[SystemZ] Add floating-point load-and-test instructions
These instructions can also be used as comparisons with zero.
llvm-svn: 187882
diff --git a/llvm/test/CodeGen/SystemZ/fp-cmp-02.ll b/llvm/test/CodeGen/SystemZ/fp-cmp-02.ll
index 48374a7..309d12e 100644
--- a/llvm/test/CodeGen/SystemZ/fp-cmp-02.ll
+++ b/llvm/test/CodeGen/SystemZ/fp-cmp-02.ll
@@ -147,3 +147,15 @@
ret double %sel10
}
+
+; Check comparison with zero.
+define i64 @f8(i64 %a, i64 %b, double %f) {
+; CHECK-LABEL: f8:
+; CHECK: ltdbr %f0, %f0
+; CHECK-NEXT: je
+; CHECK: lgr %r2, %r3
+; CHECK: br %r14
+ %cond = fcmp oeq double %f, 0.0
+ %res = select i1 %cond, i64 %a, i64 %b
+ ret i64 %res
+}