llvm/test/MC/MachO/AArch64/emit-dwarf-unwind.s

   1 // RUN: rm -rf %t; mkdir %t
   2 // RUN: llvm-mc -triple x86_64-apple-macos11.0 %s -filetype=obj -o %t/x86_64.o -emit-compact-unwind-non-canonical=true
   3 // RUN: llvm-objdump --macho --dwarf=frames %t/x86_64.o | FileCheck %s --check-prefix TWO-FDES
   4 // RUN: llvm-mc -triple arm64-apple-macos11.0 %s -filetype=obj -o %t/arm64.o -emit-compact-unwind-non-canonical=true
   5 // RUN: llvm-objdump --macho --dwarf=frames %t/arm64.o | FileCheck %s --check-prefix ONE-FDE
   6 // RUN: llvm-mc -triple x86_64-apple-macos11.0 %s -filetype=obj --emit-dwarf-unwind no-compact-unwind -o %t/x86_64-no-dwarf.o -emit-compact-unwind-non-canonical=true
   7 // RUN: llvm-objdump --macho --dwarf=frames %t/x86_64-no-dwarf.o | FileCheck %s --check-prefix ONE-FDE
   8 // RUN: llvm-mc -triple arm64-apple-macos11.0 %s -filetype=obj --emit-dwarf-unwind always -o %t/arm64-dwarf.o -emit-compact-unwind-non-canonical=true
   9 // RUN: llvm-objdump --macho --dwarf=frames %t/arm64-dwarf.o | FileCheck %s --check-prefix TWO-FDES
  10
  11 // TWO-FDES: FDE
  12 // TWO-FDES: FDE
  13
  14 // ONE-FDE-NOT: FDE
  15 // ONE-FDE:     FDE
  16 // ONE-FDE-NOT: FDE
  17
  18 _main:
  19   .cfi_startproc
  20   .cfi_def_cfa_offset 16
  21   ret
  22   .cfi_endproc
  23
  24 _foo:
  25   .cfi_startproc
  26   .cfi_def_cfa_offset 16
  27   /// This encodes DW_CFA_GNU_args_size which cannot be expressed using compact
  28   /// unwind, so we must use DWARf unwind for this function.
  29   .cfi_escape 0x2e, 0x10
  30   ret
  31   .cfi_endproc
  32
  33 .subsections_via_symbols