From: Wolfgang (Blub) Bumiller <blub@speed.at>
Date: Tue, 14 Aug 2012 21:43:08 +0000 (+0200)
Subject: const folding for division
X-Git-Tag: 0.1-rc1~282
X-Git-Url: https://git.rm.cloudns.org/?a=commitdiff_plain;h=a5b3faae30e33c00e6e09f0472dd3e0d37c243a3;p=xonotic%2Fgmqcc.git

const folding for division
---

diff --git a/parser.c b/parser.c
index 9887978..4b09b45 100644
--- a/parser.c
+++ b/parser.c
@@ -608,7 +608,11 @@ static bool parser_sy_pop(parser_t *parser, shunt *sy)
                            type_name[exprs[1]->expression.vtype]);
                 return false;
             }
-            out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
+            if (CanConstFold(exprs[0], exprs[1]))
+                out = (ast_expression*)parser_const_float(parser,
+                    asvalue[0]->constval.vfloat / asvalue[1]->constval.vfloat);
+            else
+                out = (ast_expression*)ast_binary_new(ctx, INSTR_DIV_F, exprs[0], exprs[1]);
             break;
         case opid1('%'):
         case opid2('%','='):