[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, 55 insertions, 0 deletions

diff --git a/test/CodeGen/SystemZ/int-cmp-25.ll b/test/CodeGen/SystemZ/int-cmp-25.ll
new file mode 100644
index 0000000..a3a223f
--- /dev/null
+++ b/test/CodeGen/SystemZ/int-cmp-25.ll
@@ -0,0 +1,55 @@
+; Test 16-bit inequality comparisons between memory and a constant.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+
+; Check the low end of the unsigned 16-bit range.
+define double @f1(double %a, double %b, i16 *%ptr) {
+; CHECK: f1:
+; CHECK: clhhsi 0(%r2), 0
+; CHECK-NEXT: j{{g?}}lh
+; CHECK: ldr %f0, %f2
+; CHECK: br %r14
+  %val = load i16 *%ptr
+  %cond = icmp ne i16 %val, 0
+  %res = select i1 %cond, double %a, double %b
+  ret double %res
+}
+
+; Check the high end of the unsigned 16-bit range.
+define double @f2(double %a, double %b, i16 *%ptr) {
+; CHECK: f2:
+; CHECK: clhhsi 0(%r2), 65535
+; CHECK-NEXT: j{{g?}}lh
+; CHECK: ldr %f0, %f2
+; CHECK: br %r14
+  %val = load i16 *%ptr
+  %cond = icmp ne i16 %val, 65535
+  %res = select i1 %cond, double %a, double %b
+  ret double %res
+}
+
+; Check the low end of the signed 16-bit range.
+define double @f3(double %a, double %b, i16 *%ptr) {
+; CHECK: f3:
+; CHECK: clhhsi 0(%r2), 32768
+; CHECK-NEXT: j{{g?}}lh
+; CHECK: ldr %f0, %f2
+; CHECK: br %r14
+  %val = load i16 *%ptr
+  %cond = icmp ne i16 %val, -32768
+  %res = select i1 %cond, double %a, double %b
+  ret double %res
+}
+
+; Check the high end of the signed 16-bit range.
+define double @f4(double %a, double %b, i16 *%ptr) {
+; CHECK: f4:
+; CHECK: clhhsi 0(%r2), 32767
+; CHECK-NEXT: j{{g?}}lh
+; CHECK: ldr %f0, %f2
+; CHECK: br %r14
+  %val = load i16 *%ptr
+  %cond = icmp ne i16 %val, 32767
+  %res = select i1 %cond, double %a, double %b
+  ret double %res
+}