From: Ben Skeggs <bskeggs@redhat.com>
Date: Sat, 6 Jun 2020 23:52:06 +0000 (+1000)
Subject: nvir/nir: implement nir_op_extract_u8
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=da390389d094d82e405003fdacaf9ee9cc8e74fe;p=mesa.git

nvir/nir: implement nir_op_extract_u8

v2:
- use getSSA() instead of getScratch()
v3:
- fix whitespace

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Karol Herbst <kherbst@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5377>
---

diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_from_nir.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_from_nir.cpp
index cf01622ebbf..f4654dcb541 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_from_nir.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_from_nir.cpp
@@ -2810,6 +2810,14 @@ Converter::visit(nir_alu_instr *insn)
       mkOp1(OP_BFIND, TYPE_U32, newDefs[0], tmp)->subOp = NV50_IR_SUBOP_BFIND_SAMT;
       break;
    }
+   case nir_op_extract_u8: {
+      DEFAULT_CHECKS;
+      LValues &newDefs = convert(&insn->dest);
+      Value *prmt = getSSA();
+      mkOp2(OP_OR, TYPE_U32, prmt, getSrc(&insn->src[1]), loadImm(NULL, 0x4440));
+      mkOp3(OP_PERMT, TYPE_U32, newDefs[0], getSrc(&insn->src[0]), prmt, loadImm(NULL, 0));
+      break;
+   }
    // boolean conversions
    case nir_op_b2f32: {
       DEFAULT_CHECKS;