Object, LTO: Add target triple to irsymtab and LTO API.

Start using it in LLD to avoid needing to read bitcode again just to get the
target triple, and in llvm-lto2 to avoid printing symbol table information
that is inappropriate for the target.

Differential Revision: https://reviews.llvm.org/D32038

llvm-svn: 300300

1 files changed, 7 insertions, 2 deletions

diff --git a/llvm/tools/llvm-lto2/llvm-lto2.cpp b/llvm/tools/llvm-lto2/llvm-lto2.cpp
index 7a8d4055338..3d2643db85b 100644
--- a/llvm/tools/llvm-lto2/llvm-lto2.cpp
+++ b/llvm/tools/llvm-lto2/llvm-lto2.cpp
@@ -293,8 +293,13 @@ static int dumpSymtab(int argc, char **argv) {
     std::unique_ptr<InputFile> Input =
         check(InputFile::create(MB->getMemBufferRef()), F);
 
+    outs() << "target triple: " << Input->getTargetTriple() << '\n';
+    Triple TT(Input->getTargetTriple());
+
     outs() << "source filename: " << Input->getSourceFileName() << '\n';
-    outs() << "linker opts (COFF only): " << Input->getCOFFLinkerOpts() << '\n';
+
+    if (TT.isOSBinFormatCOFF())
+      outs() << "linker opts: " << Input->getCOFFLinkerOpts() << '\n';
 
     std::vector<StringRef> ComdatTable = Input->getComdatTable();
     for (const InputFile::Symbol &Sym : Input->symbols()) {
@@ -328,7 +333,7 @@ static int dumpSymtab(int argc, char **argv) {
       if (Comdat != -1)
         outs() << "         comdat " << ComdatTable[Comdat] << '\n';
 
-      if (Sym.isWeak() && Sym.isIndirect())
+      if (TT.isOSBinFormatCOFF() && Sym.isWeak() && Sym.isIndirect())
         outs() << "         fallback " << Sym.getCOFFWeakExternalFallback() << '\n';
     }