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[PATCH] Turn off sibling call optimization w/ frame pointers

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Frame pointers are supposed to enable debuggers to reliably tell where a
call comes from.  That is defeated by GCC's sibling call optimization (aka
tail recursion elimination).

This patch turns this optimization off when compiling with frame pointers.

Signed-Off-By: Matthias Urlichs <smurf@smurf.noris.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Matthias Urlichs 2005-06-23 00:10:05 -07:00 committed by Linus Torvalds
parent 71a2224d7d
commit 0030cbf06c
1 changed files with 1 additions and 1 deletions
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Makefile
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@ -518,7 +518,7 @@ CFLAGS += $(call add-align,CONFIG_CC_ALIGN_LOOPS,-loops)
CFLAGS += $(call add-align,CONFIG_CC_ALIGN_JUMPS,-jumps)
ifdef CONFIG_FRAME_POINTER
CFLAGS += -fno-omit-frame-pointer
CFLAGS += -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,)
else
CFLAGS += -fomit-frame-pointer
endif