From 6869e00cad046fdeeca3e4c5f6c883ca4007ac09 Mon Sep 17 00:00:00 2001
From: simonmar <unknown>
Date: Mon, 11 Jul 2005 09:10:58 +0000
Subject: [PATCH] [project @ 2005-07-11 09:10:58 by simonmar] x86_64: Pass
 -fno-asynchronous-unwind-tables to gcc, which eliminates
 some unnecessary junk from the via-C generated code and
 allows -split-objs to work.

---
 ghc/compiler/main/DynFlags.hs |    8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/ghc/compiler/main/DynFlags.hs b/ghc/compiler/main/DynFlags.hs
index 05a6806..3b4d306 100644
--- a/ghc/compiler/main/DynFlags.hs
+++ b/ghc/compiler/main/DynFlags.hs
@@ -1225,7 +1225,13 @@ machdepCCOpts dflags
 	= ( [], ["-fomit-frame-pointer", "-G0"] )
 
 #elif x86_64_TARGET_ARCH
-	= ( [], ["-fomit-frame-pointer"] )
+	= ( [], ["-fomit-frame-pointer",
+		 "-fno-asynchronous-unwind-tables"
+			-- the unwind tables are unnecessary for HC code,
+			-- and get in the way of -split-objs.  Another option
+			-- would be to throw them away in the mangler, but this
+			-- is easier.
+		] )
 
 #elif mips_TARGET_ARCH
 	= ( ["-static"], [] )
-- 
1.7.10.4