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-rw-r--r--test/lit/passes/reorder-globals.wast294
1 files changed, 294 insertions, 0 deletions
diff --git a/test/lit/passes/reorder-globals.wast b/test/lit/passes/reorder-globals.wast
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+;; NOTE: Assertions have been generated by update_lit_checks.py and should not be edited.
+;; RUN: foreach %s %t wasm-opt --reorder-globals-always -S -o - | filecheck %s
+;; RUN: foreach %s %t wasm-opt --reorder-globals-always --roundtrip -S -o - | filecheck %s
+
+;; Also check roundtripping here, so verify we don't end up emitting invalid
+;; binaries.
+
+;; Global $b has more uses, so it should be sorted first.
+(module
+
+ ;; CHECK: (global $b i32 (i32.const 20))
+
+ ;; CHECK: (global $a i32 (i32.const 10))
+ (global $a i32 (i32.const 10))
+ (global $b i32 (i32.const 20))
+
+ ;; CHECK: (func $uses
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (global.get $b)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ (func $uses
+ (drop
+ (global.get $b)
+ )
+ )
+)
+
+;; As above, but now with global.sets. Again $b should be sorted first.
+(module
+
+ ;; CHECK: (global $b (mut i32) (i32.const 20))
+
+ ;; CHECK: (global $a (mut i32) (i32.const 10))
+ (global $a (mut i32) (i32.const 10))
+ (global $b (mut i32) (i32.const 20))
+
+ ;; CHECK: (func $uses
+ ;; CHECK-NEXT: (global.set $b
+ ;; CHECK-NEXT: (i32.const 30)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (global.set $b
+ ;; CHECK-NEXT: (i32.const 40)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (global.get $a)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ (func $uses
+ (global.set $b
+ (i32.const 30)
+ )
+ (global.set $b
+ (i32.const 40)
+ )
+ (drop
+ (global.get $a)
+ )
+ )
+)
+
+;; As above, but flipped so now $a has more, and should remain first.
+(module
+ ;; CHECK: (global $a (mut i32) (i32.const 10))
+ (global $a (mut i32) (i32.const 10))
+ ;; CHECK: (global $b (mut i32) (i32.const 20))
+ (global $b (mut i32) (i32.const 20))
+
+ ;; CHECK: (func $uses
+ ;; CHECK-NEXT: (global.set $a
+ ;; CHECK-NEXT: (i32.const 30)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (global.set $a
+ ;; CHECK-NEXT: (i32.const 40)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (global.get $b)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ (func $uses
+ (global.set $a
+ (i32.const 30)
+ )
+ (global.set $a
+ (i32.const 40)
+ )
+ (drop
+ (global.get $b)
+ )
+ )
+)
+
+;; $b has more uses, but it depends on $a and cannot be sorted before it.
+(module
+ ;; CHECK: (global $a i32 (i32.const 10))
+ (global $a i32 (i32.const 10))
+ ;; CHECK: (global $b i32 (global.get $a))
+ (global $b i32 (global.get $a))
+
+ ;; CHECK: (func $uses
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (global.get $b)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ (func $uses
+ (drop
+ (global.get $b)
+ )
+ )
+)
+
+;; $c has more uses, but it depends on $b and $a and cannot be sorted before
+;; them. Likewise $b cannot be before $a.
+(module
+ ;; CHECK: (global $a i32 (i32.const 10))
+ (global $a i32 (i32.const 10))
+ ;; CHECK: (global $b i32 (global.get $a))
+ (global $b i32 (global.get $a))
+ ;; CHECK: (global $c i32 (global.get $b))
+ (global $c i32 (global.get $b))
+
+ ;; CHECK: (func $uses
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (global.get $b)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (global.get $c)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (global.get $c)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ (func $uses
+ (drop
+ (global.get $b)
+ )
+ (drop
+ (global.get $c)
+ )
+ (drop
+ (global.get $c)
+ )
+ )
+)
+
+;; As above, but without dependencies, so now $c is first and then $b.
+(module
+
+
+ ;; CHECK: (global $c i32 (i32.const 30))
+
+ ;; CHECK: (global $b i32 (i32.const 20))
+
+ ;; CHECK: (global $a i32 (i32.const 10))
+ (global $a i32 (i32.const 10))
+ (global $b i32 (i32.const 20))
+ (global $c i32 (i32.const 30))
+
+ ;; CHECK: (func $uses
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (global.get $b)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (global.get $c)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (global.get $c)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ (func $uses
+ (drop
+ (global.get $b)
+ )
+ (drop
+ (global.get $c)
+ )
+ (drop
+ (global.get $c)
+ )
+ )
+)
+
+;; As above, but a mixed case: $b depends on $a but $c has no dependencies. $c
+;; can be first.
+(module
+
+ ;; CHECK: (global $c i32 (i32.const 30))
+
+ ;; CHECK: (global $a i32 (i32.const 10))
+ (global $a i32 (i32.const 10))
+ ;; CHECK: (global $b i32 (global.get $a))
+ (global $b i32 (global.get $a))
+ (global $c i32 (i32.const 30))
+
+ ;; CHECK: (func $uses
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (global.get $b)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (global.get $c)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (global.get $c)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ (func $uses
+ (drop
+ (global.get $b)
+ )
+ (drop
+ (global.get $c)
+ )
+ (drop
+ (global.get $c)
+ )
+ )
+)
+
+;; Another mixed case, now with $c depending on $b. $b can be before $a.
+(module
+
+
+ ;; CHECK: (global $b i32 (i32.const 20))
+
+ ;; CHECK: (global $c i32 (global.get $b))
+
+ ;; CHECK: (global $a i32 (i32.const 10))
+ (global $a i32 (i32.const 10))
+ (global $b i32 (i32.const 20))
+ (global $c i32 (global.get $b))
+
+ ;; CHECK: (func $uses
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (global.get $b)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (global.get $c)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (global.get $c)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ (func $uses
+ (drop
+ (global.get $b)
+ )
+ (drop
+ (global.get $c)
+ )
+ (drop
+ (global.get $c)
+ )
+ )
+)
+
+;; $b has more uses, but $a is an import and must remain first.
+(module
+ ;; CHECK: (import "a" "b" (global $a i32))
+ (import "a" "b" (global $a i32))
+ ;; CHECK: (global $b i32 (i32.const 10))
+ (global $b i32 (i32.const 10))
+
+ ;; CHECK: (func $uses
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (global.get $b)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ (func $uses
+ (drop
+ (global.get $b)
+ )
+ )
+)
+
+;; As above, but with a and b's names flipped, to check that the names do not
+;; matter, and we keep imports first.
+(module
+ ;; CHECK: (import "a" "b" (global $b i32))
+ (import "a" "b" (global $b i32))
+
+ ;; CHECK: (global $a i32 (i32.const 10))
+ (global $a i32 (i32.const 10))
+
+ ;; CHECK: (func $uses
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (global.get $a)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ (func $uses
+ (drop
+ (global.get $a)
+ )
+ )
+)
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