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[mips] Initial implementation of -mabicalls/-mno-abicalls.

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This patch implements the main rules for -mno-abicalls such as reserving $gp,
and emitting the correct .option directive.

Patch by Matheus Almeida and Toma Tabacu

Differential Revision: http://reviews.llvm.org/D4231


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@215194 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Daniel Sanders
2014-08-08 10:01:29 +00:00
parent bbdf1e0432
commit da52aa04d9
5 changed files with 20 additions and 9 deletions
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13
lib/Target/Mips/MipsSubtarget.cpp
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@@ -107,12 +107,13 @@ MipsSubtarget::MipsSubtarget(const std::string &TT, const std::string &CPU,
MipsTargetMachine *_TM)
: MipsGenSubtargetInfo(TT, CPU, FS), MipsArchVersion(Mips32),
MipsABI(UnknownABI), IsLittle(little), IsSingleFloat(false),
IsFPXX(false), IsFP64bit(false), UseOddSPReg(true), IsNaN2008bit(false),
IsGP64bit(false), HasVFPU(false), HasCnMips(false), IsLinux(true),
HasMips3_32(false), HasMips3_32r2(false), HasMips4_32(false),
HasMips4_32r2(false), HasMips5_32r2(false), InMips16Mode(false),
InMips16HardFloat(Mips16HardFloat), InMicroMipsMode(false), HasDSP(false),
HasDSPR2(false), AllowMixed16_32(Mixed16_32 | Mips_Os16), Os16(Mips_Os16),
IsFPXX(false), IsABICalls(true), IsFP64bit(false), UseOddSPReg(true),
IsNaN2008bit(false), IsGP64bit(false), HasVFPU(false), HasCnMips(false),
IsLinux(true), HasMips3_32(false), HasMips3_32r2(false),
HasMips4_32(false), HasMips4_32r2(false), HasMips5_32r2(false),
InMips16Mode(false), InMips16HardFloat(Mips16HardFloat),
InMicroMipsMode(false), HasDSP(false), HasDSPR2(false),
AllowMixed16_32(Mixed16_32 | Mips_Os16), Os16(Mips_Os16),
HasMSA(false), TM(_TM), TargetTriple(TT),
DL(computeDataLayout(initializeSubtargetDependencies(CPU, FS, TM))),
TSInfo(DL), JITInfo(), InstrInfo(MipsInstrInfo::create(*this)),