Add 64-bit addressing to PTX backend

- Add '64bit' sub-target option.
- Select 32-bit/64-bit loads/stores based on '64bit' option.
- Fix function parameter order.

Patch by Justin Holewinski

llvm-svn: 126837

1 files changed, 5 insertions, 0 deletions

diff --git a/llvm/lib/Target/PTX/PTXSubtarget.h b/llvm/lib/Target/PTX/PTXSubtarget.h
index 9a9ada2af6d..23aa3a349f9 100644
--- a/llvm/lib/Target/PTX/PTXSubtarget.h
+++ b/llvm/lib/Target/PTX/PTXSubtarget.h
@@ -40,6 +40,9 @@ namespace llvm {
       // The native .f64 type is supported on the hardware.
       bool SupportsDouble;
 
+      // Use .u64 instead of .u32 for addresses.
+      bool Use64BitAddresses;
+
     public:
       PTXSubtarget(const std::string &TT, const std::string &FS);
 
@@ -49,6 +52,8 @@ namespace llvm {
 
       bool supportsDouble() const { return SupportsDouble; }
 
+      bool use64BitAddresses() const { return Use64BitAddresses; }
+
       std::string ParseSubtargetFeatures(const std::string &FS,
                                          const std::string &CPU);
   }; // class PTXSubtarget