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nv50/ir: the mad source might not have a defining instruction

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For example if it's $r63 (aka 0), there won't be a definition.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: "11.0 11.1" <mesa-stable@lists.freedesktop.org>
This commit is contained in:
Ilia Mirkin 2015-12-02 20:10:54 -05:00
parent 52b68375ae
commit 11fcf46590
1 changed files with 1 additions and 1 deletions
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2
src/gallium/drivers/nouveau/codegen/nv50_ir_peephole.cpp
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@ -2660,7 +2660,7 @@ NV50PostRaConstantFolding::visit(BasicBlock *bb)
break;
def = i->getSrc(1)->getInsn();
if (def->op == OP_MOV && def->src(0).getFile() == FILE_IMMEDIATE) {
if (def && def->op == OP_MOV && def->src(0).getFile() == FILE_IMMEDIATE) {
vtmp = i->getSrc(1);
i->setSrc(1, def->getSrc(0));