From: Zoran Jovanovic <zoran.jovanovic@imgtec.com>
Date: Thu, 20 Mar 2014 10:41:37 +0000 (+0000)
Subject: Provide an operand for microMIPS wait instruction.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=37fb9b959107ba084e097bd14347aa900e5234a4;p=oota-llvm.git

Provide an operand for microMIPS wait instruction.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204329 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/Mips/MicroMipsInstrFormats.td b/lib/Target/Mips/MicroMipsInstrFormats.td
index 1dc8f428a33..9fc2f383123 100644
--- a/lib/Target/Mips/MicroMipsInstrFormats.td
+++ b/lib/Target/Mips/MicroMipsInstrFormats.td
@@ -375,11 +375,12 @@ class SYS_FM_MM : MMArch {
   let Inst{5-0}   = 0x3c;
 }
 
-class WAIT_FM_MM : MMArch {
+class WAIT_FM_MM {
+  bits<10> code_;
   bits<32> Inst;
 
   let Inst{31-26} = 0x00;
-  let Inst{25-16} = 0x00;
+  let Inst{25-16} = code_;
   let Inst{15-6}  = 0x24d;
   let Inst{5-0}   = 0x3c;
 }
diff --git a/lib/Target/Mips/MicroMipsInstrInfo.td b/lib/Target/Mips/MicroMipsInstrInfo.td
index 588eacb8f2f..15be0593089 100644
--- a/lib/Target/Mips/MicroMipsInstrInfo.td
+++ b/lib/Target/Mips/MicroMipsInstrInfo.td
@@ -95,6 +95,10 @@ class JumpLinkRegMM16<string opstr, RegisterOperand RO> :
 def MOVE16_MM : MoveMM16<"move", GPR32Opnd>, MOVE_FM_MM16<0x03>;
 def JALR16_MM : JumpLinkRegMM16<"jalr", GPR32Opnd>, JALR_FM_MM16<0x0e>;
 
+class WaitMM<string opstr> :
+  InstSE<(outs), (ins uimm10:$code_), !strconcat(opstr, "\t$code_"), [],
+         NoItinerary, FrmOther, opstr>;
+
 let DecoderNamespace = "MicroMips", Predicates = [InMicroMips] in {
   /// Arithmetic Instructions (ALU Immediate)
   def ADDiu_MM : MMRel, ArithLogicI<"addiu", simm16, GPR32Opnd>,
@@ -257,7 +261,7 @@ let DecoderNamespace = "MicroMips", Predicates = [InMicroMips] in {
   def SYNC_MM    : MMRel, SYNC_FT<"sync">, SYNC_FM_MM;
   def BREAK_MM   : MMRel, BRK_FT<"break">, BRK_FM_MM;
   def SYSCALL_MM : MMRel, SYS_FT<"syscall">, SYS_FM_MM;
-  def WAIT_MM    : MMRel, WAIT_FT<"wait">, WAIT_FM_MM;
+  def WAIT_MM    : WaitMM<"wait">, WAIT_FM_MM;
   def ERET_MM    : MMRel, ER_FT<"eret">, ER_FM_MM<0x3cd>;
   def DERET_MM   : MMRel, ER_FT<"deret">, ER_FM_MM<0x38d>;
   def EI_MM      : MMRel, DEI_FT<"ei", GPR32Opnd>, EI_FM_MM<0x15d>;
@@ -282,3 +286,11 @@ let DecoderNamespace = "MicroMips", Predicates = [InMicroMips] in {
   def LL_MM : LLBaseMM<"ll", GPR32Opnd>, LL_FM_MM<0x3>;
   def SC_MM : SCBaseMM<"sc", GPR32Opnd>, LL_FM_MM<0xb>;
 }
+
+//===----------------------------------------------------------------------===//
+// MicroMips instruction aliases
+//===----------------------------------------------------------------------===//
+
+let Predicates = [InMicroMips] in {
+  def : InstAlias<"wait", (WAIT_MM 0x0), 1>;
+}
diff --git a/lib/Target/Mips/MipsInstrInfo.td b/lib/Target/Mips/MipsInstrInfo.td
index b6ee7b1b4cd..3cf59dfb282 100644
--- a/lib/Target/Mips/MipsInstrInfo.td
+++ b/lib/Target/Mips/MipsInstrInfo.td
@@ -1017,10 +1017,10 @@ def DERET : MMRel, ER_FT<"deret">, ER_FM<0x1f>;
 def EI : MMRel, DEI_FT<"ei", GPR32Opnd>, EI_FM<1>;
 def DI : MMRel, DEI_FT<"di", GPR32Opnd>, EI_FM<0>;
 
-def WAIT : MMRel, WAIT_FT<"wait">, WAIT_FM;
+let Predicates = [NotInMicroMips] in {
+def WAIT : WAIT_FT<"wait">, WAIT_FM;
 
 /// Load-linked, Store-conditional
-let Predicates = [NotInMicroMips] in {
 def LL : LLBase<"ll", GPR32Opnd>, LW_FM<0x30>;
 def SC : SCBase<"sc", GPR32Opnd>, LW_FM<0x38>;
 }
diff --git a/test/MC/Mips/micromips-control-instructions.s b/test/MC/Mips/micromips-control-instructions.s
index 632fb5390b8..8170a9c28db 100644
--- a/test/MC/Mips/micromips-control-instructions.s
+++ b/test/MC/Mips/micromips-control-instructions.s
@@ -23,6 +23,7 @@
 # CHECK-EL:    ei                         # encoding: [0x00,0x00,0x7c,0x57]
 # CHECK-EL:    ei  $10                    # encoding: [0x0a,0x00,0x7c,0x57]
 # CHECK-EL:    wait                       # encoding: [0x00,0x00,0x7c,0x93]
+# CHECK-EL:    wait 17                    # encoding: [0x11,0x00,0x7c,0x93]
 #------------------------------------------------------------------------------
 # Big endian
 #------------------------------------------------------------------------------
@@ -40,6 +41,7 @@
 # CHECK-EB:   ei                          # encoding: [0x00,0x00,0x57,0x7c]
 # CHECK-EB:   ei  $10                     # encoding: [0x00,0x0a,0x57,0x7c]
 # CHECK-EB:   wait                        # encoding: [0x00,0x00,0x93,0x7c]
+# CHECK-EB:   wait 17                     # encoding: [0x00,0x11,0x93,0x7c]
 
     break
     break 7
@@ -55,3 +57,4 @@
     ei $0
     ei $10
     wait
+    wait 17