Add support for "switch" statements.

Switches with both uniform and varying "switch" expressions are supported. Switch statements with varying expressions and very large numbers of labels may not perform well; some issues to be filed shortly will track opportunities for improving these.
2012-01-11 09:15:05 -08:00
parent 9670ab0887
commit b67446d998
26 changed files with 1402 additions and 92 deletions
--- a/ispc.h
+++ b/ispc.h
@@ -437,6 +437,8 @@ enum {
    COST_VARYING_IF = 3,
    COST_UNIFORM_LOOP = 4,
    COST_VARYING_LOOP = 6,
+    COST_UNIFORM_SWITCH = 4,
+    COST_VARYING_SWITCH = 12,
    COST_ASSERT = 8,

    CHECK_MASK_AT_FUNCTION_START_COST = 16,