1 files changed, 33 insertions, 6 deletions
diff --git a/test/Transforms/InstCombine/loadstore-metadata.ll b/test/Transforms/InstCombine/loadstore-metadata.ll
index 863edae..be55fa6 100644
--- a/test/Transforms/InstCombine/loadstore-metadata.ll
+++ b/test/Transforms/InstCombine/loadstore-metadata.ll
@@ -1,5 +1,7 @@
 ; RUN: opt -instcombine -S < %s | FileCheck %s
 
+target datalayout = "e-m:e-p:64:64:64-i64:64-f80:128-n8:16:32:64-S128"
+
 define i32 @test_load_cast_combine_tbaa(float* %ptr) {
 ; Ensure (cast (load (...))) -> (load (cast (...))) preserves TBAA.
 ; CHECK-LABEL: @test_load_cast_combine_tbaa(
@@ -78,9 +80,34 @@ exit:
   ret void
 }
 
-!0 = metadata !{ metadata !1, metadata !1, i64 0 }
-!1 = metadata !{ metadata !1 }
-!2 = metadata !{ metadata !2, metadata !1 }
-!3 = metadata !{ }
-!4 = metadata !{ i32 1 }
-!5 = metadata !{ i32 0, i32 42 }
+define void @test_load_cast_combine_nonnull(float** %ptr) {
+; We can't preserve nonnull metadata when converting a load of a pointer to
+; a load of an integer. Instead, we translate it to range metadata.
+; FIXME: We should also transform range metadata back into nonnull metadata.
+; FIXME: This test is very fragile. If any LABEL lines are added after
+; this point, the test will fail, because this test depends on a metadata tuple,
+; which is always emitted at the end of the file. At some point, we should
+; consider an option to the IR printer to emit MD tuples after the function
+; that first uses them--this will allow us to refer to them like this and not
+; have the tests break. For now, this function must always come last in this
+; file, and no LABEL lines are to be added after this point.
+;
+; CHECK-LABEL: @test_load_cast_combine_nonnull(
+; CHECK: %[[V:.*]] = load i64* %{{.*}}, !range ![[MD:[0-9]+]]
+; CHECK-NOT: !nonnull
+; CHECK: store i64 %[[V]], i64*
+entry:
+  %p = load float** %ptr, !nonnull !3
+  %gep = getelementptr float** %ptr, i32 42
+  store float* %p, float** %gep
+  ret void
+}
+
+; This is the metadata tuple that we reference above:
+; CHECK: ![[MD]] = !{i64 1, i64 0}
+!0 = !{ !1, !1, i64 0 }
+!1 = !{ !1 }
+!2 = !{ !2, !1 }
+!3 = !{ }
+!4 = !{ i32 1 }
+!5 = !{ i32 0, i32 42 }