From: Dale Weiler <killfieldengine@gmail.com>
Date: Sat, 28 Sep 2013 10:33:15 +0000 (-0400)
Subject: It was much easier in the AST, really.
X-Git-Tag: 0.3.5~64
X-Git-Url: https://git.rm.cloudns.org/?a=commitdiff_plain;h=7c25af973cfd743d9e24384a8cbe084208fc5d97;p=xonotic%2Fgmqcc.git

It was much easier in the AST, really.
---

diff --git a/ast.c b/ast.c
index 9f33e22..3fb27d3 100644
--- a/ast.c
+++ b/ast.c
@@ -518,6 +518,16 @@ ast_unary* ast_unary_new(lex_ctx_t ctx, int op,
     self->op = op;
     self->operand = expr;
 
+    if (ast_istype(expr, ast_unary)) {
+        ast_expression *prev = (ast_expression*)((ast_unary*)expr)->operand;
+        if (ast_istype(prev, ast_unary)) {
+            ast_expression_delete((ast_expression*)self);
+            mem_d(self);
+            ++opts_optimizationcount[OPTIM_PEEPHOLE];
+            return (ast_unary*)prev;
+        }
+    }
+
     ast_propagate_effects(self, expr);
 
     if (op >= INSTR_NOT_F && op <= INSTR_NOT_FNC) {