[llvm-commits] [llvm] r54892 - in /llvm/trunk: include/llvm/CodeGen/LinkAllAsmWriterComponents.h tools/llc/llc.cpp

[Anton Korobeynikov]

Author: asl
Date: Sun Aug 17 09:33:01 2008
New Revision: 54892

URL: http://llvm.org/viewvc/llvm-project?rev=54892&view=rev
Log:
Link GC metadata printers by default to llc

Added:
    llvm/trunk/include/llvm/CodeGen/LinkAllAsmWriterComponents.h
Modified:
    llvm/trunk/tools/llc/llc.cpp

Added: llvm/trunk/include/llvm/CodeGen/LinkAllAsmWriterComponents.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/CodeGen/LinkAllAsmWriterComponents.h?rev=54892&view=auto

==============================================================================
--- llvm/trunk/include/llvm/CodeGen/LinkAllAsmWriterComponents.h (added)
+++ llvm/trunk/include/llvm/CodeGen/LinkAllAsmWriterComponents.h Sun Aug 17 09:33:01 2008
@@ -0,0 +1,37 @@
+//===- llvm/Codegen/LinkAllAsmWriterComponents.h ----------------*- C++ -*-===//
+//
+//                      The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This header file pulls in all assembler writer related passes for tools like
+// llc that need this functionality.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CODEGEN_LINKALLASMWRITERCOMPONENTS_H
+#define LLVM_CODEGEN_LINKALLASMWRITERCOMPONENTS_H
+
+#include "llvm/CodeGen/GCs.h"
+
+namespace {
+  struct ForceAsmWriterLinking {
+    ForceAsmWriterLinking() {
+      // We must reference the passes in such a way that compilers will not
+      // delete it all as dead code, even with whole program optimization,
+      // yet is effectively a NO-OP. As the compiler isn't smart enough
+      // to know that getenv() never returns -1, this will do the job.
+      if (std::getenv("bar") != (char*) -1)
+        return;
+
+      (void) llvm::createOcamlMetadataPrinter();
+
+    }
+  } ForceAsmWriterLinking; // Force link by creating a global definition.
+}
+
+#endif // LLVM_CODEGEN_LINKALLASMWRITERCOMPONENTS_H
+

Modified: llvm/trunk/tools/llc/llc.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llc/llc.cpp?rev=54892&r1=54891&r2=54892&view=diff

==============================================================================
--- llvm/trunk/tools/llc/llc.cpp (original)
+++ llvm/trunk/tools/llc/llc.cpp Sun Aug 17 09:33:01 2008
@@ -16,6 +16,7 @@
 #include "llvm/Bitcode/ReaderWriter.h"
 #include "llvm/CodeGen/FileWriters.h"
 #include "llvm/CodeGen/LinkAllCodegenComponents.h"
+#include "llvm/CodeGen/LinkAllAsmWriterComponents.h"
 #include "llvm/Target/SubtargetFeature.h"
 #include "llvm/Target/TargetData.h"
 #include "llvm/Target/TargetMachine.h"