1 files changed, 54 insertions, 0 deletions
diff --git a/polly/test/ScopInfo/out-of-scop-use-in-region-entry-phi-node-nonaffine-subregion.ll b/polly/test/ScopInfo/out-of-scop-use-in-region-entry-phi-node-nonaffine-subregion.ll
new file mode 100755
index 00000000000..66a15bef510
--- /dev/null
+++ b/polly/test/ScopInfo/out-of-scop-use-in-region-entry-phi-node-nonaffine-subregion.ll
@@ -0,0 +1,54 @@
+; RUN: opt %loadPolly -polly-codegen -S < %s | FileCheck %s
+;
+; Check whether %newval is identified as escaping value, even though it is used
+; in a phi that is in the region. Non-affine subregion case.
+;
+; CHECK-LABEL: subregion_entry.region_entering:
+; CHECK:         %loop_carried.ph = phi float [ %newval.merge, %backedge ], [ undef, %entry ]
+;
+; CHECK-LABEL: polly.merge_new_and_old:
+; CHECK:         %newval.merge = phi float [ %newval.final_reload, %polly.stmt.polly.merge_new_and_old.exit ], [ %newval, %subregion_exit.region_exiting ]
+;
+; CHECK-LABEL: polly.start:
+; CHECK:         store float %loop_carried.ph, float* %loop_carried.phiops
+;
+; CHECK-LABEL: polly.stmt.subregion_entry.entry:
+; CHECK:         %loop_carried.phiops.reload = load float, float* %loop_carried.phiops
+;
+; CHECK-LABEL: polly.stmt.subregion_entry:
+; CHECK:         %polly.loop_carried = phi float [ %loop_carried.phiops.reload2, %polly.stmt.subregion_entry.entry ]
+; CHECK:         %p_newval = fadd float %polly.loop_carried, 1.000000e+00
+;
+; CHECK-LABEL: polly.stmt.polly.merge_new_and_old.exit:
+; CHECK:         %newval.final_reload = load float, float* %newval.s2a
+
+define void @func() {
+entry:
+  br label %subregion_entry
+
+subregion_entry:
+  %loop_carried = phi float [ undef, %entry ], [ %newval, %backedge ]
+  %indvar = phi i32 [ 1, %entry ], [ %indvar_next, %backedge ]
+  %newval = fadd float %loop_carried, 1.0
+  %cmp = fcmp ogt float undef, undef
+  br i1 %cmp, label %subregion_if, label %subregion_exit
+
+subregion_if:
+  br label %subregion_exit
+
+subregion_exit:
+  br i1 undef, label %if_then, label %if_else
+
+if_then:
+  br label %backedge
+
+if_else:
+  br label %backedge
+
+backedge:
+  %indvar_next = add nuw nsw i32 %indvar, 1
+  br i1 false, label %subregion_entry, label %exit
+
+exit:
+  ret void
+}