[mips] Define "trap" as a pseudo instruction that turns into "break 0, 0".
llvm-svn: 190224
diff --git a/llvm/lib/Target/Mips/MipsCodeEmitter.cpp b/llvm/lib/Target/Mips/MipsCodeEmitter.cpp
index 0f1917a..b50edf1 100644
--- a/llvm/lib/Target/Mips/MipsCodeEmitter.cpp
+++ b/llvm/lib/Target/Mips/MipsCodeEmitter.cpp
@@ -327,6 +327,10 @@
BuildMI(MBB, &*MI, MI->getDebugLoc(), II->get(Mips::BEQ)).addReg(Mips::ZERO)
.addReg(Mips::ZERO).addOperand(MI->getOperand(0));
break;
+ case Mips::TRAP:
+ BuildMI(MBB, &*MI, MI->getDebugLoc(), II->get(Mips::BREAK)).addImm(0)
+ .addImm(0);
+ break;
case Mips::JALRPseudo:
BuildMI(MBB, &*MI, MI->getDebugLoc(), II->get(Mips::JALR), Mips::RA)
.addReg(MI->getOperand(0).getReg());
diff --git a/llvm/lib/Target/Mips/MipsInstrInfo.td b/llvm/lib/Target/Mips/MipsInstrInfo.td
index 9fb2a75..65dfaed 100644
--- a/llvm/lib/Target/Mips/MipsInstrInfo.td
+++ b/llvm/lib/Target/Mips/MipsInstrInfo.td
@@ -783,9 +783,12 @@
InstSE<(outs RO:$rt, RO:$rd, uimm16:$sel), (ins),
!strconcat(asmstr, "\t$rt, $rd, $sel"), [], NoItinerary, FrmFR>;
-let isBarrier = 1, isTerminator = 1, isCodeGenOnly = 1 in
-def TRAP : InstSE<(outs), (ins), "break", [(trap)], NoItinerary, FrmOther> {
- let Inst = 0x0000000d;
+class TrapBase<Instruction RealInst>
+ : PseudoSE<(outs), (ins), [(trap)], NoItinerary>,
+ PseudoInstExpansion<(RealInst 0, 0)> {
+ let isBarrier = 1;
+ let isTerminator = 1;
+ let isCodeGenOnly = 1;
}
//===----------------------------------------------------------------------===//
@@ -941,6 +944,7 @@
def BREAK : BRK_FT<"break">, BRK_FM<0xd>;
def SYSCALL : SYS_FT<"syscall">, SYS_FM<0xc>;
+def TRAP : TrapBase<BREAK>;
def ERET : ER_FT<"eret">, ER_FM<0x18>;
def DERET : ER_FT<"deret">, ER_FM<0x1f>;