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nvc0/ir: SHLADD's middle source must be an immediate 

The instruction encodings only allow for immediates. Don't try to
replace a zero (which is dumb to have in that op in any case) with RZ.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: mesa-stable@lists.freedesktop.org
This commit is contained in:
Ilia Mirkin 2017-05-20 03:11:12 -04:00
parent f0051fcf2b
commit 82e77d4e44
1 changed files with 2 additions and 0 deletions
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2
src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nvc0.cpp
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@ -642,6 +642,8 @@ NVC0LegalizePostRA::replaceZero(Instruction *i)
for (int s = 0; i->srcExists(s); ++s) {
if (s == 2 && i->op == OP_SUCLAMP)
continue;
if (s == 1 && i->op == OP_SHLADD)
continue;
ImmediateValue *imm = i->getSrc(s)->asImm();
if (imm) {
if (i->op == OP_SELP && s == 2) {