Mesa (master): nir: Add a helper for getting the current block from a cursor

[Jason Ekstrand]

Module: Mesa
Branch: master
Commit: 35e2e96b307bcd6dd839a11e2bd98fa22bd4d50a
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=35e2e96b307bcd6dd839a11e2bd98fa22bd4d50a

Author: Jason Ekstrand <jason.ekstrand at intel.com>
Date:   Fri Mar 25 14:16:47 2016 -0700

nir: Add a helper for getting the current block from a cursor

Reviewed-by: Rob Clark <robdclark at gmail.com>

---

 src/compiler/nir/nir.h | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/compiler/nir/nir.h b/src/compiler/nir/nir.h
index d5c6a05..c19ae59 100644
--- a/src/compiler/nir/nir.h
+++ b/src/compiler/nir/nir.h
@@ -1881,6 +1881,17 @@ typedef struct {
    };
 } nir_cursor;
 
+static inline nir_block *
+nir_cursor_current_block(nir_cursor cursor)
+{
+   if (cursor.option == nir_cursor_before_instr ||
+       cursor.option == nir_cursor_after_instr) {
+      return cursor.instr->block;
+   } else {
+      return cursor.block;
+   }
+}
+
 bool nir_cursors_equal(nir_cursor a, nir_cursor b);
 
 static inline nir_cursor