1 files changed, 41 insertions, 0 deletions
diff --git a/test/Transforms/IndVarSimplify/preserve-gep-loop-variant.ll b/test/Transforms/IndVarSimplify/preserve-gep-loop-variant.ll
new file mode 100644
index 0000000..86e90c7
--- /dev/null
+++ b/test/Transforms/IndVarSimplify/preserve-gep-loop-variant.ll
@@ -0,0 +1,41 @@
+; RUN: opt < %s -indvars -S > %t
+; RUN: not grep inttoptr %t
+; RUN: not grep ptrtoint %t
+; RUN: grep scevgep %t
+
+; Indvars shouldn't need inttoptr/ptrtoint to expand an address here.
+
+define void @foo(i8* %p) nounwind {
+entry:
+  br i1 true, label %bb.nph, label %for.end
+
+for.cond:
+  %phitmp = icmp slt i64 %inc, 20
+  br i1 %phitmp, label %for.body, label %for.cond.for.end_crit_edge
+
+for.cond.for.end_crit_edge:
+  br label %for.end
+
+bb.nph:
+  br label %for.body
+
+for.body:
+  %storemerge1 = phi i64 [ %inc, %for.cond ], [ 0, %bb.nph ]
+  %call = tail call i64 @bar() nounwind
+  %call2 = tail call i64 @car() nounwind
+  %conv = trunc i64 %call2 to i8
+  %conv3 = sext i8 %conv to i64
+  %add = add nsw i64 %call, %storemerge1
+  %add4 = add nsw i64 %add, %conv3
+  %arrayidx = getelementptr inbounds i8* %p, i64 %add4
+  store i8 0, i8* %arrayidx
+  %inc = add nsw i64 %storemerge1, 1
+  br label %for.cond
+
+for.end:
+  ret void
+}
+
+declare i64 @bar()
+
+declare i64 @car()