llvm/test/MC/ELF/basic-elf-64.s
Rafael Espindola 9f299abc05 Omit unused section symbols from the symbol table.
Section symbols exist as an optimization: instead of having multiple relocations
point to different symbols, many of them can point to a single section symbol.

When that optimization is unused, a section symbol is also unused and adds no
extra information to the object file.

This saves a bit of space on the object files and makes the output of
llvm-objdump -t easier to read and consequently some tests get quite a bit
simpler.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239045 91177308-0d34-0410-b5e6-96231b3b80d8
2015-06-04 15:33:30 +00:00

71 lines
1.5 KiB
ArmAsm

// RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - | llvm-readobj -h -s -r -t | FileCheck %s
.text
.globl main
.align 16, 0x90
.type main,@function
main: # @main
# BB#0:
subq $8, %rsp
movl $.L.str1, %edi
callq puts
movl $.L.str2, %edi
callq puts
xorl %eax, %eax
addq $8, %rsp
ret
.Ltmp0:
.size main, .Ltmp0-main
.type .L.str1,@object # @.str1
.section .rodata.str1.1,"aMS",@progbits,1
.L.str1:
.asciz "Hello"
.size .L.str1, 6
.type .L.str2,@object # @.str2
.L.str2:
.asciz "World!"
.size .L.str2, 7
.section .note.GNU-stack,"",@progbits
// CHECK: ElfHeader {
// CHECK: Class: 64-bit
// CHECK: DataEncoding: LittleEndian
// CHECK: FileVersion: 1
// CHECK: }
// CHECK: Sections [
// CHECK: Section {
// CHECK: Index: 0
// CHECK: Name: (0)
// CHECK: Name: .text
// CHECK: Name: .rela.text
// CHECK: Relocations [
// CHECK: Section {{.*}} .rela.text {
// CHECK: 0x5 R_X86_64_32 .rodata.str1.1 0x0
// CHECK: 0xA R_X86_64_PC32 puts 0xFFFFFFFFFFFFFFFC
// CHECK: 0xF R_X86_64_32 .rodata.str1.1 0x6
// CHECK: 0x14 R_X86_64_PC32 puts 0xFFFFFFFFFFFFFFFC
// CHECK: }
// CHECK: ]
// CHECK: Symbol {
// CHECK: Binding: Local
// CHECK: Type: Section
// CHECK: Symbol {
// CHECK: Name: main
// CHECK: Binding: Global
// CHECK: Type: Function
// CHECK: }
// CHECK: Symbol {
// CHECK: Name: puts
// CHECK: Binding: Global
// CHECK: Type: None
// CHECK: }