nv50/ir: fix quadop emission in the presence of predication

When there's a predicate, it just goes onto the sources list. If the
quadop only has a single regular source, we will end up thinking that
the predicate is the second source. Check explicitly for the predSrc so
that we don't accidentally emit the wrong thing.

This fixes a bunch of dEQP-GLES3.functional.shaders.derivate.* tests.

Signed-off-by: Ilia Mirkin <[email protected]>
Cc: [email protected]

4 files changed, 9 insertions, 5 deletions

diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_gk110.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_gk110.cpp
index 0c7cd1d8137..4bb4e5240e6 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_gk110.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_gk110.cpp
@@ -1239,7 +1239,7 @@ CodeEmitterGK110::emitQUADOP(const Instruction *i, uint8_t qOp, uint8_t laneMask
 
    defId(i->def(0), 2);
    srcId(i->src(0), 10);
-   srcId(i->srcExists(1) ? i->src(1) : i->src(0), 23);
+   srcId((i->srcExists(1) && i->predSrc != 1) ? i->src(1) : i->src(0), 23);
 
    if (i->op == OP_QUADOP && progType != Program::TYPE_FRAGMENT)
       code[1] |= 1 << 9; // dall
diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_gm107.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_gm107.cpp
index 2e14e182422..93c40d15e46 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_gm107.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_gm107.cpp
@@ -1535,7 +1535,10 @@ CodeEmitterGM107::emitFSWZADD()
    emitRND  (0x27);
    emitField(0x26, 1, insn->lanes); /* abused for .ndv */
    emitField(0x1c, 8, insn->subOp);
-   emitGPR  (0x14, insn->src(1));
+   if (insn->predSrc != 1)
+      emitGPR  (0x14, insn->src(1));
+   else
+      emitGPR  (0x14);
    emitGPR  (0x08, insn->src(0));
    emitGPR  (0x00, insn->def(0));
 }
diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_nv50.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_nv50.cpp
index bc8354deba1..682a19d6d78 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_nv50.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_nv50.cpp
@@ -527,7 +527,8 @@ CodeEmitterNV50::emitForm_ADD(const Instruction *i)
 
    setSrcFileBits(i, NV50_OP_ENC_LONG_ALT);
    setSrc(i, 0, 0);
-   setSrc(i, 1, 2);
+   if (i->predSrc != 1)
+      setSrc(i, 1, 2);
 
    if (i->getIndirect(0, 0)) {
       assert(!i->getIndirect(1, 0));
@@ -840,7 +841,7 @@ CodeEmitterNV50::emitQUADOP(const Instruction *i, uint8_t lane, uint8_t quOp)
 
    emitForm_ADD(i);
 
-   if (!i->srcExists(1))
+   if (!i->srcExists(1) || i->predSrc == 1)
       srcId(i->src(0), 32 + 14);
 }
 
diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_nvc0.cpp b/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_nvc0.cpp
index 8637db91521..650044d93f7 100644
--- a/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_nvc0.cpp
+++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_emit_nvc0.cpp
@@ -1334,7 +1334,7 @@ CodeEmitterNVC0::emitQUADOP(const Instruction *i, uint8_t qOp, uint8_t laneMask)
 
    defId(i->def(0), 14);
    srcId(i->src(0), 20);
-   srcId(i->srcExists(1) ? i->src(1) : i->src(0), 26);
+   srcId((i->srcExists(1) && i->predSrc != 1) ? i->src(1) : i->src(0), 26);
 
    if (i->op == OP_QUADOP && progType != Program::TYPE_FRAGMENT)
       code[0] |= 1 << 9; // dall