From 99ef10f9156e818ca85da2421f8b3cb776afba87 Mon Sep 17 00:00:00 2001
From: Joerg Sonnenberger <joerg@bec.de>
Date: Tue, 29 Jul 2014 23:16:31 +0000
Subject: [PATCH] Recognize BookE's mbar instruction.

llvm-svn: 214244
---
 llvm/lib/Target/PowerPC/PPCInstrFormats.td                  | 9 +++++++++
 llvm/lib/Target/PowerPC/PPCInstrInfo.td                     | 3 +++
 llvm/test/MC/Disassembler/PowerPC/ppc64-encoding-bookII.txt | 3 +++
 llvm/test/MC/PowerPC/ppc64-encoding-bookII.s                | 3 +++
 4 files changed, 18 insertions(+)

diff --git a/llvm/lib/Target/PowerPC/PPCInstrFormats.td b/llvm/lib/Target/PowerPC/PPCInstrFormats.td
index c95aefa..d40a9ab 100644
--- a/llvm/lib/Target/PowerPC/PPCInstrFormats.td
+++ b/llvm/lib/Target/PowerPC/PPCInstrFormats.td
@@ -468,6 +468,15 @@ class XForm_sr<bits<6> opcode, bits<10> xo, dag OOL, dag IOL, string asmstr,
   let Inst{21-30} = xo;
 }
 
+class XForm_mbar<bits<6> opcode, bits<10> xo, dag OOL, dag IOL, string asmstr,
+                InstrItinClass itin>
+         : I<opcode, OOL, IOL, asmstr, itin> {
+  bits<5> MO;
+
+  let Inst{6-10} = MO;
+  let Inst{21-30} = xo;
+}
+
 class XForm_srin<bits<6> opcode, bits<10> xo, dag OOL, dag IOL, string asmstr,
                 InstrItinClass itin>
          : I<opcode, OOL, IOL, asmstr, itin> {
diff --git a/llvm/lib/Target/PowerPC/PPCInstrInfo.td b/llvm/lib/Target/PowerPC/PPCInstrInfo.td
index 5b8cb5c..18398530 100644
--- a/llvm/lib/Target/PowerPC/PPCInstrInfo.td
+++ b/llvm/lib/Target/PowerPC/PPCInstrInfo.td
@@ -3046,6 +3046,9 @@ def EIEIO : XForm_24_eieio<31, 854, (outs), (ins),
 def WAIT : XForm_24_sync<31, 62, (outs), (ins i32imm:$L),
                          "wait $L", IIC_LdStLoad, []>;
 
+def MBAR : XForm_mbar<31, 854, (outs), (ins u5imm:$MO),
+                         "mbar $MO", IIC_LdStLoad>, Requires<[IsBookE]>;
+
 def MTSR: XForm_sr<31, 210, (outs), (ins gprc:$RS, u4imm:$SR),
             "mtsr $SR, $RS", IIC_SprMTSR>;
 
diff --git a/llvm/test/MC/Disassembler/PowerPC/ppc64-encoding-bookII.txt b/llvm/test/MC/Disassembler/PowerPC/ppc64-encoding-bookII.txt
index 5e6033d..f0ef902 100644
--- a/llvm/test/MC/Disassembler/PowerPC/ppc64-encoding-bookII.txt
+++ b/llvm/test/MC/Disassembler/PowerPC/ppc64-encoding-bookII.txt
@@ -33,6 +33,9 @@
 # CHECK: wait 2                          
 0x7c 0x40 0x00 0x7c
 
+# CHECK: mbar 1
+0x7c 0x20 0x06 0xac
+
 # CHECK: dcbf 2, 3                       
 0x7c 0x02 0x18 0xac
 
diff --git a/llvm/test/MC/PowerPC/ppc64-encoding-bookII.s b/llvm/test/MC/PowerPC/ppc64-encoding-bookII.s
index 99796ca..9e109e1 100644
--- a/llvm/test/MC/PowerPC/ppc64-encoding-bookII.s
+++ b/llvm/test/MC/PowerPC/ppc64-encoding-bookII.s
@@ -53,6 +53,9 @@
 # CHECK-BE: wait 2                          # encoding: [0x7c,0x40,0x00,0x7c]
 # CHECK-LE: wait 2                          # encoding: [0x7c,0x00,0x40,0x7c]
             wait 2
+# CHECK-BE: mbar 1                          # encoding: [0x7c,0x20,0x06,0xac]
+# CHECK-LE: mbar 1                          # encoding: [0xac,0x06,0x20,0x7c]
+            mbar 1
 
 # Extended mnemonics
 
-- 
2.7.4