From fd110e9848a784b3d64278dd7b72114eda1b7c7e Mon Sep 17 00:00:00 2001
From: whitequark <whitequark@whitequark.org>
Date: Sat, 19 May 2018 16:57:47 +0000
Subject: [PATCH] compiler: sort predecessors in IR dump output.

Makes diffs more useful.
---
 artiq/compiler/ir.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/artiq/compiler/ir.py b/artiq/compiler/ir.py
index 3184a4a61..d54ce0518 100644
--- a/artiq/compiler/ir.py
+++ b/artiq/compiler/ir.py
@@ -379,7 +379,7 @@ class BasicBlock(NamedValue):
         lines = ["{}:".format(escape_name(self.name))]
         if self.function is not None:
             lines[0] += " ; predecessors: {}".format(
-                ", ".join([escape_name(pred.name) for pred in self.predecessors()]))
+                ", ".join(sorted([escape_name(pred.name) for pred in self.predecessors()])))
 
         # Annotated instructions
         loc = None