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Pull in r202059 from upstream clang trunk (by Roman Divacky):

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Implement getDwarfEHStackPointer() and initDwarfEHRegSizeTable() for sparcv9.

Enables the libgcc-specific undocumented __builtin_dwarf_sp_column() and
__builtin_init_dwarf_reg_size_table() builtins to be compiled for
sparc64.
This commit is contained in:
Dimitry Andric 2014-02-24 21:48:03 +00:00
parent 892620150f
commit 89c1656950
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/projects/clang-sparc64/; revision=262460
1 changed files with 41 additions and 0 deletions
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41
contrib/llvm/tools/clang/lib/CodeGen/TargetInfo.cpp
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@ -5435,9 +5435,50 @@ class SparcV9TargetCodeGenInfo : public TargetCodeGenInfo {
public:
SparcV9TargetCodeGenInfo(CodeGenTypes &CGT)
: TargetCodeGenInfo(new SparcV9ABIInfo(CGT)) {}
int getDwarfEHStackPointer(CodeGen::CodeGenModule &M) const {
return 14;
}
bool initDwarfEHRegSizeTable(CodeGen::CodeGenFunction &CGF,
llvm::Value *Address) const;
};
} // end anonymous namespace
bool
SparcV9TargetCodeGenInfo::initDwarfEHRegSizeTable(CodeGen::CodeGenFunction &CGF,
llvm::Value *Address) const {
// This is calculated from the LLVM and GCC tables and verified
// against gcc output. AFAIK all ABIs use the same encoding.
CodeGen::CGBuilderTy &Builder = CGF.Builder;
llvm::IntegerType *i8 = CGF.Int8Ty;
llvm::Value *Four8 = llvm::ConstantInt::get(i8, 4);
llvm::Value *Eight8 = llvm::ConstantInt::get(i8, 8);
// 0-31: the 8-byte general-purpose registers
AssignToArrayRange(Builder, Address, Eight8, 0, 31);
// 32-63: f0-31, the 4-byte floating-point registers
AssignToArrayRange(Builder, Address, Four8, 32, 63);
// Y = 64
// PSR = 65
// WIM = 66
// TBR = 67
// PC = 68
// NPC = 69
// FSR = 70
// CSR = 71
AssignToArrayRange(Builder, Address, Eight8, 64, 71);
// 72-87: d0-15, the 8-byte floating-point registers
AssignToArrayRange(Builder, Address, Eight8, 72, 87);
return false;
}
//===----------------------------------------------------------------------===//
// Xcore ABI Implementation