Mesa (master): nir/cf: Make a helper function for removing a predecessor.

[Kenneth Graunke]

Module: Mesa
Branch: master
Commit: e2637db618b868682e1c996b3c6394c2e82963f1
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=e2637db618b868682e1c996b3c6394c2e82963f1

Author: Kenneth Graunke <kenneth at whitecape.org>
Date:   Thu Sep  3 00:31:19 2015 -0700

nir/cf: Make a helper function for removing a predecessor.

I need to do this in a second place, and I'd rather make a helper
function than cut and paste the code.

Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
Reviewed-by: Connor Abbott <cwabbott0 at gmail.com>
Reviewed-by: Jason Ekstrand <jason.ekstrand at intel.com>

---

 src/glsl/nir/nir_control_flow.c |   16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/src/glsl/nir/nir_control_flow.c b/src/glsl/nir/nir_control_flow.c
index 768dfd2..43e4e43 100644
--- a/src/glsl/nir/nir_control_flow.c
+++ b/src/glsl/nir/nir_control_flow.c
@@ -60,6 +60,16 @@ block_add_pred(nir_block *block, nir_block *pred)
    _mesa_set_add(block->predecessors, pred);
 }
 
+static inline void
+block_remove_pred(nir_block *block, nir_block *pred)
+{
+   struct set_entry *entry = _mesa_set_search(block->predecessors, pred);
+
+   assert(entry);
+
+   _mesa_set_remove(block->predecessors, entry);
+}
+
 static void
 link_blocks(nir_block *pred, nir_block *succ1, nir_block *succ2)
 {
@@ -83,11 +93,7 @@ unlink_blocks(nir_block *pred, nir_block *succ)
       pred->successors[1] = NULL;
    }
 
-   struct set_entry *entry = _mesa_set_search(succ->predecessors, pred);
-
-   assert(entry);
-
-   _mesa_set_remove(succ->predecessors, entry);
+   block_remove_pred(succ, pred);
 }
 
 static void