[llvm] r197824 - Implement initial-exec TLS for PPC32.
Roman Divacky
rdivacky at freebsd.org
Fri Dec 20 10:08:54 PST 2013
Author: rdivacky
Date: Fri Dec 20 12:08:54 2013
New Revision: 197824
URL: http://llvm.org/viewvc/llvm-project?rev=197824&view=rev
Log:
Implement initial-exec TLS for PPC32.
Modified:
llvm/trunk/lib/Target/PowerPC/PPCAsmPrinter.cpp
llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp
llvm/trunk/lib/Target/PowerPC/PPCISelLowering.h
llvm/trunk/lib/Target/PowerPC/PPCInstr64Bit.td
llvm/trunk/lib/Target/PowerPC/PPCInstrInfo.td
llvm/trunk/test/CodeGen/PowerPC/tls.ll
Modified: llvm/trunk/lib/Target/PowerPC/PPCAsmPrinter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/PowerPC/PPCAsmPrinter.cpp?rev=197824&r1=197823&r2=197824&view=diff
==============================================================================
--- llvm/trunk/lib/Target/PowerPC/PPCAsmPrinter.cpp (original)
+++ llvm/trunk/lib/Target/PowerPC/PPCAsmPrinter.cpp Fri Dec 20 12:08:54 2013
@@ -301,6 +301,7 @@ MCSymbol *PPCAsmPrinter::lookUpOrCreateT
///
void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) {
MCInst TmpInst;
+ bool isPPC64 = Subtarget.isPPC64();
// Lower multi-instruction pseudo operations.
switch (MI->getOpcode()) {
@@ -494,12 +495,13 @@ void PPCAsmPrinter::EmitInstruction(cons
.addExpr(SymGotTprel));
return;
}
- case PPC::LDgotTprelL: {
+ case PPC::LDgotTprelL:
+ case PPC::LDgotTprelL32: {
// Transform %Xd = LDgotTprelL <ga:@sym>, %Xs
LowerPPCMachineInstrToMCInst(MI, TmpInst, *this, Subtarget.isDarwin());
// Change the opcode to LD.
- TmpInst.setOpcode(PPC::LD);
+ TmpInst.setOpcode(isPPC64 ? PPC::LD : PPC::LWZ);
const MachineOperand &MO = MI->getOperand(1);
const GlobalValue *GValue = MO.getGlobal();
MCSymbol *MOSymbol = getSymbol(GValue);
@@ -510,6 +512,24 @@ void PPCAsmPrinter::EmitInstruction(cons
OutStreamer.EmitInstruction(TmpInst);
return;
}
+
+ case PPC::PPC32GOT: {
+ MCSymbol *GOTSymbol = OutContext.GetOrCreateSymbol(StringRef("_GLOBAL_OFFSET_TABLE_"));
+ const MCExpr *SymGotTlsL =
+ MCSymbolRefExpr::Create(GOTSymbol, MCSymbolRefExpr::VK_PPC_LO,
+ OutContext);
+ const MCExpr *SymGotTlsHA =
+ MCSymbolRefExpr::Create(GOTSymbol, MCSymbolRefExpr::VK_PPC_HA,
+ OutContext);
+ OutStreamer.EmitInstruction(MCInstBuilder(PPC::LI)
+ .addReg(MI->getOperand(0).getReg())
+ .addExpr(SymGotTlsL));
+ OutStreamer.EmitInstruction(MCInstBuilder(PPC::ADDIS)
+ .addReg(MI->getOperand(0).getReg())
+ .addReg(MI->getOperand(0).getReg())
+ .addExpr(SymGotTlsHA));
+ return;
+ }
case PPC::ADDIStlsgdHA: {
// Transform: %Xd = ADDIStlsgdHA %X2, <ga:@sym>
// Into: %Xd = ADDIS8 %X2, sym at got@tlsgd at ha
Modified: llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp?rev=197824&r1=197823&r2=197824&view=diff
==============================================================================
--- llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/PowerPC/PPCISelLowering.cpp Fri Dec 20 12:08:54 2013
@@ -670,6 +670,7 @@ const char *PPCTargetLowering::getTarget
case PPCISD::ADDIS_TOC_HA: return "PPCISD::ADDIS_TOC_HA";
case PPCISD::LD_TOC_L: return "PPCISD::LD_TOC_L";
case PPCISD::ADDI_TOC_L: return "PPCISD::ADDI_TOC_L";
+ case PPCISD::PPC32_GOT: return "PPCISD::PPC32_GOT";
case PPCISD::ADDIS_GOT_TPREL_HA: return "PPCISD::ADDIS_GOT_TPREL_HA";
case PPCISD::LD_GOT_TPREL_L: return "PPCISD::LD_GOT_TPREL_L";
case PPCISD::ADD_TLS: return "PPCISD::ADD_TLS";
@@ -1431,18 +1432,19 @@ SDValue PPCTargetLowering::LowerGlobalTL
return DAG.getNode(PPCISD::Lo, dl, PtrVT, TGALo, Hi);
}
- if (!is64bit)
- llvm_unreachable("only local-exec is currently supported for ppc32");
-
if (Model == TLSModel::InitialExec) {
SDValue TGA = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0, 0);
SDValue TGATLS = DAG.getTargetGlobalAddress(GV, dl, PtrVT, 0,
PPCII::MO_TLS);
- SDValue GOTReg = DAG.getRegister(PPC::X2, MVT::i64);
- SDValue TPOffsetHi = DAG.getNode(PPCISD::ADDIS_GOT_TPREL_HA, dl,
- PtrVT, GOTReg, TGA);
+ SDValue GOTPtr;
+ if (is64bit) {
+ SDValue GOTReg = DAG.getRegister(PPC::X2, MVT::i64);
+ GOTPtr = DAG.getNode(PPCISD::ADDIS_GOT_TPREL_HA, dl,
+ PtrVT, GOTReg, TGA);
+ } else
+ GOTPtr = DAG.getNode(PPCISD::PPC32_GOT, dl, PtrVT);
SDValue TPOffset = DAG.getNode(PPCISD::LD_GOT_TPREL_L, dl,
- PtrVT, TGA, TPOffsetHi);
+ PtrVT, TGA, GOTPtr);
return DAG.getNode(PPCISD::ADD_TLS, dl, PtrVT, TPOffset, TGATLS);
}
Modified: llvm/trunk/lib/Target/PowerPC/PPCISelLowering.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/PowerPC/PPCISelLowering.h?rev=197824&r1=197823&r2=197824&view=diff
==============================================================================
--- llvm/trunk/lib/Target/PowerPC/PPCISelLowering.h (original)
+++ llvm/trunk/lib/Target/PowerPC/PPCISelLowering.h Fri Dec 20 12:08:54 2013
@@ -177,6 +177,8 @@ namespace llvm {
CR6SET,
CR6UNSET,
+ PPC32_GOT,
+
/// G8RC = ADDIS_GOT_TPREL_HA %X2, Symbol - Used by the initial-exec
/// TLS model, produces an ADDIS8 instruction that adds the GOT
/// base to sym\@got\@tprel\@ha.
Modified: llvm/trunk/lib/Target/PowerPC/PPCInstr64Bit.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/PowerPC/PPCInstr64Bit.td?rev=197824&r1=197823&r2=197824&view=diff
==============================================================================
--- llvm/trunk/lib/Target/PowerPC/PPCInstr64Bit.td (original)
+++ llvm/trunk/lib/Target/PowerPC/PPCInstr64Bit.td Fri Dec 20 12:08:54 2013
@@ -39,10 +39,6 @@ def s17imm64 : Operand<i64> {
def tocentry : Operand<iPTR> {
let MIOperandInfo = (ops i64imm:$imm);
}
-def PPCTLSRegOperand : AsmOperandClass {
- let Name = "TLSReg"; let PredicateMethod = "isTLSReg";
- let RenderMethod = "addTLSRegOperands";
-}
def tlsreg : Operand<i64> {
let EncoderMethod = "getTLSRegEncoding";
let ParserMatchClass = PPCTLSRegOperand;
Modified: llvm/trunk/lib/Target/PowerPC/PPCInstrInfo.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/PowerPC/PPCInstrInfo.td?rev=197824&r1=197823&r2=197824&view=diff
==============================================================================
--- llvm/trunk/lib/Target/PowerPC/PPCInstrInfo.td (original)
+++ llvm/trunk/lib/Target/PowerPC/PPCInstrInfo.td Fri Dec 20 12:08:54 2013
@@ -99,6 +99,8 @@ def PPCtoc_entry: SDNode<"PPCISD::TOC_EN
def PPCvmaddfp : SDNode<"PPCISD::VMADDFP", SDTFPTernaryOp, []>;
def PPCvnmsubfp : SDNode<"PPCISD::VNMSUBFP", SDTFPTernaryOp, []>;
+def PPCppc32GOT : SDNode<"PPCISD::PPC32_GOT", SDTIntLeaf, []>;
+
def PPCaddisGotTprelHA : SDNode<"PPCISD::ADDIS_GOT_TPREL_HA", SDTIntBinOp>;
def PPCldGotTprelL : SDNode<"PPCISD::LD_GOT_TPREL_L", SDTIntBinOp,
[SDNPMayLoad]>;
@@ -564,6 +566,14 @@ def memrix : Operand<iPTR> { // memri
def memr : Operand<iPTR> {
let MIOperandInfo = (ops ptr_rc:$ptrreg);
}
+def PPCTLSRegOperand : AsmOperandClass {
+ let Name = "TLSReg"; let PredicateMethod = "isTLSReg";
+ let RenderMethod = "addTLSRegOperands";
+}
+def tlsreg32 : Operand<i32> {
+ let EncoderMethod = "getTLSRegEncoding";
+ let ParserMatchClass = PPCTLSRegOperand;
+}
// PowerPC Predicate operand.
def pred : Operand<OtherVT> {
@@ -1994,6 +2004,10 @@ let PPC970_Unit = 1, neverHasSideEffects
defm ADD4 : XOForm_1r<31, 266, 0, (outs gprc:$rT), (ins gprc:$rA, gprc:$rB),
"add", "$rT, $rA, $rB", IIC_IntSimple,
[(set i32:$rT, (add i32:$rA, i32:$rB))]>;
+let isCodeGenOnly = 1 in
+def ADD4TLS : XOForm_1<31, 266, 0, (outs gprc:$rT), (ins gprc:$rA, tlsreg32:$rB),
+ "add $rT, $rA, $rB", IIC_IntSimple,
+ [(set i32:$rT, (add i32:$rA, tglobaltlsaddr:$rB))]>;
defm ADDC : XOForm_1rc<31, 10, 0, (outs gprc:$rT), (ins gprc:$rA, gprc:$rB),
"addc", "$rT, $rA, $rB", IIC_IntGeneral,
[(set i32:$rT, (addc i32:$rA, i32:$rB))]>,
@@ -2259,6 +2273,17 @@ def : Pat<(add i32:$in, (PPChi tjumptabl
def : Pat<(add i32:$in, (PPChi tblockaddress:$g, 0)),
(ADDIS $in, tblockaddress:$g)>;
+// Support for thread-local storage.
+def PPC32GOT: Pseudo<(outs gprc:$rD), (ins), "#PPC32GOT",
+ [(set i32:$rD, (PPCppc32GOT))]>;
+
+def LDgotTprelL32: Pseudo<(outs gprc:$rD), (ins s16imm:$disp, gprc_nor0:$reg),
+ "#LDgotTprelL32",
+ [(set i32:$rD,
+ (PPCldGotTprelL tglobaltlsaddr:$disp, i32:$reg))]>;
+def : Pat<(PPCaddTls i32:$in, tglobaltlsaddr:$g),
+ (ADD4TLS $in, tglobaltlsaddr:$g)>;
+
// Standard shifts. These are represented separately from the real shifts above
// so that we can distinguish between shifts that allow 5-bit and 6-bit shift
// amounts.
Modified: llvm/trunk/test/CodeGen/PowerPC/tls.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/PowerPC/tls.ll?rev=197824&r1=197823&r2=197824&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/PowerPC/tls.ll (original)
+++ llvm/trunk/test/CodeGen/PowerPC/tls.ll Fri Dec 20 12:08:54 2013
@@ -1,5 +1,6 @@
; RUN: llc -O0 < %s -march=ppc64 -mcpu=ppc64 | FileCheck -check-prefix=OPT0 %s
; RUN: llc -O1 < %s -march=ppc64 -mcpu=ppc64 | FileCheck -check-prefix=OPT1 %s
+; RUN: llc -O0 < %s -march=ppc32 -mcpu=ppc | FileCheck -check-prefix=OPT0-PPC32 %s
target triple = "powerpc64-unknown-linux-gnu"
@@ -38,3 +39,8 @@ entry:
; OPT1: ld [[REG2:[0-9]+]], a2 at got@tprel at l([[REG1]])
; OPT1: add {{[0-9]+}}, [[REG2]], a2 at tls
+;OPT0-PPC32-LABEL: main2:
+;OPT0-PPC32: li [[REG1:[0-9]+]], _GLOBAL_OFFSET_TABLE_ at l
+;OPT0-PPC32: addis [[REG1]], [[REG1]], _GLOBAL_OFFSET_TABLE_ at ha
+;OPT0-PPC32: lwz [[REG2:[0-9]+]], a2 at got@tprel at l([[REG1]])
+;OPT0-PPC32: add 3, [[REG2]], a2 at tls
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