Mesa (master): spirv: Silence compiler warning about undefined srcs[0]

[Eric Anholt]

Module: Mesa
Branch: master
Commit: 191bc7ce61660c1a4b8de97fe276c75fdc9d464f
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=191bc7ce61660c1a4b8de97fe276c75fdc9d464f

Author: Eric Anholt <eric at anholt.net>
Date:   Tue Feb 20 20:28:09 2018 -0800

spirv: Silence compiler warning about undefined srcs[0]

v2: Use assume() at the srcs[] definition instead.

Reviewed-by: Ian Romanick <ian.d.romanick at intel.com>

---

 src/compiler/spirv/spirv_to_nir.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/compiler/spirv/spirv_to_nir.c b/src/compiler/spirv/spirv_to_nir.c
index 6a358c5973..3de45c4737 100644
--- a/src/compiler/spirv/spirv_to_nir.c
+++ b/src/compiler/spirv/spirv_to_nir.c
@@ -2925,6 +2925,7 @@ vtn_handle_composite(struct vtn_builder *b, SpvOp opcode,
 
    case SpvOpCompositeConstruct: {
       unsigned elems = count - 3;
+      assume(elems >= 1);
       if (glsl_type_is_vector_or_scalar(type)) {
          nir_ssa_def *srcs[4];
          for (unsigned i = 0; i < elems; i++)