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llvm-project/lld/test/ELF/allow-multiple-definition.s

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Implement --allow-multiple-definition. Patch by George Rimar! llvm-svn: 248733
2015-09-29 04:30:11 +08:00
# REQUIRES: x86
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o %t1
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %p/Inputs/allow-multiple-definition.s -o %t2
[ELF][test] Change -o %t to -o /dev/null if the output is not needed
2020-02-13 13:48:45 +08:00
# RUN: not ld.lld %t1 %t2 -o /dev/null
# RUN: not ld.lld --allow-multiple-definition --no-allow-multiple-definition %t1 %t2 -o /dev/null
allow-multiple-definitions should completely suppress errors instead of making them warnings. We found that when you pass --allow-multiple-definitions or `-z muldefs` to GNU linkers, they don't complain about duplicate symbols at all. They don't even print out warnings on it. We emit warnings in that case. If you pass --fatal-warnings, that difference results in a link failure. Differential Revision: https://reviews.llvm.org/D44549 llvm-svn: 327920
2018-03-20 07:04:04 +08:00
# RUN: ld.lld --allow-multiple-definition --fatal-warnings %t1 %t2 -o %t3
# RUN: ld.lld --allow-multiple-definition --fatal-warnings %t2 %t1 -o %t4
Implement --allow-multiple-definition. Patch by George Rimar! llvm-svn: 248733
2015-09-29 04:30:11 +08:00
# RUN: llvm-objdump -d %t3 | FileCheck %s
[test] lld/test/: change llvm-objdump single-dash long options to double-dash options
2020-03-16 08:47:44 +08:00
# RUN: llvm-objdump -d %t4 | FileCheck --check-prefix=REVERT %s
Implement --allow-multiple-definition. Patch by George Rimar! llvm-svn: 248733
2015-09-29 04:30:11 +08:00
allow-multiple-definitions should completely suppress errors instead of making them warnings. We found that when you pass --allow-multiple-definitions or `-z muldefs` to GNU linkers, they don't complain about duplicate symbols at all. They don't even print out warnings on it. We emit warnings in that case. If you pass --fatal-warnings, that difference results in a link failure. Differential Revision: https://reviews.llvm.org/D44549 llvm-svn: 327920
2018-03-20 07:04:04 +08:00
# RUN: ld.lld -z muldefs --fatal-warnings %t1 %t2 -o %t3
# RUN: ld.lld -z muldefs --fatal-warnings %t2 %t1 -o %t4
Add `-z muldefs` option. llvm-svn: 310757
2017-08-12 04:49:48 +08:00
# RUN: llvm-objdump -d %t3 | FileCheck %s
[test] lld/test/: change llvm-objdump single-dash long options to double-dash options
2020-03-16 08:47:44 +08:00
# RUN: llvm-objdump -d %t4 | FileCheck --check-prefix=REVERT %s
Add `-z muldefs` option. llvm-svn: 310757
2017-08-12 04:49:48 +08:00
[lld] NFC: fix trivial typos in comments Differential Revision: https://reviews.llvm.org/D72339
2020-04-02 00:21:08 +08:00
# inputs contain different constants for instruction movl.
Implement --allow-multiple-definition. Patch by George Rimar! llvm-svn: 248733
2015-09-29 04:30:11 +08:00
# Tests below checks that order of files in command line
# affects on what symbol will be used.
# If flag allow-multiple-definition is enabled the first
# meet symbol should be used.
[llvm-objdump] -d: print `00000000 <foo>:` instead of `00000000 foo:` The new behavior matches GNU objdump. A pair of angle brackets makes tests slightly easier. `.foo:` is not unique and thus cannot be used in a `CHECK-LABEL:` directive. Without `-LABEL`, the CHECK line can match the `Disassembly of section` line and causes the next `CHECK-NEXT:` to fail. ``` Disassembly of section .foo: 0000000000001634 .foo: ``` Bdragon: <> has metalinguistic connotation. it just "feels right" Reviewed By: rupprecht Differential Revision: https://reviews.llvm.org/D75713
2020-03-06 06:18:38 +08:00
# CHECK: <_bar>:
[ELF][test] Simplify and reorganize tests Add file-level comments Delete insignificant addresses to make them more tolerant to layout changes Simplify test output Delete simple Inputs/*.s files Delete version-script-copy-rel.s - covered by verdef-defaultver.s Delete version-wildcard.test - covered by version-script-glob.s llvm-svn: 371213
2019-09-06 23:10:31 +08:00
# CHECK-NEXT: movl $1, %eax
Implement --allow-multiple-definition. Patch by George Rimar! llvm-svn: 248733
2015-09-29 04:30:11 +08:00
[llvm-objdump] -d: print `00000000 <foo>:` instead of `00000000 foo:` The new behavior matches GNU objdump. A pair of angle brackets makes tests slightly easier. `.foo:` is not unique and thus cannot be used in a `CHECK-LABEL:` directive. Without `-LABEL`, the CHECK line can match the `Disassembly of section` line and causes the next `CHECK-NEXT:` to fail. ``` Disassembly of section .foo: 0000000000001634 .foo: ``` Bdragon: <> has metalinguistic connotation. it just "feels right" Reviewed By: rupprecht Differential Revision: https://reviews.llvm.org/D75713
2020-03-06 06:18:38 +08:00
# REVERT: <_bar>:
[ELF][test] Simplify and reorganize tests Add file-level comments Delete insignificant addresses to make them more tolerant to layout changes Simplify test output Delete simple Inputs/*.s files Delete version-script-copy-rel.s - covered by verdef-defaultver.s Delete version-wildcard.test - covered by version-script-glob.s llvm-svn: 371213
2019-09-06 23:10:31 +08:00
# REVERT-NEXT: movl $2, %eax
Implement --allow-multiple-definition. Patch by George Rimar! llvm-svn: 248733
2015-09-29 04:30:11 +08:00
.globl _bar
.type _bar, @function
_bar:
mov $1, %eax
.globl _start
_start: