[mips] [IAS] Add support for the .insn directive.

Summary:
This assembler directive marks the current label as an instruction label in microMIPS and MIPS16.

This initial implementation works only for microMIPS.

Reviewers: dsanders

Reviewed By: dsanders

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D8006

llvm-svn: 235084

1 files changed, 8 insertions, 2 deletions

diff --git a/llvm/lib/Target/Mips/MCTargetDesc/MipsELFStreamer.cpp b/llvm/lib/Target/Mips/MCTargetDesc/MipsELFStreamer.cpp
index 8eb29074a22..6d1d9f4f223 100644
--- a/llvm/lib/Target/Mips/MCTargetDesc/MipsELFStreamer.cpp
+++ b/llvm/lib/Target/Mips/MCTargetDesc/MipsELFStreamer.cpp
@@ -21,8 +21,6 @@ void MipsELFStreamer::EmitInstruction(const MCInst &Inst,
 
   MCContext &Context = getContext();
   const MCRegisterInfo *MCRegInfo = Context.getRegisterInfo();
-  MipsTargetELFStreamer *ELFTargetStreamer =
-      static_cast<MipsTargetELFStreamer *>(getTargetStreamer());
 
   for (unsigned OpIndex = 0; OpIndex < Inst.getNumOperands(); ++OpIndex) {
     const MCOperand &Op = Inst.getOperand(OpIndex);
@@ -34,6 +32,14 @@ void MipsELFStreamer::EmitInstruction(const MCInst &Inst,
     RegInfoRecord->SetPhysRegUsed(Reg, MCRegInfo);
   }
 
+  createPendingLabelRelocs();
+}
+
+void MipsELFStreamer::createPendingLabelRelocs() {
+  MipsTargetELFStreamer *ELFTargetStreamer =
+      static_cast<MipsTargetELFStreamer *>(getTargetStreamer());
+
+  // FIXME: Also mark labels when in MIPS16 mode.
   if (ELFTargetStreamer->isMicroMipsEnabled()) {
     for (auto Label : Labels) {
       MCSymbolData &Data = getOrCreateSymbolData(Label);