[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.

llvm-svn: 181204

1 files changed, 36 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/SystemZ/fp-round-01.ll b/llvm/test/CodeGen/SystemZ/fp-round-01.ll
new file mode 100644
index 00000000000..20325c33664
--- /dev/null
+++ b/llvm/test/CodeGen/SystemZ/fp-round-01.ll
@@ -0,0 +1,36 @@
+; Test rint()-like rounding, with non-integer values triggering an
+; inexact condition.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+
+; Test f32.
+declare float @llvm.rint.f32(float %f)
+define float @f1(float %f) {
+; CHECK: f1:
+; CHECK: fiebr %f0, 0, %f0
+; CHECK: br %r14
+  %res = call float @llvm.rint.f32(float %f)
+  ret float %res
+}
+
+; Test f64.
+declare double @llvm.rint.f64(double %f)
+define double @f2(double %f) {
+; CHECK: f2:
+; CHECK: fidbr %f0, 0, %f0
+; CHECK: br %r14
+  %res = call double @llvm.rint.f64(double %f)
+  ret double %res
+}
+
+; Test f128.
+declare fp128 @llvm.rint.f128(fp128 %f)
+define void @f3(fp128 *%ptr) {
+; CHECK: f3:
+; CHECK: fixbr %f0, 0, %f0
+; CHECK: br %r14
+  %src = load fp128 *%ptr
+  %res = call fp128 @llvm.rint.f128(fp128 %src)
+  store fp128 %res, fp128 *%ptr
+  ret void
+}