1 files changed, 78 insertions, 0 deletions
diff --git a/test/CodeGen/SystemZ/int-cmp-43.ll b/test/CodeGen/SystemZ/int-cmp-43.ll
new file mode 100644
index 0000000..f387293
--- /dev/null
+++ b/test/CodeGen/SystemZ/int-cmp-43.ll
@@ -0,0 +1,78 @@
+; Test 64-bit comparisons in which the second operand is a PC-relative
+; variable.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+
+@g = global i64 1
+
+; Check signed comparisons.
+define i64 @f1(i64 %src1) {
+; CHECK: f1:
+; CHECK: cgrl %r2, g
+; CHECK-NEXT: j{{g?}}l
+; CHECK: br %r14
+entry:
+  %src2 = load i64 *@g
+  %cond = icmp slt i64 %src1, %src2
+  br i1 %cond, label %exit, label %mulb
+mulb:
+  %mul = mul i64 %src1, %src1
+  br label %exit
+exit:
+  %res = phi i64 [ %src1, %entry ], [ %mul, %mulb ]
+  ret i64 %res
+}
+
+; Check unsigned comparisons.
+define i64 @f2(i64 %src1) {
+; CHECK: f2:
+; CHECK: clgrl %r2, g
+; CHECK-NEXT: j{{g?}}l
+; CHECK: br %r14
+entry:
+  %src2 = load i64 *@g
+  %cond = icmp ult i64 %src1, %src2
+  br i1 %cond, label %exit, label %mulb
+mulb:
+  %mul = mul i64 %src1, %src1
+  br label %exit
+exit:
+  %res = phi i64 [ %src1, %entry ], [ %mul, %mulb ]
+  ret i64 %res
+}
+
+; Check equality, which can use CRL or CLRL.
+define i64 @f3(i64 %src1) {
+; CHECK: f3:
+; CHECK: c{{l?}}grl %r2, g
+; CHECK-NEXT: j{{g?}}e
+; CHECK: br %r14
+entry:
+  %src2 = load i64 *@g
+  %cond = icmp eq i64 %src1, %src2
+  br i1 %cond, label %exit, label %mulb
+mulb:
+  %mul = mul i64 %src1, %src1
+  br label %exit
+exit:
+  %res = phi i64 [ %src1, %entry ], [ %mul, %mulb ]
+  ret i64 %res
+}
+
+; ...likewise inequality.
+define i64 @f4(i64 %src1) {
+; CHECK: f4:
+; CHECK: c{{l?}}grl %r2, g
+; CHECK-NEXT: j{{g?}}lh
+; CHECK: br %r14
+entry:
+  %src2 = load i64 *@g
+  %cond = icmp ne i64 %src1, %src2
+  br i1 %cond, label %exit, label %mulb
+mulb:
+  %mul = mul i64 %src1, %src1
+  br label %exit
+exit:
+  %res = phi i64 [ %src1, %entry ], [ %mul, %mulb ]
+  ret i64 %res
+}