Mesa (master): Revert "nir: Turn imov/fmov of undef into undef."

[Timothy Arceri]

Module: Mesa
Branch: master
Commit: a5502a721fd30fde4f5dc71421494329052f805b
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=a5502a721fd30fde4f5dc71421494329052f805b

Author: Timothy Arceri <timothy.arceri at collabora.com>
Date:   Thu Dec 15 16:51:13 2016 +1100

Revert "nir: Turn imov/fmov of undef into undef."

This reverts commit 6aa730000fea84a14b49828a4bb30761d43903bf.

This was changing the size of the undef to always be 1 (the number of inputs
to imov and fmov) which is wrong, we could be moving a vec4 for example.

Acked-by: Kenneth Graunke <kenneth at whitecape.org>
Cc: "13.0" <mesa-stable at lists.freedesktop.org>

---

 src/compiler/nir/nir_opt_undef.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/src/compiler/nir/nir_opt_undef.c b/src/compiler/nir/nir_opt_undef.c
index 0f8ba31..c4777a8 100644
--- a/src/compiler/nir/nir_opt_undef.c
+++ b/src/compiler/nir/nir_opt_undef.c
@@ -79,9 +79,7 @@ opt_undef_vecN(nir_builder *b, nir_alu_instr *alu)
 {
    if (alu->op != nir_op_vec2 &&
        alu->op != nir_op_vec3 &&
-       alu->op != nir_op_vec4 &&
-       alu->op != nir_op_fmov &&
-       alu->op != nir_op_imov)
+       alu->op != nir_op_vec4)
       return false;
 
    assert(alu->dest.dest.is_ssa);