From d38c67f53d2284b0cb4e6ca2291b292442703c8a Mon Sep 17 00:00:00 2001
From: Clifford Wolf <clifford@clifford.at>
Date: Mon, 4 Nov 2013 16:46:14 +0100
Subject: [PATCH] Fixed const folding of ternary operator

---
 frontends/ast/simplify.cc | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/frontends/ast/simplify.cc b/frontends/ast/simplify.cc
index cc65658c8..643855d08 100644
--- a/frontends/ast/simplify.cc
+++ b/frontends/ast/simplify.cc
@@ -1033,10 +1033,11 @@ skip_dynamic_range_lvalue_expansion:;
 			break;
 		case AST_TERNARY:
 			if (children[0]->type == AST_CONSTANT) {
-				if (children[0]->integer)
-					newNode = children[1]->clone();
-				else
-					newNode = children[2]->clone();
+				AstNode *choice = children[children[0]->integer ? 1 : 2];
+				if (choice->type == AST_CONSTANT) {
+					RTLIL::Const y = choice->bitsAsConst(width_hint, sign_hint);
+					newNode = mkconst_bits(y.bits, sign_hint);
+				}
 			}
 			break;
 		case AST_CONCAT:
-- 
2.30.2