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feat: improve runtime memset #238

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merged 1 commit into from
Mar 10, 2025
Merged

feat: improve runtime memset #238

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10 changes: 1 addition & 9 deletions runtime/entrypoint/src/memcpy.s
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Original file line number Diff line number Diff line change
Expand Up @@ -217,10 +217,6 @@ memcpy: # @memcpy
.set nomacro
.set noat
# %bb.0: #23
addiu $sp, $sp, -8
sw $ra, 4($sp) # 4-byte Folded Spill
sw $fp, 0($sp) # 4-byte Folded Spill
move $fp, $sp
andi $1, $5, 3
beqz $1, $BB0_15
nop
Expand Down Expand Up @@ -399,12 +395,8 @@ $BB0_44: #118
lbu $1, 0($5)
sb $1, 0($2)
$BB0_45: #120
move $2, $4
move $sp, $fp
lw $fp, 0($sp) # 4-byte Folded Reload
lw $ra, 4($sp) # 4-byte Folded Reload
jr $ra
addiu $sp, $sp, 8
move $2, $4
.set at
.set macro
.set reorder
Expand Down
51 changes: 0 additions & 51 deletions runtime/entrypoint/src/memory.rs
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112 changes: 49 additions & 63 deletions runtime/entrypoint/src/memset.s
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Original file line number Diff line number Diff line change
Expand Up @@ -217,13 +217,7 @@ memset: # @memset
.set nomacro
.set noat
# %bb.0:
addiu $sp, $sp, -8
sw $ra, 4($sp) # 4-byte Folded Spill
sw $fp, 0($sp) # 4-byte Folded Spill
move $fp, $sp
beqz $6, $BBmemset0_9
nop
# %bb.1:
addu $2, $6, $4
sltiu $1, $6, 3
sb $5, 0($4)
Expand All @@ -242,68 +236,60 @@ memset: # @memset
bnez $1, $BBmemset0_9
sb $5, -4($2)
# %bb.4:
andi $2, $5, 255
negu $1, $4
sll $5, $2, 8
sll $7, $2, 16
andi $1, $1, 3
or $5, $5, $2
sll $2, $2, 24
addu $3, $4, $1
subu $1, $6, $1
or $5, $7, $5
or $2, $2, $5
addiu $5, $zero, -4
and $5, $1, $5
sw $2, 0($3)
addu $6, $3, $5
sltiu $1, $5, 9
bnez $1, $BBmemset0_9
sw $2, -4($6)
negu $2, $4
andi $1, $2, 3
addu $2, $4, $1
subu $6, $6, $1
addiu $7, $zero, -4
and $6, $6, $7
andi $5, $5, 255
lui $1, 257
addi $1, $1, 257
mult $5, $1
mflo $5
sw $5, 0($2)
addu $1, $2, $6
sltiu $3, $6, 9
bnez $3, $BBmemset0_9
sw $5, -4($1)
# %bb.5:
sltiu $1, $5, 25
sw $2, 8($3)
sw $2, 4($3)
sw $2, -8($6)
bnez $1, $BBmemset0_9
sw $2, -12($6)
sltiu $3, $6, 25
sw $5, 8($2)
sw $5, 4($2)
sw $5, -8($1)
bnez $3, $BBmemset0_9
sw $5, -12($1)
# %bb.6:
andi $1, $3, 4
sw $2, 24($3)
sw $2, 20($3)
sw $2, 16($3)
sw $2, 12($3)
sw $2, -16($6)
sw $2, -20($6)
sw $2, -24($6)
sw $2, -28($6)
ori $6, $1, 24
subu $5, $5, $6
sltiu $1, $5, 32
bnez $1, $BBmemset0_9
nop
# %bb.7:
addu $3, $3, $6
sw $5, 24($2)
sw $5, 20($2)
sw $5, 16($2)
sw $5, 12($2)
sw $5, -16($1)
sw $5, -20($1)
sw $5, -24($1)
andi $3, $2, 4
ori $3, $3, 24
subu $6, $6, $3
sltiu $7, $6, 32
bnez $7, $BBmemset0_9
sw $5, -28($1)
add $2, $2, $3
$BBmemset0_8: # =>This Inner Loop Header: Depth=1
addiu $5, $5, -32
sw $2, 24($3)
sw $2, 16($3)
sw $2, 8($3)
sw $2, 0($3)
sw $2, 28($3)
sw $2, 20($3)
sw $2, 12($3)
sw $2, 4($3)
sltiu $1, $5, 32
sw $5, 24($2)
sw $5, 16($2)
sw $5, 8($2)
sw $5, 0($2)
sw $5, 28($2)
sw $5, 20($2)
sw $5, 12($2)
sw $5, 4($2)
addiu $6, $6, -32
sltiu $1, $6, 32
beqz $1, $BBmemset0_8
addiu $3, $3, 32
addiu $2, $2, 32
$BBmemset0_9:
move $2, $4
move $sp, $fp
lw $fp, 0($sp) # 4-byte Folded Reload
lw $ra, 4($sp) # 4-byte Folded Reload
jr $ra
addiu $sp, $sp, 8
move $2, $4
.set at
.set macro
.set reorder
Expand All @@ -313,4 +299,4 @@ $memset_func_end0:
# -- End function
.ident "clang version 10.0.0-4ubuntu1 "
.section ".note.GNU-stack","",@progbits
.addrsig
.addrsig
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