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author | Bruno Cardoso Lopes <bruno.cardoso@gmail.com> | 2008-07-05 19:05:21 +0000 |
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committer | Bruno Cardoso Lopes <bruno.cardoso@gmail.com> | 2008-07-05 19:05:21 +0000 |
commit | 225ca9cdd70de3d12641b0aba7daf6cb568a7ebd (patch) | |
tree | 4e9448b1e96f4e7792d2dcb85781c53ddef8dd39 /lib/Target/Mips/MipsSubtarget.h | |
parent | 126d90770bdb17e6925b2fe26de99aa079b7b9b3 (diff) | |
download | llvm-225ca9cdd70de3d12641b0aba7daf6cb568a7ebd.tar.gz llvm-225ca9cdd70de3d12641b0aba7daf6cb568a7ebd.tar.bz2 llvm-225ca9cdd70de3d12641b0aba7daf6cb568a7ebd.tar.xz |
Several changes to Mips backend, experimental fp support being the most
important.
- Cleanup in the Subtarget info with addition of new features, not all support
yet, but they allow the future inclusion of features easier. Among new features,
we have : Arch family info (mips1, mips2, ...), ABI info (o32, eabi), 64-bit
integer
and float registers, allegrex vector FPU (VFPU), single float only support.
- TargetMachine now detects allegrex core.
- Added allegrex (Mips32r2) sext_inreg instructions.
- *Added Float Point Instructions*, handling single float only, and
aliased accesses for 32-bit FPUs.
- Some cleanup in FP instruction formats and FP register classes.
- Calling conventions improved to support mips 32-bit EABI.
- Added Asm Printer support for fp cond codes.
- Added support for sret copy to a return register.
- EABI support added into LowerCALL and FORMAL_ARGS.
- MipsFunctionInfo now keeps a virtual register per function to track the
sret on function entry until function ret.
- MipsInstrInfo FP support into methods (isMoveInstr, isLoadFromStackSlot, ...),
FP cond codes mapping and initial FP Branch Analysis.
- Two new Mips SDNode to handle fp branch and compare instructions : FPBrcond,
FPCmp
- MipsTargetLowering : handling different FP classes, Allegrex support, sret
return copy, no homing location within EABI, non 32-bit stack objects
arguments, and asm constraint for float.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53146 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/Mips/MipsSubtarget.h')
-rw-r--r-- | lib/Target/Mips/MipsSubtarget.h | 52 |
1 files changed, 47 insertions, 5 deletions
diff --git a/lib/Target/Mips/MipsSubtarget.h b/lib/Target/Mips/MipsSubtarget.h index f1068231c2..5300a81254 100644 --- a/lib/Target/Mips/MipsSubtarget.h +++ b/lib/Target/Mips/MipsSubtarget.h @@ -26,11 +26,48 @@ class MipsSubtarget : public TargetSubtarget { protected: - bool IsMipsIII; + enum MipsArchEnum { + Mips1, Mips2, Mips3, Mips4, Mips32, Mips32r2 + }; + + enum MipsABIEnum { + O32, EABI + }; + + // Mips architecture version + MipsArchEnum MipsArchVersion; + + // Mips supported ABIs + MipsABIEnum MipsABI; + + // IsLittle - The target is Little Endian bool IsLittle; + + // IsSingleFloat - The target only supports single precision float + // point operations. This enable the target to use all 32 32-bit + // float point registers instead of only using even ones. + bool IsSingleFloat; + + // IsFP64bit - The target processor has 64-bit float point registers. + bool IsFP64bit; + + // IsFP64bit - General-purpose registers are 64 bits wide + bool IsGP64bit; + + // HasAllegrexVFPU - Allegrex processor has a vector float point unit. + bool HasAllegrexVFPU; + + // IsAllegrex - The target processor is a Allegrex core. + bool IsAllegrex; + InstrItineraryData InstrItins; public: + + /// Only O32 and EABI supported right now. + bool isABI_EABI() const { return MipsABI == EABI; } + bool isABI_O32() const { return MipsABI == O32; } + /// This constructor initializes the data members to match that /// of the specified module. MipsSubtarget(const TargetMachine &TM, const Module &M, @@ -40,12 +77,17 @@ public: /// subtarget options. Definition of function is auto generated by tblgen. void ParseSubtargetFeatures(const std::string &FS, const std::string &CPU); - /// isMipsIII - Return true if the selected CPU supports MipsIII ISA - /// support. - bool isMipsIII() const { return IsMipsIII; } + bool hasMips2Ops() const { return MipsArchVersion >= Mips2; } - /// isMipsIII - Return true if the target is little endian. bool isLittle() const { return IsLittle; } + bool isFP64bit() const { return IsFP64bit; }; + bool isGP64bit() const { return IsGP64bit; }; + bool isGP32bit() const { return !IsGP64bit; }; + bool isSingleFloat() const { return IsSingleFloat; }; + bool isNotSingleFloat() const { return !IsSingleFloat; }; + bool hasAllegrexVFPU() const { return HasAllegrexVFPU; }; + bool isAllegrex() const { return IsAllegrex; }; + }; } // End llvm namespace |