1 //===---- AMDCallingConv.td - Calling Conventions for Radeon GPUs ---------===//
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 // This describes the calling conventions for the AMD Radeon GPUs.
11 //===----------------------------------------------------------------------===//
13 // Inversion of CCIfInReg
14 class CCIfNotInReg<CCAction A> : CCIf<"!ArgFlags.isInReg()", A> {}
15 class CCIfExtend<CCAction A>
16 : CCIf<"ArgFlags.isSExt() || ArgFlags.isZExt()", A>;
18 // Calling convention for SI
19 def CC_SI : CallingConv<[
21 CCIfInReg<CCIfType<[f32, i32, f16, v2i16, v2f16] , CCAssignToReg<[
22 SGPR0, SGPR1, SGPR2, SGPR3, SGPR4, SGPR5, SGPR6, SGPR7,
23 SGPR8, SGPR9, SGPR10, SGPR11, SGPR12, SGPR13, SGPR14, SGPR15,
24 SGPR16, SGPR17, SGPR18, SGPR19, SGPR20, SGPR21, SGPR22, SGPR23,
25 SGPR24, SGPR25, SGPR26, SGPR27, SGPR28, SGPR29, SGPR30, SGPR31,
26 SGPR32, SGPR33, SGPR34, SGPR35, SGPR36, SGPR37, SGPR38, SGPR39,
27 SGPR40, SGPR41, SGPR42, SGPR43
30 // 32*4 + 4 is the minimum for a fetch shader consumer with 32 inputs.
31 CCIfNotInReg<CCIfType<[f32, i32, f16, v2i16, v2f16] , CCAssignToReg<[
32 VGPR0, VGPR1, VGPR2, VGPR3, VGPR4, VGPR5, VGPR6, VGPR7,
33 VGPR8, VGPR9, VGPR10, VGPR11, VGPR12, VGPR13, VGPR14, VGPR15,
34 VGPR16, VGPR17, VGPR18, VGPR19, VGPR20, VGPR21, VGPR22, VGPR23,
35 VGPR24, VGPR25, VGPR26, VGPR27, VGPR28, VGPR29, VGPR30, VGPR31,
36 VGPR32, VGPR33, VGPR34, VGPR35, VGPR36, VGPR37, VGPR38, VGPR39,
37 VGPR40, VGPR41, VGPR42, VGPR43, VGPR44, VGPR45, VGPR46, VGPR47,
38 VGPR48, VGPR49, VGPR50, VGPR51, VGPR52, VGPR53, VGPR54, VGPR55,
39 VGPR56, VGPR57, VGPR58, VGPR59, VGPR60, VGPR61, VGPR62, VGPR63,
40 VGPR64, VGPR65, VGPR66, VGPR67, VGPR68, VGPR69, VGPR70, VGPR71,
41 VGPR72, VGPR73, VGPR74, VGPR75, VGPR76, VGPR77, VGPR78, VGPR79,
42 VGPR80, VGPR81, VGPR82, VGPR83, VGPR84, VGPR85, VGPR86, VGPR87,
43 VGPR88, VGPR89, VGPR90, VGPR91, VGPR92, VGPR93, VGPR94, VGPR95,
44 VGPR96, VGPR97, VGPR98, VGPR99, VGPR100, VGPR101, VGPR102, VGPR103,
45 VGPR104, VGPR105, VGPR106, VGPR107, VGPR108, VGPR109, VGPR110, VGPR111,
46 VGPR112, VGPR113, VGPR114, VGPR115, VGPR116, VGPR117, VGPR118, VGPR119,
47 VGPR120, VGPR121, VGPR122, VGPR123, VGPR124, VGPR125, VGPR126, VGPR127,
48 VGPR128, VGPR129, VGPR130, VGPR131, VGPR132, VGPR133, VGPR134, VGPR135
52 def RetCC_SI_Shader : CallingConv<[
53 CCIfType<[i32] , CCAssignToReg<[
54 SGPR0, SGPR1, SGPR2, SGPR3, SGPR4, SGPR5, SGPR6, SGPR7,
55 SGPR8, SGPR9, SGPR10, SGPR11, SGPR12, SGPR13, SGPR14, SGPR15,
56 SGPR16, SGPR17, SGPR18, SGPR19, SGPR20, SGPR21, SGPR22, SGPR23,
57 SGPR24, SGPR25, SGPR26, SGPR27, SGPR28, SGPR29, SGPR30, SGPR31,
58 SGPR32, SGPR33, SGPR34, SGPR35, SGPR36, SGPR37, SGPR38, SGPR39,
59 SGPR40, SGPR41, SGPR42, SGPR43
62 // 32*4 + 4 is the minimum for a fetch shader with 32 outputs.
63 CCIfType<[f32, f16, v2f16] , CCAssignToReg<[
64 VGPR0, VGPR1, VGPR2, VGPR3, VGPR4, VGPR5, VGPR6, VGPR7,
65 VGPR8, VGPR9, VGPR10, VGPR11, VGPR12, VGPR13, VGPR14, VGPR15,
66 VGPR16, VGPR17, VGPR18, VGPR19, VGPR20, VGPR21, VGPR22, VGPR23,
67 VGPR24, VGPR25, VGPR26, VGPR27, VGPR28, VGPR29, VGPR30, VGPR31,
68 VGPR32, VGPR33, VGPR34, VGPR35, VGPR36, VGPR37, VGPR38, VGPR39,
69 VGPR40, VGPR41, VGPR42, VGPR43, VGPR44, VGPR45, VGPR46, VGPR47,
70 VGPR48, VGPR49, VGPR50, VGPR51, VGPR52, VGPR53, VGPR54, VGPR55,
71 VGPR56, VGPR57, VGPR58, VGPR59, VGPR60, VGPR61, VGPR62, VGPR63,
72 VGPR64, VGPR65, VGPR66, VGPR67, VGPR68, VGPR69, VGPR70, VGPR71,
73 VGPR72, VGPR73, VGPR74, VGPR75, VGPR76, VGPR77, VGPR78, VGPR79,
74 VGPR80, VGPR81, VGPR82, VGPR83, VGPR84, VGPR85, VGPR86, VGPR87,
75 VGPR88, VGPR89, VGPR90, VGPR91, VGPR92, VGPR93, VGPR94, VGPR95,
76 VGPR96, VGPR97, VGPR98, VGPR99, VGPR100, VGPR101, VGPR102, VGPR103,
77 VGPR104, VGPR105, VGPR106, VGPR107, VGPR108, VGPR109, VGPR110, VGPR111,
78 VGPR112, VGPR113, VGPR114, VGPR115, VGPR116, VGPR117, VGPR118, VGPR119,
79 VGPR120, VGPR121, VGPR122, VGPR123, VGPR124, VGPR125, VGPR126, VGPR127,
80 VGPR128, VGPR129, VGPR130, VGPR131, VGPR132, VGPR133, VGPR134, VGPR135
84 def CSR_AMDGPU_VGPRs_24_255 : CalleeSavedRegs<
85 (sequence "VGPR%u", 24, 255)
88 def CSR_AMDGPU_VGPRs_32_255 : CalleeSavedRegs<
89 (sequence "VGPR%u", 32, 255)
92 def CSR_AMDGPU_SGPRs_32_105 : CalleeSavedRegs<
93 (sequence "SGPR%u", 32, 105)
96 // Just to get the regmask, not for calling convention purposes.
97 def CSR_AMDGPU_AllVGPRs : CalleeSavedRegs<
98 (sequence "VGPR%u", 0, 255)
101 // Just to get the regmask, not for calling convention purposes.
102 def CSR_AMDGPU_AllAllocatableSRegs : CalleeSavedRegs<
103 (add (sequence "SGPR%u", 0, 105), VCC_LO, VCC_HI)
106 def CSR_AMDGPU_HighRegs : CalleeSavedRegs<
107 (add CSR_AMDGPU_VGPRs_32_255, CSR_AMDGPU_SGPRs_32_105)
110 // Calling convention for leaf functions
111 def CC_AMDGPU_Func : CallingConv<[
112 CCIfByVal<CCPassByVal<4, 4>>,
113 CCIfType<[i1], CCPromoteToType<i32>>,
114 CCIfType<[i1, i8, i16], CCIfExtend<CCPromoteToType<i32>>>,
115 CCIfType<[i32, f32, i16, f16, v2i16, v2f16, i1], CCAssignToReg<[
116 VGPR0, VGPR1, VGPR2, VGPR3, VGPR4, VGPR5, VGPR6, VGPR7,
117 VGPR8, VGPR9, VGPR10, VGPR11, VGPR12, VGPR13, VGPR14, VGPR15,
118 VGPR16, VGPR17, VGPR18, VGPR19, VGPR20, VGPR21, VGPR22, VGPR23,
119 VGPR24, VGPR25, VGPR26, VGPR27, VGPR28, VGPR29, VGPR30, VGPR31]>>,
120 CCIfType<[i32, f32, v2i16, v2f16, i16, f16, i1], CCAssignToStack<4, 4>>,
121 CCIfType<[i64, f64, v2i32, v2f32], CCAssignToStack<8, 4>>,
122 CCIfType<[v3i32, v3f32], CCAssignToStack<12, 4>>,
123 CCIfType<[v4i32, v4f32, v2i64, v2f64], CCAssignToStack<16, 4>>,
124 CCIfType<[v5i32, v5f32], CCAssignToStack<20, 4>>,
125 CCIfType<[v8i32, v8f32], CCAssignToStack<32, 4>>,
126 CCIfType<[v16i32, v16f32], CCAssignToStack<64, 4>>
129 // Calling convention for leaf functions
130 def RetCC_AMDGPU_Func : CallingConv<[
131 CCIfType<[i1], CCPromoteToType<i32>>,
132 CCIfType<[i1, i16], CCIfExtend<CCPromoteToType<i32>>>,
133 CCIfType<[i32, f32, i16, f16, v2i16, v2f16], CCAssignToReg<[
134 VGPR0, VGPR1, VGPR2, VGPR3, VGPR4, VGPR5, VGPR6, VGPR7,
135 VGPR8, VGPR9, VGPR10, VGPR11, VGPR12, VGPR13, VGPR14, VGPR15,
136 VGPR16, VGPR17, VGPR18, VGPR19, VGPR20, VGPR21, VGPR22, VGPR23,
137 VGPR24, VGPR25, VGPR26, VGPR27, VGPR28, VGPR29, VGPR30, VGPR31]>>,
140 def CC_AMDGPU : CallingConv<[
141 CCIf<"static_cast<const GCNSubtarget&>"
142 "(State.getMachineFunction().getSubtarget()).getGeneration() >= "
143 "AMDGPUSubtarget::SOUTHERN_ISLANDS",
144 CCDelegateTo<CC_SI>>,
145 CCIf<"static_cast<const GCNSubtarget&>"
146 "(State.getMachineFunction().getSubtarget()).getGeneration() >= "
147 "AMDGPUSubtarget::SOUTHERN_ISLANDS && State.getCallingConv() == CallingConv::C",
148 CCDelegateTo<CC_AMDGPU_Func>>