---
src/glsl/opt_minmax.cpp | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/src/glsl/opt_minmax.cpp b/src/glsl/opt_minmax.cpp
index 466db8c..96b1e07 100644
--- a/src/glsl/opt_minmax.cpp
+++ b/src/glsl/opt_minmax.cpp
@@ -301,6 +301,30 @@ get_range(ir_rvalue *rval)
high = neg(r0.low)->constant_expression_value();
return minmax_range(low, high);
+ case ir_unop_rcp:
+ r0 = get_range(expr->operands[0]);
+ if (is_greater_than_zero(r0.low)) {
+ ir_expression *h = new(mem_ctx) ir_expression(ir_unop_rcp, r0.low);
+ high = h->constant_expression_value();
+ if (r0.high) {
+ ir_expression *l = new(mem_ctx) ir_expression(ir_unop_rcp,
r0.high);
+ low = l->constant_expression_value();
+ }
+ }
+ if (is_less_than_zero(r0.low) && is_less_than_zero(r0.high)) {
+ ir_expression *h = new(mem_ctx) ir_expression(ir_unop_rcp, r0.low);
+ high = h->constant_expression_value();
+ ir_expression *l = new(mem_ctx) ir_expression(ir_unop_rcp,
r0.high);
+ low = l->constant_expression_value();
+ }
+ if (is_less_than_zero(r0.low) && is_greater_than_zero(r0.high)) {
+ ir_expression *h = new(mem_ctx) ir_expression(ir_unop_rcp,
r0.high);
+ high = h->constant_expression_value();
+ ir_expression *l = new(mem_ctx) ir_expression(ir_unop_rcp, r0.low);
+ low = l->constant_expression_value();
+ }
+ return minmax_range(low, high);
+
case ir_unop_sqrt:
case ir_unop_rsq:
case ir_unop_exp:
--
2.0.3
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