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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
Rename ld.lld2 to ld.lld since it is the default. llvm-svn: 253437
2015-11-18 14:11:01 +08:00
# RUN: not ld.lld %t1 %t2 -o %t3
Add -no-allow-multiple-definition, -no-pic-executable and -no-warn-common. GNU gold has these options. Differential Revision: https://reviews.llvm.org/D42929 llvm-svn: 324300
2018-02-06 08:45:15 +08:00
# RUN: not ld.lld --allow-multiple-definition --no-allow-multiple-definition %t1 %t2 -o %t3
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
# RUN: llvm-objdump -d %t4 | FileCheck -check-prefix=REVERT %s
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
# 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
# inputs contain different constants for instuction movl.
# 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.
# CHECK: _bar:
lld: Default image base address to 0x200000 on x86-64 Align to the large page size (known as a superpage or huge page). FreeBSD automatically promotes large, superpage-aligned allocations. Differential Revision: https://reviews.llvm.org/D27042 llvm-svn: 287782
2016-11-24 01:44:02 +08:00
# CHECK-NEXT: 201000: b8 01 00 00 00 movl $1, %eax
Implement --allow-multiple-definition. Patch by George Rimar! llvm-svn: 248733
2015-09-29 04:30:11 +08:00
# REVERT: _bar:
lld: Default image base address to 0x200000 on x86-64 Align to the large page size (known as a superpage or huge page). FreeBSD automatically promotes large, superpage-aligned allocations. Differential Revision: https://reviews.llvm.org/D27042 llvm-svn: 287782
2016-11-24 01:44:02 +08:00
# REVERT-NEXT: 201000: b8 02 00 00 00 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: