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-rw-r--r--test/lit/passes/code-folding.wast523
1 files changed, 523 insertions, 0 deletions
diff --git a/test/lit/passes/code-folding.wast b/test/lit/passes/code-folding.wast
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+++ b/test/lit/passes/code-folding.wast
@@ -0,0 +1,523 @@
+;; NOTE: Assertions have been generated by update_lit_checks.py --all-items and should not be edited.
+;; NOTE: This test was ported using port_passes_tests_to_lit.py and could be cleaned up.
+
+;; RUN: foreach %s %t wasm-opt -all --code-folding -S -o - | filecheck %s
+
+(module
+ ;; CHECK: (type $0 (func))
+
+ ;; CHECK: (type $1 (func (result f32)))
+
+ ;; CHECK: (type $13 (func (param f32)))
+ (type $13 (func (param f32)))
+ (table 282 282 funcref)
+ ;; CHECK: (memory $0 1 1)
+ (memory $0 1 1)
+ ;; CHECK: (table $0 282 282 funcref)
+
+ ;; CHECK: (func $0 (type $0)
+ ;; CHECK-NEXT: (block $label$1
+ ;; CHECK-NEXT: (if
+ ;; CHECK-NEXT: (i32.const 1)
+ ;; CHECK-NEXT: (then
+ ;; CHECK-NEXT: (block $label$3
+ ;; CHECK-NEXT: (call_indirect $0 (type $13)
+ ;; CHECK-NEXT: (block $label$4
+ ;; CHECK-NEXT: (br $label$3)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (i32.const 105)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (nop)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ (func $0
+ (block $label$1
+ (if
+ (i32.const 1)
+ (then
+ (block $label$3
+ (call_indirect (type $13)
+ (block $label$4 (result f32) ;; but this type may change dangerously
+ (nop) ;; fold this
+ (br $label$3)
+ )
+ (i32.const 105)
+ )
+ (nop) ;; with this
+ )
+ )
+ )
+ )
+ )
+ ;; CHECK: (func $negative-zero (type $1) (result f32)
+ ;; CHECK-NEXT: (if (result f32)
+ ;; CHECK-NEXT: (i32.const 0)
+ ;; CHECK-NEXT: (then
+ ;; CHECK-NEXT: (block $label$0 (result f32)
+ ;; CHECK-NEXT: (f32.const 0)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (else
+ ;; CHECK-NEXT: (block $label$1 (result f32)
+ ;; CHECK-NEXT: (f32.const -0)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ (func $negative-zero (result f32)
+ (if (result f32)
+ (i32.const 0)
+ (then
+ (block $label$0 (result f32)
+ (f32.const 0)
+ )
+ )
+ (else
+ (block $label$1 (result f32)
+ (f32.const -0)
+ )
+ )
+ )
+ )
+ ;; CHECK: (func $negative-zero-b (type $1) (result f32)
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (i32.const 0)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (block $label$0 (result f32)
+ ;; CHECK-NEXT: (f32.const -0)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ (func $negative-zero-b (result f32)
+ (if (result f32)
+ (i32.const 0)
+ (then
+ (block $label$0 (result f32)
+ (f32.const -0)
+ )
+ )
+ (else
+ (block $label$1 (result f32)
+ (f32.const -0)
+ )
+ )
+ )
+ )
+ ;; CHECK: (func $negative-zero-c (type $1) (result f32)
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (i32.const 0)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (block $label$0 (result f32)
+ ;; CHECK-NEXT: (f32.const 0)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ (func $negative-zero-c (result f32)
+ (if (result f32)
+ (i32.const 0)
+ (then
+ (block $label$0 (result f32)
+ (f32.const 0)
+ )
+ )
+ (else
+ (block $label$1 (result f32)
+ (f32.const 0)
+ )
+ )
+ )
+ )
+ ;; CHECK: (func $break-target-outside-of-return-merged-code (type $0)
+ ;; CHECK-NEXT: (block $label$A
+ ;; CHECK-NEXT: (if
+ ;; CHECK-NEXT: (unreachable)
+ ;; CHECK-NEXT: (then
+ ;; CHECK-NEXT: (block
+ ;; CHECK-NEXT: (block $label$B
+ ;; CHECK-NEXT: (if
+ ;; CHECK-NEXT: (unreachable)
+ ;; CHECK-NEXT: (then
+ ;; CHECK-NEXT: (br_table $label$A $label$B
+ ;; CHECK-NEXT: (unreachable)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (return)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (else
+ ;; CHECK-NEXT: (block $label$C
+ ;; CHECK-NEXT: (if
+ ;; CHECK-NEXT: (unreachable)
+ ;; CHECK-NEXT: (then
+ ;; CHECK-NEXT: (br_table $label$A $label$C
+ ;; CHECK-NEXT: (unreachable)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (return)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ (func $break-target-outside-of-return-merged-code
+ (block $label$A
+ (if
+ (unreachable)
+ (then
+ (block
+ (block
+ (block $label$B
+ (if
+ (unreachable)
+ (then
+ (br_table $label$A $label$B
+ (unreachable)
+ )
+ )
+ )
+ )
+ (return)
+ )
+ )
+ )
+ (else
+ (block
+ (block $label$C
+ (if
+ (unreachable)
+ (then
+ (br_table $label$A $label$C ;; this all looks mergeable, but $label$A is outside
+ (unreachable)
+ )
+ )
+ )
+ )
+ (return)
+ )
+ )
+ )
+ )
+ )
+ ;; CHECK: (func $break-target-inside-all-good (type $0)
+ ;; CHECK-NEXT: (block $folding-inner0
+ ;; CHECK-NEXT: (block $label$A
+ ;; CHECK-NEXT: (if
+ ;; CHECK-NEXT: (unreachable)
+ ;; CHECK-NEXT: (then
+ ;; CHECK-NEXT: (block
+ ;; CHECK-NEXT: (br $folding-inner0)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (else
+ ;; CHECK-NEXT: (br $folding-inner0)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (block $label$B
+ ;; CHECK-NEXT: (if
+ ;; CHECK-NEXT: (unreachable)
+ ;; CHECK-NEXT: (then
+ ;; CHECK-NEXT: (br_table $label$B $label$B
+ ;; CHECK-NEXT: (unreachable)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (return)
+ ;; CHECK-NEXT: )
+ (func $break-target-inside-all-good
+ (block $label$A
+ (if
+ (unreachable)
+ (then
+ (block
+ (block
+ (block $label$B
+ (if
+ (unreachable)
+ (then
+ (br_table $label$B $label$B
+ (unreachable)
+ )
+ )
+ )
+ )
+ (return)
+ )
+ )
+ )
+ (else
+ (block
+ (block $label$C
+ (if
+ (unreachable)
+ (then
+ (br_table $label$C $label$C ;; this all looks mergeable, and is, B ~~ C
+ (unreachable)
+ )
+ )
+ )
+ )
+ (return)
+ )
+ )
+ )
+ )
+ )
+ ;; CHECK: (func $leave-inner-block-type (type $0)
+ ;; CHECK-NEXT: (block $label$1
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (block $label$2
+ ;; CHECK-NEXT: (block
+ ;; CHECK-NEXT: (unreachable)
+ ;; CHECK-NEXT: (unreachable)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (br $label$1)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (i32.const 1)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ (func $leave-inner-block-type
+ (block $label$1
+ (drop
+ (block $label$2 (result i32) ;; leave this alone (otherwise, if we make it unreachable, we need to do more updating)
+ (br_if $label$2
+ (unreachable)
+ (unreachable)
+ )
+ (drop
+ (i32.const 1)
+ )
+ (br $label$1)
+ )
+ )
+ (drop
+ (i32.const 1)
+ )
+ )
+ )
+)
+(module
+ ;; CHECK: (type $0 (func (result i32)))
+
+ ;; CHECK: (memory $0 1 1 shared)
+ (memory $0 1 1 shared)
+ ;; CHECK: (export "func_2224" (func $0))
+ (export "func_2224" (func $0))
+ ;; CHECK: (func $0 (type $0) (result i32)
+ ;; CHECK-NEXT: (local $var$0 i32)
+ ;; CHECK-NEXT: (if (result i32)
+ ;; CHECK-NEXT: (i32.const 0)
+ ;; CHECK-NEXT: (then
+ ;; CHECK-NEXT: (i32.load offset=22
+ ;; CHECK-NEXT: (local.get $var$0)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (else
+ ;; CHECK-NEXT: (i32.atomic.load offset=22
+ ;; CHECK-NEXT: (local.get $var$0)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ (func $0 (result i32)
+ (local $var$0 i32)
+ (if (result i32)
+ (i32.const 0)
+ (then
+ (i32.load offset=22
+ (local.get $var$0)
+ )
+ )
+ (else
+ (i32.atomic.load offset=22
+ (local.get $var$0)
+ )
+ )
+ )
+ )
+)
+(module
+ ;; CHECK: (type $0 (func))
+ (type $0 (func))
+ ;; CHECK: (type $1 (func (param i32)))
+
+ ;; CHECK: (global $global$0 (mut i32) (i32.const 10))
+ (global $global$0 (mut i32) (i32.const 10))
+ ;; CHECK: (func $determinism (type $0)
+ ;; CHECK-NEXT: (block $folding-inner0
+ ;; CHECK-NEXT: (block
+ ;; CHECK-NEXT: (block $label$1
+ ;; CHECK-NEXT: (br_if $label$1
+ ;; CHECK-NEXT: (i32.const 1)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (br $folding-inner0)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (block $label$2
+ ;; CHECK-NEXT: (br_if $label$2
+ ;; CHECK-NEXT: (i32.const 0)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (if
+ ;; CHECK-NEXT: (global.get $global$0)
+ ;; CHECK-NEXT: (then
+ ;; CHECK-NEXT: (br $folding-inner0)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (unreachable)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (if
+ ;; CHECK-NEXT: (global.get $global$0)
+ ;; CHECK-NEXT: (then
+ ;; CHECK-NEXT: (br $folding-inner0)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (unreachable)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (global.set $global$0
+ ;; CHECK-NEXT: (i32.sub
+ ;; CHECK-NEXT: (global.get $global$0)
+ ;; CHECK-NEXT: (i32.const 1)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (unreachable)
+ ;; CHECK-NEXT: )
+ (func $determinism (; 0 ;) (type $0)
+ (block $label$1
+ (br_if $label$1
+ (i32.const 1)
+ )
+ (global.set $global$0
+ (i32.sub
+ (global.get $global$0)
+ (i32.const 1)
+ )
+ )
+ (unreachable)
+ )
+ (block $label$2
+ (br_if $label$2
+ (i32.const 0)
+ )
+ (if
+ (global.get $global$0)
+ (then
+ (block
+ (global.set $global$0
+ (i32.sub
+ (global.get $global$0)
+ (i32.const 1)
+ )
+ )
+ (unreachable)
+ )
+ )
+ )
+ (unreachable)
+ )
+ (if
+ (global.get $global$0)
+ (then
+ (block
+ (global.set $global$0
+ (i32.sub
+ (global.get $global$0)
+ (i32.const 1)
+ )
+ )
+ (unreachable)
+ )
+ )
+ )
+ (unreachable)
+ )
+ ;; CHECK: (func $careful-of-the-switch (type $1) (param $0 i32)
+ ;; CHECK-NEXT: (block $label$1
+ ;; CHECK-NEXT: (block $label$3
+ ;; CHECK-NEXT: (block $label$5
+ ;; CHECK-NEXT: (block $label$7
+ ;; CHECK-NEXT: (br_table $label$3 $label$7
+ ;; CHECK-NEXT: (i32.const 0)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (br $label$1)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (block $label$8
+ ;; CHECK-NEXT: (br_table $label$3 $label$8
+ ;; CHECK-NEXT: (i32.const 0)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (br $label$1)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (unreachable)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ (func $careful-of-the-switch (param $0 i32)
+ (block $label$1
+ (block $label$3
+ (block $label$5
+ (block $label$7 ;; this is block is equal to $label$8 when accounting for the internal 7/8 difference
+ (br_table $label$3 $label$7 ;; the reference to $label$3 must remain valid, cannot hoist out of it!
+ (i32.const 0)
+ )
+ )
+ (br $label$1)
+ )
+ (block $label$8
+ (br_table $label$3 $label$8
+ (i32.const 0)
+ )
+ )
+ (br $label$1)
+ )
+ (unreachable)
+ )
+ )
+)
+
+(module
+ ;; CHECK: (type $0 (func))
+
+ ;; CHECK: (func $br-on-null (type $0)
+ ;; CHECK-NEXT: (block $block
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (br_on_null $block
+ ;; CHECK-NEXT: (ref.null none)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (drop
+ ;; CHECK-NEXT: (block (result i32)
+ ;; CHECK-NEXT: (call $br-on-null)
+ ;; CHECK-NEXT: (br $block)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: (call $br-on-null)
+ ;; CHECK-NEXT: )
+ ;; CHECK-NEXT: )
+ (func $br-on-null
+ (block $block
+ (drop
+ ;; The other two tails are the same, but this br_on_null should inhibit code
+ ;; folding.
+ (br_on_null $block
+ (ref.null none)
+ )
+ )
+ (drop
+ (block (result i32)
+ (call $br-on-null)
+ (br $block)
+ )
+ )
+ (call $br-on-null)
+ )
+ )
+)
generated by cgit v1.2.3 (git 2.39.1) at 2025-04-05 02:21:17 +0000