lld/test/MachO/icf-arm64.s

   1 # REQUIRES: aarch64
   2 # RUN: rm -rf %t; split-file %s %t
   3
   4 # RUN: llvm-mc -filetype=obj -triple=arm64-apple-darwin19.0.0 %t/main.s -o %t/main.o
   5 # RUN: llvm-mc -filetype=obj -triple=arm64-apple-darwin19.0.0 %t/f2.s -o %t/f2.o
   6 # RUN: %lld -arch arm64 -lSystem --icf=all -o %t/main %t/main.o %t/f2.o
   7 # RUN: llvm-objdump -d --syms --print-imm-hex %t/main | FileCheck %s
   8
   9 # CHECK-LABEL: SYMBOL TABLE:
  10 # CHECK: [[#%x,F1_REF:]]                 g     F __TEXT,__text _f1
  11 # CHECK: [[#%x,F1_REF:]]                 g     F __TEXT,__text _f2
  12
  13 # CHECK-LABEL: Disassembly of section __TEXT,__text:
  14 # CHECK:        <_main>:
  15 # CHECK: bl 0x[[#%x,F1_REF:]]
  16 # CHECK: bl 0x[[#%x,F1_REF:]]
  17
  18 #--- main.s
  19
  20 .subsections_via_symbols
  21
  22 .literal16
  23 .p2align 3
  24 L_align16:
  25 .quad 0xffffffffffffffff
  26 .short 0xaaaa
  27 .short 0xaaaa
  28 .space 4, 0xaa
  29
  30 .literal8
  31 .p2align 3
  32 L_align8:
  33 .quad 0xeeeeeeeeeeeeeeee
  34
  35 .literal4
  36 .p2align 2
  37 L_align4:
  38 .short 0xbbbb
  39 .short 0xbbbb
  40
  41
  42 .text
  43 .p2align 2
  44
  45 .globl _main, _f1, _f2
  46
  47 ## Test that loading from __literalN sections at non-literal boundaries
  48 ## doesn't confuse ICF. This function should be folded with the identical
  49 ## _f2 in f2 (which uses literals of the same value in a different isec).
  50 _f1:
  51   adrp x9, L_align16@PAGE + 4
  52   add x9, x9, L_align16@PAGEOFF + 4
  53   ldr x10, [x9]
  54
  55   adrp x9, L_align8@PAGE + 4
  56   add x9, x9, L_align8@PAGEOFF + 4
  57   ldr w11, [x9]
  58
  59   adrp x9, L_align4@PAGE + 2
  60   add x9, x9, L_align4@PAGEOFF + 2
  61   ldrh w12, [x9]
  62
  63   ret
  64
  65 _main:
  66   bl _f1
  67   bl _f2
  68
  69 #--- f2.s
  70
  71 .subsections_via_symbols
  72
  73 .literal16
  74 .p2align 3
  75 L_align16:
  76 .quad 0xffffffffffffffff
  77 .short 0xaaaa
  78 .short 0xaaaa
  79 .space 4, 170
  80
  81 .literal8
  82 .p2align 3
  83 L_align8:
  84 .quad 0xeeeeeeeeeeeeeeee
  85
  86 .literal4
  87 .p2align 2
  88 L_align4:
  89 .short 0xbbbb
  90 .short 0xbbbb
  91
  92 .text
  93 .p2align 2
  94
  95 .globl _f2
  96 _f2:
  97   adrp x9, L_align16@PAGE + 4
  98   add x9, x9, L_align16@PAGEOFF + 4
  99   ldr x10, [x9]
 100
 101   adrp x9, L_align8@PAGE + 4
 102   add x9, x9, L_align8@PAGEOFF + 4
 103   ldr w11, [x9]
 104
 105   adrp x9, L_align4@PAGE + 2
 106   add x9, x9, L_align4@PAGEOFF + 2
 107   ldrh w12, [x9]
 108
 109   ret