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Always add a null function at table index zero

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This allows function references (a table index internally) to be nullable
This commit is contained in:
dcodeIO
2018-09-17 01:48:35 +02:00
parent 9613d29d93
commit 16d1a833dd
170 changed files with 973 additions and 368 deletions
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18
tests/compiler/std/gc-basics.untouched.wat
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@ -29,10 +29,10 @@
(global $std/gc-basics/obj2 (mut i32) (i32.const 0))
(global $~started (mut i32) (i32.const 0))
(global $HEAP_BASE i32 (i32.const 60))
(table 3 3 anyfunc)
(elem (i32.const 0) $std/gc-basics/MyObject_visit $~lib/collector/itcm/__gc_mark $~lib/string/String~gc)
(table 4 4 anyfunc)
(elem (i32.const 0) $null $std/gc-basics/MyObject_visit $~lib/collector/itcm/__gc_mark $~lib/string/String~gc)
(memory $0 1)
(data (i32.const 8) "\00\00\00\00\00\00\00\00\02\00\00\00\00\00\00\00\10\00\00\00s\00t\00d\00/\00g\00c\00-\00b\00a\00s\00i\00c\00s\00.\00t\00s\00")
(data (i32.const 8) "\00\00\00\00\00\00\00\00\03\00\00\00\00\00\00\00\10\00\00\00s\00t\00d\00/\00g\00c\00-\00b\00a\00s\00i\00c\00s\00.\00t\00s\00")
(export "memory" (memory $0))
(export "table" (table $0))
(export "main" (func $std/gc-basics/main))
@ -407,7 +407,7 @@
)
(block
(call $~iterateRoots
(i32.const 1)
(i32.const 2)
)
(set_global $~lib/collector/itcm/state
(get_global $~lib/collector/itcm/State.MARK)
@ -453,7 +453,7 @@
)
(block
(call $~iterateRoots
(i32.const 1)
(i32.const 2)
)
(set_local $0
(call $~lib/collector/itcm/ManagedObject#get:next
@ -683,7 +683,7 @@
(set_global $std/gc-basics/obj
(call $~lib/collector/itcm/__gc_allocate
(i32.const 4)
(i32.const 0)
(i32.const 1)
)
)
(i32.store
@ -757,7 +757,7 @@
(i32.eqz
(i32.eq
(get_local $3)
(i32.const 0)
(i32.const 1)
)
)
(block
@ -821,7 +821,9 @@
)
(call $~lib/gc/gc.collect)
)
(func $~iterateRoots (; 20 ;) (type $iv) (param $0 i32)
(func $null (; 20 ;) (type $v)
)
(func $~iterateRoots (; 21 ;) (type $iv) (param $0 i32)
(call_indirect (type $iv)
(get_global $std/gc-basics/obj)
(get_local $0)