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nvc0/ir: set ftz when sources are floats, not just destinations

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In the case of a compare, the destination might be a predicate, but we
still want to flush denorms.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: "10.5 10.6" <mesa-stable@lists.freedesktop.org>
(cherry picked from commit d1eea18a59)
This commit is contained in:
Ilia Mirkin 2015-05-22 16:40:08 -04:00 • committed by Emil Velikov
parent 90644f9217
commit 45986bd391
1 changed files with 2 additions and 3 deletions
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5
src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nvc0.cpp
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@ -100,8 +100,7 @@ void
NVC0LegalizeSSA::handleFTZ(Instruction *i)
{
// Only want to flush float inputs
if (i->sType != TYPE_F32)
return;
assert(i->sType == TYPE_F32);
// If we're already flushing denorms (and NaN's) to zero, no need for this.
if (i->dnz)
@ -129,7 +128,7 @@ NVC0LegalizeSSA::visit(BasicBlock *bb)
Instruction *next;
for (Instruction *i = bb->getEntry(); i; i = next) {
next = i->next;
if (i->dType == TYPE_F32) {
if (i->sType == TYPE_F32) {
if (prog->getType() != Program::TYPE_COMPUTE)
handleFTZ(i);
continue;