added compilation script for ptx

ptxtest/test.ispc

@@ -1,12 +0,0 @@
-export void saxpy(const uniform float a, const uniform float x_[], const uniform float y_[], uniform float z_[], const uniform int n)
-{
-  foreach (i = 0 ... n)
-  {
-     const double x = x_[i];
-     const double y = y_[i];
-     const double dz = y + a*x;
-     const double dz1 = 1.0/sqrt(dz);
-     const float z = dz1;
-     z_[i] = rsqrt(z);
-  }
-}

ptxtestcc.sh

@@ -0,0 +1,6 @@
+#!/bin/sh
+LLC=$HOME/usr/local/llvm/bin-trunk/bin/llc
+ISPC=ispc
+PTXCC=ptxcc
+$(cat $1 |grep -v 'width'|$ISPC --target=nvptx --emit-llvm -o -|$LLC -march=nvptx64 -mcpu=sm_35 -o $1.ptx)
+$($PTXCC $1.ptx  -Xptxas=-v -o $1.ptx.o)