From 51cdac02c4125b8545728eb30ab5f54e437d6377 Mon Sep 17 00:00:00 2001
From: Viktor Kutuzov <vkutuzov@accesssoftek.com>
Date: Tue, 17 Nov 2009 18:48:27 +0000
Subject: [PATCH] Added getArchNameForAssembler method to the Triple class for
 which returns OS and Vendor independent target assembler arch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89122 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/ADT/Triple.h      |  4 +++
 lib/Support/Triple.cpp         | 27 ++++++++++++++++++
 tools/lto/LTOCodeGenerator.cpp | 50 ++++++----------------------------
 3 files changed, 39 insertions(+), 42 deletions(-)

diff --git a/include/llvm/ADT/Triple.h b/include/llvm/ADT/Triple.h
index c59f79e17b0..a9e3e53d1d7 100644
--- a/include/llvm/ADT/Triple.h
+++ b/include/llvm/ADT/Triple.h
@@ -239,6 +239,10 @@ public:
   /// environment components with a single string.
   void setOSAndEnvironmentName(StringRef Str);
 
+  /// getArchNameForAssembler - Get an architecture name that is understood by the
+  /// target assembler.
+  const char *getArchNameForAssembler();
+
   /// @}
   /// @name Static helpers for IDs.
   /// @{
diff --git a/lib/Support/Triple.cpp b/lib/Support/Triple.cpp
index 40f055f4623..840fb98fe9f 100644
--- a/lib/Support/Triple.cpp
+++ b/lib/Support/Triple.cpp
@@ -179,6 +179,33 @@ Triple::ArchType Triple::getArchTypeForDarwinArchName(StringRef Str) {
   return Triple::UnknownArch;
 }
 
+// Returns architecture name that is unsderstood by the target assembler.
+const char *Triple::getArchNameForAssembler() {
+  if (getOS() != Triple::Darwin && getVendor() != Triple::Apple)
+    return NULL;
+
+  StringRef Str = getArchName();
+  if (Str == "i386")
+    return "i386";
+  if (Str == "x86_64")
+    return "x86_64";
+  if (Str == "powerpc")
+    return "ppc";
+  if (Str == "powerpc64")
+    return "ppc64";
+  if (Str == "arm")
+    return "arm";
+  if (Str == "armv4t" || Str == "thumbv4t")
+    return "armv4t";
+  if (Str == "armv5" || Str == "armv5e" || Str == "thumbv5" || Str == "thumbv5e")
+    return "armv5";
+  if (Str == "armv6" || Str == "thumbv6")
+    return "armv6";
+  if (Str == "armv7" || Str == "thumbv7")
+    return "armv7";
+  return NULL;
+}
+
 //
 
 void Triple::Parse() const {
diff --git a/tools/lto/LTOCodeGenerator.cpp b/tools/lto/LTOCodeGenerator.cpp
index c6217214b40..eb82f984d7b 100644
--- a/tools/lto/LTOCodeGenerator.cpp
+++ b/tools/lto/LTOCodeGenerator.cpp
@@ -24,6 +24,7 @@
 #include "llvm/ModuleProvider.h"
 #include "llvm/PassManager.h"
 #include "llvm/ADT/StringExtras.h"
+#include "llvm/ADT/Triple.h"
 #include "llvm/Analysis/Passes.h"
 #include "llvm/Analysis/LoopPass.h"
 #include "llvm/Analysis/Verifier.h"
@@ -242,51 +243,16 @@ bool LTOCodeGenerator::assemble(const std::string& asmPath,
 
     // build argument list
     std::vector<const char*> args;
-    std::string targetTriple = _linker.getModule()->getTargetTriple();
+    llvm::Triple targetTriple(_linker.getModule()->getTargetTriple());
+    const char *arch = targetTriple.getArchNameForAssembler();
+
     args.push_back(tool.c_str());
-    if ( targetTriple.find("darwin") != std::string::npos ) {
+
+    if (targetTriple.getOS() == Triple::Darwin) {
         // darwin specific command line options
-        if (strncmp(targetTriple.c_str(), "i386-apple-", 11) == 0) {
-            args.push_back("-arch");
-            args.push_back("i386");
-        }
-        else if (strncmp(targetTriple.c_str(), "x86_64-apple-", 13) == 0) {
-            args.push_back("-arch");
-            args.push_back("x86_64");
-        }
-        else if (strncmp(targetTriple.c_str(), "powerpc-apple-", 14) == 0) {
-            args.push_back("-arch");
-            args.push_back("ppc");
-        }
-        else if (strncmp(targetTriple.c_str(), "powerpc64-apple-", 16) == 0) {
-            args.push_back("-arch");
-            args.push_back("ppc64");
-        }
-        else if (strncmp(targetTriple.c_str(), "arm-apple-", 10) == 0) {
-            args.push_back("-arch");
-            args.push_back("arm");
-        }
-        else if ((strncmp(targetTriple.c_str(), "armv4t-apple-", 13) == 0) ||
-                 (strncmp(targetTriple.c_str(), "thumbv4t-apple-", 15) == 0)) {
-            args.push_back("-arch");
-            args.push_back("armv4t");
-        }
-        else if ((strncmp(targetTriple.c_str(), "armv5-apple-", 12) == 0) ||
-                 (strncmp(targetTriple.c_str(), "armv5e-apple-", 13) == 0) ||
-                 (strncmp(targetTriple.c_str(), "thumbv5-apple-", 14) == 0) ||
-                 (strncmp(targetTriple.c_str(), "thumbv5e-apple-", 15) == 0)) {
-            args.push_back("-arch");
-            args.push_back("armv5");
-        }
-        else if ((strncmp(targetTriple.c_str(), "armv6-apple-", 12) == 0) ||
-                 (strncmp(targetTriple.c_str(), "thumbv6-apple-", 14) == 0)) {
-            args.push_back("-arch");
-            args.push_back("armv6");
-        }
-        else if ((strncmp(targetTriple.c_str(), "armv7-apple-", 12) == 0) ||
-                 (strncmp(targetTriple.c_str(), "thumbv7-apple-", 14) == 0)) {
+        if (arch != NULL) {
             args.push_back("-arch");
-            args.push_back("armv7");
+            args.push_back(arch);
         }
         // add -static to assembler command line when code model requires
         if ( (_assemblerPath != NULL) && (_codeModel == LTO_CODEGEN_PIC_MODEL_STATIC) )
-- 
2.34.1