[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
diff --git a/llvm/test/CodeGen/SystemZ/fp-move-01.ll b/llvm/test/CodeGen/SystemZ/fp-move-01.ll
new file mode 100644
index 0000000..73cd978
--- /dev/null
+++ b/llvm/test/CodeGen/SystemZ/fp-move-01.ll
@@ -0,0 +1,30 @@
+; Test moves between FPRs.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+
+; Test f32 moves.
+define float @f1(float %a, float %b) {
+; CHECK: f1:
+; CHECK: ler %f0, %f2
+ ret float %b
+}
+
+; Test f64 moves.
+define double @f2(double %a, double %b) {
+; CHECK: f2:
+; CHECK: ldr %f0, %f2
+ ret double %b
+}
+
+; Test f128 moves. Since f128s are passed by reference, we need to force
+; a copy by other means.
+define void @f3(fp128 *%x) {
+; CHECK: f3:
+; CHECK: lxr
+; CHECK: axbr
+ %val = load volatile fp128 *%x
+ %sum = fadd fp128 %val, %val
+ store volatile fp128 %sum, fp128 *%x
+ store volatile fp128 %val, fp128 *%x
+ ret void
+}