[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, 81 insertions, 0 deletions

diff --git a/test/CodeGen/SystemZ/int-move-09.ll b/test/CodeGen/SystemZ/int-move-09.ll
new file mode 100644
index 0000000000..a7a8c82951
--- /dev/null
+++ b/test/CodeGen/SystemZ/int-move-09.ll
@@ -0,0 +1,81 @@
+; Test 64-bit GPR accesses to a PC-relative location.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+
+@gsrc16 = global i16 1
+@gsrc32 = global i32 1
+@gsrc64 = global i64 1
+@gdst16 = global i16 2
+@gdst32 = global i32 2
+@gdst64 = global i64 2
+
+; Check sign-extending loads from i16.
+define i64 @f1() {
+; CHECK: f1:
+; CHECK: lghrl %r2, gsrc16
+; CHECK: br %r14
+  %val = load i16 *@gsrc16
+  %ext = sext i16 %val to i64
+  ret i64 %ext
+}
+
+; Check zero-extending loads from i16.
+define i64 @f2() {
+; CHECK: f2:
+; CHECK: llghrl %r2, gsrc16
+; CHECK: br %r14
+  %val = load i16 *@gsrc16
+  %ext = zext i16 %val to i64
+  ret i64 %ext
+}
+
+; Check sign-extending loads from i32.
+define i64 @f3() {
+; CHECK: f3:
+; CHECK: lgfrl %r2, gsrc32
+; CHECK: br %r14
+  %val = load i32 *@gsrc32
+  %ext = sext i32 %val to i64
+  ret i64 %ext
+}
+
+; Check zero-extending loads from i32.
+define i64 @f4() {
+; CHECK: f4:
+; CHECK: llgfrl %r2, gsrc32
+; CHECK: br %r14
+  %val = load i32 *@gsrc32
+  %ext = zext i32 %val to i64
+  ret i64 %ext
+}
+
+; Check truncating 16-bit stores.
+define void @f5(i64 %val) {
+; CHECK: f5:
+; CHECK: sthrl %r2, gdst16
+; CHECK: br %r14
+  %half = trunc i64 %val to i16
+  store i16 %half, i16 *@gdst16
+  ret void
+}
+
+; Check truncating 32-bit stores.
+define void @f6(i64 %val) {
+; CHECK: f6:
+; CHECK: strl %r2, gdst32
+; CHECK: br %r14
+  %word = trunc i64 %val to i32
+  store i32 %word, i32 *@gdst32
+  ret void
+}
+
+; Check plain loads and stores.
+define void @f7() {
+; CHECK: f7:
+; CHECK: lgrl %r0, gsrc64
+; CHECK: stgrl %r0, gdst64
+; CHECK: br %r14
+  %val = load i64 *@gsrc64
+  store i64 %val, i64 *@gdst64
+  ret void
+}