Mesa (master): nvc0/ir: Fix assert accessing null pointer

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Module: Mesa
Branch: master
Commit: 7493fbf032f5bcbf4c48187bc089c9a34f04a1d5
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=7493fbf032f5bcbf4c48187bc089c9a34f04a1d5

Author: Mark Menzynski <mmenzyns at redhat.com>
Date:   Fri Jul 19 13:09:02 2019 +0200

nvc0/ir: Fix assert accessing null pointer

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111007
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111167

Signed-off-by: Mark Menzynski <mmenzyns at redhat.com>
Reviewed-by: Ilia Mirkin <imirkin at alum.mit.edu>
Reviewed-by: Tobias Klausmann<tobias.klausmann at freenet.de>

---

 src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nvc0.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nvc0.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nvc0.cpp
index aca3b0afb1e..1f702a987d8 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nvc0.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nvc0.cpp
@@ -51,12 +51,12 @@ NVC0LegalizeSSA::handleDIV(Instruction *i)
    // Generate movs to the input regs for the call we want to generate
    for (int s = 0; i->srcExists(s); ++s) {
       Instruction *ld = i->getSrc(s)->getInsn();
-      assert(ld->getSrc(0) != NULL);
       // check if we are moving an immediate, propagate it in that case
       if (!ld || ld->fixed || (ld->op != OP_LOAD && ld->op != OP_MOV) ||
             !(ld->src(0).getFile() == FILE_IMMEDIATE))
          bld.mkMovToReg(s, i->getSrc(s));
       else {
+         assert(ld->getSrc(0) != NULL);
          bld.mkMovToReg(s, ld->getSrc(0));
          // Clear the src, to make code elimination possible here before we
          // delete the instruction i later