llvm/test/MC/LoongArch/Relocations/relax-align.s

   1 ## The file testing Nop insertion with R_LARCH_ALIGN for relaxation.
   2
   3 # RUN: llvm-mc --filetype=obj --triple=loongarch64 --mattr=-relax %s -o %t
   4 # RUN: llvm-objdump -d %t | FileCheck %s --check-prefix=INSTR
   5 # RUN: llvm-readobj -r %t | FileCheck %s --check-prefix=RELOC
   6 # RUN: llvm-mc --filetype=obj --triple=loongarch64 --mattr=+relax %s -o %t.r
   7 # RUN: llvm-objdump -d %t.r | FileCheck %s --check-prefixes=INSTR,RELAX-INSTR
   8 # RUN: llvm-readobj -r %t.r | FileCheck %s --check-prefixes=RELOC,RELAX-RELOC
   9
  10 .text
  11 break 0
  12 # INSTR: break 0
  13
  14 ## Not emit R_LARCH_ALIGN if alignment directive is less than or equal to
  15 ## minimum code alignment(a.k.a 4).
  16 .p2align 2
  17 .p2align 1
  18 .p2align 0
  19
  20 ## Not emit instructions if max emit bytes less than min nop size.
  21 .p2align 4, , 2
  22
  23 ## Not emit R_LARCH_ALIGN if alignment directive with specific padding value.
  24 ## The behavior is the same as GNU assembler.
  25 break 1
  26 .p2align 4, 1
  27 # INSTR-NEXT:    break 1
  28 # INSTR-COUNT-2: 01 01 01 01
  29
  30 break 2
  31 .p2align 4, 1, 12
  32 # INSTR-NEXT:    break 2
  33 # INSTR-COUNT-3: 01 01 01 01
  34
  35 break 3
  36 .p2align 4
  37 # INSTR-NEXT:    break 3
  38 # INSTR-COUNT-3: nop
  39
  40 break 4
  41 .p2align 5
  42 .p2align 4
  43 # INSTR-NEXT:          break 4
  44 # INSTR-COUNT-3:       nop
  45 # RELAX-INSTR-COUNT-7: nop
  46
  47 break 5
  48 .p2align 4, , 11
  49 # INSTR-NEXT: break 5
  50 # RELAX-INSTR-COUNT-3: nop
  51
  52 break 6
  53 ## Not emit the third parameter.
  54 .p2align 4, , 12
  55 # INSTR-NEXT:       break 6
  56 # INSTR-NEXT:       nop
  57 # INSTR-NEXT:       nop
  58 # RELAX-INSTR-NEXT: nop
  59
  60 ret
  61 # INSNR-NEXT: ret
  62
  63 ## Test the symbol index is different from .text.
  64 .section .text2, "ax"
  65 .p2align 4
  66 .p2align 4, , 4
  67 break 7
  68
  69 # RELOC:            Relocations [
  70 # RELAX-RELOC-NEXT:   Section ({{.*}}) .rela.text {
  71 # RELAX-RELOC-NEXT:     0x24 R_LARCH_ALIGN - 0xC
  72 # RELAX-RELOC-NEXT:     0x34 R_LARCH_ALIGN - 0x1C
  73 # RELAX-RELOC-NEXT:     0x50 R_LARCH_ALIGN - 0xC
  74 # RELAX-RELOC-NEXT:     0x60 R_LARCH_ALIGN .Lla-relax-align0 0xB04
  75 # RELAX-RELOC-NEXT:     0x70 R_LARCH_ALIGN - 0xC
  76 # RELAX-RELOC-NEXT:   }
  77 # RELAX-RELOC-NEXT:   Section ({{.*}}) .rela.text2 {
  78 # RELAX-RELOC-NEXT:     0x0 R_LARCH_ALIGN - 0xC
  79 # RELAX-RELOC-NEXT:     0xC R_LARCH_ALIGN .Lla-relax-align1 0x404
  80 # RELAX-RELOC-NEXT:   }
  81 # RELOC-NEXT:       ]