This patch adds a new NVPTX back-end to LLVM which supports code generation for NVIDIA PTX 3.0. This back-end will (eventually) replace the current PTX back-end, while maintaining compatibility with it.

The new target machines are:

nvptx (old ptx32) => 32-bit PTX
nvptx64 (old ptx64) => 64-bit PTX

The sources are based on the internal NVIDIA NVPTX back-end, and
contain more functionality than the current PTX back-end currently
provides.

NV_CONTRIB

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156196 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/projects/sample/configure b/projects/sample/configure
index 7c5e2ee..51bb097 100755
--- a/projects/sample/configure
+++ b/projects/sample/configure
@@ -1402,7 +1402,8 @@
   --enable-targets        Build specific host targets: all or
                           target1,target2,... Valid targets are: host, x86,
                           x86_64, sparc, powerpc, arm, mips, spu, hexagon,
-                          xcore, msp430, ptx, cbe, and cpp (default=all)
+                          xcore, msp430, ptx, nvptx, cbe, and cpp
+                          (default=all)
   --enable-bindings       Build specific language bindings:
                           all,auto,none,{binding-name} (default=auto)
   --enable-libffi         Check for the presence of libffi (default is NO)
@@ -3846,6 +3847,7 @@
   hexagon-*)              llvm_cv_target_arch="Hexagon" ;;
   mblaze-*)               llvm_cv_target_arch="MBlaze" ;;
   ptx-*)                  llvm_cv_target_arch="PTX" ;;
+  nvptx-*)                llvm_cv_target_arch="NVPTX" ;;
   *)                      llvm_cv_target_arch="Unknown" ;;
 esac
 fi
@@ -5070,6 +5072,8 @@
  ;;
     PTX)         TARGET_HAS_JIT=0
  ;;
+    NVPTX)       TARGET_HAS_JIT=0
+ ;;
     *)           TARGET_HAS_JIT=0
  ;;
   esac
@@ -5254,7 +5258,7 @@
   enableval=host
 fi
 case "$enableval" in
-  all) TARGETS_TO_BUILD="X86 Sparc PowerPC ARM Mips CellSPU XCore MSP430 Hexagon CppBackend MBlaze PTX" ;;
+  all) TARGETS_TO_BUILD="X86 Sparc PowerPC ARM Mips CellSPU XCore MSP430 Hexagon CppBackend MBlaze PTX NVPTX" ;;
   *)for a_target in `echo $enableval|sed -e 's/,/ /g' ` ; do
       case "$a_target" in
         x86)      TARGETS_TO_BUILD="X86 $TARGETS_TO_BUILD" ;;
@@ -5270,6 +5274,7 @@
         cpp)      TARGETS_TO_BUILD="CppBackend $TARGETS_TO_BUILD" ;;
         mblaze)   TARGETS_TO_BUILD="MBlaze $TARGETS_TO_BUILD" ;;
         ptx)      TARGETS_TO_BUILD="PTX $TARGETS_TO_BUILD" ;;
+        nvptx)    TARGETS_TO_BUILD="NVPTX $TARGETS_TO_BUILD" ;;
         host) case "$llvm_cv_target_arch" in
             x86)         TARGETS_TO_BUILD="X86 $TARGETS_TO_BUILD" ;;
             x86_64)      TARGETS_TO_BUILD="X86 $TARGETS_TO_BUILD" ;;
@@ -5283,6 +5288,7 @@
             MSP430)      TARGETS_TO_BUILD="MSP430 $TARGETS_TO_BUILD" ;;
             Hexagon)     TARGETS_TO_BUILD="Hexagon $TARGETS_TO_BUILD" ;;
             PTX)         TARGETS_TO_BUILD="PTX $TARGETS_TO_BUILD" ;;
+            NVPTX)       TARGETS_TO_BUILD="NVPTX $TARGETS_TO_BUILD" ;;
             *)       { { echo "$as_me:$LINENO: error: Can not set target to build" >&5
 echo "$as_me: error: Can not set target to build" >&2;}
    { (exit 1); exit 1; }; } ;;
@@ -10307,7 +10313,7 @@
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<EOF
-#line 10303 "configure"
+#line 10316 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H