From 75f5dc5ae8ef12959354d788009354262545c734 Mon Sep 17 00:00:00 2001
From: goetz <unknown>
Date: Thu, 27 Oct 2016 12:22:28 +0200
Subject: [PATCH] 8168318: PPC64: Use cmpldi instead of li/cmpld Reviewed-by:
 goetz Contributed-by: igor.nunes@eldorado.org.br

---
 src/cpu/ppc/vm/ppc.ad | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/cpu/ppc/vm/ppc.ad b/src/cpu/ppc/vm/ppc.ad
index c3a64d338..f6bdfe2bb 100644
--- a/src/cpu/ppc/vm/ppc.ad
+++ b/src/cpu/ppc/vm/ppc.ad
@@ -10571,6 +10571,17 @@ instruct cmpP_reg_reg(flagsReg crx, iRegP_N2P src1, iRegP_N2P src2) %{
   ins_pipe(pipe_class_compare);
 %}
 
+instruct cmpP_reg_null(flagsReg crx, iRegP_N2P src1, immP_0or1 src2) %{
+  match(Set crx (CmpP src1 src2));
+  format %{ "CMPLDI   $crx, $src1, $src2 \t// ptr" %}
+  size(4);
+  ins_encode %{
+    // TODO: PPC port $archOpcode(ppc64Opcode_cmpl);
+    __ cmpldi($crx$$CondRegister, $src1$$Register, (int)((short)($src2$$constant & 0xFFFF)));
+  %}
+  ins_pipe(pipe_class_compare);
+%}
+
 // Used in postalloc expand.
 instruct cmpP_reg_imm16(flagsReg crx, iRegPsrc src1, immL16 src2) %{
   // This match rule prevents reordering of node before a safepoint.
-- 
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