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author | Alon Zakai <azakai@google.com> | 2021-09-16 13:07:31 -0700 |
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committer | GitHub <noreply@github.com> | 2021-09-16 13:07:31 -0700 |
commit | 8e8bce1b59a8d60a35e21798c6aec95e3dcade6b (patch) | |
tree | 395986ea97218394d91360b1657f5317c58d26bc /test/lit/passes/optimize-instructions-gc-iit.wast | |
parent | 433bffa7452906112f89278fcd5bad66bd473ae2 (diff) | |
download | binaryen-8e8bce1b59a8d60a35e21798c6aec95e3dcade6b.tar.gz binaryen-8e8bce1b59a8d60a35e21798c6aec95e3dcade6b.tar.bz2 binaryen-8e8bce1b59a8d60a35e21798c6aec95e3dcade6b.zip |
[Wasm GC] Optimize away ref.as_non_null going into local.set in TNH mode (#4157)
If we can remove such traps, we can remove ref.as_non_null if the local
type is nullable anyhow.
If we support non-nullable locals, however, then do not do this, as it
could inhibit specializing the local type later. Do the same for tees which
we had existing code for.
Background: #4061 (comment)
Diffstat (limited to 'test/lit/passes/optimize-instructions-gc-iit.wast')
-rw-r--r-- | test/lit/passes/optimize-instructions-gc-iit.wast | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/test/lit/passes/optimize-instructions-gc-iit.wast b/test/lit/passes/optimize-instructions-gc-iit.wast index 41d4e69d5..b99042643 100644 --- a/test/lit/passes/optimize-instructions-gc-iit.wast +++ b/test/lit/passes/optimize-instructions-gc-iit.wast @@ -342,4 +342,28 @@ ) ) ) + + ;; CHECK: (func $set-of-as-non-null (param $x anyref) + ;; CHECK-NEXT: (local.set $x + ;; CHECK-NEXT: (local.get $x) + ;; CHECK-NEXT: ) + ;; CHECK-NEXT: ) + ;; NOMNL: (func $set-of-as-non-null (param $x anyref) + ;; NOMNL-NEXT: (local.set $x + ;; NOMNL-NEXT: (local.get $x) + ;; NOMNL-NEXT: ) + ;; NOMNL-NEXT: ) + ;; NOMNL-TNH: (func $set-of-as-non-null (param $x anyref) + ;; NOMNL-TNH-NEXT: (local.set $x + ;; NOMNL-TNH-NEXT: (local.get $x) + ;; NOMNL-TNH-NEXT: ) + ;; NOMNL-TNH-NEXT: ) + (func $set-of-as-non-null (param $x anyref) + ;; As we ignore such traps, we can remove the ref.as here. + (local.set $x + (ref.as_non_null + (local.get $x) + ) + ) + ) ) |