[SystemZ] Add sign-extending high-word loads (LBH and LHH)

[oota-llvm.git] / test / CodeGen / SystemZ / int-cmp-41.ll

diff --git a/test/CodeGen/SystemZ/int-cmp-41.ll b/test/CodeGen/SystemZ/int-cmp-41.ll
index 099681db42a6cf8eb0606251394824b9788c0b2e..77f6e7d76f1c4a0ac0cd5a99577ca039337806ff 100644 (file)
--- a/test/CodeGen/SystemZ/int-cmp-41.ll
+++ b/test/CodeGen/SystemZ/int-cmp-41.ll
@@ -100,3 +100,22 @@ exit:
   %res = phi i64 [ %src1, %entry ], [ %mul, %mulb ]
   ret i64 %res
 }
+
+; Check the comparison can be reversed if that allows CGFRL to be used.
+define i64 @f6(i64 %src2) {
+; CHECK-LABEL: f6:
+; CHECK: cgfrl %r2, g
+; CHECK-NEXT: jh {{\.L.*}}
+; CHECK: br %r14
+entry:
+  %val = load i32 *@g
+  %src1 = sext i32 %val to i64
+  %cond = icmp slt i64 %src1, %src2
+  br i1 %cond, label %exit, label %mulb
+mulb:
+  %mul = mul i64 %src2, %src2
+  br label %exit
+exit:
+  %res = phi i64 [ %src2, %entry ], [ %mul, %mulb ]
+  ret i64 %res
+}