From 546d0fbd9718ea5ad422faaeffea939fe7312408 Mon Sep 17 00:00:00 2001
From: Bill Wendling <isanbard@gmail.com>
Date: Thu, 8 Feb 2007 01:41:07 +0000
Subject: [PATCH] The new version of how to add passes to emit files. We
 explicitly call a function to add the file writers between calls to add the
 passes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34035 91177308-0d34-0410-b5e6-96231b3b80d8
---
 tools/llc/llc.cpp | 26 +++++++++++++++++++++++++-
 tools/lto/lto.cpp | 28 ++++++++++++++++++++++++++--
 2 files changed, 51 insertions(+), 3 deletions(-)

diff --git a/tools/llc/llc.cpp b/tools/llc/llc.cpp
index d8b596db8d7..376ad768b0f 100644
--- a/tools/llc/llc.cpp
+++ b/tools/llc/llc.cpp
@@ -14,6 +14,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Bytecode/Reader.h"
+#include "llvm/CodeGen/FileWriters.h"
 #include "llvm/CodeGen/LinkAllCodegenComponents.h"
 #include "llvm/Target/SubtargetFeature.h"
 #include "llvm/Target/TargetData.h"
@@ -248,7 +249,30 @@ int main(int argc, char **argv) {
 #endif
     
       // Ask the target to add backend passes as necessary.
-      if (Target.addPassesToEmitFile(Passes, *Out, FileType, Fast)) {
+      MachineCodeEmitter *MCE = 0;
+
+      switch (Target.addPassesToEmitFile(Passes, *Out, FileType, Fast)) {
+      default:
+        assert(0 && "Invalid file model!");
+        return 1;
+      case FileModel::Error:
+        std::cerr << argv[0] << ": target does not support generation of this"
+                  << " file type!\n";
+        if (Out != &std::cout) delete Out;
+        // And the Out file is empty and useless, so remove it now.
+        sys::Path(OutputFilename).eraseFromDisk();
+        return 1;
+      case FileModel::AsmFile:
+        break;
+      case FileModel::MachOFile:
+        MCE = AddMachOWriter(Passes, *Out, Target);
+        break;
+      case FileModel::ElfFile:
+        MCE = AddELFWriter(Passes, *Out, Target);
+        break;
+      }
+
+      if (Target.addPassesToEmitFileFinish(Passes, MCE, Fast)) {
         std::cerr << argv[0] << ": target does not support generation of this"
                   << " file type!\n";
         if (Out != &std::cout) delete Out;
diff --git a/tools/lto/lto.cpp b/tools/lto/lto.cpp
index d7dec3f7fa1..816b1d8ebbc 100644
--- a/tools/lto/lto.cpp
+++ b/tools/lto/lto.cpp
@@ -27,6 +27,7 @@
 #include "llvm/System/Signals.h"
 #include "llvm/Analysis/Passes.h"
 #include "llvm/Analysis/Verifier.h"
+#include "llvm/CodeGen/FileWriters.h"
 #include "llvm/Target/SubtargetFeature.h"
 #include "llvm/Target/TargetData.h"
 #include "llvm/Target/TargetMachine.h"
@@ -308,8 +309,31 @@ LTO::optimize(Module *M, std::ostream &Out,
     new FunctionPassManager(new ExistingModuleProvider(M));
 
   CodeGenPasses->add(new TargetData(*Target->getTargetData()));
-  Target->addPassesToEmitFile(*CodeGenPasses, Out, TargetMachine::AssemblyFile, 
-                              true);
+
+  MachineCodeEmitter *MCE = 0;
+
+  switch (Target->addPassesToEmitFile(*CodeGenPasses, Out,
+                                     TargetMachine::AssemblyFile, true)) {
+  default:
+    assert(0 && "Invalid file model!");
+    return LTO_UNKNOWN;
+  case FileModel::Error:
+    // FIXME: Error...
+    return LTO_UNKNOWN;
+  case FileModel::AsmFile:
+    break;
+  case FileModel::MachOFile:
+    MCE = AddMachOWriter(*CodeGenPasses, Out, *Target);
+    break;
+  case FileModel::ElfFile:
+    MCE = AddELFWriter(*CodeGenPasses, Out, *Target);
+    break;
+  }
+
+  if (Target->addPassesToEmitFileFinish(*CodeGenPasses, MCE, true)) {
+    // FIXME: Error...
+    return LTO_UNKNOWN;
+  }
 
   // Run our queue of passes all at once now, efficiently.
   Passes.run(*M);
-- 
2.34.1