[SystemZ] Add NRK, ORK and XRK

The atomic tests assume the two-operand forms, so I've restricted them to z10.

Running and-01.ll, or-01.ll and xor-01.ll for z196 as well as z10 shows why
using convertToThreeAddress() is better than exposing the three-operand forms
first and then converting back to two operands where possible (which is what
I'd originally tried).  Using the three-operand form first stops us from
taking advantage of NG, OG and XG for spills.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@186683 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 21 insertions, 0 deletions

diff --git a/test/CodeGen/SystemZ/or-07.ll b/test/CodeGen/SystemZ/or-07.ll
new file mode 100644
index 00000000000..f6848a16591
--- /dev/null
+++ b/test/CodeGen/SystemZ/or-07.ll
@@ -0,0 +1,21 @@
+; Test the three-operand forms of OR.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
+
+; Check XRK.
+define i32 @f1(i32 %a, i32 %b, i32 %c) {
+; CHECK-LABEL: f1:
+; CHECK: ork %r2, %r3, %r4
+; CHECK: br %r14
+  %or = or i32 %b, %c
+  ret i32 %or
+}
+
+; Check that we can still use OR in obvious cases.
+define i32 @f2(i32 %a, i32 %b) {
+; CHECK-LABEL: f2:
+; CHECK: or %r2, %r3
+; CHECK: br %r14
+  %or = or i32 %a, %b
+  ret i32 %or
+}