bolt/test/AArch64/reloc-call26.s

   1 ## This test checks processing of R_AARCH64_CALL26 relocation
   2 ## when option `--funcs` is enabled
   3
   4 ## We want to test on relocations against functions with both higher
   5 ## and lower addresses. The '--force-patch' option is used to prevent
   6 ## the functions func1 and func2 from being optimized, so that their
   7 ## addresses can remain unchanged. Therefore, the relocations can be
   8 ## updated via encodeValueAArch64 and the address order in the output
   9 ## binary is func1 < _start < func2.
  10
  11 # REQUIRES: system-linux
  12
  13 # RUN: llvm-mc -filetype=obj -triple aarch64-unknown-unknown \
  14 # RUN:   %s -o %t.o
  15 # RUN: %clang %cflags %t.o -o %t.exe -Wl,-q
  16 # RUN: llvm-bolt %t.exe -o %t.bolt --funcs=func1,func2 \
  17 # RUN:   --force-patch 2>&1 | FileCheck %s -check-prefix=CHECK-BOLT
  18 # RUN: llvm-objdump -d --disassemble-symbols='_start' %t.bolt | \
  19 # RUN:   FileCheck %s
  20 # RUN: llvm-nm --numeric-sort --extern-only %t.bolt  | FileCheck \
  21 # RUN:   %s -check-prefix=CHECK-FUNC-ORDER
  22
  23 # CHECK-BOLT: BOLT-WARNING: failed to patch entries in func1. The function will not be optimized.
  24 # CHECK-BOLT: BOLT-WARNING: failed to patch entries in func2. The function will not be optimized.
  25 # CHECK: {{.*}} bl {{.*}} <func1>
  26 # CHECK: {{.*}} bl {{.*}} <func2>
  27
  28 # CHECK-FUNC-ORDER: {{.*}} func1
  29 # CHECK-FUNC-ORDER-NEXT: {{.*}} _start
  30 # CHECK-FUNC-ORDER-NEXT: {{.*}} func2
  31
  32   .text
  33   .align 4
  34   .global func1
  35   .type func1, %function
  36 func1:
  37   ret
  38   .size func1, .-func1
  39   .global _start
  40   .type _start, %function
  41 _start:
  42   bl func1
  43   bl func2
  44   mov     w8, #93
  45   svc     #0
  46   .size _start, .-_start
  47   .global func2
  48   .type func2, %function
  49 func2:
  50   ret
  51   .size func2, .-func2