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

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 d1eea18a595a468dbc2267a8d14197a3b1a5a4b6)

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 4000812..b758c1c 100644 (file)
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nvc0.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nvc0.cpp
@@ -77,8 +77,7 @@ 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)
@@ -106,7 +105,7 @@ 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;