X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=rts%2FMakefile;h=ff7d82af50717b3dd63c30c880dd5530cdfceb81;hb=27db51b3ef829728dd1c16d1324f959d116d67ea;hp=b1111a027fba4ac26752d31a202153a8146092e2;hpb=b1953bbb1ed3cb16497e5447db7487f0c2d9e41a;p=ghc-hetmet.git

diff --git a/rts/Makefile b/rts/Makefile
index b1111a0..ff7d82a 100644
--- a/rts/Makefile
+++ b/rts/Makefile
@@ -315,13 +315,15 @@ SRC_HC_OPTS += -optc-fno-stack-protector
 endif
 
 # -O3 helps unroll some loops (especially in copy() with a constant argument).
-# -fno-strict-aliasing is a hack because we often mix StgPtr and StgClosure pointers
-# to the same object, and gcc will assume these don't alias.  eg. it happens in
-# copy() with gcc 3.4.3, the upd_evacee() assigments get moved before the object copy.
-GC_HC_OPTS += -optc-O3 -optc-fno-strict-aliasing
-
-# Cmm must be compiled via-C for now, because the NCG can't handle loops
-SRC_HC_OPTS += -fvia-C
+GC_HC_OPTS += -optc-O3
+
+# -fno-strict-aliasing is required for the runtime, because we often
+# use a variety of types to represent closure pointers (StgPtr,
+# StgClosure, StgMVar, etc.), and without -fno-strict-aliasing gcc is
+# allowed to assume that these pointers do not alias.  eg. without
+# this flag we get problems in GC.c:copy() with gcc 3.4.3, the
+# upd_evacee() assigments get moved before the object copy.
+SRC_CC_OPTS += -fno-strict-aliasing
 
 # We *want* type-checking of hand-written cmm.
 SRC_HC_OPTS += -dcmm-lint