Add support for "new" and "delete" to the language.

Issue #139.

tests/new-delete-1.ispc

@@ -0,0 +1,15 @@
+
+export uniform int width() { return programCount; }
+
+export void f_fu(uniform float RET[], uniform float aFOO[], uniform float b) {
+    float a = aFOO[programIndex]; 
+    float * uniform buf = uniform new float[programCount];
+    for (uniform int i = 0; i < programCount; ++i)
+        buf[i] = i;
+    RET[programIndex] = buf[a-1];
+    delete buf;
+}
+
+export void result(uniform float RET[]) {
+    RET[programIndex] = programIndex;
+}

tests/new-delete-2.ispc

@@ -0,0 +1,15 @@
+
+export uniform int width() { return programCount; }
+
+export void f_fu(uniform float RET[], uniform float aFOO[], uniform float b) {
+    float a = aFOO[programIndex]; 
+    uniform float * uniform buf = uniform new uniform float[programCount];
+    for (uniform int i = 0; i < programCount; ++i)
+        buf[i] = i;
+    RET[programIndex] = buf[a-1];
+    delete buf;
+}
+
+export void result(uniform float RET[]) {
+    RET[programIndex] = programIndex;
+}

tests/new-delete-3.ispc

@@ -0,0 +1,17 @@
+
+export uniform int width() { return programCount; }
+
+
+export void f_fu(uniform float RET[], uniform float aFOO[], uniform float b) {
+    float a = aFOO[programIndex]; 
+    float * uniform buf = uniform new float[programCount+1];
+    for (uniform int i = 0; i < programCount+1; ++i) {
+        buf[i] = i+a;
+    }
+    RET[programIndex] = buf[a];
+    delete buf;
+}
+
+export void result(uniform float RET[]) {
+    RET[programIndex] = 2 + 2*programIndex;
+}

tests/new-delete-4.ispc

@@ -0,0 +1,14 @@
+
+export uniform int width() { return programCount; }
+
+
+export void f_fu(uniform float RET[], uniform float aFOO[], uniform float b) {
+    float a = aFOO[programIndex]; 
+    float * uniform buf = uniform new float(2*b);
+    RET[programIndex] = buf[0];
+    delete[] buf;
+}
+
+export void result(uniform float RET[]) {
+    RET[programIndex] = 10;
+}

tests/new-delete-5.ispc

@@ -0,0 +1,17 @@
+
+export uniform int width() { return programCount; }
+
+struct Point {
+    uniform float x, y, z;
+};
+
+export void f_fu(uniform float RET[], uniform float aFOO[], uniform float b) {
+    float a = aFOO[programIndex]; 
+    varying Point * uniform buf = uniform new varying Point(a, b, 1234.);
+    RET[programIndex] = buf->y;
+    delete buf;
+}
+
+export void result(uniform float RET[]) {
+    RET[programIndex] = 5;
+}

tests/new-delete-6.ispc

@@ -0,0 +1,17 @@
+
+export uniform int width() { return programCount; }
+
+struct Point {
+    float x, y, z;
+};
+
+export void f_fu(uniform float RET[], uniform float aFOO[], uniform float b) {
+    float a = aFOO[programIndex]; 
+    Point * varying buf = new Point(0., b, a);
+    RET[programIndex] = buf->z;
+    delete buf;
+}
+
+export void result(uniform float RET[]) {
+    RET[programIndex] = 1+programIndex;
+}