llvm-6502/test/MC/ELF/comdat.s
Hans Wennborg a8febf2283 ELFObjectWriter: deduplicate suffices in strtab
We already do this for shstrtab, so might as well do it for strtab. This
extracts the string table building code into a separate class. The idea
is to use it for other object formats too.

I mostly wanted to do this for the general principle, but it does save a
little bit on object file size. I tried this on a clang bootstrap and
saved 0.54% on the sum of object file sizes (1.14 MB out of 212 MB for
a release build).

Differential Revision: http://reviews.llvm.org/D3533

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207670 91177308-0d34-0410-b5e6-96231b3b80d8
2014-04-30 16:25:02 +00:00

93 lines
2.5 KiB
ArmAsm

// RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - | llvm-readobj -s -t | FileCheck %s
// Test that we produce the group sections and that they are a the beginning
// of the file.
// CHECK: Section {
// CHECK: Index: 1
// CHECK-NEXT: Name: .group
// CHECK-NEXT: Type: SHT_GROUP
// CHECK-NEXT: Flags [
// CHECK-NEXT: ]
// CHECK-NEXT: Address: 0x0
// CHECK-NEXT: Offset: 0x40
// CHECK-NEXT: Size: 12
// CHECK-NEXT: Link: 13
// CHECK-NEXT: Info: 1
// CHECK-NEXT: AddressAlignment: 4
// CHECK-NEXT: EntrySize: 4
// CHECK-NEXT: }
// CHECK-NEXT: Section {
// CHECK-NEXT: Index: 2
// CHECK-NEXT: Name: .group
// CHECK-NEXT: Type: SHT_GROUP
// CHECK-NEXT: Flags [
// CHECK-NEXT: ]
// CHECK-NEXT: Address: 0x0
// CHECK-NEXT: Offset: 0x4C
// CHECK-NEXT: Size: 8
// CHECK-NEXT: Link: 13
// CHECK-NEXT: Info: 2
// CHECK-NEXT: AddressAlignment: 4
// CHECK-NEXT: EntrySize: 4
// CHECK-NEXT: }
// CHECK-NEXT: Section {
// CHECK-NEXT: Index: 3
// CHECK-NEXT: Name: .group
// CHECK-NEXT: Type: SHT_GROUP
// CHECK-NEXT: Flags [
// CHECK-NEXT: ]
// CHECK-NEXT: Address: 0x0
// CHECK-NEXT: Offset: 0x54
// CHECK-NEXT: Size: 12
// CHECK-NEXT: Link: 13
// CHECK-NEXT: Info: 13
// CHECK-NEXT: AddressAlignment: 4
// CHECK-NEXT: EntrySize: 4
// CHECK-NEXT: }
// Test that g1 and g2 are local, but g3 is an undefined global.
// CHECK: Symbol {
// CHECK: Name: g1
// CHECK-NEXT: Value: 0x0
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Binding: Local
// CHECK-NEXT: Type: None
// CHECK-NEXT: Other: 0
// CHECK-NEXT: Section: .foo (0x7)
// CHECK-NEXT: }
// CHECK-NEXT: Symbol {
// CHECK-NEXT: Name: g2
// CHECK-NEXT: Value: 0x0
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Binding: Local
// CHECK-NEXT: Type: None
// CHECK-NEXT: Other: 0
// CHECK-NEXT: Section: .group (0x2)
// CHECK-NEXT: }
// CHECK: Symbol {
// CHECK: Name: g3
// CHECK-NEXT: Value: 0x0
// CHECK-NEXT: Size: 0
// CHECK-NEXT: Binding: Global
// CHECK-NEXT: Type: None
// CHECK-NEXT: Other: 0
// CHECK-NEXT: Section: Undefined (0x0)
// CHECK-NEXT: }
.section .foo,"axG",@progbits,g1,comdat
g1:
nop
.section .bar,"ax?",@progbits
nop
.section .zed,"axG",@progbits,g2,comdat
nop
.section .baz,"axG",@progbits,g3,comdat
.long g3