[Mesa-dev] [PATCH 19/50] glsl: Add a lowering pass for 64-bit float abs()

[Dave Airlie]

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

Squashed with:
glsl/lower_64bit: fix return type conversion (airlied)

Only do conversion for the 64-bit types, add a path
to do result merging without conversion.

Signed-off-by: Elie Tournier <elie.tournier at collabora.com>
---
 src/compiler/glsl/ir_optimization.h | 1 +
 src/compiler/glsl/lower_64bit.cpp   | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/src/compiler/glsl/ir_optimization.h b/src/compiler/glsl/ir_optimization.h
index 931bffb..c48d0a9 100644
--- a/src/compiler/glsl/ir_optimization.h
+++ b/src/compiler/glsl/ir_optimization.h
@@ -60,6 +60,7 @@
 #define SIGN64                    (1U << 1)
 #define DIV64                     (1U << 2)
 #define MOD64                     (1U << 3)
+#define ABS64                     (1U << 4)
 
 /**
  * \see class lower_packing_builtins_visitor
diff --git a/src/compiler/glsl/lower_64bit.cpp b/src/compiler/glsl/lower_64bit.cpp
index d181f63..debedfc 100644
--- a/src/compiler/glsl/lower_64bit.cpp
+++ b/src/compiler/glsl/lower_64bit.cpp
@@ -416,6 +416,14 @@ lower_64bit_visitor::handle_rvalue(ir_rvalue **rvalue)
    assert(ir != NULL);
 
    switch (ir->operation) {
+
+   case ir_unop_abs:
+      if (lowering(ABS64)) {
+         if (ir->type->base_type == GLSL_TYPE_DOUBLE)
+            *rvalue = handle_op(ir, "__builtin_fabs64", generate_ir::fabs64);
+      }
+      break;
+
    case ir_unop_sign:
       if (lowering(SIGN64)) {
          if (ir->type->is_integer_64())
-- 
2.9.5