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PPC: MCize most of the darwin PIC emission.
The last remaining bit is "bcl 20, 31, AnonSymbol", which I couldn't find the instruction definition for. Only whitespace changes in assembly output. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168541 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer
parent
e8ca482c97
commit
915558e775
@ -55,6 +55,7 @@
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/ADT/MapVector.h"
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#include "llvm/ADT/VariadicFunction.h"
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using namespace llvm;
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namespace {
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@ -558,6 +559,21 @@ static MCSymbol *GetAnonSym(MCSymbol *Sym, MCContext &Ctx) {
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return Ctx.GetOrCreateSymbol(Sym->getName() + "$tmp");
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}
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namespace {
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// Helper function to emit a custom MCInst.
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void emitMCInstImpl(MCStreamer &OutStreamer, unsigned Opcode,
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ArrayRef<const MCOperand *> Ops) {
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MCInst TmpInst;
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TmpInst.setOpcode(Opcode);
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for (unsigned I = 0, E = Ops.size(); I != E; ++I)
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TmpInst.addOperand(*Ops[I]);
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OutStreamer.EmitInstruction(TmpInst);
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}
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const VariadicFunction2<void, MCStreamer &, unsigned, MCOperand,
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emitMCInstImpl> emitMCInst = {};
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}
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void PPCDarwinAsmPrinter::
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EmitFunctionStubs(const MachineModuleInfoMachO::SymbolListTy &Stubs) {
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bool isPPC64 = TM.getDataLayout()->getPointerSizeInBits() == 64;
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@ -586,32 +602,52 @@ EmitFunctionStubs(const MachineModuleInfoMachO::SymbolListTy &Stubs) {
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OutStreamer.EmitLabel(Stub);
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OutStreamer.EmitSymbolAttribute(RawSym, MCSA_IndirectSymbol);
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// mflr r0
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emitMCInst(OutStreamer, PPC::MFLR, MCOperand::CreateReg(PPC::R0));
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// FIXME: MCize this.
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OutStreamer.EmitRawText(StringRef("\tmflr r0"));
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OutStreamer.EmitRawText("\tbcl 20,31," + Twine(AnonSymbol->getName()));
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OutStreamer.EmitRawText("\tbcl 20, 31, " + Twine(AnonSymbol->getName()));
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OutStreamer.EmitLabel(AnonSymbol);
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OutStreamer.EmitRawText(StringRef("\tmflr r11"));
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OutStreamer.EmitRawText("\taddis r11,r11,ha16("+Twine(LazyPtr->getName())+
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"-" + AnonSymbol->getName() + ")");
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OutStreamer.EmitRawText(StringRef("\tmtlr r0"));
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if (isPPC64)
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OutStreamer.EmitRawText("\tldu r12,lo16(" + Twine(LazyPtr->getName()) +
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"-" + AnonSymbol->getName() + ")(r11)");
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else
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OutStreamer.EmitRawText("\tlwzu r12,lo16(" + Twine(LazyPtr->getName()) +
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"-" + AnonSymbol->getName() + ")(r11)");
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OutStreamer.EmitRawText(StringRef("\tmtctr r12"));
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OutStreamer.EmitRawText(StringRef("\tbctr"));
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// mflr r11
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emitMCInst(OutStreamer, PPC::MFLR, MCOperand::CreateReg(PPC::R11));
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// addis r11, r11, ha16(LazyPtr - AnonSymbol)
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MCOperand Sub = MCOperand::CreateExpr(
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MCBinaryExpr::CreateSub(
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MCSymbolRefExpr::Create(LazyPtr, OutContext),
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MCSymbolRefExpr::Create(AnonSymbol, OutContext),
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OutContext));
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emitMCInst(OutStreamer, PPC::ADDIS, MCOperand::CreateReg(PPC::R11),
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MCOperand::CreateReg(PPC::R11), Sub);
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// mtlr r0
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emitMCInst(OutStreamer, PPC::MTLR, MCOperand::CreateReg(PPC::R0));
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if (isPPC64) {
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// ldu r12, lo16(LazyPtr - AnonSymbol)(r11)
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emitMCInst(OutStreamer, PPC::LDU, MCOperand::CreateReg(PPC::R12),
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Sub, Sub, MCOperand::CreateReg(PPC::R11));
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} else {
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// lwzu r12, lo16(LazyPtr - AnonSymbol)(r11)
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emitMCInst(OutStreamer, PPC::LWZU, MCOperand::CreateReg(PPC::R12),
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Sub, Sub, MCOperand::CreateReg(PPC::R11));
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}
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// mtctr r12
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emitMCInst(OutStreamer, PPC::MTCTR, MCOperand::CreateReg(PPC::R12));
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// bctr
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emitMCInst(OutStreamer, PPC::BCTR);
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OutStreamer.SwitchSection(LSPSection);
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OutStreamer.EmitLabel(LazyPtr);
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OutStreamer.EmitSymbolAttribute(RawSym, MCSA_IndirectSymbol);
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if (isPPC64)
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OutStreamer.EmitRawText(StringRef("\t.quad dyld_stub_binding_helper"));
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else
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OutStreamer.EmitRawText(StringRef("\t.long dyld_stub_binding_helper"));
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MCSymbol *DyldStubBindingHelper =
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OutContext.GetOrCreateSymbol(StringRef("dyld_stub_binding_helper"));
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if (isPPC64) {
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// .quad dyld_stub_binding_helper
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OutStreamer.EmitSymbolValue(DyldStubBindingHelper, 8);
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} else {
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// .long dyld_stub_binding_helper
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OutStreamer.EmitSymbolValue(DyldStubBindingHelper, 4);
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}
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}
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OutStreamer.AddBlankLine();
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return;
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@ -631,23 +667,44 @@ EmitFunctionStubs(const MachineModuleInfoMachO::SymbolListTy &Stubs) {
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EmitAlignment(4);
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OutStreamer.EmitLabel(Stub);
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OutStreamer.EmitSymbolAttribute(RawSym, MCSA_IndirectSymbol);
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OutStreamer.EmitRawText("\tlis r11,ha16(" + Twine(LazyPtr->getName()) +")");
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if (isPPC64)
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OutStreamer.EmitRawText("\tldu r12,lo16(" + Twine(LazyPtr->getName()) +
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")(r11)");
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else
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OutStreamer.EmitRawText("\tlwzu r12,lo16(" + Twine(LazyPtr->getName()) +
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")(r11)");
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OutStreamer.EmitRawText(StringRef("\tmtctr r12"));
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OutStreamer.EmitRawText(StringRef("\tbctr"));
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// lis r11, ha16(LazyPtr)
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MCOperand LazyPtrHa16 =
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MCOperand::CreateExpr(
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MCSymbolRefExpr::Create(LazyPtr, MCSymbolRefExpr::VK_PPC_DARWIN_HA16,
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OutContext));
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emitMCInst(OutStreamer, PPC::LIS, MCOperand::CreateReg(PPC::R11),
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LazyPtrHa16);
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MCOperand LazyPtrLo16 =
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MCOperand::CreateExpr(
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MCSymbolRefExpr::Create(LazyPtr, MCSymbolRefExpr::VK_PPC_DARWIN_LO16,
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OutContext));
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if (isPPC64) {
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// ldu r12, lo16(LazyPtr)(r11)
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emitMCInst(OutStreamer, PPC::LDU, MCOperand::CreateReg(PPC::R12),
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LazyPtrLo16, LazyPtrLo16, MCOperand::CreateReg(PPC::R11));
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} else {
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// lwzu r12, lo16(LazyPtr)(r11)
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emitMCInst(OutStreamer, PPC::LWZU, MCOperand::CreateReg(PPC::R12),
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LazyPtrLo16, LazyPtrLo16, MCOperand::CreateReg(PPC::R11));
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}
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// mtctr r12
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emitMCInst(OutStreamer, PPC::MTCTR, MCOperand::CreateReg(PPC::R12));
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// bctr
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emitMCInst(OutStreamer, PPC::BCTR);
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OutStreamer.SwitchSection(LSPSection);
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OutStreamer.EmitLabel(LazyPtr);
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OutStreamer.EmitSymbolAttribute(RawSym, MCSA_IndirectSymbol);
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if (isPPC64)
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OutStreamer.EmitRawText(StringRef("\t.quad dyld_stub_binding_helper"));
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else
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OutStreamer.EmitRawText(StringRef("\t.long dyld_stub_binding_helper"));
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MCSymbol *DyldStubBindingHelper =
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OutContext.GetOrCreateSymbol(StringRef("dyld_stub_binding_helper"));
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if (isPPC64) {
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// .quad dyld_stub_binding_helper
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OutStreamer.EmitSymbolValue(DyldStubBindingHelper, 8);
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} else {
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// .long dyld_stub_binding_helper
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OutStreamer.EmitSymbolValue(DyldStubBindingHelper, 4);
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}
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}
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OutStreamer.AddBlankLine();
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@ -1,6 +1,8 @@
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; RUN: llc < %s -relocation-model=static | FileCheck %s -check-prefix=STATIC
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; RUN: llc < %s -relocation-model=pic | FileCheck %s -check-prefix=PIC
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; RUN: llc < %s -relocation-model=pic -mtriple=powerpc64-apple-darwin8 | FileCheck %s -check-prefix=PIC64
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; RUN: llc < %s -relocation-model=dynamic-no-pic | FileCheck %s -check-prefix=DYNAMIC
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; RUN: llc < %s -relocation-model=dynamic-no-pic -mtriple=powerpc64-apple-darwin8 | FileCheck %s -check-prefix=DYNAMIC64
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; PR4482
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
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target triple = "powerpc-apple-darwin8"
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@ -16,10 +18,18 @@ entry:
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; PIC: bl L_exact_log2$stub
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; PIC: blr
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; PIC64: _foo:
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; PIC64: bl L_exact_log2$stub
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; PIC64: blr
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; DYNAMIC: _foo:
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; DYNAMIC: bl L_exact_log2$stub
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; DYNAMIC: blr
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; DYNAMIC64: _foo:
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; DYNAMIC64: bl L_exact_log2$stub
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; DYNAMIC64: blr
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%A = call i32 @exact_log2(i64 %x) nounwind
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ret i32 %A
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}
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@ -34,13 +44,13 @@ entry:
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; PIC: L_exact_log2$stub:
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; PIC: .indirect_symbol _exact_log2
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; PIC: mflr r0
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; PIC: bcl 20,31,L_exact_log2$stub$tmp
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; PIC: bcl 20, 31, L_exact_log2$stub$tmp
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; PIC: L_exact_log2$stub$tmp:
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; PIC: mflr r11
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; PIC: addis r11,r11,ha16(L_exact_log2$lazy_ptr-L_exact_log2$stub$tmp)
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; PIC: addis r11, r11, ha16(L_exact_log2$lazy_ptr-L_exact_log2$stub$tmp)
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; PIC: mtlr r0
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; PIC: lwzu r12,lo16(L_exact_log2$lazy_ptr-L_exact_log2$stub$tmp)(r11)
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; PIC: lwzu r12, lo16(L_exact_log2$lazy_ptr-L_exact_log2$stub$tmp)(r11)
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; PIC: mtctr r12
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; PIC: bctr
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@ -51,12 +61,32 @@ entry:
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; PIC: .subsections_via_symbols
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; PIC64: .section __TEXT,__picsymbolstub1,symbol_stubs,pure_instructions,32
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; PIC64: L_exact_log2$stub:
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; PIC64: .indirect_symbol _exact_log2
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; PIC64: mflr r0
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; PIC64: bcl 20, 31, L_exact_log2$stub$tmp
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; PIC64: L_exact_log2$stub$tmp:
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; PIC64: mflr r11
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; PIC64: addis r11, r11, ha16(L_exact_log2$lazy_ptr-L_exact_log2$stub$tmp)
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; PIC64: mtlr r0
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; PIC64: ldu r12, lo16(L_exact_log2$lazy_ptr-L_exact_log2$stub$tmp)(r11)
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; PIC64: mtctr r12
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; PIC64: bctr
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; PIC64: .section __DATA,__la_symbol_ptr,lazy_symbol_pointers
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; PIC64: L_exact_log2$lazy_ptr:
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; PIC64: .indirect_symbol _exact_log2
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; PIC64: .quad dyld_stub_binding_helper
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; PIC64: .subsections_via_symbols
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; DYNAMIC: .section __TEXT,__symbol_stub1,symbol_stubs,pure_instructions,16
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; DYNAMIC: L_exact_log2$stub:
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; DYNAMIC: .indirect_symbol _exact_log2
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; DYNAMIC: lis r11,ha16(L_exact_log2$lazy_ptr)
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; DYNAMIC: lwzu r12,lo16(L_exact_log2$lazy_ptr)(r11)
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; DYNAMIC: lis r11, ha16(L_exact_log2$lazy_ptr)
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; DYNAMIC: lwzu r12, lo16(L_exact_log2$lazy_ptr)(r11)
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; DYNAMIC: mtctr r12
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; DYNAMIC: bctr
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@ -65,7 +95,15 @@ entry:
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; DYNAMIC: .indirect_symbol _exact_log2
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; DYNAMIC: .long dyld_stub_binding_helper
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; DYNAMIC64: .section __TEXT,__symbol_stub1,symbol_stubs,pure_instructions,16
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; DYNAMIC64: L_exact_log2$stub:
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; DYNAMIC64: .indirect_symbol _exact_log2
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; DYNAMIC64: lis r11, ha16(L_exact_log2$lazy_ptr)
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; DYNAMIC64: ldu r12, lo16(L_exact_log2$lazy_ptr)(r11)
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; DYNAMIC64: mtctr r12
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; DYNAMIC64: bctr
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; DYNAMIC64: .section __DATA,__la_symbol_ptr,lazy_symbol_pointers
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; DYNAMIC64: L_exact_log2$lazy_ptr:
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; DYNAMIC64: .indirect_symbol _exact_log2
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; DYNAMIC64: .quad dyld_stub_binding_helper
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@ -10,8 +10,8 @@ entry:
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; CHECK: .section __TEXT,__symbol_stub1,symbol_stubs,pure_instructions,16
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; CHECK: ___floatditf$stub:
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; CHECK: .indirect_symbol ___floatditf
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; CHECK: lis r11,ha16(___floatditf$lazy_ptr)
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; CHECK: lwzu r12,lo16(___floatditf$lazy_ptr)(r11)
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; CHECK: lis r11, ha16(___floatditf$lazy_ptr)
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; CHECK: lwzu r12, lo16(___floatditf$lazy_ptr)(r11)
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; CHECK: mtctr r12
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; CHECK: bctr
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; CHECK: .section __DATA,__la_symbol_ptr,lazy_symbol_pointers
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