From 892fc6d7b64364b230261daa967518a71748c01b Mon Sep 17 00:00:00 2001
From: Bruno Cardoso Lopes <bruno.cardoso@gmail.com>
Date: Tue, 18 Jan 2011 21:17:09 +0000
Subject: [PATCH] Fix the encoding of t2ISB by using the right class and also
 parse it correctly

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123776 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/ARM/ARMInstrThumb2.td          | 2 +-
 lib/Target/ARM/AsmParser/ARMAsmParser.cpp | 2 +-
 test/MC/ARM/arm_instructions.s            | 3 +++
 test/MC/ARM/thumb2.s                      | 2 ++
 4 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/lib/Target/ARM/ARMInstrThumb2.td b/lib/Target/ARM/ARMInstrThumb2.td
index 1bd853005e1..98e587a3d07 100644
--- a/lib/Target/ARM/ARMInstrThumb2.td
+++ b/lib/Target/ARM/ARMInstrThumb2.td
@@ -2808,7 +2808,7 @@ def t2DSB : AInoP<(outs), (ins memb_opt:$opt), ThumbFrm, NoItinerary,
 }
 
 // ISB has only full system option -- for disassembly only
-def t2ISB : T2I<(outs), (ins), NoItinerary, "isb", "",
+def t2ISB : AInoP<(outs), (ins), ThumbFrm, NoItinerary, "isb", "",
                   [/* For disassembly only; pattern left blank */]>,
                   Requires<[IsThumb2, HasV7]> {
   let Inst{31-4} = 0xf3bf8f6;
diff --git a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
index 4948ad5e625..6a8b6582157 100644
--- a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
+++ b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
@@ -1193,7 +1193,7 @@ GetMnemonicAcceptInfo(StringRef Mnemonic, bool &CanAcceptCarrySet,
       Mnemonic == "cps" || Mnemonic == "mcr2" || Mnemonic == "it" ||
       Mnemonic == "mcrr2" || Mnemonic == "cbz" || Mnemonic == "cdp2" ||
       Mnemonic == "trap" || Mnemonic == "mrc2" || Mnemonic == "mrrc2" ||
-      Mnemonic == "dsb" || Mnemonic == "movs" ||
+      Mnemonic == "dsb" || Mnemonic == "movs" || Mnemonic == "isb" ||
       (isThumb && Mnemonic == "bkpt")) {
     CanAcceptPredicationCode = false;
   } else {
diff --git a/test/MC/ARM/arm_instructions.s b/test/MC/ARM/arm_instructions.s
index cbcb09f13bd..6820f027506 100644
--- a/test/MC/ARM/arm_instructions.s
+++ b/test/MC/ARM/arm_instructions.s
@@ -130,3 +130,6 @@
 
 @ CHECK: bkpt  #10 @ encoding: [0x7a,0x00,0x20,0xe1]
         bkpt  #10
+
+@ CHECK: isb @ encoding: [0x6f,0xf0,0x7f,0xf5]
+        isb
diff --git a/test/MC/ARM/thumb2.s b/test/MC/ARM/thumb2.s
index ceaf0a424f9..e68105e07f0 100644
--- a/test/MC/ARM/thumb2.s
+++ b/test/MC/ARM/thumb2.s
@@ -164,4 +164,6 @@
   ldrsh.w	r0, [r0]
 @ CHECK: bfi  r0, r0, #5, #7 @ encoding: [0x60,0xf3,0x4b,0x10]
   bfi  r0, r0, #5, #7
+@ CHECK: isb @ encoding: [0xbf,0xf3,0x6f,0x8f]
+  isb