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[v3,3/4] crypto: arm/crct10dif - remove dead code

Message ID 20190127091655.6262-4-ard.biesheuvel@linaro.org
State Accepted
Commit c03f3cb40ba93a9f49fc44a71ddaa46f93f90a15
Headers show
Series crypto: fix crct10dif for ARM and arm64 | expand

Commit Message

Ard Biesheuvel Jan. 27, 2019, 9:16 a.m. UTC 
Remove some code that is no longer called now that we make sure never
to invoke the SIMD routine with less that 16 bytes of input.

Reviewed-by: Eric Biggers <ebiggers@kernel.org>

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>

---
 arch/arm/crypto/crct10dif-ce-core.S | 13 -------------
 1 file changed, 13 deletions(-)

-- 
2.20.1
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Patch

diff --git a/arch/arm/crypto/crct10dif-ce-core.S b/arch/arm/crypto/crct10dif-ce-core.S
index 16019b5961e7..d058fad423c2 100644
--- a/arch/arm/crypto/crct10dif-ce-core.S
+++ b/arch/arm/crypto/crct10dif-ce-core.S
@@ -342,7 +342,6 @@  CPU_LE(	vrev64.8	q7, q7		)
 
 	cmp		arg3, #16
 	beq		_128_done		// exactly 16 left
-	blt		_less_than_16_left
 
 	// now if there is, load the constants
 	vldr		d20, rk1
@@ -353,18 +352,6 @@  CPU_LE(	vrev64.8	q7, q7		)
 	addlt		arg3, arg3, #16
 	blt		_get_last_two_regs
 	b		_16B_reduction_loop
-
-_less_than_16_left:
-	// shl r9, 4
-	adr		ip, tbl_shf_table + 16
-	sub		ip, ip, arg3
-	vld1.8		{q0}, [ip]
-	vmov.i8		q9, #0x80
-	veor.8		q0, q0, q9
-	vtbl.8		d18, {d14-d15}, d0
-	vtbl.8		d15, {d14-d15}, d1
-	vmov		d14, d18
-	b		_128_done
 ENDPROC(crc_t10dif_pmull)
 
 // precomputed constants