From 315a7365a88d66ab608a9021c2e679604a5ad588 Mon Sep 17 00:00:00 2001
From: fincs <fincs@devkitpro.org>
Date: Wed, 22 Jan 2020 16:30:43 +0100
Subject: [PATCH] {mesa 3e468ff2 cherrypick} nv50/ir: handle insn not being
 there for definition of CVT arg

This can happen if it's e.g. a uniform or a function argument.
---
 mesa-imported/codegen/nv50_ir_peephole.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/mesa-imported/codegen/nv50_ir_peephole.cpp b/mesa-imported/codegen/nv50_ir_peephole.cpp
index ac61c27..fe22c7c 100644
--- a/mesa-imported/codegen/nv50_ir_peephole.cpp
+++ b/mesa-imported/codegen/nv50_ir_peephole.cpp
@@ -2080,14 +2080,15 @@ void
 AlgebraicOpt::handleCVT_CVT(Instruction *cvt)
 {
    Instruction *insn = cvt->getSrc(0)->getInsn();
-   RoundMode rnd = insn->rnd;
 
-   if (insn->saturate ||
+   if (!insn ||
+       insn->saturate ||
        insn->subOp ||
        insn->dType != insn->sType ||
        insn->dType != cvt->sType)
       return;
 
+   RoundMode rnd = insn->rnd;
    switch (insn->op) {
    case OP_CEIL:
       rnd = ROUND_PI;