| REQUIRES: x86-registered-target,ld.lld,llvm-ar |
| |
| # Test that a DTLTO link succeeds with a multi-module (via -fsplit-lto-unit) |
| # bitcode file. We use an archive, as archive member inputs exercise more of |
| # the DTLTO specific code than other input file types. |
| |
| RUN: rm -rf %t && split-file %s %t && cd %t |
| |
| RUN: %clang -O2 --target=x86_64-linux-gnu -flto=thin -c usebar.cc \ |
| RUN: -fno-rtti -fno-exceptions -fsplit-lto-unit |
| |
| # Sanity check that multi-module bitcode was produced. |
| RUN: not llvm-modextract -n 2 usebar.o -o - 2>&1 \ |
| RUN: | FileCheck %s --check-prefix=TWO |
| TWO: bitcode file contains 2 module(s) |
| |
| # Create an archive. |
| RUN: llvm-ar rcs usebar.a usebar.o |
| |
| # Build with DTLTO. |
| RUN: %clang -O2 --target=x86_64-linux-gnu -flto=thin -fuse-ld=lld \ |
| RUN: -nostdlib -shared -Wl,--whole-archive,--allow-shlib-undefined usebar.a \ |
| RUN: -fthinlto-distributor=%python \ |
| RUN: -Xthinlto-distributor=%llvm_src_root/utils/dtlto/local.py \ |
| RUN: -Wl,--save-temps |
| |
| RUN: ls | sort | FileCheck %s |
| |
| # DTLTO JSON file - confirms DTLTO occurred. |
| CHECK: .dist-file.json |
| |
| # .native.o exists - confirms archive member usebar.o participated in DTLTO. |
| CHECK: {{^}}usebar.a(usebar.o |
| CHECK-SAME: .native.o |
| |
| #--- usebar.cc |
| // Minimal C++ input to exercise multi-module emission with -fsplit-lto-unit. |
| struct A { virtual int foo(); }; |
| int bar(A *a); |
| |
| struct B : A { int foo() { return 2; } }; |
| int use() { static B b; return bar(&b); } |
