File: InitValue.td

package info (click to toggle)
llvm-toolchain-16 1%3A16.0.6-15~deb12u1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,634,792 kB
  • sloc: cpp: 6,179,261; ansic: 1,216,205; asm: 741,319; python: 196,614; objc: 75,325; f90: 49,640; lisp: 32,396; pascal: 12,286; sh: 9,394; perl: 7,442; ml: 5,494; awk: 3,523; makefile: 2,723; javascript: 1,206; xml: 886; fortran: 581; cs: 573
file content (46 lines) | stat: -rw-r--r-- 1,224 bytes parent folder | download | duplicates (19)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
// RUN: llvm-tblgen -gen-disassembler -I %p/../../../include %s | FileCheck %s

include "llvm/Target/Target.td"

def archInstrInfo : InstrInfo { }

def arch : Target {
    let InstructionSet = archInstrInfo;
}

let OutOperandList = (outs), Size = 2 in {

def foo : Instruction {
    let InOperandList = (ins i32imm:$factor);
    field bits<16> Inst;
    field bits<16> SoftFail = 0;
    bits<8> factor;
    let factor{0} = 0; // zero initial value
    let Inst{15...8} = factor{7...0};
    }

def bar : Instruction {
    let InOperandList = (ins i32imm:$factor);
    field bits<16> Inst;
    field bits<16> SoftFail = 0;
    bits<8> factor;
    let factor{0} = 1; // non-zero initial value
    let Inst{15...8} = factor{7...0};
    }

def bax : Instruction {
    let InOperandList = (ins i32imm:$factor);
    field bits<16> Inst;
    field bits<16> SoftFail = 0;
    bits<33> factor;
    let factor{32} = 1; // non-zero initial value
    let Inst{15...8} = factor{32...25};
    }

}

// CHECK: tmp = fieldFromInstruction(insn, 9, 7) << 1;
// CHECK: tmp = 0x1;
// CHECK: insertBits(tmp, fieldFromInstruction(insn, 9, 7), 1, 7);
// CHECK: tmp = 0x100000000;
// CHECK: insertBits(tmp, fieldFromInstruction(insn, 8, 7), 25, 7);