[llvm] 71fcc82 - [NFC][StructurizeCFG] Add a test that can crash StructurizeCFG pass (#126087)

[via llvm-commits]

Author: Shilei Tian
Date: 2025-02-10T11:12:54-05:00
New Revision: 71fcc825b4e271b7608b54de27ae69fe70f00fad

URL: https://github.com/llvm/llvm-project/commit/71fcc825b4e271b7608b54de27ae69fe70f00fad
DIFF: https://github.com/llvm/llvm-project/commit/71fcc825b4e271b7608b54de27ae69fe70f00fad.diff

LOG: [NFC][StructurizeCFG] Add a test that can crash StructurizeCFG pass (#126087)

I tried to fix it in #124051 but failed to do so. This PR adds the test
and
marks it as xfail.

Added: 
    llvm/test/Transforms/StructurizeCFG/simple-structurizecfg-crash.ll

Modified: 
    

Removed: 
    


################################################################################
diff  --git a/llvm/test/Transforms/StructurizeCFG/simple-structurizecfg-crash.ll b/llvm/test/Transforms/StructurizeCFG/simple-structurizecfg-crash.ll
new file mode 100644
index 000000000000000..c78985b12619ba1
--- /dev/null
+++ b/llvm/test/Transforms/StructurizeCFG/simple-structurizecfg-crash.ll
@@ -0,0 +1,19 @@
+; RUN: opt -S -passes=structurizecfg %s -o -
+; XFAIL: *
+
+; Issue tracking: https://github.com/llvm/llvm-project/issues/126534.
+; FIXME: This test is expected to crash. Generate checklines after the crash is fixed.
+
+define void @foo() {
+entry:
+  br i1 false, label %cond.true, label %cond.false
+
+cond.true:                                        ; preds = %entry
+  br label %cond.end
+
+cond.false:                                       ; preds = %entry
+  br label %cond.end
+
+cond.end:                                         ; preds = %cond.false, %cond.true
+  ret void
+}