llvm/test/MC/ELF/empty.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

87 lines
2.7 KiB
ArmAsm

// RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - | llvm-readobj -s | FileCheck %s
// RUN: llvm-mc -filetype=obj -triple x86_64-apple-darwin14.0.0-elf %s -o - | llvm-readobj -s | FileCheck %s -check-prefix=DARWIN
// RUN: llvm-mc -filetype=obj -triple x86_64-pc-win32-elf %s -o - | llvm-readobj -s | FileCheck %s -check-prefix=WINDOWS
// Check that we can create ELF files for darwin/windows, even though
// it is not the default file format.
// DARWIN: Format: ELF64-x86-64
// WINDOWS: Format: ELF64-x86-64
// DARWIN-NEXT: Arch: x86_64
// WINDOWS-NEXT: Arch: x86_64
// Test that like gnu as we create text, data and bss by default. Also test
// that symtab and strtab are listed.
// CHECK: Section {
// CHECK: Name: .strtab
// CHECK-NEXT: Type: SHT_STRTAB
// CHECK-NEXT: Flags [
// CHECK-NEXT: ]
// CHECK-NEXT: Address: 0x0
// CHECK-NEXT: Offset:
// CHECK-NEXT: Size: 34
// CHECK-NEXT: Link: 0
// CHECK-NEXT: Info: 0
// CHECK-NEXT: AddressAlignment: 1
// CHECK-NEXT: EntrySize: 0
// CHECK-NEXT: }
// CHECK: Section {
// CHECK: Name: .text
// CHECK-NEXT: Type: SHT_PROGBITS
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: SHF_EXECINSTR
// CHECK-NEXT: ]
// CHECK-NEXT: Address: 0x0
// CHECK-NEXT: Offset: 0x40
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Link: 0
// CHECK-NEXT: Info: 0
// CHECK-NEXT: AddressAlignment: 4
// CHECK-NEXT: EntrySize: 0
// CHECK-NEXT: }
// CHECK: Section {
// CHECK: Name: .data
// CHECK-NEXT: Type: SHT_PROGBITS
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: SHF_WRITE
// CHECK-NEXT: ]
// CHECK-NEXT: Address: 0x0
// CHECK-NEXT: Offset: 0x40
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Link: 0
// CHECK-NEXT: Info: 0
// CHECK-NEXT: AddressAlignment: 4
// CHECK-NEXT: EntrySize: 0
// CHECK-NEXT: }
// CHECK: Section {
// CHECK: Name: .bss
// CHECK-NEXT: Type: SHT_NOBITS
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: SHF_WRITE
// CHECK-NEXT: ]
// CHECK-NEXT: Address: 0x0
// CHECK-NEXT: Offset: 0x40
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Link: 0
// CHECK-NEXT: Info: 0
// CHECK-NEXT: AddressAlignment: 4
// CHECK-NEXT: EntrySize: 0
// CHECK-NEXT: }
// CHECK: Section {
// CHECK: Name: .symtab
// CHECK-NEXT: Type: SHT_SYMTAB
// CHECK-NEXT: Flags [
// CHECK-NEXT: ]
// CHECK-NEXT: Address: 0x0
// CHECK-NEXT: Offset:
// CHECK-NEXT: Size: 24
// CHECK-NEXT: Link:
// CHECK-NEXT: Info: 1
// CHECK-NEXT: AddressAlignment: 8
// CHECK-NEXT: EntrySize: 24
// CHECK-NEXT: }