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[SystemZ] Add support for llvm.thread.pointer intrinsic.

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Differential Revision: http://reviews.llvm.org/D19054

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@266844 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Marcin Koscielnicki 2016-04-20 01:03:48 +00:00
parent 7b1322cacb
commit ac5701a6b7
3 changed files with 33 additions and 8 deletions
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26
lib/Target/SystemZ/SystemZISelLowering.cpp
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@ -2533,14 +2533,9 @@ SDValue SystemZTargetLowering::lowerTLSGetOffset(GlobalAddressSDNode *Node,
return DAG.getCopyFromReg(Chain, DL, SystemZ::R2D, PtrVT, Glue);
}
SDValue SystemZTargetLowering::lowerGlobalTLSAddress(GlobalAddressSDNode *Node,
SelectionDAG &DAG) const {
if (DAG.getTarget().Options.EmulatedTLS)
return LowerToTLSEmulatedModel(Node, DAG);
SDLoc DL(Node);
const GlobalValue *GV = Node->getGlobal();
SDValue SystemZTargetLowering::lowerThreadPointer(const SDLoc &DL,
SelectionDAG &DAG) const {
EVT PtrVT = getPointerTy(DAG.getDataLayout());
TLSModel::Model model = DAG.getTarget().getTLSModel(GV);
// The high part of the thread pointer is in access register 0.
SDValue TPHi = DAG.getNode(SystemZISD::EXTRACT_ACCESS, DL, MVT::i32,
@ -2555,7 +2550,19 @@ SDValue SystemZTargetLowering::lowerGlobalTLSAddress(GlobalAddressSDNode *Node,
// Merge them into a single 64-bit address.
SDValue TPHiShifted = DAG.getNode(ISD::SHL, DL, PtrVT, TPHi,
DAG.getConstant(32, DL, PtrVT));
SDValue TP = DAG.getNode(ISD::OR, DL, PtrVT, TPHiShifted, TPLo);
return DAG.getNode(ISD::OR, DL, PtrVT, TPHiShifted, TPLo);
}
SDValue SystemZTargetLowering::lowerGlobalTLSAddress(GlobalAddressSDNode *Node,
SelectionDAG &DAG) const {
if (DAG.getTarget().Options.EmulatedTLS)
return LowerToTLSEmulatedModel(Node, DAG);
SDLoc DL(Node);
const GlobalValue *GV = Node->getGlobal();
EVT PtrVT = getPointerTy(DAG.getDataLayout());
TLSModel::Model model = DAG.getTarget().getTLSModel(GV);
SDValue TP = lowerThreadPointer(DL, DAG);
// Get the offset of GA from the thread pointer, based on the TLS model.
SDValue Offset;
@ -3396,6 +3403,9 @@ SystemZTargetLowering::lowerINTRINSIC_WO_CHAIN(SDValue Op,
unsigned Id = cast<ConstantSDNode>(Op.getOperand(0))->getZExtValue();
switch (Id) {
case Intrinsic::thread_pointer:
return lowerThreadPointer(SDLoc(Op), DAG);
case Intrinsic::s390_vpdi:
return DAG.getNode(SystemZISD::PERMUTE_DWORDS, SDLoc(Op), Op.getValueType(),
Op.getOperand(1), Op.getOperand(2), Op.getOperand(3));

1
lib/Target/SystemZ/SystemZISelLowering.h
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@ -464,6 +464,7 @@ private:
SDValue lowerTLSGetOffset(GlobalAddressSDNode *Node,
SelectionDAG &DAG, unsigned Opcode,
SDValue GOTOffset) const;
SDValue lowerThreadPointer(const SDLoc &DL, SelectionDAG &DAG) const;
SDValue lowerGlobalTLSAddress(GlobalAddressSDNode *Node,
SelectionDAG &DAG) const;
SDValue lowerBlockAddress(BlockAddressSDNode *Node,

14
test/CodeGen/SystemZ/builtins.ll Normal file
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@ -0,0 +1,14 @@
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
; Function Attrs: nounwind readnone
declare i8* @llvm.thread.pointer() #1
define i8* @thread_pointer() {
; CHECK: thread_pointer:
; CHECK: ear [[REG1:%r[0-5]]], %a0
; CHECK: sllg %r2, [[REG1]], 32
; CHECK: ear %r2, %a1
; CHECK: br %r14
%1 = tail call i8* @llvm.thread.pointer()
ret i8* %1
}