glslang SPV tests: Add a set of SPV tests.

git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@31212 e7fa87d3-cd2b-0410-9028-fcbf551c1848

Test/spv.100ops.frag

@@ -0,0 +1,25 @@
+#version 100
+
+lowp float foo();
+
+uniform int low, high;
+
+lowp float face1 = 11.0;
+
+void main()
+{
+    int z = 3;
+
+    if (2 * low + 1 < high)
+        ++z;
+
+    gl_FragColor = face1 * vec4(z) + foo();
+}
+
+lowp float face2 = -2.0;
+
+lowp float foo()
+{
+    // testing if face2 initializer insert logic is correct in main
+    return face2;
+}