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author | Tom Roeder <tmroeder@google.com> | 2014-04-25 21:46:51 +0000 |
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committer | Tom Roeder <tmroeder@google.com> | 2014-04-25 21:46:51 +0000 |
commit | 817f5e2fa137b15b536c952bcc1e75b1dd34b4b1 (patch) | |
tree | f514566a78e689fcc0c138b83fde6342a4c26c9a /tools/llvm-lto | |
parent | c744a371534456c1bb6557f053705f066ac33b62 (diff) | |
download | llvm-817f5e2fa137b15b536c952bcc1e75b1dd34b4b1.tar.gz llvm-817f5e2fa137b15b536c952bcc1e75b1dd34b4b1.tar.bz2 llvm-817f5e2fa137b15b536c952bcc1e75b1dd34b4b1.tar.xz |
Add an -mattr option to the gold plugin to support subtarget features in LTO
This adds support for an -mattr option to the gold plugin and to llvm-lto. This
allows the caller to specify details of the subtarget architecture, like +aes,
or +ssse3 on x86. Note that this requires a change to the include/llvm-c/lto.h
interface: it adds a function lto_codegen_set_attr and it increments the
version of the interface.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207279 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'tools/llvm-lto')
-rw-r--r-- | tools/llvm-lto/llvm-lto.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/tools/llvm-lto/llvm-lto.cpp b/tools/llvm-lto/llvm-lto.cpp index 1a92bf4f0e..678e4db08f 100644 --- a/tools/llvm-lto/llvm-lto.cpp +++ b/tools/llvm-lto/llvm-lto.cpp @@ -143,6 +143,16 @@ int main(int argc, char **argv) { for (unsigned i = 0; i < KeptDSOSyms.size(); ++i) CodeGen.addMustPreserveSymbol(KeptDSOSyms[i].c_str()); + std::string attrs; + for (unsigned i = 0; i < MAttrs.size(); ++i) { + if (i > 0) + attrs.append(","); + attrs.append(MAttrs[i]); + } + + if (!attrs.empty()) + CodeGen.setAttr(attrs.c_str()); + if (!OutputFilename.empty()) { size_t len = 0; std::string ErrorInfo; |