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Revert "[PATCH] x86: Drop cc-options call for all options supported in gcc 3.2+"

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This reverts commit c8fdd24725.

It turns out the kernel was correct, and the gcc complaint was a gcc
bug.  The preferred stack boundary is expressed not in bytes, but in the
the log2() of the preferred boundary, so "-mpreferred-stack-boundary=2"
is in fact exactly what we want, but a gcc that is compiled for x86-64
will consider it an error (because the 64-bit calling sequence says that
the stack should be 16-byte aligned) even if we are then using "-m32" to
generate 32-bit code.

Noted-by: Mikulas Patocka <[email protected]>
Cc: Jan Hubicka <[email protected]>
Acked-by: Andi Kleen <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Linus Torvalds 2007-05-17 20:18:11 -07:00
commit b46522394d
2 changed files with 2 additions and 2 deletions
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Makefile
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@ -491,7 +491,7 @@ endif
include $(srctree)/arch/$(ARCH)/Makefile
ifdef CONFIG_FRAME_POINTER
CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls
CFLAGS += -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,)
else
CFLAGS += -fomit-frame-pointer
endif