bolt/test/AArch64/veneer-lld-abs.s

   1 ## Check that llvm-bolt correctly recognizes long absolute thunks generated
   2 ## by LLD.
   3
   4 # RUN: llvm-mc -filetype=obj -triple aarch64-unknown-unknown %s -o %t.o
   5 # RUN: %clang %cflags -fno-PIC -no-pie %t.o -o %t.exe -nostdlib \
   6 # RUN:    -fuse-ld=lld -Wl,-q
   7 # RUN: llvm-objdump -d %t.exe | FileCheck --check-prefix=CHECK-INPUT %s
   8 # RUN: llvm-objcopy --remove-section .rela.mytext %t.exe
   9 # RUN: llvm-bolt %t.exe -o %t.bolt --elim-link-veneers=true --lite=0
  10 # RUN: llvm-objdump -d -j .text  %t.bolt | \
  11 # RUN:   FileCheck --check-prefix=CHECK-OUTPUT %s
  12
  13 .text
  14 .balign 4
  15 .global foo
  16 .type foo, %function
  17 foo:
  18   adrp x1, foo
  19   ret
  20 .size foo, .-foo
  21
  22 .section ".mytext", "ax"
  23 .balign 4
  24
  25 .global __AArch64AbsLongThunk_foo
  26 .type __AArch64AbsLongThunk_foo, %function
  27 __AArch64AbsLongThunk_foo:
  28   ldr x16, .L1
  29   br x16
  30 # CHECK-INPUT-LABEL: <__AArch64AbsLongThunk_foo>:
  31 # CHECK-INPUT-NEXT:    ldr
  32 # CHECK-INPUT-NEXT:    br
  33 .L1:
  34   .quad foo
  35 .size __AArch64AbsLongThunk_foo, .-__AArch64AbsLongThunk_foo
  36
  37 ## Check that the thunk was removed from .text and _start() calls foo()
  38 ## directly.
  39
  40 # CHECK-OUTPUT-NOT: __AArch64AbsLongThunk_foo
  41
  42 .global _start
  43 .type _start, %function
  44 _start:
  45 # CHECK-INPUT-LABEL:  <_start>:
  46 # CHECK-OUTPUT-LABEL: <_start>:
  47   bl __AArch64AbsLongThunk_foo
  48 # CHECK-INPUT-NEXT:     bl {{.*}} <__AArch64AbsLongThunk_foo>
  49 # CHECK-OUTPUT-NEXT:    bl {{.*}} <foo>
  50   ret
  51 .size _start, .-_start