[lto] Initialize asmparsers.

Summary:
They are needed for inline asm during LTO.

In particular we hit the report_fatal_error on
llvm/lib/CodeGen/AsmPrinter/AsmPrinterInlineAsm.cpp:138

    LLVM ERROR: Inline asm not supported by this streamer because we don't have an asm parser for this target

Reviewers: ruiu, rafael

Subscribers: Bigcheese, llvm-commits, joker.eph

Differential Revision: http://reviews.llvm.org/D18027

llvm-svn: 263094

diff --git a/lld/ELF/Driver.cpp b/lld/ELF/Driver.cpp
index 7b1ee79..806846e 100644 (file)
--- a/lld/ELF/Driver.cpp
+++ b/lld/ELF/Driver.cpp
@@ -321,6 +321,7 @@ template <class ELFT> void LinkerDriver::link(opt::InputArgList &Args) {
   InitializeAllTargets();
   InitializeAllTargetMCs();
   InitializeAllAsmPrinters();
+  InitializeAllAsmParsers();
 
   SymbolTable<ELFT> Symtab;
   std::unique_ptr<TargetInfo> TI(createTarget());

diff --git a/lld/test/ELF/lto/inline-asm.ll b/lld/test/ELF/lto/inline-asm.ll
new file mode 100644 (file)
index 0000000..b6af6a5
--- /dev/null
+++ b/lld/test/ELF/lto/inline-asm.ll
@@ -0,0 +1,11 @@
+; REQUIRES: x86
+; RUN: llvm-as %s -o %t.o
+; RUN: ld.lld -m elf_x86_64 %t.o -o %t.so -shared
+
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+define void @foo() {
+  call void asm "nop", ""()
+  ret void
+}