Mesa (main): lima: Lower nir_op_idiv with other scalar math operations.

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Module: Mesa
Branch: main
Commit: 5ec0301ec7701c3fe9b1df36430d58e0b57fbfa3
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=5ec0301ec7701c3fe9b1df36430d58e0b57fbfa3

Author: Vasily Khoruzhick <anarsoul at gmail.com>
Date:   Mon Jun  6 14:43:43 2022 -0700

lima: Lower nir_op_idiv with other scalar math operations.

This will end up appearing in the backend once we move GLSL's
idiv->fmul+frcp lowering to NIR.

Reviewed-by: Emma Anholt <emma at anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16823>

---

 src/gallium/drivers/lima/lima_program.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/gallium/drivers/lima/lima_program.c b/src/gallium/drivers/lima/lima_program.c
index 4a975f726fb..8ce554d194a 100644
--- a/src/gallium/drivers/lima/lima_program.c
+++ b/src/gallium/drivers/lima/lima_program.c
@@ -166,6 +166,10 @@ lima_alu_to_scalar_filter_cb(const nir_instr *instr, const void *data)
    nir_alu_instr *alu = nir_instr_as_alu(instr);
    switch (alu->op) {
    case nir_op_frcp:
+   /* nir_op_idiv is lowered to frcp by lower_int_to_floats which
+    * will be run later, so lower idiv here
+    */
+   case nir_op_idiv:
    case nir_op_frsq:
    case nir_op_flog2:
    case nir_op_fexp2: