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llvm-project/lld/test/COFF/order.test

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Add the /order option. With the /order option, you can give an order file. An order file contains symbol names, one per line, and the linker places comdat sections in that given order. The option is used often to optimize an output binary for (in particular, startup) speed by improving locality. Differential Revision: https://reviews.llvm.org/D42598 llvm-svn: 323579
2018-01-27 08:34:46 +08:00
# RUN: yaml2obj < %s > %t1.obj
# RUN: yaml2obj < %p/Inputs/order.yaml > %t2.obj
# RUN: echo fn1 > %t.order
# RUN: echo fn2 >> %t.order
# RUN: echo fn3 >> %t.order
# RUN: echo fn4 >> %t.order
# RUN: lld-link -entry:fn1 -subsystem:console -opt:noref -debug %t1.obj %t2.obj \
# RUN: -lldmap:- -out:%t.exe -order:@%t.order | FileCheck %s
# CHECK: fn1
# CHECK: fn2
# CHECK: fn3
# CHECK: fn4
# CHECK: unrelated1
# CHECK: unrelated2
# RUN: lld-link -entry:fn1 -subsystem:console -opt:noref -debug %t1.obj %t2.obj \
[lld-link] Add support for /ignore:4037. Fixes PR36657. https://reviews.llvm.org/D44286 llvm-svn: 327124
2018-03-09 20:41:04 +08:00
# RUN: -lldmap:- -ignore:4037 -out:%t.exe | FileCheck -check-prefix=DEFAULT %s
Add the /order option. With the /order option, you can give an order file. An order file contains symbol names, one per line, and the linker places comdat sections in that given order. The option is used often to optimize an output binary for (in particular, startup) speed by improving locality. Differential Revision: https://reviews.llvm.org/D42598 llvm-svn: 323579
2018-01-27 08:34:46 +08:00
# DEFAULT: fn2
# DEFAULT: fn3
# DEFAULT: unrelated1
# DEFAULT: unrelated2
# DEFAULT: fn4
# DEFAULT: fn1
Warn on nonexistent comdat sections in an /order file. I didn't implement the feature in the original patch because I didn't come up with an idea to do that easily and efficiently. Turned out that that is actually easy to implement. In this patch, we collect comdat sections before gc is run and warn on nonexistent symbols in an order file. Differential Revision: https://reviews.llvm.org/D42658 llvm-svn: 323699
2018-01-30 05:50:53 +08:00
# RUN: echo fn1 > %t2.order
# RUN: echo fn2 >> %t2.order
# RUN: echo fn3 >> %t2.order
# RUN: echo fn4 >> %t2.order
# RUN: echo foo >> %t2.order
# RUN: lld-link -entry:fn1 -subsystem:console -debug %t1.obj %t2.obj \
# RUN: -out:%t.exe -order:@%t2.order 2>&1 | FileCheck -check-prefix=WARN %s
# WARN: warning: /order:{{.*}} missing symbol: foo
# WARN-NOT: f2
# WARN-NOT: f3
# WARN-NOT: f4
[lld-link] Add support for /ignore:4037. Fixes PR36657. https://reviews.llvm.org/D44286 llvm-svn: 327124
2018-03-09 20:41:04 +08:00
# RUN: lld-link -entry:fn1 -subsystem:console -debug %t1.obj %t2.obj \
# RUN: -out:%t.exe -order:@%t2.order -ignore:4037 2>&1 | \
# RUN: FileCheck -allow-empty -check-prefix=NOWARN %s
# NOWARN-NOT: warning: /order:{{.*}} missing symbol: foo
# NOWARN-NOT: f2
# NOWARN-NOT: f3
# NOWARN-NOT: f4
Warn on nonexistent comdat sections in an /order file. I didn't implement the feature in the original patch because I didn't come up with an idea to do that easily and efficiently. Turned out that that is actually easy to implement. In this patch, we collect comdat sections before gc is run and warn on nonexistent symbols in an order file. Differential Revision: https://reviews.llvm.org/D42658 llvm-svn: 323699
2018-01-30 05:50:53 +08:00
Add the /order option. With the /order option, you can give an order file. An order file contains symbol names, one per line, and the linker places comdat sections in that given order. The option is used often to optimize an output binary for (in particular, startup) speed by improving locality. Differential Revision: https://reviews.llvm.org/D42598 llvm-svn: 323579
2018-01-27 08:34:46 +08:00
--- !COFF
header:
Machine: IMAGE_FILE_MACHINE_AMD64
Characteristics: [ ]
sections:
- Name: .text
Characteristics: [ IMAGE_SCN_CNT_CODE, IMAGE_SCN_LNK_COMDAT, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ ]
Alignment: 16
SectionData: C3
- Name: .text
Characteristics: [ IMAGE_SCN_CNT_CODE, IMAGE_SCN_LNK_COMDAT, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ ]
Alignment: 16
SectionData: C3
- Name: .text
Characteristics: [ IMAGE_SCN_CNT_CODE, IMAGE_SCN_LNK_COMDAT, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ ]
Alignment: 16
SectionData: C3
symbols:
- Name: .text
Value: 0
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
Length: 1
NumberOfRelocations: 0
NumberOfLinenumbers: 0
CheckSum: 0
Number: 1
Selection: IMAGE_COMDAT_SELECT_NODUPLICATES
- Name: fn2
Value: 0
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_FUNCTION
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
- Name: .text
Value: 0
SectionNumber: 2
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
Length: 1
NumberOfRelocations: 0
NumberOfLinenumbers: 0
CheckSum: 0
Number: 2
Selection: IMAGE_COMDAT_SELECT_NODUPLICATES
- Name: fn3
Value: 0
SectionNumber: 2
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_FUNCTION
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
- Name: .text
Value: 0
SectionNumber: 3
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
Length: 1
NumberOfRelocations: 0
NumberOfLinenumbers: 0
CheckSum: 0
Number: 3
Selection: IMAGE_COMDAT_SELECT_NODUPLICATES
- Name: unrelated1
Value: 0
SectionNumber: 3
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_FUNCTION
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
...