Files
wasmtime/cranelift/filetests/filetests/alias/fence.clif
Nick Fitzgerald c0b587ac5f Remove heaps from core Cranelift, push them into cranelift-wasm (#5386)
* cranelift-wasm: translate Wasm loads into lower-level CLIF operations

Rather than using `heap_{load,store,addr}`.

* cranelift: Remove the `heap_{addr,load,store}` instructions

These are now legalized in the `cranelift-wasm` frontend.

* cranelift: Remove the `ir::Heap` entity from CLIF

* Port basic memory operation tests to .wat filetests

* Remove test for verifying CLIF heaps

* Remove `heap_addr` from replace_branching_instructions_and_cfg_predecessors.clif test

* Remove `heap_addr` from readonly.clif test

* Remove `heap_addr` from `table_addr.clif` test

* Remove `heap_addr` from the simd-fvpromote_low.clif test

* Remove `heap_addr` from simd-fvdemote.clif test

* Remove `heap_addr` from the load-op-store.clif test

* Remove the CLIF heap runtest

* Remove `heap_addr` from the global_value.clif test

* Remove `heap_addr` from fpromote.clif runtests

* Remove `heap_addr` from fdemote.clif runtests

* Remove `heap_addr` from memory.clif parser test

* Remove `heap_addr` from reject_load_readonly.clif test

* Remove `heap_addr` from reject_load_notrap.clif test

* Remove `heap_addr` from load_readonly_notrap.clif test

* Remove `static-heap-without-guard-pages.clif` test

Will be subsumed when we port `make-heap-load-store-tests.sh` to generating
`.wat` tests.

* Remove `static-heap-with-guard-pages.clif` test

Will be subsumed when we port `make-heap-load-store-tests.sh` over to `.wat`
tests.

* Remove more heap tests

These will be subsumed by porting `make-heap-load-store-tests.sh` over to `.wat`
tests.

* Remove `heap_addr` from `simple-alias.clif` test

* Remove `heap_addr` from partial-redundancy.clif test

* Remove `heap_addr` from multiple-blocks.clif test

* Remove `heap_addr` from fence.clif test

* Remove `heap_addr` from extends.clif test

* Remove runtests that rely on heaps

Heaps are not a thing in CLIF or the interpreter anymore

* Add generated load/store `.wat` tests

* Enable memory-related wasm features in `.wat` tests

* Remove CLIF heap from fcmp-mem-bug.clif test

* Add a mode for compiling `.wat` all the way to assembly in filetests

* Also generate WAT to assembly tests in `make-load-store-tests.sh`

* cargo fmt

* Reinstate `f{de,pro}mote.clif` tests without the heap bits

* Remove undefined doc link

* Remove outdated SVG and dot file from docs

* Add docs about `None` returns for base address computation helpers

* Factor out `env.heap_access_spectre_mitigation()` to a local

* Expand docs for `FuncEnvironment::heaps` trait method

* Restore f{de,pro}mote+load clif runtests with stack memory
2022-12-15 00:26:45 +00:00

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test alias-analysis
set opt_level=speed
target aarch64
;; Test that certain instructions act as fences that inhibit alias
;; analysis to move accesses across them.
function %f0(i64 vmctx, i32) -> i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 {
gv0 = vmctx
gv1 = load.i64 notrap readonly aligned gv0+8
block0(v0: i64, v1: i32):
v2 = global_value.i64 gv1
v3 = load.i32 v2+8
v4 = load.i32 vmctx v0+16
atomic_store.i32 v1, v0
v5 = load.i32 vmctx v0+16
; check: v5 = load.i32 vmctx v0+16
v6 = atomic_cas.i32 v0, v1, v1
v7 = load.i32 vmctx v0+16
; check: v7 = load.i32 vmctx v0+16
fence
v8 = load.i32 vmctx v0+16
; check: v8 = load.i32 vmctx v0+16
v9 = atomic_rmw.i32 add v0, v1
v10 = load.i32 vmctx v0+16
; check: v10 = load.i32 vmctx v0+16
v11 = atomic_load.i32 v0
v12 = load.i32 vmctx v0+16
; check: v12 = load.i32 vmctx v0+16
return v3, v4, v5, v6, v7, v8, v9, v10, v11, v12
}