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-rw-r--r--test/lit/passes/coalesce-locals-gc.wast38
1 files changed, 36 insertions, 2 deletions
diff --git a/test/lit/passes/coalesce-locals-gc.wast b/test/lit/passes/coalesce-locals-gc.wast
index 29dffb5bd..1a830b4a5 100644
--- a/test/lit/passes/coalesce-locals-gc.wast
+++ b/test/lit/passes/coalesce-locals-gc.wast
@@ -155,8 +155,10 @@
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: (drop
- ;; CHECK-NEXT: (i31.new
- ;; CHECK-NEXT: (i32.const 0)
+ ;; CHECK-NEXT: (block (result i31ref)
+ ;; CHECK-NEXT: (i31.new
+ ;; CHECK-NEXT: (i32.const 0)
+ ;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
;; CHECK-NEXT: )
@@ -216,4 +218,36 @@
)
)
)
+
+ ;; CHECK: (func $replace-i31-local (type $none_=>_i32) (result i32)
+ ;; CHECK-NEXT: (local $0 i31ref)
+ ;; CHECK-NEXT: (i32.add
+ ;; CHECK-NEXT: (unreachable)
+ ;; CHECK-NEXT: (ref.is_i31
+ ;; CHECK-NEXT: (ref.cast null i31
+ ;; CHECK-NEXT: (block (result i31ref)
+ ;; CHECK-NEXT: (i31.new
+ ;; CHECK-NEXT: (i32.const 0)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ (func $replace-i31-local (result i32)
+ (local $local i31ref)
+ (i32.add
+ (unreachable)
+ (ref.test i31
+ (ref.cast null i31
+ ;; This local.get is in unreachable code, and coalesce-locals will remove
+ ;; it in order to avoid using the local index at all. While doing so it
+ ;; must emit something of the exact same type so validation still works
+ ;; (we can't turn this into a non-nullable reference, in particular - that
+ ;; would hit a validation error as the cast outside of us is nullable).
+ (local.get $local)
+ )
+ )
+ )
+ )
)