From 3e4531657c1514d296b210ff586453c4dd4c6d30 Mon Sep 17 00:00:00 2001
From: Dan Gohman <sunfish@mozilla.com>
Date: Thu, 19 Apr 2018 17:49:48 -0700
Subject: [PATCH] Temporarily disable the shink_instruction pass.

It appears some of the instruction encodings are incorrect. Temporarily
disable the use of shorter encodings until these are fixed.
---
 lib/codegen/src/context.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/codegen/src/context.rs b/lib/codegen/src/context.rs
index 42fde1cc4a..d9dcf7ba87 100644
--- a/lib/codegen/src/context.rs
+++ b/lib/codegen/src/context.rs
@@ -140,9 +140,12 @@ impl Context {
         }
         self.regalloc(isa)?;
         self.prologue_epilogue(isa)?;
+        // Temporarily disable the shrink_instructions pass, as it causes miscompiles.
+        /*
         if isa.flags().opt_level() == OptLevel::Best {
             self.shrink_instructions(isa)?;
         }
+        */
         self.relax_branches(isa)
     }