ANDROID: HACK: arm64: use -mno-implicit-float instead of -mgeneral-re…

…gs-only 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. Drop this patch once the clang bug has been fixed. Change-Id: I89fda12d826783ffe18142ba048ff10bd769e240 Signed-off-by: Greg Hackmann <[email protected]> Signed-off-by: Matthias Kaehlcke <[email protected]>
ArchiveRepositories · Oct 16, 2017 · e07bcf7 · e07bcf7
1 parent 5d15d2e
commit e07bcf7
Showing 1 changed file with 8 additions and 1 deletion.
diff --git a/arch/arm64/Makefile b/arch/arm64/Makefile
@@ -37,7 +37,14 @@ $(warning LSE atomics not supported by binutils)
   endif
 endif
 
-KBUILD_CFLAGS	+= -mgeneral-regs-only $(lseinstr)
+ifeq ($(cc-name),clang)
+# This is a workaround for https://bugs.llvm.org/show_bug.cgi?id=30792.
+# TODO: revert when this is fixed in LLVM.
+KBUILD_CFLAGS	+= -mno-implicit-float
+else
+KBUILD_CFLAGS	+= -mgeneral-regs-only
+endif
+KBUILD_CFLAGS	+= $(lseinstr)
 KBUILD_CFLAGS	+= -fno-asynchronous-unwind-tables
 KBUILD_CFLAGS	+= $(call cc-option, -mpc-relative-literal-loads)
 KBUILD_CFLAGS	+= -fno-pic