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llvm-6502/lib/Target/R600/R600RegisterInfo.td
Vincent Lejeune 92f24d403f R600: Prettier asmPrint of Alu 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180956 91177308-0d34-0410-b5e6-96231b3b80d8
2013-05-02 21:52:30 +00:00

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8.4 KiB
TableGen
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class R600Reg <string name, bits<16> encoding> : Register<name> {
let Namespace = "AMDGPU";
let HWEncoding = encoding;
}
class R600RegWithChan <string name, bits<9> sel, string chan> :
Register <name> {
field bits<2> chan_encoding = !if(!eq(chan, "X"), 0,
!if(!eq(chan, "Y"), 1,
!if(!eq(chan, "Z"), 2,
!if(!eq(chan, "W"), 3, 0))));
let HWEncoding{8-0} = sel;
let HWEncoding{10-9} = chan_encoding;
let Namespace = "AMDGPU";
}
class R600Reg_128<string n, list<Register> subregs, bits<16> encoding> :
RegisterWithSubRegs<n, subregs> {
let Namespace = "AMDGPU";
let SubRegIndices = [sub0, sub1, sub2, sub3];
let HWEncoding = encoding;
}
foreach Index = 0-127 in {
foreach Chan = [ "X", "Y", "Z", "W" ] in {
// 32-bit Temporary Registers
def T#Index#_#Chan : R600RegWithChan <"T"#Index#"."#Chan, Index, Chan>;
// Indirect addressing offset registers
def Addr#Index#_#Chan : R600RegWithChan <"T("#Index#" + AR.x)."#Chan,
Index, Chan>;
def TRegMem#Index#_#Chan : R600RegWithChan <"T"#Index#"."#Chan, Index,
Chan>;
}
// 128-bit Temporary Registers
def T#Index#_XYZW : R600Reg_128 <"T"#Index#".XYZW",
[!cast<Register>("T"#Index#"_X"),
!cast<Register>("T"#Index#"_Y"),
!cast<Register>("T"#Index#"_Z"),
!cast<Register>("T"#Index#"_W")],
Index>;
}
// KCACHE_BANK0
foreach Index = 159-128 in {
foreach Chan = [ "X", "Y", "Z", "W" ] in {
// 32-bit Temporary Registers
def KC0_#Index#_#Chan : R600RegWithChan <"KC0["#Index#"-128]."#Chan, Index, Chan>;
}
// 128-bit Temporary Registers
def KC0_#Index#_XYZW : R600Reg_128 <"KC0["#Index#"-128].XYZW",
[!cast<Register>("KC0_"#Index#"_X"),
!cast<Register>("KC0_"#Index#"_Y"),
!cast<Register>("KC0_"#Index#"_Z"),
!cast<Register>("KC0_"#Index#"_W")],
Index>;
}
// KCACHE_BANK1
foreach Index = 191-160 in {
foreach Chan = [ "X", "Y", "Z", "W" ] in {
// 32-bit Temporary Registers
def KC1_#Index#_#Chan : R600RegWithChan <"KC1["#Index#"-160]."#Chan, Index, Chan>;
}
// 128-bit Temporary Registers
def KC1_#Index#_XYZW : R600Reg_128 <"KC1["#Index#"-160].XYZW",
[!cast<Register>("KC1_"#Index#"_X"),
!cast<Register>("KC1_"#Index#"_Y"),
!cast<Register>("KC1_"#Index#"_Z"),
!cast<Register>("KC1_"#Index#"_W")],
Index>;
}
// Array Base Register holding input in FS
foreach Index = 448-480 in {
def ArrayBase#Index : R600Reg<"ARRAY_BASE", Index>;
}
// Special Registers
def ZERO : R600Reg<"0.0", 248>;
def ONE : R600Reg<"1.0", 249>;
def NEG_ONE : R600Reg<"-1.0", 249>;
def ONE_INT : R600Reg<"1", 250>;
def HALF : R600Reg<"0.5", 252>;
def NEG_HALF : R600Reg<"-0.5", 252>;
def ALU_LITERAL_X : R600RegWithChan<"literal.x", 253, "X">;
def ALU_LITERAL_Y : R600RegWithChan<"literal.y", 253, "Y">;
def ALU_LITERAL_Z : R600RegWithChan<"literal.z", 253, "Z">;
def ALU_LITERAL_W : R600RegWithChan<"literal.w", 253, "W">;
def PV_X : R600RegWithChan<"PV.x", 254, "X">;
def PV_Y : R600RegWithChan<"PV.y", 254, "Y">;
def PV_Z : R600RegWithChan<"PV.z", 254, "Z">;
def PV_W : R600RegWithChan<"PV.w", 254, "W">;
def PREDICATE_BIT : R600Reg<"PredicateBit", 0>;
def PRED_SEL_OFF: R600Reg<"Pred_sel_off", 0>;
def PRED_SEL_ZERO : R600Reg<"Pred_sel_zero", 2>;
def PRED_SEL_ONE : R600Reg<"Pred_sel_one", 3>;
def AR_X : R600Reg<"AR.x", 0>;
def R600_ArrayBase : RegisterClass <"AMDGPU", [f32, i32], 32,
(add (sequence "ArrayBase%u", 448, 480))>;
// special registers for ALU src operands
// const buffer reference, SRCx_SEL contains index
def ALU_CONST : R600Reg<"CBuf", 0>;
// interpolation param reference, SRCx_SEL contains index
def ALU_PARAM : R600Reg<"Param", 0>;
let isAllocatable = 0 in {
// XXX: Only use the X channel, until we support wider stack widths
def R600_Addr : RegisterClass <"AMDGPU", [i32], 127, (add (sequence "Addr%u_X", 0, 127))>;
} // End isAllocatable = 0
def R600_KC0_X : RegisterClass <"AMDGPU", [f32, i32], 32,
(add (sequence "KC0_%u_X", 128, 159))>;
def R600_KC0_Y : RegisterClass <"AMDGPU", [f32, i32], 32,
(add (sequence "KC0_%u_Y", 128, 159))>;
def R600_KC0_Z : RegisterClass <"AMDGPU", [f32, i32], 32,
(add (sequence "KC0_%u_Z", 128, 159))>;
def R600_KC0_W : RegisterClass <"AMDGPU", [f32, i32], 32,
(add (sequence "KC0_%u_W", 128, 159))>;
def R600_KC0 : RegisterClass <"AMDGPU", [f32, i32], 32,
(interleave R600_KC0_X, R600_KC0_Y,
R600_KC0_Z, R600_KC0_W)>;
def R600_KC1_X : RegisterClass <"AMDGPU", [f32, i32], 32,
(add (sequence "KC1_%u_X", 160, 191))>;
def R600_KC1_Y : RegisterClass <"AMDGPU", [f32, i32], 32,
(add (sequence "KC1_%u_Y", 160, 191))>;
def R600_KC1_Z : RegisterClass <"AMDGPU", [f32, i32], 32,
(add (sequence "KC1_%u_Z", 160, 191))>;
def R600_KC1_W : RegisterClass <"AMDGPU", [f32, i32], 32,
(add (sequence "KC1_%u_W", 160, 191))>;
def R600_KC1 : RegisterClass <"AMDGPU", [f32, i32], 32,
(interleave R600_KC1_X, R600_KC1_Y,
R600_KC1_Z, R600_KC1_W)>;
def R600_TReg32_X : RegisterClass <"AMDGPU", [f32, i32], 32,
(add (sequence "T%u_X", 0, 127), AR_X)>;
def R600_TReg32_Y : RegisterClass <"AMDGPU", [f32, i32], 32,
(add (sequence "T%u_Y", 0, 127))>;
def R600_TReg32_Z : RegisterClass <"AMDGPU", [f32, i32], 32,
(add (sequence "T%u_Z", 0, 127))>;
def R600_TReg32_W : RegisterClass <"AMDGPU", [f32, i32], 32,
(add (sequence "T%u_W", 0, 127))>;
def R600_TReg32 : RegisterClass <"AMDGPU", [f32, i32], 32,
(interleave R600_TReg32_X, R600_TReg32_Y,
R600_TReg32_Z, R600_TReg32_W)>;
def R600_Reg32 : RegisterClass <"AMDGPU", [f32, i32], 32, (add
R600_TReg32,
R600_ArrayBase,
R600_Addr,
ZERO, HALF, ONE, ONE_INT, PV_X, ALU_LITERAL_X, NEG_ONE, NEG_HALF,
ALU_CONST, ALU_PARAM
)>;
def R600_Predicate : RegisterClass <"AMDGPU", [i32], 32, (add
PRED_SEL_OFF, PRED_SEL_ZERO, PRED_SEL_ONE)>;
def R600_Predicate_Bit: RegisterClass <"AMDGPU", [i32], 32, (add
PREDICATE_BIT)>;
def R600_Reg128 : RegisterClass<"AMDGPU", [v4f32, v4i32], 128,
(add (sequence "T%u_XYZW", 0, 127))> {
let CopyCost = -1;
}
//===----------------------------------------------------------------------===//
// Register classes for indirect addressing
//===----------------------------------------------------------------------===//
// Super register for all the Indirect Registers. This register class is used
// by the REG_SEQUENCE instruction to specify the registers to use for direct
// reads / writes which may be written / read by an indirect address.
class IndirectSuper<string n, list<Register> subregs> :
RegisterWithSubRegs<n, subregs> {
let Namespace = "AMDGPU";
let SubRegIndices =
[sub0, sub1, sub2, sub3, sub4, sub5, sub6, sub7,
sub8, sub9, sub10, sub11, sub12, sub13, sub14, sub15];
}
def IndirectSuperReg : IndirectSuper<"Indirect",
[TRegMem0_X, TRegMem1_X, TRegMem2_X, TRegMem3_X, TRegMem4_X, TRegMem5_X,
TRegMem6_X, TRegMem7_X, TRegMem8_X, TRegMem9_X, TRegMem10_X, TRegMem11_X,
TRegMem12_X, TRegMem13_X, TRegMem14_X, TRegMem15_X]
>;
def IndirectReg : RegisterClass<"AMDGPU", [f32, i32], 32, (add IndirectSuperReg)>;
// This register class defines the registers that are the storage units for
// the "Indirect Addressing" pseudo memory space.
// XXX: Only use the X channel, until we support wider stack widths
def TRegMem : RegisterClass<"AMDGPU", [f32, i32], 32,
(add (sequence "TRegMem%u_X", 0, 16))
>;
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