i965/vec4: Return the emitted instruction in emit_minmax()

Needed in the NIR backend to set the "saturate" value of the
instruction.

Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

diff --git a/src/mesa/drivers/dri/i965/brw_vec4.h b/src/mesa/drivers/dri/i965/brw_vec4.h
index 285e2ee..90e5753 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_vec4.h
+++ b/src/mesa/drivers/dri/i965/brw_vec4.h
@@ -291,8 +291,8 @@ public:
    void emit_bool_to_cond_code(ir_rvalue *ir, enum brw_predicate *predicate);
    void emit_if_gen6(ir_if *ir);
 
-   void emit_minmax(enum brw_conditional_mod conditionalmod, dst_reg dst,
-                    src_reg src0, src_reg src1);
+   vec4_instruction *emit_minmax(enum brw_conditional_mod conditionalmod, dst_reg dst,
+                                 src_reg src0, src_reg src1);
 
    void emit_lrp(const dst_reg &dst,
                  const src_reg &x, const src_reg &y, const src_reg &a);

diff --git a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
index fa97931..6865df7 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
+++ b/src/mesa/drivers/dri/i965/brw_vec4_visitor.cpp
@@ -1266,7 +1266,7 @@ vec4_visitor::try_emit_b2f_of_compare(ir_expression *ir)
    return true;
 }
 
-void
+vec4_instruction *
 vec4_visitor::emit_minmax(enum brw_conditional_mod conditionalmod, dst_reg dst,
                           src_reg src0, src_reg src1)
 {
@@ -1281,6 +1281,8 @@ vec4_visitor::emit_minmax(enum brw_conditional_mod conditionalmod, dst_reg dst,
       inst = emit(BRW_OPCODE_SEL, dst, src0, src1);
       inst->predicate = BRW_PREDICATE_NORMAL;
    }
+
+   return inst;
 }
 
 void