--- parrot-orig/config/gen/makefiles/CFLAGS.in	2009-04-21 10:04:22.881939171 -0400
+++ parrot-andy/config/gen/makefiles/CFLAGS.in	2009-04-21 10:03:24.049939361 -0400
@@ -8,8 +8,14 @@
 src/platform.c      -{-Wcast-qual}          # noisy
 src/spf_render.c    -{-Wformat-nonliteral}  # noisy
 src/tsq.c           -{@optimize@}           # never optimize tsq.c!
-src/ops/core_ops_cg.c      -{@optimize@}    # takes too long
-src/ops/core_ops_switch.c  -{@optimize@}    # Overwhelms some compilers.
+
+# The src/ops/core_ops*.c files are challenging to optimize.
+# gcc can usually handle it, but don't assume any other compilers can,
+# until there is specific evidence otherwise.
+#UNLESS(gccversion):src/ops/core_ops_cg.c      -{@optimize@}
+#UNLESS(gccversion):src/ops/core_ops_cgp.c     -{@optimize@}
+#UNLESS(gccversion):src/ops/core_ops_switch.c  -{@optimize@}
+
 #IF(cpuarch==amd64):src/gc/system.c  -{@optimize@}              # TT #405 amd64 --optimize problem
 
 # io should be -Wunused clean