lib/crypto: x86/blake2s: Drop check for nblocks == 0

Since blake2s_compress() is always passed nblocks != 0, remove the
unnecessary check for nblocks == 0 from blake2s_compress_ssse3().

Note that this makes it consistent with blake2s_compress_avx512() in the
same file as well as the arm32 blake2s_compress().

Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20251102234209.62133-3-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>

diff --git a/lib/crypto/x86/blake2s-core.S b/lib/crypto/x86/blake2s-core.S
index 093e7814f387966fee6fe89b964acfbe1339d5d1..aee13b97cc3469fac0070bcd2c4ae6dba3e7e0f5 100644 (file)
--- a/lib/crypto/x86/blake2s-core.S
+++ b/lib/crypto/x86/blake2s-core.S
@@ -45,8 +45,6 @@ SIGMA2:
 
 .text
 SYM_FUNC_START(blake2s_compress_ssse3)
-       testq           %rdx,%rdx
-       je              .Lendofloop
        movdqu          (%rdi),%xmm0
        movdqu          0x10(%rdi),%xmm1
        movdqa          ROT16(%rip),%xmm12
@@ -168,7 +166,6 @@ SYM_FUNC_START(blake2s_compress_ssse3)
        movdqu          %xmm0,(%rdi)
        movdqu          %xmm1,0x10(%rdi)
        movdqu          %xmm14,0x20(%rdi)
-.Lendofloop:
        RET
 SYM_FUNC_END(blake2s_compress_ssse3)