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| author | Zakk Chen <zakk.chen@sifive.com> | 2020-04-27 20:04:36 -0700 |
|---|---|---|
| committer | Zakk Chen <zakk.chen@sifive.com> | 2020-05-04 18:31:09 -0700 |
| commit | ad5fad0ac56b78a692a052f2da397b4bc7fd6150 (patch) | |
| tree | 443120a8bc6d8f5913652bc25720454021571c26 /llvm/tools/gold | |
| parent | 36183811fb5455ea18cf7d9cd03748076f20573b (diff) | |
| download | llvm-ad5fad0ac56b78a692a052f2da397b4bc7fd6150.zip llvm-ad5fad0ac56b78a692a052f2da397b4bc7fd6150.tar.gz llvm-ad5fad0ac56b78a692a052f2da397b4bc7fd6150.tar.bz2 | |
[LTO] Suppress emission of empty combined module by default
Summary:
That unless the user requested an output object (--lto-obj-path), the an
unused empty combined module is not emitted.
This changed is helpful for some target (ex. RISCV-V) which encoded the
ABI info in IR module flags (target-abi). Empty unused module has no ABI
info so the linker would get the linking error during merging
incompatible ABIs.
Reviewers: tejohnson, espindola, MaskRay
Subscribers: emaste, inglorion, arichardson, hiraditya, simoncook, MaskRay, steven_wu, dexonsmith, PkmX, dang, lenary, s.egerton, luismarques, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D78988
Diffstat (limited to 'llvm/tools/gold')
| -rw-r--r-- | llvm/tools/gold/gold-plugin.cpp | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/llvm/tools/gold/gold-plugin.cpp b/llvm/tools/gold/gold-plugin.cpp index 0b249d2..50b0173 100644 --- a/llvm/tools/gold/gold-plugin.cpp +++ b/llvm/tools/gold/gold-plugin.cpp @@ -871,6 +871,7 @@ static std::unique_ptr<LTO> createLTO(IndexWriteCallback OnIndexWrite, Conf.OptLevel = options::OptLevel; Conf.PTO.LoopVectorization = options::OptLevel > 1; Conf.PTO.SLPVectorization = options::OptLevel > 1; + Conf.AlwaysEmitRegularLTOObj = !options::obj_path.empty(); if (options::thinlto_index_only) { std::string OldPrefix, NewPrefix; |