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Minor string comparision optimizations (#77)

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This commit is contained in:
Max Graey
2018-04-17 00:02:55 +03:00
committed by Daniel Wirtz
parent 1013c21359
commit 6d0b5d92c2
7 changed files with 172 additions and 169 deletions
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179
tests/compiler/std/string.untouched.wat
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@ -211,7 +211,7 @@
(call $abort
(i32.const 0)
(i32.const 72)
(i32.const 234)
(i32.const 231)
(i32.const 4)
)
(unreachable)
@ -469,7 +469,7 @@
(call $abort
(i32.const 0)
(i32.const 72)
(i32.const 213)
(i32.const 210)
(i32.const 4)
)
(unreachable)
@ -1271,7 +1271,7 @@
(call $abort
(i32.const 0)
(i32.const 72)
(i32.const 469)
(i32.const 466)
(i32.const 10)
)
(unreachable)
@ -3770,6 +3770,7 @@
)
(func $~lib/string/String.__eq (; 22 ;) (type $iii) (param $0 i32) (param $1 i32) (result i32)
(local $2 i32)
(local $3 i32)
(if
(i32.eq
(get_local $0)
@ -3780,34 +3781,34 @@
)
)
(if
(i32.eq
(get_local $0)
(i32.const 0)
)
(return
(i32.eq
(get_local $1)
(i32.const 0)
(i32.and
(if (result i32)
(tee_local $2
(i32.eq
(get_local $0)
(i32.const 0)
)
)
(get_local $2)
(i32.eq
(get_local $1)
(i32.const 0)
)
)
)
)
(if
(i32.eq
(get_local $1)
(i32.const 0)
(i32.const 1)
)
(return
(i32.const 0)
)
)
(set_local $2
(set_local $3
(i32.load
(get_local $0)
)
)
(if
(i32.ne
(get_local $2)
(get_local $3)
(i32.load
(get_local $1)
)
@ -3828,7 +3829,7 @@
(i32.const 4)
)
(i32.shl
(get_local $2)
(get_local $3)
(i32.const 1)
)
)
@ -3960,64 +3961,64 @@
)
)
(if
(i32.eq
(get_local $0)
(i32.const 0)
)
(return
(i32.eq
(get_local $1)
(i32.const 0)
(i32.and
(if (result i32)
(tee_local $2
(i32.eq
(get_local $0)
(i32.const 0)
)
)
(get_local $2)
(i32.eq
(get_local $1)
(i32.const 0)
)
)
)
)
(if
(i32.eq
(get_local $1)
(i32.const 0)
(i32.const 1)
)
(return
(i32.const 0)
)
)
(set_local $2
(i32.load
(get_local $0)
)
)
(set_local $3
(i32.load
(get_local $1)
(get_local $0)
)
)
(if
(i32.eqz
(get_local $2)
)
(return
(i32.eqz
(get_local $3)
)
(set_local $4
(i32.load
(get_local $1)
)
)
(if
(i32.eqz
(get_local $3)
)
(return
(i32.eqz
(get_local $4)
)
)
)
(if
(i32.eqz
(get_local $4)
)
(return
(i32.const 1)
)
)
(set_local $6
(select
(tee_local $4
(get_local $2)
)
(tee_local $5
(tee_local $2
(get_local $3)
)
(i32.lt_s
(tee_local $5
(get_local $4)
)
(i32.lt_s
(get_local $2)
(get_local $5)
)
)
@ -4157,64 +4158,64 @@
)
)
(if
(i32.eq
(get_local $0)
(i32.const 0)
)
(return
(i32.eq
(get_local $1)
(i32.const 0)
(i32.and
(if (result i32)
(tee_local $2
(i32.eq
(get_local $0)
(i32.const 0)
)
)
(get_local $2)
(i32.eq
(get_local $1)
(i32.const 0)
)
)
)
)
(if
(i32.eq
(get_local $1)
(i32.const 0)
(i32.const 1)
)
(return
(i32.const 0)
)
)
(set_local $2
(i32.load
(get_local $0)
)
)
(set_local $3
(i32.load
(get_local $0)
)
)
(set_local $4
(i32.load
(get_local $1)
)
)
(if
(i32.eqz
(get_local $4)
)
(return
(i32.eqz
(get_local $3)
)
)
)
(if
(i32.eqz
(get_local $3)
)
(return
(i32.eqz
(get_local $2)
)
)
)
(if
(i32.eqz
(get_local $2)
)
(return
(i32.const 1)
)
)
(set_local $6
(select
(tee_local $4
(get_local $2)
)
(tee_local $5
(tee_local $2
(get_local $3)
)
(i32.lt_s
(tee_local $5
(get_local $4)
)
(i32.lt_s
(get_local $2)
(get_local $5)
)
)
@ -4256,7 +4257,7 @@
(call $abort
(i32.const 0)
(i32.const 72)
(i32.const 386)
(i32.const 383)
(i32.const 4)
)
(unreachable)
@ -4294,7 +4295,7 @@
(call $abort
(i32.const 0)
(i32.const 72)
(i32.const 391)
(i32.const 388)
(i32.const 6)
)
(unreachable)