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aes/asm/bsaes-armv7.pl: omit redundant stores in XTS subroutines. 

Reviewed-by: Rich Salz <rsalz@openssl.org>
(cherry picked from commit 4973a60cb9)
This commit is contained in:
Andy Polyakov 2016-06-18 15:49:57 +02:00
parent b62e9bf5cb
commit c3bc7f4988
1 changed files with 2 additions and 20 deletions
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22
crypto/aes/asm/bsaes-armv7.pl
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@ -1797,8 +1797,6 @@ $code.=<<___;
b .Lxts_enc_done b .Lxts_enc_done
.align 4 .align 4
.Lxts_enc_6: .Lxts_enc_6:
vst1.64 {@XMM[14]}, [r0,:128] @ next round tweak
veor @XMM[4], @XMM[4], @XMM[12] veor @XMM[4], @XMM[4], @XMM[12]
#ifndef BSAES_ASM_EXTENDED_KEY #ifndef BSAES_ASM_EXTENDED_KEY
add r4, sp, #0x90 @ pass key schedule add r4, sp, #0x90 @ pass key schedule
@ -1834,8 +1832,6 @@ $code.=<<___;
.align 5 .align 5
.Lxts_enc_5: .Lxts_enc_5:
vst1.64 {@XMM[13]}, [r0,:128] @ next round tweak
veor @XMM[3], @XMM[3], @XMM[11] veor @XMM[3], @XMM[3], @XMM[11]
#ifndef BSAES_ASM_EXTENDED_KEY #ifndef BSAES_ASM_EXTENDED_KEY
add r4, sp, #0x90 @ pass key schedule add r4, sp, #0x90 @ pass key schedule
@ -1864,8 +1860,6 @@ $code.=<<___;
b .Lxts_enc_done b .Lxts_enc_done
.align 4 .align 4
.Lxts_enc_4: .Lxts_enc_4:
vst1.64 {@XMM[12]}, [r0,:128] @ next round tweak
veor @XMM[2], @XMM[2], @XMM[10] veor @XMM[2], @XMM[2], @XMM[10]
#ifndef BSAES_ASM_EXTENDED_KEY #ifndef BSAES_ASM_EXTENDED_KEY
add r4, sp, #0x90 @ pass key schedule add r4, sp, #0x90 @ pass key schedule
@ -1891,8 +1885,6 @@ $code.=<<___;
b .Lxts_enc_done b .Lxts_enc_done
.align 4 .align 4
.Lxts_enc_3: .Lxts_enc_3:
vst1.64 {@XMM[11]}, [r0,:128] @ next round tweak
veor @XMM[1], @XMM[1], @XMM[9] veor @XMM[1], @XMM[1], @XMM[9]
#ifndef BSAES_ASM_EXTENDED_KEY #ifndef BSAES_ASM_EXTENDED_KEY
add r4, sp, #0x90 @ pass key schedule add r4, sp, #0x90 @ pass key schedule
@ -1917,8 +1909,6 @@ $code.=<<___;
b .Lxts_enc_done b .Lxts_enc_done
.align 4 .align 4
.Lxts_enc_2: .Lxts_enc_2:
vst1.64 {@XMM[10]}, [r0,:128] @ next round tweak
veor @XMM[0], @XMM[0], @XMM[8] veor @XMM[0], @XMM[0], @XMM[8]
#ifndef BSAES_ASM_EXTENDED_KEY #ifndef BSAES_ASM_EXTENDED_KEY
add r4, sp, #0x90 @ pass key schedule add r4, sp, #0x90 @ pass key schedule
@ -1941,7 +1931,7 @@ $code.=<<___;
.align 4 .align 4
.Lxts_enc_1: .Lxts_enc_1:
mov r0, sp mov r0, sp
veor @XMM[0], @XMM[8] veor @XMM[0], @XMM[0], @XMM[8]
mov r1, sp mov r1, sp
vst1.8 {@XMM[0]}, [sp,:128] vst1.8 {@XMM[0]}, [sp,:128]
mov r2, $key mov r2, $key
@ -2251,8 +2241,6 @@ $code.=<<___;
b .Lxts_dec_done b .Lxts_dec_done
.align 4 .align 4
.Lxts_dec_5: .Lxts_dec_5:
vst1.64 {@XMM[13]}, [r0,:128] @ next round tweak
veor @XMM[3], @XMM[3], @XMM[11] veor @XMM[3], @XMM[3], @XMM[11]
#ifndef BSAES_ASM_EXTENDED_KEY #ifndef BSAES_ASM_EXTENDED_KEY
add r4, sp, #0x90 @ pass key schedule add r4, sp, #0x90 @ pass key schedule
@ -2281,8 +2269,6 @@ $code.=<<___;
b .Lxts_dec_done b .Lxts_dec_done
.align 4 .align 4
.Lxts_dec_4: .Lxts_dec_4:
vst1.64 {@XMM[12]}, [r0,:128] @ next round tweak
veor @XMM[2], @XMM[2], @XMM[10] veor @XMM[2], @XMM[2], @XMM[10]
#ifndef BSAES_ASM_EXTENDED_KEY #ifndef BSAES_ASM_EXTENDED_KEY
add r4, sp, #0x90 @ pass key schedule add r4, sp, #0x90 @ pass key schedule
@ -2308,8 +2294,6 @@ $code.=<<___;
b .Lxts_dec_done b .Lxts_dec_done
.align 4 .align 4
.Lxts_dec_3: .Lxts_dec_3:
vst1.64 {@XMM[11]}, [r0,:128] @ next round tweak
veor @XMM[1], @XMM[1], @XMM[9] veor @XMM[1], @XMM[1], @XMM[9]
#ifndef BSAES_ASM_EXTENDED_KEY #ifndef BSAES_ASM_EXTENDED_KEY
add r4, sp, #0x90 @ pass key schedule add r4, sp, #0x90 @ pass key schedule
@ -2334,8 +2318,6 @@ $code.=<<___;
b .Lxts_dec_done b .Lxts_dec_done
.align 4 .align 4
.Lxts_dec_2: .Lxts_dec_2:
vst1.64 {@XMM[10]}, [r0,:128] @ next round tweak
veor @XMM[0], @XMM[0], @XMM[8] veor @XMM[0], @XMM[0], @XMM[8]
#ifndef BSAES_ASM_EXTENDED_KEY #ifndef BSAES_ASM_EXTENDED_KEY
add r4, sp, #0x90 @ pass key schedule add r4, sp, #0x90 @ pass key schedule
@ -2358,7 +2340,7 @@ $code.=<<___;
.align 4 .align 4
.Lxts_dec_1: .Lxts_dec_1:
mov r0, sp mov r0, sp
veor @XMM[0], @XMM[8] veor @XMM[0], @XMM[0], @XMM[8]
mov r1, sp mov r1, sp
vst1.8 {@XMM[0]}, [sp,:128] vst1.8 {@XMM[0]}, [sp,:128]
mov r5, $magic @ preserve magic mov r5, $magic @ preserve magic