# REQUIRES: x86
# RUN: rm -rf %t && split-file %s %t && cd %t
#--- matching.s
.section .rodata.a,"a",@progbits
.byte 1
.section .rodata.b,"a",@progbits
.byte 2
.section .rodata.c,"ax",@progbits
.byte 3
.section .rodata.d,"a",@progbits
.byte 4
.section .rodata.e,"a",@progbits
.byte 5
.section .rodata.f,"a",@progbits
.balign 2
.byte 6
.section .rodata.g,"a",@progbits
.byte 7
.section .rodata.h,"a",@progbits
.byte 8
# RUN: llvm-mc -n -filetype=obj -triple=x86_64 matching.s -o matching.o
#--- matching.lds
## CLASS definitions match sections in linker script order. The sections may be
## placed in a different order. Classes may derive from one another. Class
## references can be restricted by INPUT_SECTION_FLAGS. Classes can be referenced
## in /DISCARD/ and INSERT.
SECTIONS {
CLASS(a) { *(.rodata.a) }
CLASS(cd) { *(.rodata.c) *(.rodata.d) }
CLASS(ef) { *(SORT_BY_ALIGNMENT(.rodata.e .rodata.f)) }
CLASS(g) { *(.rodata.g) }
CLASS("h)") { *(.rodata.h) }
.rodata : {
*(.rodata.*)
INPUT_SECTION_FLAGS(SHF_EXECINSTR) CLASS( cd)
CLASS(a)CLASS(ef )
}
OVERLAY : { .rodata.d { INPUT_SECTION_FLAGS(!SHF_EXECINSTR) CLASS(cd) } }
/DISCARD/ : { CLASS(g) }
}
SECTIONS {
.rodata.h : { CLASS("h)") }
} INSERT AFTER .rodata;
# RUN: ld.lld -T matching.lds matching.o -o matching
# RUN: llvm-objdump -s matching |\
# RUN: FileCheck %s --check-prefix=MATCHING
# MATCHING: .rodata
# MATCHING-NEXT: 020301cc 0605 ......{{$}}
# MATCHING: .rodata.h
# MATCHING-NEXT: 08 .{{$}}
# MATCHING: .rodata.d
# MATCHING-NEXT: 04 .{{$}}
#--- already-defined.lds
## A section class has more than one description.
SECTIONS {
CLASS(a) { *(.rodata.a) }
CLASS(a) { *(.rodata.b) }
CLASS(b) { *(.rodata.c) }
CLASS(b) { *(.rodata.d) }
}
# RUN: not ld.lld -T already-defined.lds matching.o 2>&1 | \
# RUN: FileCheck %s --check-prefix=ALREADY-DEFINED --implicit-check-not=error:
# ALREADY-DEFINED: error: already-defined.lds:4: section class 'a' already defined
#--- missing-filename-pattern-1.lds
## A filename pattern is missing in a section class description.
SECTIONS {
CLASS(a) { (.rodata.a) }
}
#--- missing-filename-pattern-2.lds
## A filename pattern is missing in a section class description.
SECTIONS {
CLASS(a) { .rodata.a) }
}
# RUN: not ld.lld -T missing-filename-pattern-1.lds matching.o 2>&1 | \
# RUN: FileCheck %s --check-prefix=MISSING-FILENAME-PATTERN --implicit-check-not=error:
# RUN: not ld.lld -T missing-filename-pattern-2.lds matching.o 2>&1 | \
# RUN: FileCheck %s --check-prefix=MISSING-FILENAME-PATTERN --implicit-check-not=error:
# MISSING-FILENAME-PATTERN: error: missing-filename-pattern-{{[1-2]}}.lds:3: expected filename pattern
#--- multiple-class-names.lds
## More than one class is mentioned in a reference.
SECTIONS {
CLASS(a) { *(.rodata.a) }
CLASS(b) { *(.rodata.b) }
.rodata : { CLASS(a b) }
}
# RUN: not ld.lld -T multiple-class-names.lds matching.o 2>&1 | \
# RUN: FileCheck %s --check-prefix=MULTIPLE-CLASS-NAMES --implicit-check-not=error:
# MULTIPLE-CLASS-NAMES: error: multiple-class-names.lds:5: ) expected, but got b
#--- undefined.lds
## A section class is referenced but never defined
SECTIONS {
.rodata : { CLASS(a) }
}
# RUN: not ld.lld -T undefined.lds matching.o 2>&1 | \
# RUN: FileCheck %s --check-prefix=UNDEFINED --implicit-check-not=error:
# UNDEFINED: error: undefined section class 'a'
#--- referenced-before-defined.lds
## The content of section classes is demanded before its definition is processed.
SECTIONS {
.rodata : { CLASS(a) }
CLASS(a) { *(.rodata.a) }
}
# RUN: not ld.lld -T referenced-before-defined.lds matching.o 2>&1 | \
# RUN: FileCheck %s --check-prefix=REFERENCED-BEFORE-DEFINED
# RUN: ld.lld -T referenced-before-defined.lds matching.o -o out --noinhibit-exec 2>&1 | \
# RUN: FileCheck %s --check-prefix=REFERENCED-BEFORE-DEFINED-WARN
# REFERENCED-BEFORE-DEFINED: error: section class 'a' referenced by '.rodata' before class definition
# REFERENCED-BEFORE-DEFINED-WARN: warning: section class 'a' referenced by '.rodata' before class definition
#--- unreferenced.lds
## An input section is bound to a section class but is not referenced.
SECTIONS {
CLASS(a) { *(.rodata.*) }
}
# RUN: not ld.lld -T unreferenced.lds matching.o 2>&1 | \
# RUN: FileCheck %s --check-prefix=UNREFERENCED -implicit-check-not=error:
# RUN: ld.lld -T unreferenced.lds matching.o -o out --noinhibit-exec 2>&1 | \
# RUN: FileCheck %s --check-prefix=UNREFERENCED-WARN -implicit-check-not=error:
# UNREFERENCED: error: section class 'a' is unreferenced
# UNREFERENCED-WARN: warning: section class 'a' is unreferenced
#--- class-references-class.lds
## One section class references another.
SECTIONS {
CLASS(a) { *(.rodata.a) }
CLASS(b) { CLASS(a) }
}
# RUN: not ld.lld -T class-references-class.lds matching.o 2>&1 | \
# RUN: FileCheck %s --check-prefix=CLASS-REFERENCES-CLASS --implicit-check-not=error:
# CLASS-REFERENCES-CLASS: error: class-references-class.lds:4: section class 'b' references class 'a'
#--- spill.s
.section .one_byte_section,"a",@progbits
.fill 1
.section .two_byte_section,"a",@progbits
.fill 2
# RUN: llvm-mc -n -filetype=obj -triple=x86_64 spill.s -o spill.o
#--- spill.lds
## An input section in a class spills to a later class ref when the region of
## its first ref would overflow. The spill uses the alignment of the later ref.
MEMORY {
a : ORIGIN = 0, LENGTH = 2
b : ORIGIN = 2, LENGTH = 16
}
SECTIONS {
CLASS(c) { *(.two_byte_section) }
.first_chance : SUBALIGN(1) { *(.one_byte_section) CLASS(c) } >a
.last_chance : SUBALIGN(8) { CLASS (c) } >b
}
# RUN: ld.lld -T spill.lds spill.o -o spill
# RUN: llvm-readelf -S spill | FileCheck %s --check-prefix=SPILL
# SPILL: Name Type Address Off Size
# SPILL: .first_chance PROGBITS 0000000000000000 001000 000001
# SPILL-NEXT: .last_chance PROGBITS 0000000000000008 001008 000002
#--- spill-fail.lds
## A spill off the end still fails the link.
MEMORY {
a : ORIGIN = 0, LENGTH = 1
b : ORIGIN = 2, LENGTH = 0
}
SECTIONS {
CLASS(c) { *(.two_byte_section) }
.first_chance : { *(.one_byte_section) CLASS(c) } >a
.last_chance : { CLASS(c) } >b
}
# RUN: not ld.lld -T spill-fail.lds spill.o 2>&1 |\
# RUN: FileCheck %s --check-prefix=SPILL-FAIL --implicit-check-not=error:
# SPILL-FAIL: error: section '.last_chance' will not fit in region 'b': overflowed by 2 bytes
#--- spill-lma.lds
## The above spill still occurs when the LMA would overflow, even though the
## VMA would fit.
MEMORY {
vma_a : ORIGIN = 0, LENGTH = 3
vma_b : ORIGIN = 3, LENGTH = 3
lma_a : ORIGIN = 6, LENGTH = 2
lma_b : ORIGIN = 8, LENGTH = 2
}
SECTIONS {
CLASS(c) { *(.two_byte_section) }
.first_chance : { *(.one_byte_section) CLASS(c) } >vma_a AT>lma_a
.last_chance : { CLASS(c) } >vma_b AT>lma_b
}
# RUN: ld.lld -T spill-lma.lds spill.o -o spill-lma
# RUN: llvm-readelf -S spill-lma | FileCheck %s --check-prefix=SPILL-LMA
# SPILL-LMA: Name Type Address Off Size
# SPILL-LMA: .first_chance PROGBITS 0000000000000000 001000 000001
# SPILL-LMA-NEXT: .last_chance PROGBITS 0000000000000003 001003 000002
#--- spill-later.lds
## A spill occurs to an additional class ref after the first.
MEMORY {
a : ORIGIN = 0, LENGTH = 2
b : ORIGIN = 2, LENGTH = 1
c : ORIGIN = 3, LENGTH = 2
}
SECTIONS {
CLASS(c) { *(.two_byte_section) }
.first_chance : { *(.one_byte_section) CLASS(c) } >a
.second_chance : { CLASS(c) } >b
.last_chance : { CLASS(c) } >c
}
# RUN: ld.lld -T spill-later.lds spill.o -o spill-later
# RUN: llvm-readelf -S spill-later | FileCheck %s --check-prefix=SPILL-LATER
# SPILL-LATER: Name Type Address Off Size
# SPILL-LATER: .first_chance PROGBITS 0000000000000000 001000 000001
# SPILL-LATER-NEXT: .second_chance PROGBITS 0000000000000002 001001 000000
# SPILL-LATER-NEXT: .last_chance PROGBITS 0000000000000003 001003 000002
#--- spill-earlier.lds
## A later overflow causes an earlier section to spill.
MEMORY {
a : ORIGIN = 0, LENGTH = 2
b : ORIGIN = 2, LENGTH = 1
}
SECTIONS {
CLASS(c) { *(.one_byte_section) }
.first_chance : { CLASS(c) *(.two_byte_section) } >a
.last_chance : { CLASS(c) } >b
}
# RUN: ld.lld -T spill-earlier.lds spill.o -o spill-earlier
# RUN: llvm-readelf -S spill-earlier | FileCheck %s --check-prefix=SPILL-EARLIER
# SPILL-EARLIER: Name Type Address Off Size
# SPILL-EARLIER: .first_chance PROGBITS 0000000000000000 001000 000002
# SPILL-EARLIER-NEXT: .last_chance PROGBITS 0000000000000002 001002 000001
#--- enable-non-contiguous-regions.lds
## Class definitions do not preclude additional matches when used with
## --enable-non-contiguous-regions, and additional matches in class
## definitions become spills at class references.
MEMORY {
a : ORIGIN = 0, LENGTH = 1
b : ORIGIN = 1, LENGTH = 2
c : ORIGIN = 3, LENGTH = 1
}
SECTIONS {
.first_chance : { *(.two_byte_section) } >a
/* An additional match in a class defers a spill. */
CLASS(two) { *(.two_byte_section) }
/* A class references actualizes deferred spills. */
.last_chance : { CLASS(two) } >b
/* Section classes do not preclude other matches. */
CLASS(one) { *(.one_byte_section) }
.one_byte_section : { *(.one_byte_section) } >c
}
# RUN: ld.lld -T enable-non-contiguous-regions.lds spill.o -o enable-non-contiguous-regions --enable-non-contiguous-regions
# RUN: llvm-readelf -S enable-non-contiguous-regions | FileCheck %s --check-prefix=ENABLE-NON-CONTIGUOUS-REGIONS
# ENABLE-NON-CONTIGUOUS-REGIONS: Name Type Address Off Size
# ENABLE-NON-CONTIGUOUS-REGIONS: .first_chance PROGBITS 0000000000000000 000190 000000
# ENABLE-NON-CONTIGUOUS-REGIONS-NEXT: .last_chance PROGBITS 0000000000000001 001001 000002
# ENABLE-NON-CONTIGUOUS-REGIONS-NEXT: .one_byte_section PROGBITS 0000000000000003 001003 000001
#--- merge.s
.section .a,"aM",@progbits,1
.byte 0x12, 0x34
.section .b,"aM",@progbits,1
.byte 0x12
# RUN: llvm-mc -n -filetype=obj -triple=x86_64 merge.s -o merge.o
#--- spill-merge.lds
## SHF_MERGE sections are spilled according to the class refs of the first
## merged input section (the one giving the resulting section its name).
MEMORY {
a : ORIGIN = 0, LENGTH = 1
b : ORIGIN = 1, LENGTH = 2
c : ORIGIN = 3, LENGTH = 2
}
SECTIONS {
CLASS(a) { *(.a) }
CLASS(b) { *(.b) }
.first : { CLASS(a) CLASS(b) } >a
.second : { CLASS(a) } >b
.third : { CLASS(b) } >c
}
# RUN: ld.lld -T spill-merge.lds merge.o -o spill-merge
# RUN: llvm-readelf -S spill-merge | FileCheck %s --check-prefix=SPILL-MERGE
# SPILL-MERGE: Name Type Address Off Size
# SPILL-MERGE: .first PROGBITS 0000000000000000 000190 000000
# SPILL-MERGE-NEXT: .second PROGBITS 0000000000000001 001001 000002
# SPILL-MERGE-NEXT: .third PROGBITS 0000000000000003 001003 000000
#--- link-order.s
.section .a,"a",@progbits
.fill 1
.section .b,"a",@progbits
.fill 1
.section .c,"a",@progbits
.fill 1
.section .link_order.a,"ao",@progbits,.a
.byte 1
.section .link_order.b,"ao",@progbits,.b
.byte 2
.section .link_order.c,"ao",@progbits,.c
.byte 3
# RUN: llvm-mc -n -filetype=obj -triple=x86_64 link-order.s -o link-order.o
#--- link-order.lds
## SHF_LINK_ORDER is reordered when spilling changes relative section order.
MEMORY {
order : ORIGIN = 0, LENGTH = 3
potential_a : ORIGIN = 3, LENGTH = 0
bc : ORIGIN = 3, LENGTH = 2
actual_a : ORIGIN = 5, LENGTH = 1
}
SECTIONS {
CLASS(a) { *(.a) }
.order : { *(.link_order.*) } > order
.potential_a : { CLASS(a) } >potential_a
.bc : { *(.b) *(.c) } >bc
.actual_a : { CLASS(a) } >actual_a
}
# RUN: ld.lld -T link-order.lds link-order.o -o link-order
# RUN: llvm-objdump -s link-order | FileCheck %s --check-prefix=LINK-ORDER
# LINK-ORDER: 020301 ...{{$}}
#--- from-insert.lds
## A section might spill from INSERT.
SECTIONS {
CLASS(class) { *(.two_byte_section) }
.a : { *(.one_byte_section) }
}
SECTIONS { .b : { CLASS(class) } } INSERT AFTER .a;
SECTIONS { .c : { CLASS(class) } }
# RUN: not ld.lld -T from-insert.lds spill.o 2>&1 |\
# RUN: FileCheck %s --check-prefix=FROM-INSERT
# RUN: ld.lld -T from-insert.lds spill.o -o out --noinhibit-exec 2>&1 |\
# RUN: FileCheck %s --check-prefix=FROM-INSERT-WARN
# FROM-INSERT: error: section '.two_byte_section' cannot spill from/to INSERT section '.b'
# FROM-INSERT-WARN: warning: section '.two_byte_section' cannot spill from/to INSERT section '.b'
#--- to-insert.lds
## A section might spill to INSERT.
SECTIONS {
CLASS(class) { *(.two_byte_section) }
.a : { CLASS(class) *(.one_byte_section) }
}
SECTIONS { .b : { CLASS(class) } } INSERT AFTER .a;
# RUN: not ld.lld -T to-insert.lds spill.o 2>&1 |\
# RUN: FileCheck %s --check-prefix=TO-INSERT
# RUN: ld.lld -T to-insert.lds spill.o -o out --noinhibit-exec 2>&1 |\
# RUN: FileCheck %s --check-prefix=TO-INSERT-WARN
# TO-INSERT: error: section '.two_byte_section' cannot spill from/to INSERT section '.b'
# TO-INSERT-WARN: warning: section '.two_byte_section' cannot spill from/to INSERT section '.b'
#--- from-discard.lds
## A section might spill from /DISCARD/.
SECTIONS {
CLASS(class) { *(.two_byte_section) }
/DISCARD/ : { CLASS(class) }
.c : { CLASS(class) }
}
# RUN: not ld.lld -T from-discard.lds spill.o 2>&1 |\
# RUN: FileCheck %s --check-prefix=FROM-DISCARD
# RUN: ld.lld -T from-discard.lds spill.o -o out --noinhibit-exec 2>&1 |\
# RUN: FileCheck %s --check-prefix=FROM-DISCARD-WARN
# FROM-DISCARD: error: section '.two_byte_section' cannot spill from/to /DISCARD/
# FROM-DISCARD-WARN: warning: section '.two_byte_section' cannot spill from/to /DISCARD/
#--- to-discard.lds
## A section might spill to /DISCARD/.
SECTIONS {
CLASS(class) { *(.two_byte_section) }
.a : { CLASS(class) }
/DISCARD/ : { CLASS(class) }
}
# RUN: not ld.lld -T to-discard.lds spill.o 2>&1 |\
# RUN: FileCheck %s --check-prefix=TO-DISCARD
# RUN: ld.lld -T to-discard.lds spill.o -o out --noinhibit-exec 2>&1 |\
# RUN: FileCheck %s --check-prefix=TO-DISCARD-WARN
# TO-DISCARD: error: section '.two_byte_section' cannot spill from/to /DISCARD/
# TO-DISCARD-WARN: warning: section '.two_byte_section' cannot spill from/to /DISCARD/
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