lld/test/ELF/linkerscript/provide-empty-section.s

   1 # REQUIRES: x86
   2
   3 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %tundefined.o
   4 # RUN: echo "foo=42" | llvm-mc -filetype=obj -triple=x86_64-unknown-linux - -o %tdefined.o
   5 # RUN: echo "call foo" | llvm-mc -filetype=obj -triple=x86_64-unknown-linux - -o %treference.o
   6
   7 # RUN: echo "SECTIONS { .bar : { PROVIDE(foo = .); } }" > %t.script
   8
   9 # Case 1: Provided symbol is undefined and not referenced - empty section should be removed.
  10 # RUN: ld.lld %tundefined.o -T %t.script -o %t1.elf
  11 # RUN: llvm-readobj --sections %t1.elf | FileCheck %s --check-prefix=NOSECTION
  12
  13 # Case 2: Provided symbol is undefined and referenced - empty section should not be removed.
  14 # RUN: ld.lld %tundefined.o %treference.o -T %t.script -o %t2.elf
  15 # RUN: llvm-readobj --sections %t2.elf | FileCheck %s --check-prefix=SECTION
  16
  17 # Case 3: Provided symbol is defined and not referenced - empty section should be removed.
  18 # RUN: ld.lld %tdefined.o -T %t.script -o %t3.elf
  19 # RUN: llvm-readobj --sections %t3.elf | FileCheck %s --check-prefix=NOSECTION
  20
  21 # Case 4: Provided symbol is defined and referenced - empty section should not be removed.
  22 # RUN: ld.lld %tdefined.o %treference.o -T %t.script -o %t4.elf
  23 # RUN: llvm-readobj --sections %t4.elf | FileCheck %s --check-prefix=SECTION
  24
  25 .global _start
  26 _start:
  27     ret
  28
  29 # SECTION: .bar
  30 # NOSECTION-NOT: .bar