glsl: Add a lowering pass for 64-bit integer modulus

Signed-off-by: Ian Romanick <[email protected]>
Reviewed-by: Matt Turner <[email protected]>

2 files changed, 12 insertions, 0 deletions

diff --git a/src/compiler/glsl/ir_optimization.h b/src/compiler/glsl/ir_optimization.h
index 3f0ef7d280c..d46b9579941 100644
--- a/src/compiler/glsl/ir_optimization.h
+++ b/src/compiler/glsl/ir_optimization.h
@@ -54,6 +54,7 @@
 #define MUL64                     (1U << 0)
 #define SIGN64                    (1U << 1)
 #define DIV64                     (1U << 2)
+#define MOD64                     (1U << 3)
 
 /**
  * \see class lower_packing_builtins_visitor
diff --git a/src/compiler/glsl/lower_int64.cpp b/src/compiler/glsl/lower_int64.cpp
index a0b5e1809a5..0a19ce429e4 100644
--- a/src/compiler/glsl/lower_int64.cpp
+++ b/src/compiler/glsl/lower_int64.cpp
@@ -379,6 +379,17 @@ lower_64bit_visitor::handle_rvalue(ir_rvalue **rvalue)
       }
       break;
 
+   case ir_binop_mod:
+      if (lowering(MOD64)) {
+         if (ir->type->base_type == GLSL_TYPE_UINT64) {
+            *rvalue = handle_op(ir, "__builtin_umod64", generate_ir::umod64);
+         } else {
+            *rvalue = handle_op(ir, "__builtin_imod64", generate_ir::imod64);
+         }
+         this->progress = true;
+      }
+      break;
+
    case ir_binop_mul:
       if (lowering(MUL64)) {
          *rvalue = handle_op(ir, "__builtin_umul64", generate_ir::umul64);