From 214afe96b4210ca36d99621dd930225e6bf5b9b3 Mon Sep 17 00:00:00 2001
From: Daniel Dunbar <daniel@zuster.org>
Date: Mon, 2 Aug 2010 05:43:59 +0000
Subject: [PATCH] Driver/FreeBSD: Change how FreeBSD derives the Lib32
 variable, to normalize tool chain construction.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@110025 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Driver/HostInfo.cpp   | 11 +----------
 lib/Driver/ToolChains.cpp | 10 +++++++++-
 lib/Driver/ToolChains.h   |  2 +-
 3 files changed, 11 insertions(+), 12 deletions(-)

diff --git a/lib/Driver/HostInfo.cpp b/lib/Driver/HostInfo.cpp
index a8fdec8a10..60b9695482 100644
--- a/lib/Driver/HostInfo.cpp
+++ b/lib/Driver/HostInfo.cpp
@@ -363,27 +363,18 @@ bool FreeBSDHostInfo::useDriverDriver() const {
 
 ToolChain *FreeBSDHostInfo::CreateToolChain(const ArgList &Args,
                                             const char *ArchName) const {
-  bool Lib32 = false;
-
   assert(!ArchName &&
          "Unexpected arch name on platform without driver driver support.");
 
-  // On x86_64 we need to be able to compile 32-bits binaries as well.
-  // Compiling 64-bit binaries on i386 is not supported. We don't have a
-  // lib64.
   std::string Arch = getArchName();
   ArchName = Arch.c_str();
-  if (Args.hasArg(options::OPT_m32) && getArchName() == "x86_64") {
-    ArchName = "i386";
-    Lib32 = true;
-  }
 
   ToolChain *&TC = ToolChains[ArchName];
   if (!TC) {
     llvm::Triple TCTriple(getTriple());
     TCTriple.setArchName(ArchName);
 
-    TC = new toolchains::FreeBSD(*this, TCTriple, Lib32);
+    TC = new toolchains::FreeBSD(*this, TCTriple);
   }
 
   return TC;
diff --git a/lib/Driver/ToolChains.cpp b/lib/Driver/ToolChains.cpp
index bdccc3e3da..5a4ad6023c 100644
--- a/lib/Driver/ToolChains.cpp
+++ b/lib/Driver/ToolChains.cpp
@@ -889,8 +889,16 @@ Tool &OpenBSD::SelectTool(const Compilation &C, const JobAction &JA) const {
 
 /// FreeBSD - FreeBSD tool chain which can call as(1) and ld(1) directly.
 
-FreeBSD::FreeBSD(const HostInfo &Host, const llvm::Triple& Triple, bool Lib32)
+FreeBSD::FreeBSD(const HostInfo &Host, const llvm::Triple& Triple)
   : Generic_GCC(Host, Triple) {
+
+  // Determine if we are compiling 32-bit code on an x86_64 platform.
+  bool Lib32 = false;
+  if (Triple.getArch() == llvm::Triple::x86 &&
+      llvm::Triple(getDriver().DefaultHostTriple).getArch() ==
+        llvm::Triple::x86_64)
+    Lib32 = true;
+    
   getProgramPaths().push_back(getDriver().Dir + "/../libexec");
   getProgramPaths().push_back("/usr/libexec");
   if (Lib32) {
diff --git a/lib/Driver/ToolChains.h b/lib/Driver/ToolChains.h
index 06d4fff4e7..dfc18fe2b2 100644
--- a/lib/Driver/ToolChains.h
+++ b/lib/Driver/ToolChains.h
@@ -269,7 +269,7 @@ public:
 
 class LLVM_LIBRARY_VISIBILITY FreeBSD : public Generic_GCC {
 public:
-  FreeBSD(const HostInfo &Host, const llvm::Triple& Triple, bool Lib32);
+  FreeBSD(const HostInfo &Host, const llvm::Triple& Triple);
 
   virtual Tool &SelectTool(const Compilation &C, const JobAction &JA) const;
 };
-- 
2.40.0