lld/test/wasm/no-strip-segment.s

   1 # RUN: split-file %s %t
   2 # RUN: llvm-mc -filetype=obj --triple=wasm32-unknown-unknown -o %t/main.o %t/main.s
   3 # RUN: llvm-mc -filetype=obj --triple=wasm32-unknown-unknown -o %t/liba_x.o %t/liba_x.s
   4 # RUN: llvm-mc -filetype=obj --triple=wasm32-unknown-unknown -o %t/liba_y.o %t/liba_y.s
   5 # RUN: rm -f %t/liba.a
   6 # RUN: llvm-ar rcs %t/liba.a %t/liba_x.o %t/liba_y.o
   7 # RUN: wasm-ld %t/main.o %t/liba.a --gc-sections -o %t/main.wasm --print-gc-sections | FileCheck %s --check-prefix=GC
   8 # RUN: obj2yaml %t/main.wasm | FileCheck %s
   9
  10 # --gc-sections should remove non-retained and unused "weathers" section from live object liba_x.o
  11 # GC: removing unused section {{.*}}/liba.a(liba_x.o):(weathers)
  12 # Should not remove retained "greetings" sections from live objects main.o and liba_x.o
  13 # GC-NOT: removing unused section %t/main.o:(greetings)
  14 # GC-NOT: removing unused section %t/liba_x.o:(greetings)
  15
  16 # Note: All symbols are private so that they don't join the symbol table.
  17
  18 #--- main.s
  19   .functype grab_liba () -> ()
  20   .globl  _start
  21 _start:
  22   .functype _start () -> ()
  23   call grab_liba
  24   end_function
  25
  26   .section greetings,"R",@
  27   .asciz  "hello"
  28   .section weathers,"R",@
  29   .asciz  "cloudy"
  30
  31 #--- liba_x.s
  32   .globl  grab_liba
  33 grab_liba:
  34   .functype grab_liba () -> ()
  35   end_function
  36
  37   .section greetings,"R",@
  38   .asciz  "world"
  39   .section weathers,"",@
  40   .asciz  "rainy"
  41
  42 #--- liba_y.s
  43   .section        greetings,"R",@
  44   .asciz  "bye"
  45
  46
  47 # "greetings" section
  48 # CHECK: - Type:            DATA
  49 # CHECK:   Segments:
  50 # CHECK:     - SectionOffset:   7
  51 # CHECK:       InitFlags:       0
  52 # CHECK:       Offset:
  53 # CHECK:         Opcode:          I32_CONST
  54 # CHECK:         Value:           1024
  55 # CHECK:       Content:         68656C6C6F00776F726C6400
  56 # "weahters" section.
  57 # CHECK: - SectionOffset:   25
  58 # CHECK:   InitFlags:       0
  59 # CHECK:   Offset:
  60 # CHECK:     Opcode:          I32_CONST
  61 # CHECK:     Value:           1036
  62 # CHECK:   Content:         636C6F75647900