1 files changed, 50 insertions, 0 deletions
diff --git a/test/Analysis/ScalarEvolution/implied-via-addition.ll b/test/Analysis/ScalarEvolution/implied-via-addition.ll
new file mode 100644
index 000000000000..c9c276cef466
--- /dev/null
+++ b/test/Analysis/ScalarEvolution/implied-via-addition.ll
@@ -0,0 +1,50 @@
+; RUN: opt -indvars -S < %s | FileCheck %s
+
+declare void @use(i1)
+
+declare void @llvm.experimental.guard(i1, ...)
+
+define void @test_01(i8 %t) {
+; CHECK-LABEL: test_01
+ entry:
+  %st = sext i8 %t to i16
+  %cmp1 = icmp slt i16 %st, 42
+  call void(i1, ...) @llvm.experimental.guard(i1 %cmp1) [ "deopt"() ]
+  br label %loop
+
+ loop:
+; CHECK-LABEL: loop
+  %idx = phi i8 [ %t, %entry ], [ %idx.inc, %loop ]
+  %idx.inc = add i8 %idx, 1
+  %c = icmp slt i8 %idx, 42
+; CHECK: call void @use(i1 true)
+  call void @use(i1 %c)
+  %be = icmp slt i8 %idx.inc, 42
+  br i1 %be, label %loop, label %exit
+
+ exit:
+  ret void
+}
+
+define void @test_02(i8 %t) {
+; CHECK-LABEL: test_02
+ entry:
+  %t.ptr = inttoptr i8 %t to i8*
+  %p.42 = inttoptr i8 42 to i8*
+  %cmp1 = icmp slt i8* %t.ptr, %p.42
+  call void(i1, ...) @llvm.experimental.guard(i1 %cmp1) [ "deopt"() ]
+  br label %loop
+
+ loop:
+; CHECK-LABEL: loop
+  %idx = phi i8* [ %t.ptr, %entry ], [ %snext, %loop ]
+  %snext = getelementptr inbounds i8, i8* %idx, i64 1
+  %c = icmp slt i8* %idx, %p.42
+; CHECK: call void @use(i1 true)
+  call void @use(i1 %c)
+  %be = icmp slt i8* %snext, %p.42
+  br i1 %be, label %loop, label %exit
+
+ exit:
+  ret void
+}