[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, 137 insertions, 0 deletions

diff --git a/test/CodeGen/SystemZ/insert-04.ll b/test/CodeGen/SystemZ/insert-04.ll
new file mode 100644
index 0000000000..07f88b9859
--- /dev/null
+++ b/test/CodeGen/SystemZ/insert-04.ll
@@ -0,0 +1,137 @@
+; Test insertions of 16-bit constants into an i64.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+
+; Check the lowest useful IILL value.  (We use NILL rather than IILL
+; to clear 16 bits.)
+define i64 @f1(i64 %a) {
+; CHECK: f1:
+; CHECK-NOT: ni
+; CHECK: iill %r2, 1
+; CHECK: br %r14
+  %and = and i64 %a, 18446744073709486080
+  %or = or i64 %and, 1
+  ret i64 %or
+}
+
+; Check a middle value.
+define i64 @f2(i64 %a) {
+; CHECK: f2:
+; CHECK-NOT: ni
+; CHECK: iill %r2, 32769
+; CHECK: br %r14
+  %and = and i64 %a, -65536
+  %or = or i64 %and, 32769
+  ret i64 %or
+}
+
+; Check the highest useful IILL value.  (We use OILL rather than IILL
+; to set 16 bits.)
+define i64 @f3(i64 %a) {
+; CHECK: f3:
+; CHECK-NOT: ni
+; CHECK: iill %r2, 65534
+; CHECK: br %r14
+  %and = and i64 %a, 18446744073709486080
+  %or = or i64 %and, 65534
+  ret i64 %or
+}
+
+; Check the lowest useful IILH value.
+define i64 @f4(i64 %a) {
+; CHECK: f4:
+; CHECK-NOT: ni
+; CHECK: iilh %r2, 1
+; CHECK: br %r14
+  %and = and i64 %a, 18446744069414649855
+  %or = or i64 %and, 65536
+  ret i64 %or
+}
+
+; Check a middle value.
+define i64 @f5(i64 %a) {
+; CHECK: f5:
+; CHECK-NOT: ni
+; CHECK: iilh %r2, 32767
+; CHECK: br %r14
+  %and = and i64 %a, -4294901761
+  %or = or i64 %and, 2147418112
+  ret i64 %or
+}
+
+; Check the highest useful IILH value.
+define i64 @f6(i64 %a) {
+; CHECK: f6:
+; CHECK-NOT: ni
+; CHECK: iilh %r2, 65534
+; CHECK: br %r14
+  %and = and i64 %a, 18446744069414649855
+  %or = or i64 %and, 4294836224
+  ret i64 %or
+}
+
+; Check the lowest useful IIHL value.
+define i64 @f7(i64 %a) {
+; CHECK: f7:
+; CHECK-NOT: ni
+; CHECK: iihl %r2, 1
+; CHECK: br %r14
+  %and = and i64 %a, 18446462603027808255
+  %or = or i64 %and, 4294967296
+  ret i64 %or
+}
+
+; Check a middle value.
+define i64 @f8(i64 %a) {
+; CHECK: f8:
+; CHECK-NOT: ni
+; CHECK: iihl %r2, 32767
+; CHECK: br %r14
+  %and = and i64 %a, -281470681743361
+  %or = or i64 %and, 140733193388032
+  ret i64 %or
+}
+
+; Check the highest useful IIHL value.
+define i64 @f9(i64 %a) {
+; CHECK: f9:
+; CHECK-NOT: ni
+; CHECK: iihl %r2, 65534
+; CHECK: br %r14
+  %and = and i64 %a, 18446462603027808255
+  %or = or i64 %and, 281466386776064
+  ret i64 %or
+}
+
+; Check the lowest useful IIHH value.
+define i64 @f10(i64 %a) {
+; CHECK: f10:
+; CHECK-NOT: ni
+; CHECK: iihh %r2, 1
+; CHECK: br %r14
+  %and = and i64 %a, 281474976710655
+  %or = or i64 %and, 281474976710656
+  ret i64 %or
+}
+
+; Check a middle value.
+define i64 @f11(i64 %a) {
+; CHECK: f11:
+; CHECK-NOT: ni
+; CHECK: iihh %r2, 32767
+; CHECK: br %r14
+  %and = and i64 %a, 281474976710655
+  %or = or i64 %and, 9223090561878065152
+  ret i64 %or
+}
+
+; Check the highest useful IIHH value.
+define i64 @f12(i64 %a) {
+; CHECK: f12:
+; CHECK-NOT: ni
+; CHECK: iihh %r2, 65534
+; CHECK: br %r14
+  %and = and i64 %a, 281474976710655
+  %or = or i64 %and, 18446181123756130304
+  ret i64 %or
+}