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llvm-project/lld/test/core/custom-section-coalesce.objtxt

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Preserve custom section names when coalescing. The mergeByContent attribute on DefinedAtoms triggers the symbol table to coalesce atoms with the exact same content. The problem is that atoms can also have a required custom section. The coalescing should never change the custom section of an atom. The fix is to only consider to atoms to have the same content if their sectionChoice() and customSectionName() attributes match. llvm-svn: 218893
2014-10-03 01:22:05 +08:00
# RUN: lld -core %s | FileCheck %s
#
# Test that custom sections are preserved when duplicate merge-by-content
# constants are coalesced.
#
---
defined-atoms:
- ref-name: L1
type: constant
merge: by-content
content: [ 01, 02, 03, 04 ]
section-choice: custom-required
section-name: .mysection
- ref-name: L2
type: constant
merge: by-content
content: [ 05, 06, 07, 08 ]
section-choice: custom-required
section-name: .mysection
- ref-name: L3
type: constant
merge: by-content
content: [ 01, 02, 03, 04 ]
---
defined-atoms:
- ref-name: L1
type: constant
merge: by-content
content: [ 01, 02, 03, 04 ]
section-choice: custom-required
section-name: .mysection
- ref-name: L2
type: constant
merge: by-content
content: [ 01, 02, 03, 04 ]
section-choice: custom-required
section-name: .mysection2
---
defined-atoms:
- ref-name: L1
type: constant
merge: by-content
content: [ 05, 06, 07, 08 ]
section-choice: custom-required
section-name: .mysection
- ref-name: L2
type: constant
merge: by-content
content: [ 01, 02, 03, 04 ]
...
# CHECK:defined-atoms:
# CHECK: - type: constant
# CHECK: content: [ 01, 02, 03, 04 ]
# CHECK: merge: by-content
# CHECK: section-choice: custom-required
# CHECK: section-name: .mysection
# CHECK: - type: constant
# CHECK: content: [ 05, 06, 07, 08 ]
# CHECK: merge: by-content
# CHECK: section-choice: custom-required
# CHECK: section-name: .mysection
# CHECK: - type: constant
# CHECK: content: [ 01, 02, 03, 04 ]
# CHECK: merge: by-content
# CHECK: - type: constant
# CHECK: content: [ 01, 02, 03, 04 ]
# CHECK: merge: by-content
# CHECK: section-choice: custom-required
# CHECK: section-name: .mysection2