| // 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 unsigned 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 1; // "r0" |
| // CHECK: case '1': // 2 strings to match. |
| // CHECK: return 3; // "r1" |
| // CHECK: case '2': // 2 strings to match. |
| // CHECK: return 5; // "r2" |
| // CHECK: case '3': // 2 strings to match. |
| // CHECK: return 7; // "r3" |
| // CHECK: } |
| // CHECK: break; |
| // CHECK: } |
| // CHECK: return 0; |
| // CHECK: } |
| |
| // CHECK: static unsigned 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 1; // "x0" |
| // CHECK: case '1': // 2 strings to match. |
| // CHECK: return 3; // "x1" |
| // CHECK: case '2': // 2 strings to match. |
| // CHECK: return 5; // "x2" |
| // CHECK: case '3': // 2 strings to match. |
| // CHECK: return 7; // "x3" |
| // CHECK: } |
| // CHECK: break; |
| // CHECK: } |
| // CHECK: return 0; |
| // CHECK: } |