crypto: x86/crc32c - fix building with clang ias

[ Upstream commit 44623b2818f4a442726639572f44fd9b6d0ef68c ]

The clang integrated assembler complains about movzxw:

arch/x86/crypto/crc32c-pcl-intel-asm_64.S:173:2: error: invalid instruction mnemonic 'movzxw'

It seems that movzwq is the mnemonic that it expects instead,
and this is what objdump prints when disassembling the file.

Fixes: 6a8ce1ef3940 ("crypto: crc32c - Optimize CRC32C calculation with PCLMULQDQ instruction")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/arch/x86/crypto/crc32c-pcl-intel-asm_64.S b/arch/x86/crypto/crc32c-pcl-intel-asm_64.S
index 8501ec4532f4f5966805cbb49853bd3e8af75a9d..442599cbe79600fa35ff6066a55f35305052106b 100644 (file)
--- a/arch/x86/crypto/crc32c-pcl-intel-asm_64.S
+++ b/arch/x86/crypto/crc32c-pcl-intel-asm_64.S
@@ -170,7 +170,7 @@ continue_block:
 
        ## branch into array
        lea     jump_table(%rip), %bufp
-       movzxw  (%bufp, %rax, 2), len
+       movzwq  (%bufp, %rax, 2), len
        lea     crc_array(%rip), %bufp
        lea     (%bufp, len, 1), %bufp
        JMP_NOSPEC bufp