From 59d6cff90eecf31cb3dd860c4e786674cfdd42eb Mon Sep 17 00:00:00 2001
From: Dimitry Andric <dim@FreeBSD.org>
Date: Mon, 10 Jun 2013 20:36:52 +0000
Subject: Vendor import of llvm tags/RELEASE_33/final r183502 (effectively, 3.3
 release): http://llvm.org/svn/llvm-project/llvm/tags/RELEASE_33/final@183502

---
 test/CodeGen/SystemZ/fp-add-02.ll | 71 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 test/CodeGen/SystemZ/fp-add-02.ll

(limited to 'test/CodeGen/SystemZ/fp-add-02.ll')

diff --git a/test/CodeGen/SystemZ/fp-add-02.ll b/test/CodeGen/SystemZ/fp-add-02.ll
new file mode 100644
index 000000000000..08eb90efbfaa
--- /dev/null
+++ b/test/CodeGen/SystemZ/fp-add-02.ll
@@ -0,0 +1,71 @@
+; Test 64-bit floating-point addition.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+
+; Check register addition.
+define double @f1(double %f1, double %f2) {
+; CHECK: f1:
+; CHECK: adbr %f0, %f2
+; CHECK: br %r14
+  %res = fadd double %f1, %f2
+  ret double %res
+}
+
+; Check the low end of the ADB range.
+define double @f2(double %f1, double *%ptr) {
+; CHECK: f2:
+; CHECK: adb %f0, 0(%r2)
+; CHECK: br %r14
+  %f2 = load double *%ptr
+  %res = fadd double %f1, %f2
+  ret double %res
+}
+
+; Check the high end of the aligned ADB range.
+define double @f3(double %f1, double *%base) {
+; CHECK: f3:
+; CHECK: adb %f0, 4088(%r2)
+; CHECK: br %r14
+  %ptr = getelementptr double *%base, i64 511
+  %f2 = load double *%ptr
+  %res = fadd double %f1, %f2
+  ret double %res
+}
+
+; Check the next doubleword up, which needs separate address logic.
+; Other sequences besides this one would be OK.
+define double @f4(double %f1, double *%base) {
+; CHECK: f4:
+; CHECK: aghi %r2, 4096
+; CHECK: adb %f0, 0(%r2)
+; CHECK: br %r14
+  %ptr = getelementptr double *%base, i64 512
+  %f2 = load double *%ptr
+  %res = fadd double %f1, %f2
+  ret double %res
+}
+
+; Check negative displacements, which also need separate address logic.
+define double @f5(double %f1, double *%base) {
+; CHECK: f5:
+; CHECK: aghi %r2, -8
+; CHECK: adb %f0, 0(%r2)
+; CHECK: br %r14
+  %ptr = getelementptr double *%base, i64 -1
+  %f2 = load double *%ptr
+  %res = fadd double %f1, %f2
+  ret double %res
+}
+
+; Check that ADB allows indices.
+define double @f6(double %f1, double *%base, i64 %index) {
+; CHECK: f6:
+; CHECK: sllg %r1, %r3, 3
+; CHECK: adb %f0, 800(%r1,%r2)
+; CHECK: br %r14
+  %ptr1 = getelementptr double *%base, i64 %index
+  %ptr2 = getelementptr double *%ptr1, i64 100
+  %f2 = load double *%ptr2
+  %res = fadd double %f1, %f2
+  ret double %res
+}
-- 
cgit v1.3