[project @ 2002-08-02 12:24:04 by simonmar]

Pass -fno-builtin to gcc when compiling .hc files, because this avoids
a common cause of running out of registers when foreign calls to
functions like memcpy(), strlen() are made from Haskell.

MERGE

diff --git a/ghc/compiler/main/DriverFlags.hs b/ghc/compiler/main/DriverFlags.hs
index 63aa85c..5cd1839 100644 (file)
--- a/ghc/compiler/main/DriverFlags.hs
+++ b/ghc/compiler/main/DriverFlags.hs
@@ -1,5 +1,5 @@
 -----------------------------------------------------------------------------
--- $Id: DriverFlags.hs,v 1.99 2002/07/11 06:52:23 ken Exp $
+-- $Id: DriverFlags.hs,v 1.100 2002/08/02 12:24:04 simonmar Exp $
 --
 -- Driver flags
 --
@@ -572,6 +572,10 @@ machdepCCOpts
 --                    , if suffixMatch "mingw32" cTARGETPLATFORM then "-mno-cygwin" else "" 
                      ],
                      [ "-fno-defer-pop", "-fomit-frame-pointer",
+                       -- we want -fno-builtin, because when gcc inlines
+                       -- built-in functions like memcpy() it tends to
+                       -- run out of registers, requiring -monly-n-regs
+                       "-fno-builtin",
                        "-DSTOLEN_X86_REGS="++show n_regs ]
                    )