1 files changed, 37 insertions, 0 deletions
diff --git a/test/CodeGen/X86/misched-aa-mmos.ll b/test/CodeGen/X86/misched-aa-mmos.ll
new file mode 100644
index 0000000..343e26f
--- /dev/null
+++ b/test/CodeGen/X86/misched-aa-mmos.ll
@@ -0,0 +1,37 @@
+; RUN: llc -enable-misched -enable-aa-sched-mi < %s
+
+; This generates a decw instruction, which has two MMOs, and an alias SU edge
+; query involving that instruction. Make sure this does not crash.
+
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+%s1 = type { i16, i16, i32 }
+%c1 = type { %s1*, %u1, i16, i8 }
+%u1 = type { i64 }
+
+declare zeroext i1 @bar(i64*, i32) #5
+
+define i32 @foo() #0 align 2 {
+entry:
+  %temp_rhs = alloca %c1, align 8
+  br i1 undef, label %if.else56, label %cond.end.i
+
+cond.end.i:
+  %significand.i18.i = getelementptr inbounds %c1* %temp_rhs, i64 0, i32 1
+  %exponent.i = getelementptr inbounds %c1* %temp_rhs, i64 0, i32 2
+  %0 = load i16* %exponent.i, align 8
+  %sub.i = add i16 %0, -1
+  store i16 %sub.i, i16* %exponent.i, align 8
+  %parts.i.i = bitcast %u1* %significand.i18.i to i64**
+  %1 = load i64** %parts.i.i, align 8
+  %call5.i = call zeroext i1 @bar(i64* %1, i32 undef) #1
+  unreachable
+
+if.else56:
+  unreachable
+}
+
+attributes #0 = { nounwind uwtable }
+attributes #1 = { nounwind }
+