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Add a MCTargetStreamer interface.

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This patch fixes an old FIXME by creating a MCTargetStreamer interface
and moving the target specific functions for ARM, Mips and PPC to it.

The ARM streamer is still declared in a common place because it is
used from lib/CodeGen/ARMException.cpp, but the Mips and PPC are
completely hidden in the corresponding Target directories.

I will send an email to llvmdev with instructions on how to use this.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192181 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2013-10-08 13:08:17 +00:00
parent 26c46ba11c
commit 320296a4cf
34 changed files with 559 additions and 394 deletions
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lib/Target/ARM/ARMAsmPrinter.cpp
+5 -3
View File
@@ -1152,6 +1152,8 @@ void ARMAsmPrinter::EmitUnwindingInstruction(const MachineInstr *MI) {
assert(MI->getFlag(MachineInstr::FrameSetup) &&
"Only instruction which are involved into frame setup code are allowed");
MCTargetStreamer &TS = OutStreamer.getTargetStreamer();
ARMTargetStreamer &ATS = static_cast<ARMTargetStreamer &>(TS);
const MachineFunction &MF = *MI->getParent()->getParent();
const TargetRegisterInfo *RegInfo = MF.getTarget().getRegisterInfo();
const ARMFunctionInfo &AFI = *MF.getInfo<ARMFunctionInfo>();
@@ -1214,7 +1216,7 @@ void ARMAsmPrinter::EmitUnwindingInstruction(const MachineInstr *MI) {
RegList.push_back(SrcReg);
break;
}
OutStreamer.EmitRegSave(RegList, Opc == ARM::VSTMDDB_UPD);
ATS.emitRegSave(RegList, Opc == ARM::VSTMDDB_UPD);
} else {
// Changes of stack / frame pointer.
if (SrcReg == ARM::SP) {
@@ -1262,11 +1264,11 @@ void ARMAsmPrinter::EmitUnwindingInstruction(const MachineInstr *MI) {
if (DstReg == FramePtr && FramePtr != ARM::SP)
// Set-up of the frame pointer. Positive values correspond to "add"
// instruction.
OutStreamer.EmitSetFP(FramePtr, ARM::SP, -Offset);
ATS.emitSetFP(FramePtr, ARM::SP, -Offset);
else if (DstReg == ARM::SP) {
// Change of SP by an offset. Positive values correspond to "sub"
// instruction.
OutStreamer.EmitPad(Offset);
ATS.emitPad(Offset);
} else {
MI->dump();
llvm_unreachable("Unsupported opcode for unwinding information");