Add support for inline asm symbols in llvm-ar.

This should allow llvm-ar to be used instead of gnu ar + plugin in a LTO
build. I will add a release note about it once I finish a LTO bootstrap with it.

llvm-svn: 212287

4 files changed, 27 insertions, 1 deletions

diff --git a/llvm/test/Object/X86/archive-ir-asm.ll b/llvm/test/Object/X86/archive-ir-asm.ll
new file mode 100644
index 00000000000..31ef6c6ac3d
--- /dev/null
+++ b/llvm/test/Object/X86/archive-ir-asm.ll
@@ -0,0 +1,20 @@
+; RUN: llvm-as %s -o=%t1
+; RUN: rm -f %t2
+; RUN: llvm-ar rcs %t2 %t1
+; RUN: llvm-nm -s %t2 | FileCheck %s
+
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+module asm ".global global_asm_sym"
+module asm "global_asm_sym:"
+module asm "local_asm_sym:"
+module asm ".long undef_asm_sym"
+
+; CHECK: Archive map
+; CHECK-NEXT: global_asm_sym in archive-ir-asm.ll
+
+; CHECK: archive-ir-asm.ll
+; CHECK-NEXT:         T global_asm_sym
+; CHECK-NEXT:         t local_asm_sym
+; CHECK-NEXT:         U undef_asm_sym
diff --git a/llvm/tools/llvm-ar/CMakeLists.txt b/llvm/tools/llvm-ar/CMakeLists.txt
index 9295efeeee7..0e809a705bb 100644
--- a/llvm/tools/llvm-ar/CMakeLists.txt
+++ b/llvm/tools/llvm-ar/CMakeLists.txt
@@ -1,4 +1,5 @@
 set(LLVM_LINK_COMPONENTS
+  ${LLVM_TARGETS_TO_BUILD}
   Object
   Support
   )
diff --git a/llvm/tools/llvm-ar/Makefile b/llvm/tools/llvm-ar/Makefile
index 16a828396cb..e10d6ac6ab6 100644
--- a/llvm/tools/llvm-ar/Makefile
+++ b/llvm/tools/llvm-ar/Makefile
@@ -10,7 +10,7 @@
 LEVEL := ../..
 TOOLNAME := llvm-ar
 TOOLALIAS = llvm-ranlib
-LINK_COMPONENTS := bitreader support object
+LINK_COMPONENTS := all-targets bitreader support object
 
 # This tool has no plugins, optimize startup time.
 TOOL_NO_EXPORTS := 1
diff --git a/llvm/tools/llvm-ar/llvm-ar.cpp b/llvm/tools/llvm-ar/llvm-ar.cpp
index 60886bb7b11..4bd586be451 100644
--- a/llvm/tools/llvm-ar/llvm-ar.cpp
+++ b/llvm/tools/llvm-ar/llvm-ar.cpp
@@ -24,6 +24,7 @@
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/PrettyStackTrace.h"
 #include "llvm/Support/Signals.h"
+#include "llvm/Support/TargetSelect.h"
 #include "llvm/Support/ToolOutputFile.h"
 #include "llvm/Support/raw_ostream.h"
 #include <algorithm>
@@ -903,6 +904,10 @@ int main(int argc, char **argv) {
     "  This program archives bitcode files into single libraries\n"
   );
 
+  llvm::InitializeAllTargetInfos();
+  llvm::InitializeAllTargetMCs();
+  llvm::InitializeAllAsmParsers();
+
   StringRef Stem = sys::path::stem(ToolName);
   if (Stem.find("ar") != StringRef::npos)
     return ar_main(argv);