From 1133308dd5dbf177c8d86e762a2e1a20a9254576 Mon Sep 17 00:00:00 2001
From: Sebastien Bourdeauducq <sb@m-labs.hk>
Date: Mon, 8 Sep 2014 18:25:04 +0800
Subject: [PATCH] py2llvm: support 'neg' on VInt

---
 artiq/py2llvm/base_types.py | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/artiq/py2llvm/base_types.py b/artiq/py2llvm/base_types.py
index cbd6126b5..a922a2d75 100644
--- a/artiq/py2llvm/base_types.py
+++ b/artiq/py2llvm/base_types.py
@@ -74,6 +74,15 @@ class VInt(VGeneric):
     def o_not(self, builder):
         return self.o_bool(builder, True)
 
+    def o_neg(self, builder):
+        r = VInt(self.nbits)
+        if builder is not None:
+            r.set_ssa_value(
+                builder, builder.mul(
+                    self.get_ssa_value(builder),
+                    lc.Constant.int(self.get_llvm_type(), -1)))
+        return r
+
     def o_intx(self, target_bits, builder):
         r = VInt(target_bits)
         if builder is not None: