Add LTO in configure, add more benchmarks

bench/tests/BenchLine.c

@@ -0,0 +1,55 @@
+#include "BH/Bench.h"
+#include "BH/Math/Line.h"
+
+
+static float pointA[2] = {1.0f, 2.0f};
+static float pointB[2] = {4.0f, 6.0f};
+static float lineNormal[3] = {3.0f, -4.0f, 5.0f};
+static float outLine[3];
+static float outPoint[2];
+
+
+BH_BENCH_TEST(FromPoints)
+{
+    while (BH_BenchIter(state))
+    {
+        int result;
+        result = BH_LineFromPoints(pointA, pointB, outLine);
+        BH_BenchDoNotOptimize(result);
+        BH_BenchDoNotOptimize(outLine);
+    }
+}
+
+
+BH_BENCH_TEST(Distance)
+{
+    while (BH_BenchIter(state))
+    {
+        float result;
+        result = BH_LineDistance(lineNormal, pointA);
+        BH_BenchDoNotOptimize(result);
+    }
+}
+
+
+BH_BENCH_TEST(ClosestPoint)
+{
+    while (BH_BenchIter(state))
+    {
+        BH_LineClosestPoint(lineNormal, pointA, outPoint);
+        BH_BenchDoNotOptimize(outPoint);
+    }
+}
+
+
+int main(int argc, char **argv)
+{
+    BH_UNUSED(argc);
+    BH_UNUSED(argv);
+
+    BH_BENCH_ADD(FromPoints);
+    BH_BENCH_ADD(Distance);
+    BH_BENCH_ADD(ClosestPoint);
+
+    return BH_BenchRun();
+}