mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-19 01:13:25 +00:00
b384ab9ea1
allows ppcf128->int conversion to work with DeadInstructionElimination. This is now turned off but RM is harmless. It does not do a complete job of modeling the rounding mode. Revert marking MFCR as using all 7 CR subregisters; while correct, this caused the problem in PR 2964, plus the local RA crash noted in the comments. This was needed to make DeadInstructionElimination, but as we are not running that, it is backed out for now. Eventually it should go back in and the other problems fixed where they're broken. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58391 91177308-0d34-0410-b5e6-96231b3b80d8
361 lines
14 KiB
TableGen
361 lines
14 KiB
TableGen
//===- PPCRegisterInfo.td - The PowerPC Register File ------*- tablegen -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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//
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//===----------------------------------------------------------------------===//
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class PPCReg<string n> : Register<n> {
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let Namespace = "PPC";
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}
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// We identify all our registers with a 5-bit ID, for consistency's sake.
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// GPR - One of the 32 32-bit general-purpose registers
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class GPR<bits<5> num, string n> : PPCReg<n> {
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field bits<5> Num = num;
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}
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// GP8 - One of the 32 64-bit general-purpose registers
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class GP8<GPR SubReg, string n> : PPCReg<n> {
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field bits<5> Num = SubReg.Num;
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let SubRegs = [SubReg];
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}
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// SPR - One of the 32-bit special-purpose registers
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class SPR<bits<10> num, string n> : PPCReg<n> {
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field bits<10> Num = num;
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}
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// FPR - One of the 32 64-bit floating-point registers
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class FPR<bits<5> num, string n> : PPCReg<n> {
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field bits<5> Num = num;
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}
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// VR - One of the 32 128-bit vector registers
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class VR<bits<5> num, string n> : PPCReg<n> {
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field bits<5> Num = num;
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}
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// CR - One of the 8 4-bit condition registers
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class CR<bits<3> num, string n> : PPCReg<n> {
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field bits<3> Num = num;
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}
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// CRBIT - One of the 32 1-bit condition register fields
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class CRBIT<bits<5> num, string n> : PPCReg<n> {
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field bits<5> Num = num;
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}
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// General-purpose registers
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def R0 : GPR< 0, "r0">, DwarfRegNum<[0]>;
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def R1 : GPR< 1, "r1">, DwarfRegNum<[1]>;
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def R2 : GPR< 2, "r2">, DwarfRegNum<[2]>;
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def R3 : GPR< 3, "r3">, DwarfRegNum<[3]>;
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def R4 : GPR< 4, "r4">, DwarfRegNum<[4]>;
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def R5 : GPR< 5, "r5">, DwarfRegNum<[5]>;
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def R6 : GPR< 6, "r6">, DwarfRegNum<[6]>;
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def R7 : GPR< 7, "r7">, DwarfRegNum<[7]>;
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def R8 : GPR< 8, "r8">, DwarfRegNum<[8]>;
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def R9 : GPR< 9, "r9">, DwarfRegNum<[9]>;
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def R10 : GPR<10, "r10">, DwarfRegNum<[10]>;
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def R11 : GPR<11, "r11">, DwarfRegNum<[11]>;
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def R12 : GPR<12, "r12">, DwarfRegNum<[12]>;
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def R13 : GPR<13, "r13">, DwarfRegNum<[13]>;
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def R14 : GPR<14, "r14">, DwarfRegNum<[14]>;
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def R15 : GPR<15, "r15">, DwarfRegNum<[15]>;
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def R16 : GPR<16, "r16">, DwarfRegNum<[16]>;
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def R17 : GPR<17, "r17">, DwarfRegNum<[17]>;
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def R18 : GPR<18, "r18">, DwarfRegNum<[18]>;
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def R19 : GPR<19, "r19">, DwarfRegNum<[19]>;
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def R20 : GPR<20, "r20">, DwarfRegNum<[20]>;
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def R21 : GPR<21, "r21">, DwarfRegNum<[21]>;
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def R22 : GPR<22, "r22">, DwarfRegNum<[22]>;
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def R23 : GPR<23, "r23">, DwarfRegNum<[23]>;
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def R24 : GPR<24, "r24">, DwarfRegNum<[24]>;
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def R25 : GPR<25, "r25">, DwarfRegNum<[25]>;
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def R26 : GPR<26, "r26">, DwarfRegNum<[26]>;
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def R27 : GPR<27, "r27">, DwarfRegNum<[27]>;
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def R28 : GPR<28, "r28">, DwarfRegNum<[28]>;
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def R29 : GPR<29, "r29">, DwarfRegNum<[29]>;
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def R30 : GPR<30, "r30">, DwarfRegNum<[30]>;
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def R31 : GPR<31, "r31">, DwarfRegNum<[31]>;
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// 64-bit General-purpose registers
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def X0 : GP8< R0, "r0">, DwarfRegNum<[0]>;
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def X1 : GP8< R1, "r1">, DwarfRegNum<[1]>;
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def X2 : GP8< R2, "r2">, DwarfRegNum<[2]>;
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def X3 : GP8< R3, "r3">, DwarfRegNum<[3]>;
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def X4 : GP8< R4, "r4">, DwarfRegNum<[4]>;
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def X5 : GP8< R5, "r5">, DwarfRegNum<[5]>;
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def X6 : GP8< R6, "r6">, DwarfRegNum<[6]>;
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def X7 : GP8< R7, "r7">, DwarfRegNum<[7]>;
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def X8 : GP8< R8, "r8">, DwarfRegNum<[8]>;
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def X9 : GP8< R9, "r9">, DwarfRegNum<[9]>;
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def X10 : GP8<R10, "r10">, DwarfRegNum<[10]>;
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def X11 : GP8<R11, "r11">, DwarfRegNum<[11]>;
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def X12 : GP8<R12, "r12">, DwarfRegNum<[12]>;
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def X13 : GP8<R13, "r13">, DwarfRegNum<[13]>;
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def X14 : GP8<R14, "r14">, DwarfRegNum<[14]>;
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def X15 : GP8<R15, "r15">, DwarfRegNum<[15]>;
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def X16 : GP8<R16, "r16">, DwarfRegNum<[16]>;
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def X17 : GP8<R17, "r17">, DwarfRegNum<[17]>;
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def X18 : GP8<R18, "r18">, DwarfRegNum<[18]>;
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def X19 : GP8<R19, "r19">, DwarfRegNum<[19]>;
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def X20 : GP8<R20, "r20">, DwarfRegNum<[20]>;
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def X21 : GP8<R21, "r21">, DwarfRegNum<[21]>;
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def X22 : GP8<R22, "r22">, DwarfRegNum<[22]>;
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def X23 : GP8<R23, "r23">, DwarfRegNum<[23]>;
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def X24 : GP8<R24, "r24">, DwarfRegNum<[24]>;
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def X25 : GP8<R25, "r25">, DwarfRegNum<[25]>;
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def X26 : GP8<R26, "r26">, DwarfRegNum<[26]>;
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def X27 : GP8<R27, "r27">, DwarfRegNum<[27]>;
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def X28 : GP8<R28, "r28">, DwarfRegNum<[28]>;
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def X29 : GP8<R29, "r29">, DwarfRegNum<[29]>;
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def X30 : GP8<R30, "r30">, DwarfRegNum<[30]>;
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def X31 : GP8<R31, "r31">, DwarfRegNum<[31]>;
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// Floating-point registers
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def F0 : FPR< 0, "f0">, DwarfRegNum<[32]>;
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def F1 : FPR< 1, "f1">, DwarfRegNum<[33]>;
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def F2 : FPR< 2, "f2">, DwarfRegNum<[34]>;
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def F3 : FPR< 3, "f3">, DwarfRegNum<[35]>;
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def F4 : FPR< 4, "f4">, DwarfRegNum<[36]>;
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def F5 : FPR< 5, "f5">, DwarfRegNum<[37]>;
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def F6 : FPR< 6, "f6">, DwarfRegNum<[38]>;
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def F7 : FPR< 7, "f7">, DwarfRegNum<[39]>;
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def F8 : FPR< 8, "f8">, DwarfRegNum<[40]>;
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def F9 : FPR< 9, "f9">, DwarfRegNum<[41]>;
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def F10 : FPR<10, "f10">, DwarfRegNum<[42]>;
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def F11 : FPR<11, "f11">, DwarfRegNum<[43]>;
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def F12 : FPR<12, "f12">, DwarfRegNum<[44]>;
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def F13 : FPR<13, "f13">, DwarfRegNum<[45]>;
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def F14 : FPR<14, "f14">, DwarfRegNum<[46]>;
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def F15 : FPR<15, "f15">, DwarfRegNum<[47]>;
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def F16 : FPR<16, "f16">, DwarfRegNum<[48]>;
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def F17 : FPR<17, "f17">, DwarfRegNum<[49]>;
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def F18 : FPR<18, "f18">, DwarfRegNum<[50]>;
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def F19 : FPR<19, "f19">, DwarfRegNum<[51]>;
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def F20 : FPR<20, "f20">, DwarfRegNum<[52]>;
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def F21 : FPR<21, "f21">, DwarfRegNum<[53]>;
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def F22 : FPR<22, "f22">, DwarfRegNum<[54]>;
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def F23 : FPR<23, "f23">, DwarfRegNum<[55]>;
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def F24 : FPR<24, "f24">, DwarfRegNum<[56]>;
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def F25 : FPR<25, "f25">, DwarfRegNum<[57]>;
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def F26 : FPR<26, "f26">, DwarfRegNum<[58]>;
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def F27 : FPR<27, "f27">, DwarfRegNum<[59]>;
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def F28 : FPR<28, "f28">, DwarfRegNum<[60]>;
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def F29 : FPR<29, "f29">, DwarfRegNum<[61]>;
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def F30 : FPR<30, "f30">, DwarfRegNum<[62]>;
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def F31 : FPR<31, "f31">, DwarfRegNum<[63]>;
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// Vector registers
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def V0 : VR< 0, "v0">, DwarfRegNum<[77]>;
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def V1 : VR< 1, "v1">, DwarfRegNum<[78]>;
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def V2 : VR< 2, "v2">, DwarfRegNum<[79]>;
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def V3 : VR< 3, "v3">, DwarfRegNum<[80]>;
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def V4 : VR< 4, "v4">, DwarfRegNum<[81]>;
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def V5 : VR< 5, "v5">, DwarfRegNum<[82]>;
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def V6 : VR< 6, "v6">, DwarfRegNum<[83]>;
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def V7 : VR< 7, "v7">, DwarfRegNum<[84]>;
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def V8 : VR< 8, "v8">, DwarfRegNum<[85]>;
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def V9 : VR< 9, "v9">, DwarfRegNum<[86]>;
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def V10 : VR<10, "v10">, DwarfRegNum<[87]>;
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def V11 : VR<11, "v11">, DwarfRegNum<[88]>;
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def V12 : VR<12, "v12">, DwarfRegNum<[89]>;
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def V13 : VR<13, "v13">, DwarfRegNum<[90]>;
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def V14 : VR<14, "v14">, DwarfRegNum<[91]>;
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def V15 : VR<15, "v15">, DwarfRegNum<[92]>;
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def V16 : VR<16, "v16">, DwarfRegNum<[93]>;
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def V17 : VR<17, "v17">, DwarfRegNum<[94]>;
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def V18 : VR<18, "v18">, DwarfRegNum<[95]>;
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def V19 : VR<19, "v19">, DwarfRegNum<[96]>;
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def V20 : VR<20, "v20">, DwarfRegNum<[97]>;
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def V21 : VR<21, "v21">, DwarfRegNum<[98]>;
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def V22 : VR<22, "v22">, DwarfRegNum<[99]>;
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def V23 : VR<23, "v23">, DwarfRegNum<[100]>;
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def V24 : VR<24, "v24">, DwarfRegNum<[101]>;
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def V25 : VR<25, "v25">, DwarfRegNum<[102]>;
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def V26 : VR<26, "v26">, DwarfRegNum<[103]>;
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def V27 : VR<27, "v27">, DwarfRegNum<[104]>;
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def V28 : VR<28, "v28">, DwarfRegNum<[105]>;
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def V29 : VR<29, "v29">, DwarfRegNum<[106]>;
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def V30 : VR<30, "v30">, DwarfRegNum<[107]>;
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def V31 : VR<31, "v31">, DwarfRegNum<[108]>;
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// Condition registers
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def CR0 : CR<0, "cr0">, DwarfRegNum<[68]>;
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def CR1 : CR<1, "cr1">, DwarfRegNum<[69]>;
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def CR2 : CR<2, "cr2">, DwarfRegNum<[70]>;
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def CR3 : CR<3, "cr3">, DwarfRegNum<[71]>;
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def CR4 : CR<4, "cr4">, DwarfRegNum<[72]>;
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def CR5 : CR<5, "cr5">, DwarfRegNum<[73]>;
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def CR6 : CR<6, "cr6">, DwarfRegNum<[74]>;
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def CR7 : CR<7, "cr7">, DwarfRegNum<[75]>;
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// Condition register bits
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def CR0LT : CRBIT< 0, "0">, DwarfRegNum<[0]>;
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def CR0GT : CRBIT< 1, "1">, DwarfRegNum<[0]>;
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def CR0EQ : CRBIT< 2, "2">, DwarfRegNum<[0]>;
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def CR0UN : CRBIT< 3, "3">, DwarfRegNum<[0]>;
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def CR1LT : CRBIT< 4, "4">, DwarfRegNum<[0]>;
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def CR1GT : CRBIT< 5, "5">, DwarfRegNum<[0]>;
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def CR1EQ : CRBIT< 6, "6">, DwarfRegNum<[0]>;
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def CR1UN : CRBIT< 7, "7">, DwarfRegNum<[0]>;
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def CR2LT : CRBIT< 8, "8">, DwarfRegNum<[0]>;
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def CR2GT : CRBIT< 9, "9">, DwarfRegNum<[0]>;
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def CR2EQ : CRBIT<10, "10">, DwarfRegNum<[0]>;
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def CR2UN : CRBIT<11, "11">, DwarfRegNum<[0]>;
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def CR3LT : CRBIT<12, "12">, DwarfRegNum<[0]>;
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def CR3GT : CRBIT<13, "13">, DwarfRegNum<[0]>;
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def CR3EQ : CRBIT<14, "14">, DwarfRegNum<[0]>;
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def CR3UN : CRBIT<15, "15">, DwarfRegNum<[0]>;
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def CR4LT : CRBIT<16, "16">, DwarfRegNum<[0]>;
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def CR4GT : CRBIT<17, "17">, DwarfRegNum<[0]>;
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def CR4EQ : CRBIT<18, "18">, DwarfRegNum<[0]>;
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def CR4UN : CRBIT<19, "19">, DwarfRegNum<[0]>;
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def CR5LT : CRBIT<20, "20">, DwarfRegNum<[0]>;
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def CR5GT : CRBIT<21, "21">, DwarfRegNum<[0]>;
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def CR5EQ : CRBIT<22, "22">, DwarfRegNum<[0]>;
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def CR5UN : CRBIT<23, "23">, DwarfRegNum<[0]>;
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def CR6LT : CRBIT<24, "24">, DwarfRegNum<[0]>;
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def CR6GT : CRBIT<25, "25">, DwarfRegNum<[0]>;
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def CR6EQ : CRBIT<26, "26">, DwarfRegNum<[0]>;
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def CR6UN : CRBIT<27, "27">, DwarfRegNum<[0]>;
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def CR7LT : CRBIT<28, "28">, DwarfRegNum<[0]>;
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def CR7GT : CRBIT<29, "29">, DwarfRegNum<[0]>;
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def CR7EQ : CRBIT<30, "30">, DwarfRegNum<[0]>;
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def CR7UN : CRBIT<31, "31">, DwarfRegNum<[0]>;
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def : SubRegSet<1, [CR0, CR1, CR2, CR3, CR4, CR5, CR6, CR7],
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[CR0LT, CR1LT, CR2LT, CR3LT, CR4LT, CR5LT, CR6LT, CR7LT]>;
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def : SubRegSet<2, [CR0, CR1, CR2, CR3, CR4, CR5, CR6, CR7],
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[CR0GT, CR1GT, CR2GT, CR3GT, CR4GT, CR5GT, CR6GT, CR7GT]>;
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def : SubRegSet<3, [CR0, CR1, CR2, CR3, CR4, CR5, CR6, CR7],
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[CR0EQ, CR1EQ, CR2EQ, CR3EQ, CR4EQ, CR5EQ, CR6EQ, CR7EQ]>;
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def : SubRegSet<4, [CR0, CR1, CR2, CR3, CR4, CR5, CR6, CR7],
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[CR0UN, CR1UN, CR2UN, CR3UN, CR4UN, CR5UN, CR6UN, CR7UN]>;
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// Link register
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def LR : SPR<8, "lr">, DwarfRegNum<[65]>;
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//let Aliases = [LR] in
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def LR8 : SPR<8, "lr">, DwarfRegNum<[65]>;
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// Count register
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def CTR : SPR<9, "ctr">, DwarfRegNum<[66]>;
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def CTR8 : SPR<9, "ctr">, DwarfRegNum<[66]>;
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// VRsave register
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def VRSAVE: SPR<256, "VRsave">, DwarfRegNum<[107]>;
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// FP rounding mode: bits 30 and 31 of the FP status and control register
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// This is not allocated as a normal register; it appears only in
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// Uses and Defs. The ABI says it needs to be preserved by a function,
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// but this is not achieved by saving and restoring it as with
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// most registers, it has to be done in code; to make this work all the
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// return and call instructions are described as Uses of RM, so instructions
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// that do nothing but change RM will not get deleted.
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// Also, in the architecture it is not really a SPR; 512 is arbitrary.
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def RM: SPR<512, "**ROUNDING MODE**">, DwarfRegNum<[0]>;
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/// Register classes
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// Allocate volatiles first
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// then nonvolatiles in reverse order since stmw/lmw save from rN to r31
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def GPRC : RegisterClass<"PPC", [i32], 32,
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[R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12,
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R30, R29, R28, R27, R26, R25, R24, R23, R22, R21, R20, R19, R18, R17,
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R16, R15, R14, R13, R31, R0, R1, LR]>
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{
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let MethodProtos = [{
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iterator allocation_order_begin(const MachineFunction &MF) const;
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iterator allocation_order_end(const MachineFunction &MF) const;
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}];
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let MethodBodies = [{
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GPRCClass::iterator
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GPRCClass::allocation_order_begin(const MachineFunction &MF) const {
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// In Linux, r2 is reserved for the OS.
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if (!MF.getTarget().getSubtarget<PPCSubtarget>().isDarwin())
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return begin()+1;
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return begin();
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}
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GPRCClass::iterator
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GPRCClass::allocation_order_end(const MachineFunction &MF) const {
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// On PPC64, r13 is the thread pointer. Never allocate this register.
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// Note that this is overconservative, as it also prevents allocation of
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// R31 when the FP is not needed.
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if (MF.getTarget().getSubtarget<PPCSubtarget>().isPPC64())
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return end()-5; // don't allocate R13, R31, R0, R1, LR
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if (needsFP(MF))
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return end()-4; // don't allocate R31, R0, R1, LR
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else
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return end()-3; // don't allocate R0, R1, LR
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}
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}];
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}
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def G8RC : RegisterClass<"PPC", [i64], 64,
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[X2, X3, X4, X5, X6, X7, X8, X9, X10, X11, X12,
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X30, X29, X28, X27, X26, X25, X24, X23, X22, X21, X20, X19, X18, X17,
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X16, X15, X14, X31, X13, X0, X1, LR8]>
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{
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let MethodProtos = [{
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iterator allocation_order_begin(const MachineFunction &MF) const;
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iterator allocation_order_end(const MachineFunction &MF) const;
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}];
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let MethodBodies = [{
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G8RCClass::iterator
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G8RCClass::allocation_order_begin(const MachineFunction &MF) const {
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return begin();
|
|
}
|
|
G8RCClass::iterator
|
|
G8RCClass::allocation_order_end(const MachineFunction &MF) const {
|
|
if (needsFP(MF))
|
|
return end()-5;
|
|
else
|
|
return end()-4;
|
|
}
|
|
}];
|
|
}
|
|
|
|
|
|
|
|
def F8RC : RegisterClass<"PPC", [f64], 64, [F0, F1, F2, F3, F4, F5, F6, F7,
|
|
F8, F9, F10, F11, F12, F13, F14, F15, F16, F17, F18, F19, F20, F21,
|
|
F22, F23, F24, F25, F26, F27, F28, F29, F30, F31]>;
|
|
def F4RC : RegisterClass<"PPC", [f32], 32, [F0, F1, F2, F3, F4, F5, F6, F7,
|
|
F8, F9, F10, F11, F12, F13, F14, F15, F16, F17, F18, F19, F20, F21,
|
|
F22, F23, F24, F25, F26, F27, F28, F29, F30, F31]>;
|
|
|
|
def VRRC : RegisterClass<"PPC", [v16i8,v8i16,v4i32,v4f32], 128,
|
|
[V2, V3, V4, V5, V0, V1,
|
|
V6, V7, V8, V9, V10, V11, V12, V13, V14, V15, V16, V17, V18, V19, V20, V21,
|
|
V22, V23, V24, V25, V26, V27, V28, V29, V30, V31]>;
|
|
|
|
def CRRC : RegisterClass<"PPC", [i32], 32, [CR0, CR1, CR5, CR6, CR7, CR2,
|
|
CR3, CR4]>;
|
|
|
|
def CRBITRC : RegisterClass<"PPC", [i32], 32,
|
|
[CR0LT, CR0GT, CR0EQ, CR0UN,
|
|
CR1LT, CR1GT, CR1EQ, CR1UN,
|
|
CR2LT, CR2GT, CR2EQ, CR2UN,
|
|
CR3LT, CR3GT, CR3EQ, CR3UN,
|
|
CR4LT, CR4GT, CR4EQ, CR4UN,
|
|
CR5LT, CR5GT, CR5EQ, CR5UN,
|
|
CR6LT, CR6GT, CR6EQ, CR6UN,
|
|
CR7LT, CR7GT, CR7EQ, CR7UN
|
|
]>
|
|
{
|
|
let CopyCost = -1;
|
|
}
|
|
|
|
|
|
def CTRRC : RegisterClass<"PPC", [i32], 32, [CTR]>;
|
|
def CTRRC8 : RegisterClass<"PPC", [i64], 64, [CTR8]>;
|