1 files changed, 36 insertions, 0 deletions
diff --git a/llvm/test/Transforms/SCCP/preserve-analysis.ll b/llvm/test/Transforms/SCCP/preserve-analysis.ll
new file mode 100644
index 00000000000..52d2941d81b
--- /dev/null
+++ b/llvm/test/Transforms/SCCP/preserve-analysis.ll
@@ -0,0 +1,36 @@
+; RUN: opt < %s -debug-pass=Structure -globals-aa -loop-vectorize -sccp -loop-vectorize -globals-aa 2>&1 -S | FileCheck %s
+; RUN: opt < %s -debug-pass-manager -passes='loop-vectorize,sccp,loop-vectorize' 2>&1 -S | FileCheck --check-prefix=NEW-PM %s
+
+; Check CFG-only analysis are preserved by SCCP by running it between 2
+; loop-vectorize runs.
+
+; CHECK: Globals Alias Analysis
+; CHECK: Dominator Tree Construction
+; CHECK: Natural Loop Information
+; CHECK: Basic Alias Analysis (stateless AA impl)
+; CHECK: Sparse Conditional Constant Propagation
+; CHECK-NOT: Dominator Tree Construction
+; CHECK-NOT: Natural Loop Information
+; CHECK-NOT: Basic Alias Analysis (stateless AA impl)
+; CHECK-NOT: Globals Alias Analysis
+; CHECK: Loop Vectorization
+
+; NEW-PM-DAG: Running analysis: LoopAnalysis on test
+; NEW-PM-DAG: Running analysis: DominatorTreeAnalysis on test
+; NEW-PM-DAG: Running analysis: AssumptionAnalysis on test
+; NEW-PM-DAG: Running analysis: TargetLibraryAnalysis on test
+; NEW-PM-DAG: Running analysis: TargetIRAnalysis on test
+; NEW-PM: Running pass: SCCPPass on test
+; NEW-PM-NOT: Running analysis: LoopAnalysis on test
+; NEW-PM-NOT: Running analysis: DominatorTreeAnalysis on test
+; NEW-PM-NOT: Running analysis: AssumptionAnalysis on test
+; NEW-PM-NOT: Running analysis: TargetLibraryAnalysis on test
+; NEW-PM-NOT: Running analysis: TargetIRAnalysis on test
+; NEW-PM: Finished llvm::Function pass manager run.
+
+
+define i32 @test() {
+entry:
+  %res = add i32 1, 10
+  ret i32 %res
+}