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Use MCSymbols for FastISel.

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The summary is that it moves the mangling earlier and replaces a few
calls to .addExternalSymbol with addSym.

I originally wanted to replace all the uses of addExternalSymbol with
addSym, but noticed it was a lot of work and doesn't need to be done
all at once.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240395 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2015-06-23 12:21:54 +00:00
parent b7f5b8b4b2
commit b9ed9af341
12 changed files with 96 additions and 41 deletions
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29
lib/Target/AArch64/AArch64FastISel.cpp
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@@ -36,6 +36,7 @@
#include "llvm/IR/Instructions.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/Operator.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/Support/CommandLine.h"
using namespace llvm;
@@ -3070,9 +3071,9 @@ bool AArch64FastISel::fastLowerCall(CallLoweringInfo &CLI) {
bool IsTailCall = CLI.IsTailCall;
bool IsVarArg = CLI.IsVarArg;
const Value *Callee = CLI.Callee;
const char *SymName = CLI.SymName;
MCSymbol *Symbol = CLI.Symbol;
if (!Callee && !SymName)
if (!Callee && !Symbol)
return false;
// Allow SelectionDAG isel to handle tail calls.
@@ -3134,8 +3135,8 @@ bool AArch64FastISel::fastLowerCall(CallLoweringInfo &CLI) {
if (CM == CodeModel::Small) {
const MCInstrDesc &II = TII.get(Addr.getReg() ? AArch64::BLR : AArch64::BL);
MIB = BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc, II);
if (SymName)
MIB.addExternalSymbol(SymName, 0);
if (Symbol)
MIB.addSym(Symbol, 0);
else if (Addr.getGlobalValue())
MIB.addGlobalAddress(Addr.getGlobalValue(), 0, 0);
else if (Addr.getReg()) {
@@ -3145,18 +3146,18 @@ bool AArch64FastISel::fastLowerCall(CallLoweringInfo &CLI) {
return false;
} else {
unsigned CallReg = 0;
if (SymName) {
if (Symbol) {
unsigned ADRPReg = createResultReg(&AArch64::GPR64commonRegClass);
BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc, TII.get(AArch64::ADRP),
ADRPReg)
.addExternalSymbol(SymName, AArch64II::MO_GOT | AArch64II::MO_PAGE);
.addSym(Symbol, AArch64II::MO_GOT | AArch64II::MO_PAGE);
CallReg = createResultReg(&AArch64::GPR64RegClass);
BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc, TII.get(AArch64::LDRXui),
CallReg)
.addReg(ADRPReg)
.addExternalSymbol(SymName, AArch64II::MO_GOT | AArch64II::MO_PAGEOFF |
AArch64II::MO_NC);
BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc,
TII.get(AArch64::LDRXui), CallReg)
.addReg(ADRPReg)
.addSym(Symbol,
AArch64II::MO_GOT | AArch64II::MO_PAGEOFF | AArch64II::MO_NC);
} else if (Addr.getGlobalValue())
CallReg = materializeGV(Addr.getGlobalValue());
else if (Addr.getReg())
@@ -3460,7 +3461,8 @@ bool AArch64FastISel::fastLowerIntrinsicCall(const IntrinsicInst *II) {
}
CallLoweringInfo CLI;
CLI.setCallee(TLI.getLibcallCallingConv(LC), II->getType(),
MCContext &Ctx = MF->getContext();
CLI.setCallee(DL, Ctx, TLI.getLibcallCallingConv(LC), II->getType(),
TLI.getLibcallName(LC), std::move(Args));
if (!lowerCallTo(CLI))
return false;
@@ -4734,7 +4736,8 @@ bool AArch64FastISel::selectFRem(const Instruction *I) {
}
CallLoweringInfo CLI;
CLI.setCallee(TLI.getLibcallCallingConv(LC), I->getType(),
MCContext &Ctx = MF->getContext();
CLI.setCallee(DL, Ctx, TLI.getLibcallCallingConv(LC), I->getType(),
TLI.getLibcallName(LC), std::move(Args));
if (!lowerCallTo(CLI))
return false;