[llvm] r188537 - This patch implements wait instruction for mips. Examples are added in test files.

[Vladimir Medic]

Author: vmedic
Date: Fri Aug 16 05:17:03 2013
New Revision: 188537

URL: http://llvm.org/viewvc/llvm-project?rev=188537&view=rev
Log:
This patch implements wait instruction for mips. Examples are added in test files.

Modified:
    llvm/trunk/lib/Target/Mips/MipsInstrInfo.td
    llvm/trunk/test/MC/Mips/mips-control-instructions.s

Modified: llvm/trunk/lib/Target/Mips/MipsInstrInfo.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Mips/MipsInstrInfo.td?rev=188537&r1=188536&r2=188537&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Mips/MipsInstrInfo.td (original)
+++ llvm/trunk/lib/Target/Mips/MipsInstrInfo.td Fri Aug 16 05:17:03 2013
@@ -673,6 +673,15 @@ class DEI_FT<string opstr, RegisterOpera
   InstSE<(outs RO:$rt), (ins),
          !strconcat(opstr, "\t$rt"), [], NoItinerary, FrmOther>;
 
+// Wait
+class WAIT_FT<string opstr> :
+  InstSE<(outs), (ins), opstr, [], NoItinerary, FrmOther> {
+  let Inst{31-26} = 0x10;
+  let Inst{25}    = 1;
+  let Inst{24-6}  = 0;
+  let Inst{5-0}   = 0x20;
+}
+
 // Sync
 let hasSideEffects = 1 in
 class SYNC_FT :
@@ -990,6 +999,8 @@ def DERET : ER_FT<"deret">, ER_FM<0x1f>;
 def EI : DEI_FT<"ei", GPR32Opnd>, EI_FM<1>;
 def DI : DEI_FT<"di", GPR32Opnd>, EI_FM<0>;
 
+def WAIT : WAIT_FT<"wait">;
+
 /// Load-linked, Store-conditional
 let Predicates = [NotN64, HasStdEnc] in {
   def LL : LLBase<"ll", GPR32Opnd, mem>, LW_FM<0x30>;

Modified: llvm/trunk/test/MC/Mips/mips-control-instructions.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/Mips/mips-control-instructions.s?rev=188537&r1=188536&r2=188537&view=diff
==============================================================================
--- llvm/trunk/test/MC/Mips/mips-control-instructions.s (original)
+++ llvm/trunk/test/MC/Mips/mips-control-instructions.s Fri Aug 16 05:17:03 2013
@@ -16,6 +16,7 @@
 # CHECK32:    ei                         # encoding: [0x41,0x60,0x60,0x20]
 # CHECK32:    ei                         # encoding: [0x41,0x60,0x60,0x20]
 # CHECK32:    ei      $10                # encoding: [0x41,0x6a,0x60,0x20]
+# CHECK32:    wait                       # encoding: [0x42,0x00,0x00,0x20]
 
 # CHECK64:    break                      # encoding: [0x00,0x00,0x00,0x0d]
 # CHECK64:    break   7, 0               # encoding: [0x00,0x07,0x00,0x0d]
@@ -30,6 +31,7 @@
 # CHECK64:    ei                         # encoding: [0x41,0x60,0x60,0x20]
 # CHECK64:    ei                         # encoding: [0x41,0x60,0x60,0x20]
 # CHECK64:    ei      $10                # encoding: [0x41,0x6a,0x60,0x20]
+# CHECK64:    wait                       # encoding: [0x42,0x00,0x00,0x20]
     break
     break 7
     break 7,5
@@ -44,3 +46,5 @@
     ei
     ei  $0
     ei  $10
+
+    wait