[Xen-devel] [PATCH3] Don't optimize function calls with -g

[Samuel Thibault <samuel.thibault@xxxxxxxxxxxxx>]

Keir Fraser, le Fri 07 Mar 2008 13:36:31 +0000, a écrit :
> Note that we do CFLAGS ?= ... in StdGNU.mk and SunOS.mk right
> now. Probably these should be changed to +=.

Ooh, that's why I missed the already existing -fno-omit-frame-pointer
there.

> Whether SunOS should really have different usage of omit-frame-pointer is
> open to argument.

Ok, I'll leave it to people who actually run a SunOS system :)



Don't optimize function calls on GNU systems with debug=y
by enforcing the addition of -fno-omit-frame-pointer, and adding
-fno-optimize-sibling-calls.

Signed-off-by: Samuel Thibault <samuel.thibault@xxxxxxxxxxxxx>

diff -r fb74347d80c3 config/StdGNU.mk
--- a/config/StdGNU.mk  Wed Mar 05 12:20:40 2008 +0000
+++ b/config/StdGNU.mk  Fri Mar 07 14:54:43 2008 +0000
@@ -45,5 +45,5 @@ CFLAGS ?= -O2 -fomit-frame-pointer
 CFLAGS ?= -O2 -fomit-frame-pointer
 else
 # Less than -O1 produces bad code and large stack frames
-CFLAGS ?= -O1 -fno-omit-frame-pointer
+CFLAGS += -O1 -fno-omit-frame-pointer -fno-optimize-sibling-calls
 endif

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel