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llvm-mirror/test/TableGen/DuplicateFieldValues.td
Vedant Kumar 907de80fa2 [tablegen] Delete duplicates from a vector without skipping elements
Tablegen's -gen-instr-info pass has a bug in its emitEnums() routine.
The function intends for values in a vector to be deduplicated, but it
accidentally skips over elements after performing a deletion.

I think there are smarter ways of doing this deduplication, but we can
do that in a follow-up commit if there's interest. See the thread:
[PATCH] TableGen InstrMapping Bug fix.

Patch by Tyler Kenney!

llvm-svn: 288408
2016-12-01 19:38:50 +00:00

85 lines
1.8 KiB
TableGen

// RUN: llvm-tblgen -gen-instr-info -I %p/../../include %s | FileCheck %s
// CHECK: ABCForm_A
// CHECK-NOT: ABCForm_A
//
// include Target.td for InstrMapping class and define minimally required objects
//
include "llvm/Target/Target.td"
class DFVReg<string n> : Register<n> {
let Namespace = "DFV";
}
def R0 : DFVReg<"r0">;
def DFVRegClass : RegisterClass<"DFV",[i32],0,(add R0)>;
def DFVInstrInfo : InstrInfo;
def DFVTest : Target {
let InstructionSet = DFVInstrInfo;
}
//
// Define a number of a InstrMappings with repeated ValueCol fields
//
class ABCRel;
def getAFormFromBForm : InstrMapping {
let FilterClass = "ABCRel";
let RowFields = ["BaseName"];
let ColFields = ["ABCForm"];
let KeyCol = ["B"];
let ValueCols = [["A"]];
}
def getAFormFromCForm : InstrMapping {
let FilterClass = "ABCRel";
let RowFields = ["BaseName"];
let ColFields = ["ABCForm"];
let KeyCol = ["C"];
let ValueCols = [["A"]];
}
def getAFormFromDForm : InstrMapping {
let FilterClass = "ABCRel";
let RowFields = ["BaseName"];
let ColFields = ["ABCForm"];
let KeyCol = ["D"];
let ValueCols = [["A"]];
}
def getAFormFromEForm : InstrMapping {
let FilterClass = "ABCRel";
let RowFields = ["BaseName"];
let ColFields = ["ABCForm"];
let KeyCol = ["E"];
let ValueCols = [["A"]];
}
class I : Instruction {
let Namespace = "DFV";
let OutOperandList = (outs);
let InOperandList = (ins);
string BaseName = "";
string ABCForm = "";
}
class isAForm { string ABCForm = "A"; }
class isBForm { string ABCForm = "B"; }
class isCForm { string ABCForm = "C"; }
class isDForm { string ABCForm = "D"; }
class isEForm { string ABCForm = "E"; }
let BaseName = "0" in {
def A0 : I, ABCRel, isAForm;
def B0 : I, ABCRel, isBForm;
def C0 : I, ABCRel, isCForm;
def D0 : I, ABCRel, isDForm;
def E0 : I, ABCRel, isEForm;
}