diff options
Diffstat (limited to 'test/lit/passes')
| -rw-r--r-- | test/lit/passes/vacuum-strings.wast | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/test/lit/passes/vacuum-strings.wast b/test/lit/passes/vacuum-strings.wast new file mode 100644 index 000000000..6925d52e6 --- /dev/null +++ b/test/lit/passes/vacuum-strings.wast @@ -0,0 +1,84 @@ +;; NOTE: Assertions have been generated by update_lit_checks.py and should not be edited. +;; RUN: wasm-opt %s --vacuum -all -S -o - | filecheck %s + +(module + ;; CHECK: (func $compare (type $0) + ;; CHECK-NEXT: (drop + ;; CHECK-NEXT: (string.compare + ;; CHECK-NEXT: (string.const "hello") + ;; CHECK-NEXT: (ref.null none) + ;; CHECK-NEXT: ) + ;; CHECK-NEXT: ) + ;; CHECK-NEXT: (drop + ;; CHECK-NEXT: (string.compare + ;; CHECK-NEXT: (ref.null none) + ;; CHECK-NEXT: (string.const "world") + ;; CHECK-NEXT: ) + ;; CHECK-NEXT: ) + ;; CHECK-NEXT: (drop + ;; CHECK-NEXT: (string.compare + ;; CHECK-NEXT: (ref.null none) + ;; CHECK-NEXT: (ref.null none) + ;; CHECK-NEXT: ) + ;; CHECK-NEXT: ) + ;; CHECK-NEXT: ) + (func $compare + ;; We cannot vacuum away compares that might trap. + (drop + (string.compare + (string.const "hello") + (string.const "world") + ) + ) + (drop + (string.compare + (string.const "hello") + (ref.null none) + ) + ) + (drop + (string.compare + (ref.null none) + (string.const "world") + ) + ) + (drop + (string.compare + (ref.null none) + (ref.null none) + ) + ) + ) + + ;; CHECK: (func $eq (type $0) + ;; CHECK-NEXT: (nop) + ;; CHECK-NEXT: ) + (func $eq + ;; Equals, however, never traps so all these can be removed. + (drop + (string.eq + (string.const "hello") + (string.const "world") + ) + ) + (drop + (string.eq + (string.const "hello") + (ref.null none) + ) + ) + (drop + (string.eq + (ref.null none) + (string.const "world") + ) + ) + (drop + (string.eq + (ref.null none) + (ref.null none) + ) + ) + ) +) + |