RUN: yaml2obj %p/Inputs/sectionlayout.yaml -o %t.obj

## Error on non-exist input layout file
RUN: not lld-link /entry:main /sectionlayout:doesnotexist.txt %t.obj

## Order in 1 -> 3 -> 2
RUN: echo ".text1" > %t.layout.txt
RUN: echo ".text3" >> %t.layout.txt
RUN: echo ".text2" >> %t.layout.txt
RUN: lld-link /out:%t.exe /entry:main /sectionlayout:%t.layout.txt %t.obj
RUN: llvm-readobj --sections %t.exe | FileCheck -check-prefix=CHECK1 %s

## While /sectionlayout:abc is valid, /sectionlayout:@abc is also accepted (to align with MS link.exe)
RUN: lld-link /out:%t.exe /entry:main /sectionlayout:@%t.layout.txt %t.obj
RUN: llvm-readobj --sections %t.exe | FileCheck -check-prefix=CHECK1 %s

## Ensure tokens after section name is ignored (for now, to align with MS link.exe)
RUN: echo ".text1 ALIGN=1" > %t.layout.txt
RUN: echo ".text3" >> %t.layout.txt
RUN: echo ".text2" >> %t.layout.txt
RUN: lld-link /out:%t.exe /entry:main /sectionlayout:@%t.layout.txt %t.obj
RUN: llvm-readobj --sections %t.exe | FileCheck -check-prefix=CHECK1 %s

CHECK1: Sections [
CHECK1:   Section {
CHECK1:     Number: 1
CHECK1:     Name: .text1
CHECK1:   }
CHECK1:   Section {
CHECK1:     Number: 2
CHECK1:     Name: .text3
CHECK1:   }
CHECK1:   Section {
CHECK1:     Number: 3
CHECK1:     Name: .text2
CHECK1:   }
CHECK1: ]

## Order in 3 -> 2 -> 1
RUN: echo ".text3" > %t.layout.txt
RUN: echo ".text2" >> %t.layout.txt
RUN: echo ".text1" >> %t.layout.txt
RUN: lld-link /out:%t.exe /entry:main /sectionlayout:%t.layout.txt %t.obj
RUN: llvm-readobj --sections %t.exe | FileCheck -check-prefix=CHECK2 %s

CHECK2: Sections [
CHECK2:   Section {
CHECK2:     Number: 1
CHECK2:     Name: .text3
CHECK2:   }
CHECK2:   Section {
CHECK2:     Number: 2
CHECK2:     Name: .text2
CHECK2:   }
CHECK2:   Section {
CHECK2:     Number: 3
CHECK2:     Name: .text1
CHECK2:   }
CHECK2: ]

## Put non-exisist section in layout file has no effect; original order is respected
RUN: echo "notexist" > %t.layout.txt
RUN: lld-link /out:%t.exe /entry:main /sectionlayout:%t.layout.txt %t.obj
RUN: llvm-readobj --sections %t.exe | FileCheck -check-prefix=CHECK3 %s

## Empty layout file has no effect
RUN: echo "" > %t.layout.txt
RUN: lld-link /out:%t.exe /entry:main /sectionlayout:%t.layout.txt %t.obj
RUN: llvm-readobj --sections %t.exe | FileCheck -check-prefix=CHECK3 %s

## Empty layout file has no effect
RUN: echo " " > %t.layout.txt
RUN: echo " " >> %t.layout.txt
RUN: lld-link /out:%t.exe /entry:main /sectionlayout:%t.layout.txt %t.obj
RUN: llvm-readobj --sections %t.exe | FileCheck -check-prefix=CHECK3 %s

CHECK3: Sections [
CHECK3:   Section {
CHECK3:     Number: 1
CHECK3:     Name: .text1
CHECK3:   }
CHECK3:   Section {
CHECK3:     Number: 2
CHECK3:     Name: .text2
CHECK3:   }
CHECK3:   Section {
CHECK3:     Number: 3
CHECK3:     Name: .text3
CHECK3:   }
CHECK3: ]

## Order in 3 -> 1, but 2 remains unspecified
RUN: echo ".text3" > %t.layout.txt
RUN: echo ".text1" >> %t.layout.txt
RUN: lld-link /out:%t.exe /entry:main /sectionlayout:%t.layout.txt %t.obj
RUN: llvm-readobj --sections %t.exe | FileCheck -check-prefix=CHECK4 %s

CHECK4: Sections [
CHECK4:   Section {
CHECK4:     Number: 1
CHECK4:     Name: .text3
CHECK4:   }
CHECK4:   Section {
CHECK4:     Number: 2
CHECK4:     Name: .text1
CHECK4:   }
CHECK4:   Section {
CHECK4:     Number: 3
CHECK4:     Name: .text2
CHECK4:   }
CHECK4: ]

## Order in 3 -> 2, but 1 remains unspecified.
## 1 should be the first, as the original order (1 -> 2 -> 3) is respected
RUN: echo ".text3" > %t.layout.txt
RUN: echo ".text2" >> %t.layout.txt
RUN: lld-link /out:%t.exe /entry:main /sectionlayout:%t.layout.txt %t.obj
RUN: llvm-readobj --sections %t.exe | FileCheck -check-prefix=CHECK2 %s

## Order in 3 -> 2 -> 1, multiple specification has no effect (the first one is used)
RUN: echo ".text3" > %t.layout.txt
RUN: echo ".text3" >> %t.layout.txt
RUN: echo ".text3" >> %t.layout.txt
RUN: echo ".text2" >> %t.layout.txt
RUN: echo ".text2" >> %t.layout.txt
RUN: echo ".text1" >> %t.layout.txt
RUN: echo ".text3" >> %t.layout.txt
RUN: lld-link /out:%t.exe /entry:main /sectionlayout:%t.layout.txt %t.obj
RUN: llvm-readobj --sections %t.exe | FileCheck -check-prefix=CHECK2 %s