test/MC/ARM/invalid-instructions-spellcheck.s

   1 @ RUN: not llvm-mc -triple=arm -show-encoding < %s 2>&1 | FileCheck %s
   2 @ RUN: not llvm-mc -triple=thumb -show-encoding < %s 2>&1 | FileCheck %s --check-prefix=CHECK-THUMB
   3
   4 @ This tests the mnemonic spell checker.
   5
   6 @ First check what happens when an instruction is omitted:
   7
   8   r1, r2, r3
   9
  10 @ CHECK:      error: unexpected token in operand
  11 @ CHECK-NEXT: r1, r2, r3
  12 @ CHECK-NEXT:   ^
  13
  14 @ We don't want to see a suggestion here; the edit distance is too large to
  15 @ give sensible suggestions:
  16
  17   aaaaaaaaaaaaaaa r1, r2, r3
  18
  19 @ CHECK:      error: invalid instruction
  20 @ CHECK-NEXT: aaaaaaaaaaaaaaa r1, r2, r3
  21 @ CHECK-NEXT: ^
  22
  23 @ Check that we get one suggestion: 'pushh' is 1 edit away, i.e. an deletion.
  24
  25   pushh r1, r2, r3
  26
  27 @CHECK:      error: invalid instruction, did you mean: push?
  28 @CHECK-NEXT: pushh r1, r2, r3
  29 @CHECK-NEXT: ^
  30
  31   adXd r1, r2, r3
  32
  33 @ Check edit distance 1 and 2: 'add' has edit distance of 1 (a deletion),
  34 @ and 'qadd' a distance of 2 (a deletion and an insertion)
  35
  36 @ CHECK:      error: invalid instruction, did you mean: add, qadd?
  37 @ CHECK-NEXT: adXd r1, r2, r3
  38 @ CHECK-NEXT: ^
  39
  40 @ Check edit distance 1 and 2, just insertions:
  41
  42   ad r1, r2, r3
  43
  44 @ CHECK:      error: invalid instruction, did you mean: adc, add, adr, and, qadd?
  45 @ CHECK-NEXT: ad r1, r2, r3
  46 @ CHECK-NEXT: ^
  47
  48 @ Check an instruction that is 2 edits away, and also has a lot of candidates:
  49
  50   ldre r1, r2, r3
  51
  52 @ CHECK:      error: invalid instruction, did you mean: ldr, ldrb, ldrd, ldrex, ldrexb, ldrexd, ldrexh, ldrh, ldrt?
  53 @ CHECK-NEXT: ldre r1, r2, r3
  54 @ CHECK-NEXT: ^
  55
  56 @ Here it is checked that we don't suggest instructions that are not supported.
  57 @ For example, in Thumb mode we don't want to see suggestions 'faddd' of 'qadd'
  58 @ because they are not supported.
  59
  60   fadd r1, r2, r3
  61
  62 @ CHECK-THUMB: error: invalid instruction, did you mean: add?
  63 @ CHECK-THUMB: fadd r1, r2, r3
  64 @ CHECK-THUMB: ^
  65
  66 @ CHECK:      error: invalid instruction, did you mean: add, qadd?
  67 @ CHECK-NEXT: fadd r1, r2, r3
  68 @ CHECK-NEXT: ^