Mesa (master): nir/lower_indirect: Bail early if modes == 0

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Module: Mesa
Branch: master
Commit: 7f75cf2a9408b9af562e033ef6c1d1fd15141421
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=7f75cf2a9408b9af562e033ef6c1d1fd15141421

Author: Jason Ekstrand <jason.ekstrand at intel.com>
Date:   Sat Oct 28 09:05:01 2017 -0700

nir/lower_indirect: Bail early if modes == 0

There's no point in walking the program if we're never going to actually
lower anything.

Reviewed-by: Timothy Arceri <tarceri at itsqueeze.com>

---

 src/compiler/nir/nir_lower_indirect_derefs.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/compiler/nir/nir_lower_indirect_derefs.c b/src/compiler/nir/nir_lower_indirect_derefs.c
index d85c170422..c1f3cf8682 100644
--- a/src/compiler/nir/nir_lower_indirect_derefs.c
+++ b/src/compiler/nir/nir_lower_indirect_derefs.c
@@ -205,6 +205,9 @@ nir_lower_indirect_derefs(nir_shader *shader, nir_variable_mode modes)
 {
    bool progress = false;
 
+   if (modes == 0)
+      return false;
+
    nir_foreach_function(function, shader) {
       if (function->impl)
          progress = lower_indirects_impl(function->impl, modes) || progress;