1 files changed, 33 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/SystemZ/fp-cmp-06.ll b/llvm/test/CodeGen/SystemZ/fp-cmp-06.ll
new file mode 100644
index 00000000000..e146b51e4fb
--- /dev/null
+++ b/llvm/test/CodeGen/SystemZ/fp-cmp-06.ll
@@ -0,0 +1,33 @@
+; Test f128 comparisons on z14.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z14 | FileCheck %s
+
+; There is no memory form of 128-bit comparison.
+define i64 @f1(i64 %a, i64 %b, fp128 *%ptr1, fp128 *%ptr2) {
+; CHECK-LABEL: f1:
+; CHECK-DAG: vl [[REG1:%v[0-9]+]], 0(%r4)
+; CHECK-DAG: vl [[REG2:%v[0-9]+]], 0(%r5)
+; CHECK: wfcxb [[REG1]], [[REG2]]
+; CHECK-NEXT: locgrne %r2, %r3
+; CHECK: br %r14
+  %f1 = load fp128, fp128 *%ptr1
+  %f2 = load fp128, fp128 *%ptr2
+  %cond = fcmp oeq fp128 %f1, %f2
+  %res = select i1 %cond, i64 %a, i64 %b
+  ret i64 %res
+}
+
+; Check comparison with zero -- it is not worthwhile to copy to
+; FP pairs just so we can use LTXBR, so simply load up a zero.
+define i64 @f2(i64 %a, i64 %b, fp128 *%ptr) {
+; CHECK-LABEL: f2:
+; CHECK-DAG: vl [[REG1:%v[0-9]+]], 0(%r4)
+; CHECK-DAG: vzero [[REG2:%v[0-9]+]]
+; CHECK: wfcxb [[REG1]], [[REG2]]
+; CHECK-NEXT: locgrne %r2, %r3
+; CHECK: br %r14
+  %f = load fp128, fp128 *%ptr
+  %cond = fcmp oeq fp128 %f, 0xL00000000000000000000000000000000
+  %res = select i1 %cond, i64 %a, i64 %b
+  ret i64 %res
+}