Merge branch 'approx_hpvm' of gitlab.engr.illinois.edu:llvm/hpvm into approx_hpvm

llvm/projects/gpu_profiler/.gitignore

+*.swp
+jetsonTX2Power
+pp

llvm/projects/gpu_profiler/Makefile

+all:
+	g++ -std=c++11 -O3 profiler.cpp -o pp -lpthread
+
+clean:
+	rm -rf pp

llvm/projects/gpu_profiler/plot.sh

+#!/bin/sh
+input=$1
+gnuplot -p << EOF
+    #set terminal png
+    #set output "$input.png"
+    set xlabel "Time (s)"
+    set ylabel "Power (mW)"
+    set title "Power usage of GPU and DDR over time"
+    plot "$input" using 1:2 title 'GPU' with lines,"$input" using 1:3 title 'DDR' with lines
+EOF