1 files changed, 81 insertions, 0 deletions
diff --git a/test/CodeGen/SystemZ/int-cmp-36.ll b/test/CodeGen/SystemZ/int-cmp-36.ll
new file mode 100644
index 0000000..0813594
--- /dev/null
+++ b/test/CodeGen/SystemZ/int-cmp-36.ll
@@ -0,0 +1,81 @@
+; Test 32-bit comparisons in which the second operand is sign-extended
+; from a PC-relative i16.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+
+@g = global i16 1
+
+; Check signed comparison.
+define i32 @f1(i32 %src1) {
+; CHECK: f1:
+; CHECK: chrl %r2, g
+; CHECK-NEXT: j{{g?}}l
+; CHECK: br %r14
+entry:
+  %val = load i16 *@g
+  %src2 = sext i16 %val to i32
+  %cond = icmp slt i32 %src1, %src2
+  br i1 %cond, label %exit, label %mulb
+mulb:
+  %mul = mul i32 %src1, %src1
+  br label %exit
+exit:
+  %res = phi i32 [ %src1, %entry ], [ %mul, %mulb ]
+  ret i32 %res
+}
+
+; Check unsigned comparison, which cannot use CHRL.
+define i32 @f2(i32 %src1) {
+; CHECK: f2:
+; CHECK-NOT: chrl
+; CHECK: br %r14
+entry:
+  %val = load i16 *@g
+  %src2 = sext i16 %val to i32
+  %cond = icmp ult i32 %src1, %src2
+  br i1 %cond, label %exit, label %mulb
+mulb:
+  %mul = mul i32 %src1, %src1
+  br label %exit
+exit:
+  %res = phi i32 [ %src1, %entry ], [ %mul, %mulb ]
+  ret i32 %res
+}
+
+; Check equality.
+define i32 @f3(i32 %src1) {
+; CHECK: f3:
+; CHECK: chrl %r2, g
+; CHECK-NEXT: j{{g?}}e
+; CHECK: br %r14
+entry:
+  %val = load i16 *@g
+  %src2 = sext i16 %val to i32
+  %cond = icmp eq i32 %src1, %src2
+  br i1 %cond, label %exit, label %mulb
+mulb:
+  %mul = mul i32 %src1, %src1
+  br label %exit
+exit:
+  %res = phi i32 [ %src1, %entry ], [ %mul, %mulb ]
+  ret i32 %res
+}
+
+; Check inequality.
+define i32 @f4(i32 %src1) {
+; CHECK: f4:
+; CHECK: chrl %r2, g
+; CHECK-NEXT: j{{g?}}lh
+; CHECK: br %r14
+entry:
+  %val = load i16 *@g
+  %src2 = sext i16 %val to i32
+  %cond = icmp ne i32 %src1, %src2
+  br i1 %cond, label %exit, label %mulb
+mulb:
+  %mul = mul i32 %src1, %src1
+  br label %exit
+exit:
+  %res = phi i32 [ %src1, %entry ], [ %mul, %mulb ]
+  ret i32 %res
+}