[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, 20 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/SystemZ/fp-div-03.ll b/llvm/test/CodeGen/SystemZ/fp-div-03.ll
new file mode 100644
index 00000000000..18f2d7449a8
--- /dev/null
+++ b/llvm/test/CodeGen/SystemZ/fp-div-03.ll
@@ -0,0 +1,20 @@
+; Test 128-bit floating-point division.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+
+; There is no memory form of 128-bit division.
+define void @f1(fp128 *%ptr, float %f2) {
+; CHECK: f1:
+; CHECK: lxebr %f0, %f0
+; CHECK: ld %f1, 0(%r2)
+; CHECK: ld %f3, 8(%r2)
+; CHECK: dxbr %f1, %f0
+; CHECK: std %f1, 0(%r2)
+; CHECK: std %f3, 8(%r2)
+; CHECK: br %r14
+  %f1 = load fp128 *%ptr
+  %f2x = fpext float %f2 to fp128
+  %sum = fdiv fp128 %f1, %f2x
+  store fp128 %sum, fp128 *%ptr
+  ret void
+}