From: Johnny Chen <johnny.chen@apple.com>
Date: Fri, 12 Feb 2010 20:48:24 +0000 (+0000)
Subject: Add SWP (Swap) and SWPB (Swap Byte) for disassembly only.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=b3e1bf54b29354c6d332cfaffcc86cd776fd4ca8;p=oota-llvm.git

Add SWP (Swap) and SWPB (Swap Byte) for disassembly only.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96010 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/ARM/ARMInstrInfo.td b/lib/Target/ARM/ARMInstrInfo.td
index 3ef197a74bf..3e4070b4aff 100644
--- a/lib/Target/ARM/ARMInstrInfo.td
+++ b/lib/Target/ARM/ARMInstrInfo.td
@@ -1863,6 +1863,27 @@ def STREXD : AIstrex<0b01, (outs GPR:$success),
                     []>;
 }
 
+// SWP/SWPB are deprecated in V6/V7 and for disassembly only.
+let mayLoad = 1 in {
+def SWP : AI<(outs GPR:$dst), (ins GPR:$src, GPR:$ptr), LdStExFrm, NoItinerary,
+             "swp", "\t$dst, $src, [$ptr]",
+             [/* For disassembly only; pattern left blank */]> {
+  let Inst{27-23} = 0b00010;
+  let Inst{22} = 0; // B = 0
+  let Inst{21-20} = 0b00;
+  let Inst{7-4} = 0b1001;
+}
+
+def SWPB : AI<(outs GPR:$dst), (ins GPR:$src, GPR:$ptr), LdStExFrm, NoItinerary,
+             "swpb", "\t$dst, $src, [$ptr]",
+             [/* For disassembly only; pattern left blank */]> {
+  let Inst{27-23} = 0b00010;
+  let Inst{22} = 1; // B = 1
+  let Inst{21-20} = 0b00;
+  let Inst{7-4} = 0b1001;
+}
+}
+
 //===----------------------------------------------------------------------===//
 // TLS Instructions
 //