On 29 November 2017 at 00:00, Sami Tolvanen <samitolvanen@xxxxxxxxxx> wrote: > From: Greg Hackmann <ghackmann@xxxxxxxxxx> > > LLVM bug 30792 causes clang's AArch64 backend to crash compiling > arch/arm64/crypto/aes-ce-cipher.c. Replacing -mgeneral-regs-only with > -mno-implicit-float is the suggested workaround. > Do we still need these patches now that the AES code has been fixed? > Signed-off-by: Greg Hackmann <ghackmann@xxxxxxxxxx> > Cc: Matthias Kaehlcke <mka@xxxxxxxxxxxx> > [added clang-ifversion to enable the workaround only for clang <6.0] > Signed-off-by: Sami Tolvanen <samitolvanen@xxxxxxxxxx> > --- > arch/arm64/Makefile | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile > index b35788c909f1..d2efb5a0212f 100644 > --- a/arch/arm64/Makefile > +++ b/arch/arm64/Makefile > @@ -49,7 +49,10 @@ $(warning Detected assembler with broken .inst; disassembly will be unreliable) > endif > endif > > -KBUILD_CFLAGS += -mgeneral-regs-only $(lseinstr) $(brokengasinst) > +# This is a workaround for https://bugs.llvm.org/show_bug.cgi?id=30792. > +KBUILD_CFLAGS += $(call clang-ifversion, -lt, 0600, -mno-implicit-float, -mgeneral-regs-only) > + > +KBUILD_CFLAGS += $(lseinstr) $(brokengasinst) > KBUILD_CFLAGS += -fno-asynchronous-unwind-tables > KBUILD_CFLAGS += $(call cc-option, -mpc-relative-literal-loads) > KBUILD_AFLAGS += $(lseinstr) $(brokengasinst) > -- > 2.15.0.417.g466bffb3ac-goog > -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
