lld/test/ELF/systemz-gotent-relax.s

   1 # REQUIRES: systemz
   2 ## Test R_390_GOTENT optimization.
   3
   4 # RUN: llvm-mc -filetype=obj -triple=s390x-unknown-linux %s -o %t.o
   5 # RUN: ld.lld %t.o -o %t1 --no-apply-dynamic-relocs
   6 # RUN: llvm-readelf -S -r -x .got.plt %t1 | FileCheck --check-prefixes=CHECK,NOAPPLY %s
   7 # RUN: ld.lld %t.o -o %t1 --apply-dynamic-relocs
   8 # RUN: llvm-readelf -S -r -x .got.plt %t1 | FileCheck --check-prefixes=CHECK,APPLY %s
   9 # RUN: ld.lld %t.o -o %t1
  10 # RUN: llvm-objdump --no-print-imm-hex -d %t1 | FileCheck --check-prefix=DISASM %s
  11
  12 ## --no-relax disables GOT optimization.
  13 # RUN: ld.lld --no-relax %t.o -o %t2
  14 # RUN: llvm-objdump --no-print-imm-hex -d %t2 | FileCheck --check-prefix=NORELAX %s
  15
  16 ## In our implementation, .got is retained even if all GOT-generating relocations are optimized.
  17 # CHECK:      Name              Type            Address          Off    Size   ES Flg Lk Inf Al
  18 # CHECK:      .iplt             PROGBITS        0000000001001240 000240 000020 00  AX  0   0 16
  19 # CHECK-NEXT: .got              PROGBITS        0000000001002260 000260 000018 00  WA  0   0  8
  20 # CHECK-NEXT: .relro_padding    NOBITS          0000000001002278 000278 000d88 00  WA  0   0  1
  21 # CHECK-NEXT: .got.plt          PROGBITS        0000000001003278 000278 000008 00  WA  0   0  8
  22
  23 ## There is one R_S390_IRELATIVE relocation.
  24 # CHECK-LABEL: Relocation section '.rela.dyn' at offset {{.*}} contains 1 entries:
  25 # CHECK:       0000000001003278  000000000000003d R_390_IRELATIVE                   10011e8
  26
  27 # CHECK-LABEL: Hex dump of section '.got.plt':
  28 # NOAPPLY-NEXT:  0x01003278 00000000 00000000
  29 # APPLY-NEXT:    0x01003278 00000000 010011e8
  30
  31 # DISASM:      Disassembly of section .text:
  32 # DISASM: 00000000010011e0 <foo>:
  33 # DISASM-NEXT:   nop 0
  34 # DISASM: 00000000010011e4 <hid>:
  35 # DISASM-NEXT:   nop 0
  36 # DISASM: 00000000010011e8 <ifunc>:
  37 # DISASM-NEXT:   br      %r14
  38 # DISASM: 00000000010011ea <_start>:
  39 # DISASM-NEXT:   larl    %r1, 0x10011e0
  40 # DISASM-NEXT:   larl    %r1, 0x10011e0
  41 # DISASM-NEXT:   larl    %r1, 0x10011e4
  42 # DISASM-NEXT:   larl    %r1, 0x10011e4
  43 # DISASM-NEXT:   lgrl    %r1, 0x1003278
  44 # DISASM-NEXT:   lgrl    %r1, 0x1003278
  45 # DISASM-NEXT:   larl    %r1, 0x10011e0
  46 # DISASM-NEXT:   larl    %r1, 0x10011e0
  47 # DISASM-NEXT:   larl    %r1, 0x10011e4
  48 # DISASM-NEXT:   larl    %r1, 0x10011e4
  49 # DISASM-NEXT:   lgrl    %r1, 0x1003278
  50 # DISASM-NEXT:   lgrl    %r1, 0x1003278
  51
  52 # NORELAX-LABEL: <_start>:
  53 # NORELAX-COUNT-12: lgrl
  54
  55 .text
  56 .globl foo
  57
  58 .text
  59 .globl foo
  60 .type foo, @function
  61 foo:
  62  nop
  63
  64 .globl hid
  65 .hidden hid
  66 .type hid, @function
  67 hid:
  68  nop
  69
  70 .text
  71 .type ifunc STT_GNU_IFUNC
  72 .globl ifunc
  73 .type ifunc, @function
  74 ifunc:
  75  br %r14
  76
  77 .globl _start
  78 .type _start, @function
  79 _start:
  80  lgrl %r1, foo@GOT
  81  lgrl %r1, foo@GOT
  82  lgrl %r1, hid@GOT
  83  lgrl %r1, hid@GOT
  84  lgrl %r1, ifunc@GOT
  85  lgrl %r1, ifunc@GOT
  86  lgrl %r1, foo@GOT
  87  lgrl %r1, foo@GOT
  88  lgrl %r1, hid@GOT
  89  lgrl %r1, hid@GOT
  90  lgrl %r1, ifunc@GOT
  91  lgrl %r1, ifunc@GOT