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-rw-r--r--test/lit/passes/signature-pruning.wast49
1 files changed, 49 insertions, 0 deletions
diff --git a/test/lit/passes/signature-pruning.wast b/test/lit/passes/signature-pruning.wast
index cad9af82b..c273d1588 100644
--- a/test/lit/passes/signature-pruning.wast
+++ b/test/lit/passes/signature-pruning.wast
@@ -1151,3 +1151,52 @@
)
)
)
+
+;; $exported is exported. The entire rec group becomes exported as well, which
+;; causes $unused-param's type to be public, which means we cannot normally
+;; modify it. However, in closed world we allow such changes, and we can remove
+;; the unused param there. What happens is that we keep the original public rec
+;; group as-is, and add a new rec group for private types, put the pruned type
+;; there, and use that pruned type on $unused-param.
+(module
+ (rec
+ ;; CHECK: (rec
+ ;; CHECK-NEXT: (type $much (func))
+
+ ;; CHECK: (type $1 (func))
+
+ ;; CHECK: (rec
+ ;; CHECK-NEXT: (type $none (func))
+ (type $none (func))
+ ;; CHECK: (type $much (func (param i32)))
+ (type $much (func (param i32)))
+ )
+
+ ;; CHECK: (export "exported" (func $exported))
+
+ ;; CHECK: (func $exported (type $none)
+ ;; CHECK-NEXT: (nop)
+ ;; CHECK-NEXT: )
+ (func $exported (export "exported") (type $none)
+ )
+
+ ;; CHECK: (func $unused-param (type $much)
+ ;; CHECK-NEXT: (local $0 i32)
+ ;; CHECK-NEXT: (local.set $0
+ ;; CHECK-NEXT: (i32.const 0)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (nop)
+ ;; CHECK-NEXT: )
+ (func $unused-param (type $much) (param $param i32)
+ )
+
+ ;; CHECK: (func $caller (type $1)
+ ;; CHECK-NEXT: (call $unused-param)
+ ;; CHECK-NEXT: )
+ (func $caller
+ (call $unused-param
+ (i32.const 0)
+ )
+ )
+)
+