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[Hexagon] Reconfiguring register alternate names.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224455 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Colin LeMahieu 2014-12-17 20:35:11 +00:00
parent 0a91afabd5
commit 648facfff4
1 changed files with 9 additions and 13 deletions
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22
lib/Target/Hexagon/HexagonRegisterInfo.td
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@ -13,8 +13,10 @@
let Namespace = "Hexagon" in {
class HexagonReg<bits<5> num, string n> : Register<n> {
class HexagonReg<bits<5> num, string n, list<string> alt = [],
list<Register> alias = []> : Register<n> {
field bits<5> Num;
let Aliases = alias;
let HWEncoding{4-0} = num;
}
@ -26,7 +28,7 @@ let Namespace = "Hexagon" in {
// Registers are identified with 5-bit ID numbers.
// Ri - 32-bit integer registers.
class Ri<bits<5> num, string n> : HexagonReg<num, n> {
class Ri<bits<5> num, string n, list<string> alt = []> : HexagonReg<num, n, alt> {
let Num = num;
}
@ -53,23 +55,17 @@ let Namespace = "Hexagon" in {
let Num = num;
}
// Rj - aliased integer registers
class Rj<string n, Ri R>: HexagonReg<R.Num, n> {
let Num = R.Num;
let Aliases = [R];
}
def subreg_loreg : SubRegIndex<32>;
def subreg_hireg : SubRegIndex<32, 32>;
// Integer registers.
foreach I = 0-31 in {
def R#I : Ri<I, "r"#I>, DwarfRegNum<[I]>;
foreach i = 0-28 in {
def R#i : Ri<i, "r"#i>, DwarfRegNum<[i]>;
}
def SP : Rj<"sp", R29>, DwarfRegNum<[29]>;
def FP : Rj<"fp", R30>, DwarfRegNum<[30]>;
def LR : Rj<"lr", R31>, DwarfRegNum<[31]>;
def R29 : Ri<29, "r29", ["sp"]>, DwarfRegNum<[29]>;
def R30 : Ri<30, "r30", ["fp"]>, DwarfRegNum<[30]>;
def R31 : Ri<31, "r31", ["lr"]>, DwarfRegNum<[31]>;
// Aliases of the R* registers used to hold 64-bit int values (doubles).
let SubRegIndices = [subreg_loreg, subreg_hireg], CoveredBySubRegs = 1 in {