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# RUN: rm -rf %t && split-file %s %t
# RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown %t/main.s -o %t/main.o
# RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown %t/a.s -o %t/a.o
# RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown %t/a_b.s -o %t/a_b.o
# RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown %t/b.s -o %t/b.o
# RUN: llvm-ar rc %t/a.a %t/a.o
# RUN: llvm-ar rc %t/a_b.a %t/a_b.o
# RUN: llvm-ar rc %t/b.a %t/b.o
# RUN: cd %t
## Nothing is extracted from an archive. The file is created with just a header.
# RUN: wasm-ld main.o a.o b.a -o /dev/null --why-extract=why1.txt
# RUN: FileCheck %s --input-file=why1.txt --check-prefix=CHECK1 --match-full-lines --strict-whitespace
# CHECK1:reference extracted symbol
# CHECK1-NOT:{{.}}
## Some archive members are extracted.
# RUN: wasm-ld main.o a_b.a b.a -o /dev/null --why-extract=why2.txt
# RUN: FileCheck %s --input-file=why2.txt --check-prefix=CHECK2 --match-full-lines --strict-whitespace
# CHECK2:reference extracted symbol
# CHECK2-NEXT:main.o a_b.a(a_b.o) a
# CHECK2-NEXT:a_b.a(a_b.o) b.a(b.o) b()
## An undefined symbol error does not suppress the output.
# RUN: not wasm-ld main.o a_b.a -o /dev/null --why-extract=why3.txt
# RUN: FileCheck %s --input-file=why3.txt --check-prefix=CHECK3 --match-full-lines --strict-whitespace
## Check that backward references are supported.
## - means stdout.
# RUN: wasm-ld b.a a_b.a main.o -o /dev/null --why-extract=- | FileCheck %s --check-prefix=CHECK4
# CHECK3:reference extracted symbol
# CHECK3-NEXT:main.o a_b.a(a_b.o) a
# CHECK4:reference extracted symbol
# CHECK4-NEXT:a_b.a(a_b.o) b.a(b.o) b()
# CHECK4-NEXT:main.o a_b.a(a_b.o) a
# RUN: wasm-ld main.o a_b.a b.a -o /dev/null --no-demangle --why-extract=- | FileCheck %s --check-prefix=MANGLED
# MANGLED: a_b.a(a_b.o) b.a(b.o) _Z1bv
# RUN: wasm-ld main.o a.a b.a -o /dev/null -u _Z1bv --why-extract=- | FileCheck %s --check-prefix=UNDEFINED
## We insert -u symbol before processing other files, so its name is <internal>.
## This is not ideal.
# UNDEFINED: <internal> b.a(b.o) b()
# RUN: wasm-ld main.o a.a b.a -o /dev/null -e _Z1bv --why-extract=- | FileCheck %s --check-prefix=ENTRY
# ENTRY: --entry b.a(b.o) b()
# SCRIPT: <internal> b.a(b.o) b()
# RUN: not wasm-ld -shared main.o -o /dev/null --why-extract=/ 2>&1 | FileCheck %s --check-prefix=ERR
# ERR: error: cannot open --why-extract= file /: {{.*}}
#--- main.s
.globl _start
.functype a () -> ()
_start:
.functype _start () -> ()
call a
end_function
#--- a.s
.globl a
a:
.functype a () -> ()
end_function
#--- a_b.s
.functype _Z1bv () -> ()
.globl a
a:
.functype a () -> ()
call _Z1bv
end_function
#--- b.s
.globl _Z1bv
_Z1bv:
.functype _Z1bv () -> ()
end_function
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