[Mesa-dev] [PATCH 25/50] glsl: Add a lowering pass for 64-bit float add()

[Dave Airlie]

From: Elie Tournier <tournier.elie at gmail.com>

Signed-off-by: Elie Tournier <elie.tournier at collabora.com>
---
 src/compiler/glsl/ir_optimization.h | 4 +++-
 src/compiler/glsl/lower_64bit.cpp   | 7 +++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/compiler/glsl/ir_optimization.h b/src/compiler/glsl/ir_optimization.h
index b5f8c45..691803e 100644
--- a/src/compiler/glsl/ir_optimization.h
+++ b/src/compiler/glsl/ir_optimization.h
@@ -64,8 +64,10 @@
 #define NEG64                     (1U << 5)
 #define EQ64                      (1U << 6)
 #define LT64                      (1U << 7)
+#define ADD64                     (1U << 8)
 
-#define LOWER_ALL_DOUBLE_OPS (ABS64 | NEG64 | SIGN64 | EQ64 | LT64)
+#define LOWER_ALL_DOUBLE_OPS (ABS64 | NEG64 | SIGN64 | EQ64 | LT64 | \
+                              ADD64)
 
 /**
  * \see class lower_packing_builtins_visitor
diff --git a/src/compiler/glsl/lower_64bit.cpp b/src/compiler/glsl/lower_64bit.cpp
index 24cc3cd..eed1dba 100644
--- a/src/compiler/glsl/lower_64bit.cpp
+++ b/src/compiler/glsl/lower_64bit.cpp
@@ -440,6 +440,13 @@ lower_64bit_visitor::handle_rvalue(ir_rvalue **rvalue)
       }
       break;
 
+   case ir_binop_add:
+      if (lowering(ADD64)) {
+         if (ir->type->base_type == GLSL_TYPE_DOUBLE)
+            *rvalue = handle_op(ir, "__builtin_fadd64", generate_ir::fadd64);
+      }
+      break;
+
    case ir_binop_div:
       if (lowering(DIV64)) {
          if (ir->type->base_type == GLSL_TYPE_UINT64) {
-- 
2.9.5