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Improve inlining where locals can be aliased; Add a crude mechanism for explicit unchecked array accesses

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The `unchecked` builtin should be handled with ultimate care and it would be a lot better if there'd be a mechanism doing this automatically.
This commit is contained in:
dcodeIO
2018-04-25 05:04:35 +02:00
parent 391db28fe2
commit 6d6d1dddcf
47 changed files with 5374 additions and 15672 deletions
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193
tests/compiler/overflow.optimized.wat
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@ -8,7 +8,6 @@
(start $start)
(func $start (; 1 ;) (type $v)
(local $0 i32)
(local $1 i32)
(if
(i32.ne
(tee_local $0
@ -52,23 +51,20 @@
(unreachable)
)
)
(set_local $0
(i32.shr_s
(i32.shl
(i32.add
(tee_local $1
(get_local $0)
)
(i32.const 1)
)
(i32.const 24)
)
(i32.const 24)
)
)
(if
(i32.ne
(get_local $0)
(tee_local $0
(i32.shr_s
(i32.shl
(i32.add
(get_local $0)
(i32.const 1)
)
(i32.const 24)
)
(i32.const 24)
)
)
(i32.const -128)
)
(block
@ -81,23 +77,20 @@
(unreachable)
)
)
(set_local $0
(i32.shr_s
(i32.shl
(i32.sub
(tee_local $1
(get_local $0)
)
(i32.const 1)
)
(i32.const 24)
)
(i32.const 24)
)
)
(if
(i32.ne
(get_local $0)
(tee_local $0
(i32.shr_s
(i32.shl
(i32.sub
(get_local $0)
(i32.const 1)
)
(i32.const 24)
)
(i32.const 24)
)
)
(i32.const 127)
)
(block
@ -278,23 +271,20 @@
(unreachable)
)
)
(set_local $0
(i32.shr_s
(i32.shl
(i32.add
(tee_local $1
(get_local $0)
)
(i32.const 1)
)
(i32.const 16)
)
(i32.const 16)
)
)
(if
(i32.ne
(get_local $0)
(tee_local $0
(i32.shr_s
(i32.shl
(i32.add
(get_local $0)
(i32.const 1)
)
(i32.const 16)
)
(i32.const 16)
)
)
(i32.const -32768)
)
(block
@ -307,23 +297,20 @@
(unreachable)
)
)
(set_local $0
(i32.shr_s
(i32.shl
(i32.sub
(tee_local $1
(get_local $0)
)
(i32.const 1)
)
(i32.const 16)
)
(i32.const 16)
)
)
(if
(i32.ne
(get_local $0)
(tee_local $0
(i32.shr_s
(i32.shl
(i32.sub
(get_local $0)
(i32.const 1)
)
(i32.const 16)
)
(i32.const 16)
)
)
(i32.const 32767)
)
(block
@ -498,20 +485,17 @@
(unreachable)
)
)
(set_local $0
(i32.and
(i32.sub
(tee_local $1
(get_local $0)
)
(i32.const 1)
)
(i32.const 255)
)
)
(if
(i32.ne
(get_local $0)
(tee_local $0
(i32.and
(i32.sub
(get_local $0)
(i32.const 1)
)
(i32.const 255)
)
)
(i32.const 255)
)
(block
@ -524,19 +508,16 @@
(unreachable)
)
)
(set_local $0
(i32.and
(i32.add
(tee_local $1
(get_local $0)
)
(i32.const 1)
)
(i32.const 255)
)
)
(if
(get_local $0)
(tee_local $0
(i32.and
(i32.add
(get_local $0)
(i32.const 1)
)
(i32.const 255)
)
)
(block
(call $abort
(i32.const 0)
@ -691,20 +672,17 @@
(unreachable)
)
)
(set_local $0
(i32.and
(i32.sub
(tee_local $1
(get_local $0)
)
(i32.const 1)
)
(i32.const 65535)
)
)
(if
(i32.ne
(get_local $0)
(tee_local $0
(i32.and
(i32.sub
(get_local $0)
(i32.const 1)
)
(i32.const 65535)
)
)
(i32.const 65535)
)
(block
@ -717,19 +695,16 @@
(unreachable)
)
)
(set_local $0
(i32.and
(i32.add
(tee_local $1
(get_local $0)
)
(i32.const 1)
)
(i32.const 65535)
)
)
(if
(get_local $0)
(tee_local $0
(i32.and
(i32.add
(get_local $0)
(i32.const 1)
)
(i32.const 65535)
)
)
(block
(call $abort
(i32.const 0)