1 files changed, 35 insertions, 0 deletions
diff --git a/llvm/test/Transforms/IndVarSimplify/inner-loop-by-latch-cond.ll b/llvm/test/Transforms/IndVarSimplify/inner-loop-by-latch-cond.ll
new file mode 100644
index 00000000000..1e0c0ddef85
--- /dev/null
+++ b/llvm/test/Transforms/IndVarSimplify/inner-loop-by-latch-cond.ll
@@ -0,0 +1,35 @@
+; RUN: opt < %s -indvars -S | FileCheck %s
+
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128-ni:1"
+target triple = "x86_64-unknown-linux-gnu"
+
+declare void @foo(i64)
+
+; CHECK-LABEL: @test
+define void @test(i64 %a) {
+entry:
+  br label %outer_header
+
+outer_header:
+  %i = phi i64 [20, %entry], [%i.next, %outer_latch]
+  %i.next = add nuw nsw i64 %i, 1
+  br label %inner_header
+
+inner_header:
+  %j = phi i64 [1, %outer_header], [%j.next, %inner_header]
+  %cmp = icmp ult i64 %j, %i.next
+; CHECK-NOT: select
+  %s = select i1 %cmp, i64 %j, i64 %i
+; CHECK: call void @foo(i64 %j)
+  call void @foo(i64 %s)
+  %j.next = add nuw nsw i64 %j, 1
+  %cond = icmp ult i64 %j, %i
+  br i1 %cond, label %inner_header, label %outer_latch
+
+outer_latch:
+  %cond2 = icmp ne i64 %i.next, 40
+  br i1 %cond2, label %outer_header, label %return
+
+return:
+  ret void
+}