bypass comparison of uint with zero if dipt is 1

elstehle · elstehle · commit 341eabc33ad0 · 2023-10-26T13:07:54.000-07:00
diff --git a/cub/cub/block/block_run_length_decode.cuh b/cub/cub/block/block_run_length_decode.cuh
@@ -382,7 +382,8 @@ public:
     {
       decoded_items[i] = val;
       item_offsets[i]  = thread_decoded_offset - assigned_run_begin;
-      if ((i == DECODED_ITEMS_PER_THREAD - 1) && (thread_decoded_offset == assigned_run_end - 1))
+      if ((DECODED_ITEMS_PER_THREAD > 1 && i < DECODED_ITEMS_PER_THREAD - 1)
+          && (thread_decoded_offset == assigned_run_end - 1))
       {
         // We make sure that a thread is not re-entering this conditional when being assigned to the last run already by
         // extending the last run's length to all the thread's item

Original file line number	Diff line number	Diff line change
`@@ -382,7 +382,8 @@ public:`
`382`	`382`	`{`
`383`	`383`	`decoded_items[i] = val;`
`384`	`384`	`item_offsets[i] = thread_decoded_offset - assigned_run_begin;`
`385`		`- if ((i == DECODED_ITEMS_PER_THREAD - 1) && (thread_decoded_offset == assigned_run_end - 1))`
	`385`	`+ if ((DECODED_ITEMS_PER_THREAD > 1 && i < DECODED_ITEMS_PER_THREAD - 1)`
	`386`	`+ && (thread_decoded_offset == assigned_run_end - 1))`
`386`	`387`	`{`
`387`	`388`	`// We make sure that a thread is not re-entering this conditional when being assigned to the last run already by`
`388`	`389`	`// extending the last run's length to all the thread's item`