add an option to generate completely non-pic code, corresponding to what

gcc -static produces on PPC.  This is used for building kexts and other things.

With this, materializing the address of a global looks like:

        lis r2, ha16(L_H$non_lazy_ptr)
        la r3, lo16(L_H$non_lazy_ptr)(r2)

we're still emitting stubs for functions, which is wrong.  That is next.

llvm-svn: 24399

1 files changed, 6 insertions, 0 deletions

diff --git a/llvm/lib/Target/PowerPC/PPCSubtarget.cpp b/llvm/lib/Target/PowerPC/PPCSubtarget.cpp
index 442017d..f43c18d 100644
--- a/llvm/lib/Target/PowerPC/PPCSubtarget.cpp
+++ b/llvm/lib/Target/PowerPC/PPCSubtarget.cpp
@@ -19,6 +19,7 @@
 
 using namespace llvm;
 PPCTargetEnum llvm::PPCTarget = TargetDefault;
+bool llvm::PPCGenerateStaticCode = false;
 
 namespace llvm {
   cl::opt<PPCTargetEnum, true>
@@ -29,6 +30,11 @@ namespace llvm {
                                      "  Enable Darwin codegen"),
                           clEnumValEnd),
                cl::location(PPCTarget), cl::init(TargetDefault));
+  
+  cl::opt<bool, true>
+  PPCStaticCode("ppc-static",
+                cl::desc("PowerPC: generate completely non-pic code"),
+                cl::location(PPCGenerateStaticCode));
 } 
  
 #if defined(__APPLE__)