[SystemZ] Add CodeGen test cases

This adds all CodeGen tests for the SystemZ target.

This version of the patch incorporates feedback from a review by
Sean Silva.  Thanks to all reviewers!

Patch by Richard Sandiford.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181204 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 182 insertions, 0 deletions

diff --git a/test/CodeGen/SystemZ/or-04.ll b/test/CodeGen/SystemZ/or-04.ll
new file mode 100644
index 0000000000..a827842398
--- /dev/null
+++ b/test/CodeGen/SystemZ/or-04.ll
@@ -0,0 +1,182 @@
+; Test 64-bit ORs in which the second operand is constant.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+
+; Check the lowest useful OILL value.
+define i64 @f1(i64 %a) {
+; CHECK: f1:
+; CHECK: oill %r2, 1
+; CHECK: br %r14
+  %or = or i64 %a, 1
+  ret i64 %or
+}
+
+; Check the high end of the OILL range.
+define i64 @f2(i64 %a) {
+; CHECK: f2:
+; CHECK: oill %r2, 65535
+; CHECK: br %r14
+  %or = or i64 %a, 65535
+  ret i64 %or
+}
+
+; Check the lowest useful OILH value, which is the next value up.
+define i64 @f3(i64 %a) {
+; CHECK: f3:
+; CHECK: oilh %r2, 1
+; CHECK: br %r14
+  %or = or i64 %a, 65536
+  ret i64 %or
+}
+
+; Check the lowest useful OILF value, which is the next value up again.
+define i64 @f4(i64 %a) {
+; CHECK: f4:
+; CHECK: oilf %r2, 4294901759
+; CHECK: br %r14
+  %or = or i64 %a, 4294901759
+  ret i64 %or
+}
+
+; Check the high end of the OILH range.
+define i64 @f5(i64 %a) {
+; CHECK: f5:
+; CHECK: oilh %r2, 65535
+; CHECK: br %r14
+  %or = or i64 %a, 4294901760
+  ret i64 %or
+}
+
+; Check the high end of the OILF range.
+define i64 @f6(i64 %a) {
+; CHECK: f6:
+; CHECK: oilf %r2, 4294967295
+; CHECK: br %r14
+  %or = or i64 %a, 4294967295
+  ret i64 %or
+}
+
+; Check the lowest useful OIHL value, which is the next value up.
+define i64 @f7(i64 %a) {
+; CHECK: f7:
+; CHECK: oihl %r2, 1
+; CHECK: br %r14
+  %or = or i64 %a, 4294967296
+  ret i64 %or
+}
+
+; Check the next value up again, which must use two ORs.
+define i64 @f8(i64 %a) {
+; CHECK: f8:
+; CHECK: oihl %r2, 1
+; CHECK: oill %r2, 1
+; CHECK: br %r14
+  %or = or i64 %a, 4294967297
+  ret i64 %or
+}
+
+; Check the high end of the OILL range.
+define i64 @f9(i64 %a) {
+; CHECK: f9:
+; CHECK: oihl %r2, 1
+; CHECK: oill %r2, 65535
+; CHECK: br %r14
+  %or = or i64 %a, 4295032831
+  ret i64 %or
+}
+
+; Check the next value up, which must use OILH
+define i64 @f10(i64 %a) {
+; CHECK: f10:
+; CHECK: oihl %r2, 1
+; CHECK: oilh %r2, 1
+; CHECK: br %r14
+  %or = or i64 %a, 4295032832
+  ret i64 %or
+}
+
+; Check the next value up again, which must use OILF
+define i64 @f11(i64 %a) {
+; CHECK: f11:
+; CHECK: oihl %r2, 1
+; CHECK: oilf %r2, 65537
+; CHECK: br %r14
+  %or = or i64 %a, 4295032833
+  ret i64 %or
+}
+
+; Check the high end of the OIHL range.
+define i64 @f12(i64 %a) {
+; CHECK: f12:
+; CHECK: oihl %r2, 65535
+; CHECK: br %r14
+  %or = or i64 %a, 281470681743360
+  ret i64 %or
+}
+
+; Check a combination of the high end of the OIHL range and the high end
+; of the OILF range.
+define i64 @f13(i64 %a) {
+; CHECK: f13:
+; CHECK: oihl %r2, 65535
+; CHECK: oilf %r2, 4294967295
+; CHECK: br %r14
+  %or = or i64 %a, 281474976710655
+  ret i64 %or
+}
+
+; Check the lowest useful OIHH value.
+define i64 @f14(i64 %a) {
+; CHECK: f14:
+; CHECK: oihh %r2, 1
+; CHECK: br %r14
+  %or = or i64 %a, 281474976710656
+  ret i64 %or
+}
+
+; Check the next value up, which needs two ORs.
+define i64 @f15(i64 %a) {
+; CHECK: f15:
+; CHECK: oihh %r2, 1
+; CHECK: oill %r2, 1
+; CHECK: br %r14
+  %or = or i64 %a, 281474976710657
+  ret i64 %or
+}
+
+; Check the lowest useful OIHF value.
+define i64 @f16(i64 %a) {
+; CHECK: f16:
+; CHECK: oihf %r2, 65537
+; CHECK: br %r14
+  %or = or i64 %a, 281479271677952
+  ret i64 %or
+}
+
+; Check the high end of the OIHH range.
+define i64 @f17(i64 %a) {
+; CHECK: f17:
+; CHECK: oihh %r2, 65535
+; CHECK: br %r14
+  %or = or i64 %a, 18446462598732840960
+  ret i64 %or
+}
+
+; Check the high end of the OIHF range.
+define i64 @f18(i64 %a) {
+; CHECK: f18:
+; CHECK: oihf %r2, 4294967295
+; CHECK: br %r14
+  %or = or i64 %a, -4294967296
+  ret i64 %or
+}
+
+; Check the highest useful OR value.
+define i64 @f19(i64 %a) {
+; CHECK: f19:
+; CHECK: oihf %r2, 4294967295
+; CHECK: oilf %r2, 4294967294
+; CHECK: br %r14
+  %or = or i64 %a, -2
+  ret i64 %or
+}