From fdcee77887372dbf6589d47cc33094965b679f24 Mon Sep 17 00:00:00 2001
From: Bruno Cardoso Lopes <bruno.cardoso@gmail.com>
Date: Tue, 18 Jan 2011 20:55:11 +0000
Subject: [PATCH] Follow the current hack set and enable the correct parsing of
 bkpt while in thumb mode.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123772 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/ARM/AsmParser/ARMAsmParser.cpp | 12 +++++++++---
 test/MC/ARM/arm_instructions.s            |  3 +++
 test/MC/ARM/thumb.s                       |  3 +++
 3 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
index 6482087be26..4948ad5e625 100644
--- a/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
+++ b/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
@@ -81,6 +81,8 @@ class ARMAsmParser : public TargetAsmParser {
   bool MatchAndEmitInstruction(SMLoc IDLoc,
                                SmallVectorImpl<MCParsedAsmOperand*> &Operands,
                                MCStreamer &Out);
+  void GetMnemonicAcceptInfo(StringRef Mnemonic, bool &CanAcceptCarrySet,
+                             bool &CanAcceptPredicationCode);
 
   /// @name Auto-generated Match Functions
   /// {
@@ -1169,8 +1171,11 @@ static StringRef SplitMnemonicAndCC(StringRef Mnemonic,
 /// inclusion of carry set or predication code operands.
 //
 // FIXME: It would be nice to autogen this.
-static void GetMnemonicAcceptInfo(StringRef Mnemonic, bool &CanAcceptCarrySet,
-                                  bool &CanAcceptPredicationCode) {
+void ARMAsmParser::
+GetMnemonicAcceptInfo(StringRef Mnemonic, bool &CanAcceptCarrySet,
+                      bool &CanAcceptPredicationCode) {
+  bool isThumb = TM.getSubtarget<ARMSubtarget>().isThumb();
+
   if (Mnemonic == "and" || Mnemonic == "lsl" || Mnemonic == "lsr" ||
       Mnemonic == "rrx" || Mnemonic == "ror" || Mnemonic == "sub" ||
       Mnemonic == "smull" || Mnemonic == "add" || Mnemonic == "adc" ||
@@ -1188,7 +1193,8 @@ static void 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" ||
+      (isThumb && Mnemonic == "bkpt")) {
     CanAcceptPredicationCode = false;
   } else {
     CanAcceptPredicationCode = true;
diff --git a/test/MC/ARM/arm_instructions.s b/test/MC/ARM/arm_instructions.s
index 002e5eb2627..cbcb09f13bd 100644
--- a/test/MC/ARM/arm_instructions.s
+++ b/test/MC/ARM/arm_instructions.s
@@ -127,3 +127,6 @@
 
 @ CHECK: bfi  r0, r0, #5, #7 @ encoding: [0x90,0x02,0xcb,0xe7]
         bfi  r0, r0, #5, #7
+
+@ CHECK: bkpt  #10 @ encoding: [0x7a,0x00,0x20,0xe1]
+        bkpt  #10
diff --git a/test/MC/ARM/thumb.s b/test/MC/ARM/thumb.s
index 3d58521db5f..b34800a1162 100644
--- a/test/MC/ARM/thumb.s
+++ b/test/MC/ARM/thumb.s
@@ -35,3 +35,6 @@
 
 @ CHECK: ldr	r3, [r1, r2]         @ encoding: [0x8b,0x58]
 	ldr	r3, [r1, r2]
+
+@ CHECK: bkpt  #2                  @ encoding: [0x02,0xbe]
+         bkpt  #2