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[X86ISelLowering] Consolidate duplicated code in a single place. 

llvm-svn: 261573
This commit is contained in:
Davide Italiano 2016-02-22 21:06:46 +00:00
parent d85e5a1303
commit 2ec4717c2c
2 changed files with 16 additions and 24 deletions
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38
llvm/lib/Target/X86/X86ISelLowering.cpp
View File

@ -2124,23 +2124,21 @@ X86TargetLowering::findRepresentativeClass(const TargetRegisterInfo *TRI,
return std::make_pair(RRC, Cost);
}
unsigned X86TargetLowering::getAddressSpace() const {
if (Subtarget.is64Bit())
return (getTargetMachine().getCodeModel() == CodeModel::Kernel) ? 256 : 257;
return 256;
}
bool X86TargetLowering::getStackCookieLocation(unsigned &AddressSpace,
unsigned &Offset) const {
if (!Subtarget.isTargetLinux())
return false;
if (Subtarget.is64Bit()) {
// %fs:0x28, unless we're using a Kernel code model, in which case it's %gs:
Offset = 0x28;
if (getTargetMachine().getCodeModel() == CodeModel::Kernel)
AddressSpace = 256;
else
AddressSpace = 257;
} else {
// %gs:0x14 on i386
Offset = 0x14;
AddressSpace = 256;
}
// %fs:0x28, unless we're using a Kernel code model, in which case it's %gs:
// %gs:0x14 on i386
Offset = (Subtarget.is64Bit()) ? 0x28 : 0x14;
AddressSpace = getAddressSpace();
return true;
}
@ -2152,19 +2150,11 @@ Value *X86TargetLowering::getSafeStackPointerLocation(IRBuilder<> &IRB) const {
// definition of TLS_SLOT_SAFESTACK in
// https://android.googlesource.com/platform/bionic/+/master/libc/private/bionic_tls.h
unsigned AddressSpace, Offset;
if (Subtarget.is64Bit()) {
// %fs:0x48, unless we're using a Kernel code model, in which case it's %gs:
Offset = 0x48;
if (getTargetMachine().getCodeModel() == CodeModel::Kernel)
AddressSpace = 256;
else
AddressSpace = 257;
} else {
// %gs:0x24 on i386
Offset = 0x24;
AddressSpace = 256;
}
// %fs:0x48, unless we're using a Kernel code model, in which case it's %gs:
// %gs:0x24 on i386
Offset = (Subtarget.is64Bit()) ? 0x48 : 0x24;
AddressSpace = getAddressSpace();
return ConstantExpr::getIntToPtr(
ConstantInt::get(Type::getInt32Ty(IRB.getContext()), Offset),
Type::getInt8PtrTy(IRB.getContext())->getPointerTo(AddressSpace));

2
llvm/lib/Target/X86/X86ISelLowering.h
View File

@ -1012,6 +1012,8 @@ namespace llvm {
unsigned GetAlignedArgumentStackSize(unsigned StackSize,
SelectionDAG &DAG) const;
unsigned getAddressSpace(void) const;
std::pair<SDValue,SDValue> FP_TO_INTHelper(SDValue Op, SelectionDAG &DAG,
bool isSigned,
bool isReplace) const;