Commit 0030cbf0 authored by Matthias Urlichs's avatar Matthias Urlichs Committed by Linus Torvalds
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[PATCH] Turn off sibling call optimization w/ frame pointers



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: default avatarMatthias Urlichs <smurf@smurf.noris.de>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 71a2224d
...@@ -518,7 +518,7 @@ CFLAGS += $(call add-align,CONFIG_CC_ALIGN_LOOPS,-loops) ...@@ -518,7 +518,7 @@ CFLAGS += $(call add-align,CONFIG_CC_ALIGN_LOOPS,-loops)
CFLAGS += $(call add-align,CONFIG_CC_ALIGN_JUMPS,-jumps) CFLAGS += $(call add-align,CONFIG_CC_ALIGN_JUMPS,-jumps)
ifdef CONFIG_FRAME_POINTER ifdef CONFIG_FRAME_POINTER
CFLAGS += -fno-omit-frame-pointer CFLAGS += -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,)
else else
CFLAGS += -fomit-frame-pointer CFLAGS += -fomit-frame-pointer
endif endif
......
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