Imported Upstream version 5.18.0.246

Former-commit-id: 0c7ce5b1a7851e13f22acfd379b7f9fb304e4833

external/llvm/test/CodeGen/SystemZ/fp-const-11.ll

@@ -0,0 +1,40 @@
+; Test loads of f128 floating-point constants on z14.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z14 | FileCheck %s
+; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z14 | FileCheck %s -check-prefix=CONST
+
+; Test loading zero.
+define void @f1(fp128 *%x) {
+; CHECK-LABEL: f1:
+; CHECK: vzero [[REG:%v[0-9]+]]
+; CHECK: vst [[REG]], 0(%r2)
+; CHECK: br %r14
+  store fp128 0xL00000000000000000000000000000000, fp128 *%x
+  ret void
+}
+
+; Test loading of negative floating-point zero.
+define void @f2(fp128 *%x) {
+; CHECK-LABEL: f2:
+; CHECK: vzero [[REG:%v[0-9]+]]
+; CHECK: wflnxb [[REG]], [[REG]]
+; CHECK: vst [[REG]], 0(%r2)
+; CHECK: br %r14
+  store fp128 0xL00000000000000008000000000000000, fp128 *%x
+  ret void
+}
+
+; Test loading of a 128-bit floating-point constant.  This value would
+; actually fit within the 32-bit format, but we don't have extending
+; loads into vector registers.
+define void @f3(fp128 *%x) {
+; CHECK-LABEL: f3:
+; CHECK: larl [[REGISTER:%r[1-5]+]], {{.*}}
+; CHECK: vl [[REG:%v[0-9]+]], 0([[REGISTER]])
+; CHECK: vst [[REG]], 0(%r2)
+; CHECK: br %r14
+; CONST: .quad 4611404543484231680
+; CONST: .quad 0
+  store fp128 0xL00000000000000003fff000002000000, fp128 *%x
+  ret void
+}