_gpr",
80 [(store_global vt:$rw_gpr, i32:$index_gpr)]> {
81 let eop = 0; // This bit is not used on Cayman.
84 def RAT_STORE_DWORD32 : RAT_STORE_DWORD <R600_TReg32_X, i32, 0x1>;
85 def RAT_STORE_DWORD64 : RAT_STORE_DWORD <R600_Reg64, v2i32, 0x3>;
86 def RAT_STORE_DWORD128 : RAT_STORE_DWORD <R600_Reg128, v4i32, 0xf>;
88 def RAT_STORE_TYPED_cm: CF_MEM_RAT_STORE_TYPED<0> {
89 let eop = 0; // This bit is not used on Cayman.
92 class VTX_READ_cm <string name, dag outs>
93 : VTX_WORD0_cm, VTX_READ<name, outs, []> {
98 let FETCH_WHOLE_QUAD = 0;
100 // XXX: We can infer this field based on the SRC_GPR. This would allow us
101 // to store vertex addresses in any channel, not just X.
104 let STRUCTURED_READ = 0;
106 let COALESCED_READ = 0;
108 let Inst{31-0} = Word0;
112 : VTX_READ_cm <"VTX_READ_8 $dst_gpr, $src_gpr",
113 (outs R600_TReg32_X:$dst_gpr)> {
116 let DST_SEL_Y = 7; // Masked
117 let DST_SEL_Z = 7; // Masked
118 let DST_SEL_W = 7; // Masked
119 let DATA_FORMAT = 1; // FMT_8
123 : VTX_READ_cm <"VTX_READ_16 $dst_gpr, $src_gpr",
124 (outs R600_TReg32_X:$dst_gpr)> {
126 let DST_SEL_Y = 7; // Masked
127 let DST_SEL_Z = 7; // Masked
128 let DST_SEL_W = 7; // Masked
129 let DATA_FORMAT = 5; // FMT_16
134 : VTX_READ_cm <"VTX_READ_32 $dst_gpr, $src_gpr",
135 (outs R600_TReg32_X:$dst_gpr)> {
138 let DST_SEL_Y = 7; // Masked
139 let DST_SEL_Z = 7; // Masked
140 let DST_SEL_W = 7; // Masked
141 let DATA_FORMAT = 0xD; // COLOR_32
143 // This is not really necessary, but there were some GPU hangs that appeared
144 // to be caused by ALU instructions in the next instruction group that wrote
145 // to the $src_gpr registers of the VTX_READ.
147 // %t3_x = VTX_READ_PARAM_32_eg killed %t2_x, 24
149 //Adding this constraint prevents this from happening.
150 let Constraints = "$src_gpr.ptr = $dst_gpr";
154 : VTX_READ_cm <"VTX_READ_64 $dst_gpr.XY, $src_gpr",
155 (outs R600_Reg64:$dst_gpr)> {
161 let DATA_FORMAT = 0x1D; // COLOR_32_32
165 : VTX_READ_cm <"VTX_READ_128 $dst_gpr.XYZW, $src_gpr",
166 (outs R600_Reg128:$dst_gpr)> {
172 let DATA_FORMAT = 0x22; // COLOR_32_32_32_32
174 // XXX: Need to force VTX_READ_128 instructions to write to the same register
175 // that holds its buffer address to avoid potential hangs. We can't use
176 // the same constraint as VTX_READ_32_eg, because the $src_gpr.ptr and $dst
177 // registers are different sizes.
180 //===----------------------------------------------------------------------===//
181 // VTX Read from parameter memory space
182 //===----------------------------------------------------------------------===//
183 def : R600Pat<(i32:$dst_gpr (vtx_id3_az_extloadi8 ADDRVTX_READ:$src_gpr)),
184 (VTX_READ_8_cm MEMxi:$src_gpr, 3)>;
185 def : R600Pat<(i32:$dst_gpr (vtx_id3_az_extloadi16 ADDRVTX_READ:$src_gpr)),
186 (VTX_READ_16_cm MEMxi:$src_gpr, 3)>;
187 def : R600Pat<(i32:$dst_gpr (vtx_id3_load ADDRVTX_READ:$src_gpr)),
188 (VTX_READ_32_cm MEMxi:$src_gpr, 3)>;
189 def : R600Pat<(v2i32:$dst_gpr (vtx_id3_load ADDRVTX_READ:$src_gpr)),
190 (VTX_READ_64_cm MEMxi:$src_gpr, 3)>;
191 def : R600Pat<(v4i32:$dst_gpr (vtx_id3_load ADDRVTX_READ:$src_gpr)),
192 (VTX_READ_128_cm MEMxi:$src_gpr, 3)>;
194 //===----------------------------------------------------------------------===//
195 // VTX Read from constant memory space
196 //===----------------------------------------------------------------------===//
197 def : R600Pat<(i32:$dst_gpr (vtx_id2_az_extloadi8 ADDRVTX_READ:$src_gpr)),
198 (VTX_READ_8_cm MEMxi:$src_gpr, 2)>;
199 def : R600Pat<(i32:$dst_gpr (vtx_id2_az_extloadi16 ADDRVTX_READ:$src_gpr)),
200 (VTX_READ_16_cm MEMxi:$src_gpr, 2)>;
201 def : R600Pat<(i32:$dst_gpr (vtx_id2_load ADDRVTX_READ:$src_gpr)),
202 (VTX_READ_32_cm MEMxi:$src_gpr, 2)>;
203 def : R600Pat<(v2i32:$dst_gpr (vtx_id2_load ADDRVTX_READ:$src_gpr)),
204 (VTX_READ_64_cm MEMxi:$src_gpr, 2)>;
205 def : R600Pat<(v4i32:$dst_gpr (vtx_id2_load ADDRVTX_READ:$src_gpr)),
206 (VTX_READ_128_cm MEMxi:$src_gpr, 2)>;
208 //===----------------------------------------------------------------------===//
209 // VTX Read from global memory space
210 //===----------------------------------------------------------------------===//
211 def : R600Pat<(i32:$dst_gpr (vtx_id1_az_extloadi8 ADDRVTX_READ:$src_gpr)),
212 (VTX_READ_8_cm MEMxi:$src_gpr, 1)>;
213 def : R600Pat<(i32:$dst_gpr (vtx_id1_az_extloadi16 ADDRVTX_READ:$src_gpr)),
214 (VTX_READ_16_cm MEMxi:$src_gpr, 1)>;
215 def : R600Pat<(i32:$dst_gpr (vtx_id1_load ADDRVTX_READ:$src_gpr)),
216 (VTX_READ_32_cm MEMxi:$src_gpr, 1)>;
217 def : R600Pat<(v2i32:$dst_gpr (vtx_id1_load ADDRVTX_READ:$src_gpr)),
218 (VTX_READ_64_cm MEMxi:$src_gpr, 1)>;
219 def : R600Pat<(v4i32:$dst_gpr (vtx_id1_load ADDRVTX_READ:$src_gpr)),
220 (VTX_READ_128_cm MEMxi:$src_gpr, 1)>;
222 } // End let SubtargetPredicate = isCayman