39 lines
1.2 KiB
TableGen
39 lines
1.2 KiB
TableGen
|
// RUN: llvm-tblgen -gen-dag-isel -I %p/../../include %s 2>&1 | FileCheck %s
|
||
|
|
|
||
|
|
include "llvm/Target/Target.td"
|
||
|
|
|
||
|
|
// Minimal Target definition
|
||
|
|
def DemoInstrInfo : InstrInfo;
|
||
|
|
def Demo : Target {
|
||
|
|
let InstructionSet = DemoInstrInfo;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Some registers which can hold ints or floats
|
||
|
|
foreach i = 0...7 in
|
||
|
|
def "R" # i: Register<"r" # i>;
|
||
|
|
def GPR : RegisterClass<"Demo", [i32, f32], 32, (sequence "R%u", 0, 7)>;
|
||
|
|
|
||
|
|
// Instruction to convert an int to a float
|
||
|
|
def i2f : Instruction {
|
||
|
|
let Size = 2;
|
||
|
|
let OutOperandList = (outs GPR:$dst);
|
||
|
|
let InOperandList = (ins GPR:$src);
|
||
|
|
let AsmString = "i2f $dst, $src";
|
||
|
|
}
|
||
|
|
|
||
|
|
// Some kind of special type-conversion node supported by this target
|
||
|
|
def specialconvert : SDNode<"TEST_TARGET_ISD::SPECIAL_CONVERT", SDTUnaryOp>;
|
||
|
|
|
||
|
|
// A PatFrags that matches either bitconvert or the special version
|
||
|
|
def anyconvert : PatFrags<(ops node:$src),
|
||
|
|
[(bitconvert node:$src),
|
||
|
|
(specialconvert node:$src)]>;
|
||
|
|
|
||
|
|
// And a rule that matches that PatFrag and turns it into i2f
|
||
|
|
def : Pat<(f32 (anyconvert (i32 GPR:$val))), (i2f GPR:$val)>;
|
||
|
|
|
||
|
|
// CHECK: SwitchOpcode{{.*}}ISD::BITCAST
|
||
|
|
// CHECK: MorphNodeTo1{{.*}}i2f
|
||
|
|
// CHECK: SwitchOpcode{{.*}}TEST_TARGET_ISD::SPECIAL_CONVERT
|
||
|
|
// CHECK: MorphNodeTo1{{.*}}i2f
|