[Mesa-dev] [PATCH 06/22] glsl: Add sin, cos and sign to get_range

[Thomas Helland]

They are bound between -1 and 1, so exploit that.

v2: Put in alphabetical order
    Just return directly instead of assigning to temp variable.
---
 src/glsl/opt_minmax.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/glsl/opt_minmax.cpp b/src/glsl/opt_minmax.cpp
index 2faa3c3..ffdf203 100644
--- a/src/glsl/opt_minmax.cpp
+++ b/src/glsl/opt_minmax.cpp
@@ -308,6 +308,14 @@ get_range(ir_rvalue *rval)
          low = new(mem_ctx) ir_constant(0.0f);
          return minmax_range(low, high);
 
+      case ir_unop_sin:
+      case ir_unop_sin_reduced:
+      case ir_unop_cos:
+      case ir_unop_cos_reduced:
+      case ir_unop_sign:
+         return minmax_range(new(mem_ctx) ir_constant(-1.0f),
+                             new(mem_ctx) ir_constant(1.0f));
+
       case ir_binop_min:
       case ir_binop_max:
          r0 = get_range(expr->operands[0]);
-- 
2.2.1