From: simonmar <unknown>
Date: Mon, 11 Jul 2005 09:10:58 +0000 (+0000)
Subject: [project @ 2005-07-11 09:10:58 by simonmar]
X-Git-Tag: Initial_conversion_from_CVS_complete~388
X-Git-Url: http://git.megacz.com/?a=commitdiff_plain;h=6869e00cad046fdeeca3e4c5f6c883ca4007ac09;p=ghc-hetmet.git

[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.
---

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"], [] )