1 files changed, 40 insertions, 0 deletions
diff --git a/test/CodeGen/SystemZ/int-cmp-12.ll b/test/CodeGen/SystemZ/int-cmp-12.ll
new file mode 100644
index 0000000..0288730
--- /dev/null
+++ b/test/CodeGen/SystemZ/int-cmp-12.ll
@@ -0,0 +1,40 @@
+; Test 64-bit unsigned comparisons in which the second operand is constant.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+
+; Check a value near the low end of the range.  We use CGFI for comparisons
+; with zero, or things that are equivalent to them.
+define double @f1(double %a, double %b, i64 %i1) {
+; CHECK: f1:
+; CHECK: clgfi %r2, 1
+; CHECK-NEXT: j{{g?}}h
+; CHECK: ldr %f0, %f2
+; CHECK: br %r14
+  %cond = icmp ugt i64 %i1, 1
+  %res = select i1 %cond, double %a, double %b
+  ret double %res
+}
+
+; Check the high end of the CLGFI range.
+define double @f2(double %a, double %b, i64 %i1) {
+; CHECK: f2:
+; CHECK: clgfi %r2, 4294967295
+; CHECK-NEXT: j{{g?}}l
+; CHECK: ldr %f0, %f2
+; CHECK: br %r14
+  %cond = icmp ult i64 %i1, 4294967295
+  %res = select i1 %cond, double %a, double %b
+  ret double %res
+}
+
+; Check the next value up, which must use a register comparison.
+define double @f3(double %a, double %b, i64 %i1) {
+; CHECK: f3:
+; CHECK: clgr %r2,
+; CHECK-NEXT: j{{g?}}l
+; CHECK: ldr %f0, %f2
+; CHECK: br %r14
+  %cond = icmp ult i64 %i1, 4294967296
+  %res = select i1 %cond, double %a, double %b
+  ret double %res
+}