1 files changed, 34 insertions, 0 deletions
diff --git a/test/CodeGen/SystemZ/int-cmp-51.ll b/test/CodeGen/SystemZ/int-cmp-51.ll
new file mode 100644
index 000000000000..85a0e4b4d3a7
--- /dev/null
+++ b/test/CodeGen/SystemZ/int-cmp-51.ll
@@ -0,0 +1,34 @@
+; Check that modelling of CC/CCRegs does not stop MachineCSE from
+; removing a compare.  MachineCSE will not extend a live range of an
+; allocatable or reserved phys reg.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+
+declare void @bar(i8)
+
+; Check the low end of the CH range.
+define void @f1(i32 %lhs) {
+; CHECK-LABEL: BB#1:
+; CHECK-NOT: cijlh %r0, 1, .LBB0_3
+
+entry:
+  %and188 = and i32 %lhs, 255
+  %cmp189 = icmp ult i32 %and188, 2
+  br i1 %cmp189, label %if.then.191, label %if.else.201
+
+if.then.191:
+  %cmp194 = icmp eq i32 %and188, 1
+  br i1 %cmp194, label %if.then.196, label %if.else.198
+
+if.then.196:
+  call void @bar(i8 1);
+  br label %if.else.201
+
+if.else.198:
+  call void @bar(i8 0);
+  br label %if.else.201
+
+if.else.201:
+  ret void
+}
+