commit 4e2567d6b1d9d046ca98aa3ab6a6b06ea5ea398b
author Eli Friedman <eli.friedman@gmail.com> Wed Jun 03 18:59:56 2009 +0000
committer Eli Friedman <eli.friedman@gmail.com> Wed Jun 03 18:59:56 2009 +0000
tree 89d893f37fd4eb71bc9993f8c984d8a1b853c4a3
parent e8b5578fcc2a3ffb90986f95f2c9127a9a08e34b

PR4308: Fix support for -m32/-m64 on Linux.

I'll look into cleaning this up a bit as a followup.



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@72794 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Driver/HostInfo.cpp

diff --git a/lib/Driver/HostInfo.cpp b/lib/Driver/HostInfo.cpp
index 603b3ab..2d577f8 100644
--- a/lib/Driver/HostInfo.cpp
+++ b/lib/Driver/HostInfo.cpp
@@ -194,11 +194,13 @@
   std::string Arch = getArchName();
   ArchName = Arch.c_str();
   if (Arg *A = Args.getLastArg(options::OPT_m32, options::OPT_m64)) {
-    if (getArchName() == "i386" || getArchName() == "x86_64") {
-      ArchName = 
+    if (Triple.getArch() == llvm::Triple::x86 ||
+        Triple.getArch() == llvm::Triple::x86_64) {
+      ArchName =
         (A->getOption().getId() == options::OPT_m32) ? "i386" : "x86_64";
-    } else if (getArchName() == "powerpc" || getArchName() == "powerpc64") {
-      ArchName = 
+    } else if (Triple.getArch() == llvm::Triple::ppc ||
+               Triple.getArch() == llvm::Triple::ppc64) {
+      ArchName =
         (A->getOption().getId() == options::OPT_m32) ? "powerpc" : "powerpc64";
     }
   } 
@@ -361,13 +363,26 @@
   assert(!ArchName && 
          "Unexpected arch name on platform without driver driver support.");
 
-  ArchName = getArchName().c_str();
-  
+  // Automatically handle some instances of -m32/-m64 we know about.
+  std::string Arch = getArchName();
+  ArchName = Arch.c_str();
+  if (Arg *A = Args.getLastArg(options::OPT_m32, options::OPT_m64)) {
+    if (Triple.getArch() == llvm::Triple::x86 ||
+        Triple.getArch() == llvm::Triple::x86_64) {
+      ArchName =
+        (A->getOption().getId() == options::OPT_m32) ? "i386" : "x86_64";
+    } else if (Triple.getArch() == llvm::Triple::ppc ||
+               Triple.getArch() == llvm::Triple::ppc64) {
+      ArchName =
+        (A->getOption().getId() == options::OPT_m32) ? "powerpc" : "powerpc64";
+    }
+  }
+
   ToolChain *&TC = ToolChains[ArchName];
 
   if (!TC) {
     llvm::Triple TCTriple(getTriple());
-    TCTriple.setArchName(getArchName());
+    TCTriple.setArchName(ArchName);
 
     TC = new toolchains::Linux(*this, TCTriple);
   }