test/MC/ELF/relax-arith2.s

   1 // RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - | llvm-objdump -d - | FileCheck  %s
   2
   3 // Test that we avoid relaxing these instructions and instead generate versions
   4 // that use 8-bit immediate values.
   5
   6 bar:
   7 // CHECK:      Disassembly of section imul:
   8 // CHECK-EMPTY:
   9 // CHECK-NEXT: imul:
  10 // CHECK-NEXT:   0: 66 6b db 80                   imulw $-128, %bx, %bx
  11 // CHECK-NEXT:   4: 66 6b 1c 25 00 00 00 00 7f    imulw $127, 0, %bx
  12 // CHECK-NEXT:   d: 6b db 00                      imull $0, %ebx, %ebx
  13 // CHECK-NEXT:  10: 6b 1c 25 00 00 00 00 01       imull $1, 0, %ebx
  14 // CHECK-NEXT:  18: 48 6b db ff                   imulq $-1, %rbx, %rbx
  15 // CHECK-NEXT:  1c: 48 6b 1c 25 00 00 00 00 2a    imulq $42, 0, %rbx
  16         .section imul,"x"
  17         imul $-128, %bx,  %bx
  18         imul $127, bar,  %bx
  19         imul $0, %ebx, %ebx
  20         imul $1, bar,  %ebx
  21         imul $-1, %rbx, %rbx
  22         imul $42, bar,  %rbx
  23
  24
  25 // CHECK:      Disassembly of section and:
  26 // CHECK-EMPTY:
  27 // CHECK-NEXT: and:
  28 // CHECK-NEXT:   0: 66 83 e3 7f                   andw $127, %bx
  29 // CHECK-NEXT:   4: 66 83 24 25 00 00 00 00 00    andw $0, 0
  30 // CHECK-NEXT:   d: 83 e3 01                      andl $1, %ebx
  31 // CHECK-NEXT:  10: 83 24 25 00 00 00 00 ff       andl $-1, 0
  32 // CHECK-NEXT:  18: 48 83 e3 2a                   andq $42, %rbx
  33 // CHECK-NEXT:  1c: 48 83 24 25 00 00 00 00 80    andq $-128, 0
  34         .section and,"x"
  35         and  $127, %bx
  36         andw $0, bar
  37         and  $1, %ebx
  38         andl $-1, bar
  39         and  $42, %rbx
  40         andq $-128, bar
  41
  42 // CHECK:      Disassembly of section or:
  43 // CHECK-EMPTY:
  44 // CHECK-NEXT: or:
  45 // CHECK-NEXT:   0: 66 83 cb 00                   orw $0, %bx
  46 // CHECK-NEXT:   4: 66 83 0c 25 00 00 00 00 01    orw $1, 0
  47 // CHECK-NEXT:   d: 83 cb ff                      orl $-1, %ebx
  48 // CHECK-NEXT:  10: 83 0c 25 00 00 00 00 2a       orl $42, 0
  49 // CHECK-NEXT:  18: 48 83 cb 80                   orq $-128, %rbx
  50 // CHECK-NEXT:  1c: 48 83 0c 25 00 00 00 00 7f    orq $127, 0
  51         .section or,"x"
  52         or  $0, %bx
  53         orw $1, bar
  54         or  $-1, %ebx
  55         orl $42, bar
  56         or  $-128, %rbx
  57         orq $127, bar
  58
  59 // CHECK:      Disassembly of section xor:
  60 // CHECK-EMPTY:
  61 // CHECK-NEXT: xor:
  62 // CHECK-NEXT:   0: 66 83 f3 01                   xorw $1, %bx
  63 // CHECK-NEXT:   4: 66 83 34 25 00 00 00 00 ff    xorw $-1, 0
  64 // CHECK-NEXT:   d: 83 f3 2a                      xorl $42, %ebx
  65 // CHECK-NEXT:  10: 83 34 25 00 00 00 00 80       xorl $-128, 0
  66 // CHECK-NEXT:  18: 48 83 f3 7f                   xorq $127, %rbx
  67 // CHECK-NEXT:  1c: 48 83 34 25 00 00 00 00 00    xorq $0, 0
  68         .section xor,"x"
  69         xor  $1, %bx
  70         xorw $-1, bar
  71         xor  $42, %ebx
  72         xorl $-128, bar
  73         xor  $127, %rbx
  74         xorq $0, bar
  75
  76 // CHECK:      Disassembly of section add:
  77 // CHECK-EMPTY:
  78 // CHECK-NEXT: add:
  79 // CHECK-NEXT:   0: 66 83 c3 ff                   addw $-1, %bx
  80 // CHECK-NEXT:   4: 66 83 04 25 00 00 00 00 2a    addw $42, 0
  81 // CHECK-NEXT:   d: 83 c3 80                      addl $-128, %ebx
  82 // CHECK-NEXT:  10: 83 04 25 00 00 00 00 7f       addl $127, 0
  83 // CHECK-NEXT:  18: 48 83 c3 00                   addq $0, %rbx
  84 // CHECK-NEXT:  1c: 48 83 04 25 00 00 00 00 01    addq $1, 0
  85         .section add,"x"
  86         add  $-1, %bx
  87         addw $42, bar
  88         add  $-128, %ebx
  89         addl $127, bar
  90         add  $0, %rbx
  91         addq $1, bar
  92
  93 // CHECK:      Disassembly of section sub:
  94 // CHECK-EMPTY:
  95 // CHECK-NEXT: sub:
  96 // CHECK-NEXT:   0: 66 83 eb 2a                   subw $42, %bx
  97 // CHECK-NEXT:   4: 66 83 2c 25 00 00 00 00 80    subw $-128, 0
  98 // CHECK-NEXT:   d: 83 eb 7f                      subl $127, %ebx
  99 // CHECK-NEXT:  10: 83 2c 25 00 00 00 00 00       subl $0, 0
 100 // CHECK-NEXT:  18: 48 83 eb 01                   subq $1, %rbx
 101 // CHECK-NEXT:  1c: 48 83 2c 25 00 00 00 00 ff    subq $-1, 0
 102         .section sub,"x"
 103         sub  $42, %bx
 104         subw $-128, bar
 105         sub  $127, %ebx
 106         subl $0, bar
 107         sub  $1, %rbx
 108         subq $-1, bar
 109
 110 // CHECK:      Disassembly of section cmp:
 111 // CHECK-EMPTY:
 112 // CHECK-NEXT: cmp:
 113 // CHECK-NEXT:   0: 66 83 fb 80                   cmpw $-128, %bx
 114 // CHECK-NEXT:   4: 66 83 3c 25 00 00 00 00 7f    cmpw $127, 0
 115 // CHECK-NEXT:   d: 83 fb 00                      cmpl $0, %ebx
 116 // CHECK-NEXT:  10: 83 3c 25 00 00 00 00 01       cmpl $1, 0
 117 // CHECK-NEXT:  18: 48 83 fb ff                   cmpq $-1, %rbx
 118 // CHECK-NEXT:  1c: 48 83 3c 25 00 00 00 00 2a    cmpq $42, 0
 119         .section cmp,"x"
 120         cmp  $-128, %bx
 121         cmpw $127, bar
 122         cmp  $0, %ebx
 123         cmpl $1, bar
 124         cmp  $-1, %rbx
 125         cmpq $42, bar
 126
 127 // CHECK:      Disassembly of section push:
 128 // CHECK-EMPTY:
 129 // CHECK-NEXT: push:
 130 // CHECK-NEXT:   0: 66 6a 80                      pushw $-128
 131 // CHECK-NEXT:   3: 66 6a 7f                      pushw $127
 132 // CHECK-NEXT:   6: 6a 80                         pushq $-128
 133 // CHECK-NEXT:   8: 6a 7f                         pushq $127
 134         .section push,"x"
 135         pushw $-128
 136         pushw $127
 137         push  $-128
 138         push  $127