summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--src/ir/branch-utils.h2
-rw-r--r--test/passes/code-folding.txt22
-rw-r--r--test/passes/code-folding.wast21
3 files changed, 44 insertions, 1 deletions
diff --git a/src/ir/branch-utils.h b/src/ir/branch-utils.h
index e8fd25119..b9448e590 100644
--- a/src/ir/branch-utils.h
+++ b/src/ir/branch-utils.h
@@ -95,7 +95,7 @@ inline std::set<Name> getExitingBranches(Expression* ast) {
targets.insert(curr->name);
}
void visitSwitch(Switch* curr) {
- for (auto target : targets) {
+ for (auto target : curr->targets) {
targets.insert(target);
}
targets.insert(curr->default_);
diff --git a/test/passes/code-folding.txt b/test/passes/code-folding.txt
index 4b512940c..0fe3aa144 100644
--- a/test/passes/code-folding.txt
+++ b/test/passes/code-folding.txt
@@ -142,6 +142,7 @@
)
(module
(type $0 (func))
+ (type $1 (func (param i32)))
(global $global$0 (mut i32) (i32.const 10))
(func $determinism (; 0 ;) (type $0)
(block $folding-inner0
@@ -181,4 +182,25 @@
)
(unreachable)
)
+ (func $careful-of-the-switch (; 1 ;) (type $1) (param $0 i32)
+ (block $label$1
+ (block $label$3
+ (block $label$5
+ (block $label$7
+ (br_table $label$3 $label$7
+ (i32.const 0)
+ )
+ )
+ (br $label$1)
+ )
+ (block $label$8
+ (br_table $label$3 $label$8
+ (i32.const 0)
+ )
+ )
+ (br $label$1)
+ )
+ (unreachable)
+ )
+ )
)
diff --git a/test/passes/code-folding.wast b/test/passes/code-folding.wast
index a813f44a6..d9c1cc950 100644
--- a/test/passes/code-folding.wast
+++ b/test/passes/code-folding.wast
@@ -198,5 +198,26 @@
)
(unreachable)
)
+ (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)
+ )
+ )
)