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[mips] Move ABI-dependent register selections to MipsABIInfo. NFC.

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Summary:
For example, a common idiom was 'isN64 ? Mips::SP_64 : Mips::SP'. This has
been moved to MipsABIInfo and replaced with 'ABI.GetStackPtr()'.

There are others that should also be moved. This patch sticks to the ones that
are obviously non-functional. The others have minor mistakes that need fixing
at the same time, mostly involving checks for 64-bit GPR's instead of checks
for 64-bit pointers.

Reviewers: tomatabacu

Reviewed By: tomatabacu

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D8972

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235173 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Daniel Sanders
2015-04-17 09:50:21 +00:00
parent 5e708e26db
commit 01218af77f
6 changed files with 84 additions and 49 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
lib/Target/Mips/MCTargetDesc/MipsABIInfo.cpp
View File

@@ -90,3 +90,35 @@ MipsABIInfo MipsABIInfo::computeTargetABI(Triple TT, StringRef CPU,
.Case("octeon", MipsABIInfo::N64())
.Default(MipsABIInfo::Unknown());
}
unsigned MipsABIInfo::GetStackPtr() const {
return ArePtrs64bit() ? Mips::SP_64 : Mips::SP;
}
unsigned MipsABIInfo::GetFramePtr() const {
return ArePtrs64bit() ? Mips::FP_64 : Mips::FP;
}
unsigned MipsABIInfo::GetNullPtr() const {
return ArePtrs64bit() ? Mips::ZERO_64 : Mips::ZERO;
}
unsigned MipsABIInfo::GetPtrAdduOp() const {
return ArePtrs64bit() ? Mips::DADDu : Mips::ADDu;
}
unsigned MipsABIInfo::GetPtrAddiuOp() const {
return ArePtrs64bit() ? Mips::DADDiu : Mips::ADDiu;
}
unsigned MipsABIInfo::GetEhDataReg(unsigned I) const {
static const unsigned EhDataReg[] = {
Mips::A0, Mips::A1, Mips::A2, Mips::A3
};
static const unsigned EhDataReg64[] = {
Mips::A0_64, Mips::A1_64, Mips::A2_64, Mips::A3_64
};
return IsN64() ? EhDataReg64[I] : EhDataReg[I];
}