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llvm-project/lld/test/ELF/gc-sections-merge-addend.s

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Bring r267164 back with a fix. The fix is to handle local symbols referring to SHF_MERGE sections. Original message: GC entries of SHF_MERGE sections. It is a fairly direct extension of the gc algorithm. For merge sections instead of remembering just a live bit, we remember which offsets were used. This reduces the .rodata sections in chromium from 9648861 to 9477472 bytes. llvm-svn: 267233
2016-04-23 06:09:35 +08:00
// RUN: llvm-mc %s -o %t.o -filetype=obj -triple=x86_64-pc-linux
// RUN: ld.lld %t.o -o %t.so -shared --gc-sections
// RUN: llvm-readobj -s -section-data %t.so | FileCheck %s
// CHECK: Name: .rodata
// CHECK-NEXT: Type: SHT_PROGBITS
// CHECK-NEXT: Flags [
// CHECK-NEXT: SHF_ALLOC
// CHECK-NEXT: SHF_MERGE
// CHECK-NEXT: SHF_STRINGS
// CHECK-NEXT: ]
// CHECK-NEXT: Address:
// CHECK-NEXT: Offset:
// CHECK-NEXT: Size: 4
// CHECK-NEXT: Link: 0
// CHECK-NEXT: Info: 0
// CHECK-NEXT: AddressAlignment: 1
Stop propagating Entsize. Now that we combine multiple synthetic merge section into one output section there is no point in trying to propagate a value. llvm-svn: 294048
2017-02-04 05:29:51 +08:00
// CHECK-NEXT: EntrySize: 0
Bring r267164 back with a fix. The fix is to handle local symbols referring to SHF_MERGE sections. Original message: GC entries of SHF_MERGE sections. It is a fairly direct extension of the gc algorithm. For merge sections instead of remembering just a live bit, we remember which offsets were used. This reduces the .rodata sections in chromium from 9648861 to 9477472 bytes. llvm-svn: 267233
2016-04-23 06:09:35 +08:00
// CHECK-NEXT: SectionData (
// CHECK-NEXT: 0000: 62617200 |bar.|
// CHECK-NEXT: )
.section .data.f,"aw",@progbits
.globl f
f:
.quad .rodata.str1.1 + 4
.section .data.g,"aw",@progbits
.hidden g
.globl g
g:
.quad .rodata.str1.1
.section .rodata.str1.1,"aMS",@progbits,1
.L.str:
.asciz "foo"
.L.str.1:
.asciz "bar"