[PowerPC] add test case for reorder operands of qpx fma instr - nfc.

llvm/test/CodeGen/PowerPC/qpx-qvfmadd.ll

@@ -0,0 +1,19 @@
+; RUN: llc -verify-machineinstrs -stop-after=finalize-isel < %s -mcpu=a2q | FileCheck %s
+
+define <2 x double> @test_qvfmadd(<2 x double> %0, <2 x double> %1, <2 x double> %2) {
+; CHECK: test_qvfmadd
+; CHECK: QVFMADD %2, %0, %1, implicit $rm
+;
+  %4 = fmul reassoc nsz <2 x double> %2, %1
+  %5 = fadd reassoc nsz <2 x double> %4, %0
+  ret <2 x double> %5
+}
+
+define <4 x float> @test_qvfmadds(<4 x float> %0, <4 x float> %1, <4 x float> %2) {
+; CHECK: test_qvfmadds
+; CHECK: QVFMADDSs %2, %0, %1, implicit $rm
+;
+  %4 = fmul reassoc nsz <4 x float> %2, %1
+  %5 = fadd reassoc nsz <4 x float> %4, %0
+  ret <4 x float> %5
+}