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// RUN: llvm-tblgen -gen-asm-matcher -I %p/../../include %s | FileCheck %s
// Check that MatchRegisterName and MatchRegisterAltName are generated
// correctly when multiple registers are defined with the same name and
// AllowDuplicateRegisterNames is set.
include "llvm/Target/Target.td"
def ArchInstrInfo : InstrInfo;
def ArchAsmParser : AsmParser {
let AllowDuplicateRegisterNames = 1;
let ShouldEmitMatchRegisterAltName = 1;
}
def Arch : Target {
let InstructionSet = ArchInstrInfo;
let AssemblyParsers = [ArchAsmParser];
}
let Namespace = "Arch" in {
class ArchReg<string n, list <string> alt, list <RegAltNameIndex> altidx>
: Register<n> {
let AltNames = alt;
let RegAltNameIndices = altidx;
}
def ABIRegAltName : RegAltNameIndex;
foreach i = 0...3 in {
def R#i#_32 : ArchReg<"r"#i, ["x"#i], [ABIRegAltName]>;
def R#i#_64 : ArchReg<"r"#i, ["x"#i], [ABIRegAltName]>;
}
} // Namespace = "Arch"
def GPR32 : RegisterClass<"Arch", [i32], 32, (add
(sequence "R%u_32", 0, 3)
)>;
def GPR64 : RegisterClass<"Arch", [i64], 64, (add
(sequence "R%u_64", 0, 3)
)>;
// CHECK: static MCRegister MatchRegisterName(StringRef Name) {
// CHECK: switch (Name.size()) {
// CHECK: default: break;
// CHECK: case 2: // 8 strings to match.
// CHECK: if (Name[0] != 'r')
// CHECK: break;
// CHECK: switch (Name[1]) {
// CHECK: default: break;
// CHECK: case '0': // 2 strings to match.
// CHECK: return Arch::R0_32; // "r0"
// CHECK: case '1': // 2 strings to match.
// CHECK: return Arch::R1_32; // "r1"
// CHECK: case '2': // 2 strings to match.
// CHECK: return Arch::R2_32; // "r2"
// CHECK: case '3': // 2 strings to match.
// CHECK: return Arch::R3_32; // "r3"
// CHECK: }
// CHECK: break;
// CHECK: }
// CHECK: return Arch::NoRegister;
// CHECK: }
// CHECK: static MCRegister MatchRegisterAltName(StringRef Name) {
// CHECK: switch (Name.size()) {
// CHECK: default: break;
// CHECK: case 2: // 8 strings to match.
// CHECK: if (Name[0] != 'x')
// CHECK: break;
// CHECK: switch (Name[1]) {
// CHECK: default: break;
// CHECK: case '0': // 2 strings to match.
// CHECK: return Arch::R0_32; // "x0"
// CHECK: case '1': // 2 strings to match.
// CHECK: return Arch::R1_32; // "x1"
// CHECK: case '2': // 2 strings to match.
// CHECK: return Arch::R2_32; // "x2"
// CHECK: case '3': // 2 strings to match.
// CHECK: return Arch::R3_32; // "x3"
// CHECK: }
// CHECK: break;
// CHECK: }
// CHECK: return Arch::NoRegister;
// CHECK: }
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