T0b1/wasmtime
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Support heaps with no offset-guard pages.

Browse Source 
Also, say "guard-offset pages" rather than just "guard pages" to describe the
region of a heap which is never accessible and which exists to support
optimizations for heap accesses with offsets.

And, introduce a `Uimm64` immediate type, and make all heap fields use
`Uimm64` instead of `Imm64` since they really are unsigned.
This commit is contained in:
Dan Gohman
2018-11-29 04:53:30 -08:00
parent 93696a80bb
commit a20c852148
27 changed files with 302 additions and 172 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
cranelift/docs/heapex-dyn.clif
View File

@@ -4,7 +4,7 @@ function %add_members(i32, i64 vmctx) -> f32 baldrdash {
gv0 = vmctx
gv1 = load.i64 notrap aligned gv0+64
gv2 = load.i32 notrap aligned gv0+72
heap0 = dynamic gv1, min 0x1000, bound gv2, guard 0
heap0 = dynamic gv1, min 0x1000, bound gv2, offset_guard 0
ebb0(v0: i32, v6: i64):
v1 = heap_addr.i64 heap0, v0, 20