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llvm-mirror/test/MC/ELF/comdat.s
Rafael Espindola e4278af625 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.

llvm-svn: 239045
2015-06-04 15:33:30 +00:00

101 lines
2.7 KiB
ArmAsm

// RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - | llvm-readobj -s -t -sd | FileCheck %s
// Test that we produce the group sections and that they are before the members
// CHECK: Section {
// CHECK: Index: 5
// CHECK-NEXT: Name: .group
// CHECK-NEXT: Type: SHT_GROUP
// CHECK-NEXT: Flags [
// CHECK-NEXT: ]
// CHECK-NEXT: Address: 0x0
// CHECK-NEXT: Offset:
// CHECK-NEXT: Size: 12
// CHECK-NEXT: Link:
// CHECK-NEXT: Info: 1
// CHECK-NEXT: AddressAlignment: 4
// CHECK-NEXT: EntrySize: 4
// CHECK-NEXT: SectionData (
// CHECK-NEXT: 0000: 01000000 06000000 07000000
// CHECK-NEXT: )
// CHECK-NEXT: }
// CHECK: Section {
// CHECK: Index: 8
// CHECK-NEXT: Name: .group
// CHECK-NEXT: Type: SHT_GROUP
// CHECK-NEXT: Flags [
// CHECK-NEXT: ]
// CHECK-NEXT: Address: 0x0
// CHECK-NEXT: Offset:
// CHECK-NEXT: Size: 8
// CHECK-NEXT: Link:
// CHECK-NEXT: Info: 2
// CHECK-NEXT: AddressAlignment: 4
// CHECK-NEXT: EntrySize: 4
// CHECK-NEXT: SectionData (
// CHECK-NEXT: 0000: 01000000 09000000
// CHECK-NEXT: )
// CHECK-NEXT: }
// CHECK: Section {
// CHECK: Index: 10
// CHECK-NEXT: Name: .group
// CHECK-NEXT: Type: SHT_GROUP
// CHECK-NEXT: Flags [
// CHECK-NEXT: ]
// CHECK-NEXT: Address: 0x0
// CHECK-NEXT: Offset:
// CHECK-NEXT: Size: 12
// CHECK-NEXT: Link:
// CHECK-NEXT: Info: 3
// CHECK-NEXT: AddressAlignment: 4
// CHECK-NEXT: EntrySize: 4
// CHECK-NEXT: SectionData (
// CHECK-NEXT: 0000: 01000000 0B000000 0C000000
// CHECK-NEXT: )
// 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
// 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 (0x8)
// 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