added kernel only compilation feature for hipcc

1. Added hipgenisa.sh file to compile kernel code to hsa code object
2. Changed hipcc to call hipgenisa.sh, making hipcc compiling the kernels

Change-Id: I976459c1ebb24343e1b1fe38b4c3a203f1adffa9

hipamd/bin/hipcc

@@ -157,6 +157,16 @@ if ($HIP_PLATFORM eq "hcc") {
     exit (-1);
 }
 
+my $ISACMD="hipgenisa.sh ";
+$ISACMD .= $ROCM_PATH;
+if($ARGV[0] eq "--genisa"){
+  foreach $isaarg (@ARGV){
+    $ISACMD .= " ";
+    $ISACMD .= $isaarg;
+  }
+  system($ISACMD);
+  exit(-1);
+}
 
 # Add paths to common HIP includes:
 $HIPCXXFLAGS .= " -I$HIP_PATH/include" ;
@@ -178,6 +188,7 @@ if ($verbose & 0x4) {
 }
 
 my $toolArgs = "";  # arguments to pass to the hcc or nvcc tool
+
 foreach $arg (@ARGV)
 {
     my $swallowArg = 0;

hipamd/bin/hipgenisa.sh

@@ -0,0 +1,26 @@
+#!/bin/bash
+
+if [ $1 = " " ]
+then
+exit
+fi
+
+ROCM_PATH=$1
+GEN_ISA=$3
+FILE_NAMES=$4
+OUT=$5
+OUTPUT_FILE=$6
+TARGET=""
+if [ ${GEN_ISA:0:12} = "--target-isa" ]
+then
+  TARGET=${GEN_ISA:13:12}
+fi
+
+export KMDUMPISA=1
+export KMDUMPLLVM=1
+hipcc $FILE_NAMES -o /tmp/hipgenisa/a.out
+mv dump.* /tmp/hipgenisa/
+${ROCM_PATH}/hcc-lc/bin/llvm-mc -arch=amdgcn -mcpu=$TARGET -filetype=obj /tmp/hipgenisa/dump.isa -o /tmp/hipgenisa/dump.o
+${ROCM_PATH}/llvm/bin/clang -target amdgcn--amdhsa /tmp/hipgenisa/dump.o -o $OUTPUT_FILE
+export KMDUMPISA=0
+export KMDUMPLLVM=0