[PowerPC][NFC] Add a testcase for fdiv expansion.

Pre-commit for following patch.

llvm-svn: 371938

diff --git a/llvm/test/CodeGen/PowerPC/fdiv.ll b/llvm/test/CodeGen/PowerPC/fdiv.ll
new file mode 100644 (file)
index 0000000..4e73dd2
--- /dev/null
+++ b/llvm/test/CodeGen/PowerPC/fdiv.ll
@@ -0,0 +1,16 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc64le-unknown-linux-gnu -mcpu=pwr8 | FileCheck %s
+
+define dso_local float @foo(float %0, float %1) local_unnamed_addr {
+; CHECK-LABEL: foo:
+; CHECK:       # %bb.0:
+; CHECK-NEXT:    xsresp 3, 2
+; CHECK-NEXT:    fneg 2, 2
+; CHECK-NEXT:    xsmulsp 0, 1, 3
+; CHECK-NEXT:    xsmaddasp 1, 2, 0
+; CHECK-NEXT:    xsmaddasp 0, 3, 1
+; CHECK-NEXT:    fmr 1, 0
+; CHECK-NEXT:    blr
+  %3 = fdiv fast float %0, %1
+  ret float %3
+}