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UPSTREAM: kbuild: clang: add -no-integrated-as to KBUILD_[AC]FLAGS

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The Linux Kernel relies on GCC's acceptance of inline assembly as an
opaque object which will not have any validation performed on the content.
The current behaviour in LLVM is to perform validation of the contents by
means of parsing the input if the MC layer can handle it.

Disable clangs integrated assembler and use the GNU assembler instead.

Wording-mostly-from: Saleem Abdulrasool <compnerd@compnerd.org>
Signed-off-by: Michael Davidson <md@google.com>
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
(cherry picked from commit a37c45cd82)
Signed-off-by: Greg Hackmann <ghackmann@google.com>

Change-Id: Iae412ad5294f8f5e4d66f0085a5dd70f5464ac91
This commit is contained in:
Michael Davidson
2017-04-25 15:47:35 -07:00
committed by Greg Hackmann
parent 3ef0a0c859
commit 8a89d5fc7c
1 changed files with 2 additions and 0 deletions
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2
Makefile
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@@ -715,6 +715,8 @@ KBUILD_CFLAGS += $(call cc-disable-warning, tautological-compare)
# See modpost pattern 2
KBUILD_CFLAGS += $(call cc-option, -mno-global-merge,)
KBUILD_CFLAGS += $(call cc-option, -fcatch-undefined-behavior)
KBUILD_CFLAGS += $(call cc-option, -no-integrated-as)
KBUILD_AFLAGS += $(call cc-option, -no-integrated-as)
else
# These warnings generated too much noise in a regular build.