REQUIRES: ld.lld,llvm-ar

# Test that a DTLTO link succeeds and outputs the expected set of files
# correctly when FatLTO objects are present.
RUN: rm -rf %t && split-file %s %t && cd %t

# Compile bitcode. -O2 is required for cross-module importing.
RUN: %clang -O2 --target=x86_64-linux-gnu -flto=thin -ffat-lto-objects -c \
RUN:   foo.c boo.c start.c

# We want to test FatLTO objects when included in archives.
RUN: llvm-ar rcs foo.a foo.o
RUN: llvm-ar rcsT boo.a boo.o

# Build with DTLTO.
RUN: %clang --target=x86_64-linux-gnu -flto=thin -ffat-lto-objects \
RUN:   -fuse-ld=lld -nostdlib foo.a boo.a start.o -Wl,--save-temps \
RUN:   -fthinlto-distributor=%python \
RUN:   -Xthinlto-distributor=%llvm_src_root/utils/dtlto/local.py

# Check that the required output files have been created.
RUN: ls | FileCheck %s

# thin archive member: <archive>(<member> at <offset>).<task>.<pid>.<task>.<pid>.native.o
CHECK-DAG: {{^}}boo.a(boo.o at [[#BOO_OFFSET:]]).3.[[#%X,HEXPID:]].3.[[#PID:]].native.o{{$}}
# archive member: <archive>(<member> at <offset>).<task>.<pid>.<task>.<pid>.native.o
CHECK-DAG: {{^}}foo.a(foo.o at [[#FOO_OFFSET:]]).2.[[#%X,HEXPID]].2.[[#PID]].native.o{{$}}
# FatLTO object: <file>.<task>.<pid>.<task>.<pid>.native.o.
CHECK-DAG: {{^}}start.o.1.[[#%X,HEXPID]].1.[[#PID]].native.o{{$}}

# Check that all objects are named in all of the index files.
# We expect this to happen because each object references symbols from the
# others.
RUN: llvm-dis *.1.*.thinlto.bc -o - | \
RUN:   FileCheck %s --check-prefixes=OBJECTS
RUN: llvm-dis *.2.*.thinlto.bc -o - | \
RUN:   FileCheck %s --check-prefixes=OBJECTS
RUN: llvm-dis *.3.*.thinlto.bc -o - | \
RUN:   FileCheck %s --check-prefixes=OBJECTS

OBJECTS-DAG: foo.o
OBJECTS-DAG: boo.o
OBJECTS-DAG: start.o

#--- foo.c
extern int boo(int), _start(int);
__attribute__((retain)) int foo(int x) { return x + boo(x) + _start(x); }

#--- boo.c
extern int foo(int), _start(int);
__attribute__((retain)) int boo(int x) { return x + foo(x) + _start(x); }

#--- start.c
extern int foo(int), boo(int);
__attribute__((retain)) int _start(int x) { return x + foo(x) + boo(x); }