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view ir/irforw.h @ 1047:6bb04dbee21f
Some calling convention work for x86-64:
- Implement x86-64 extern(C), hopefully correctly.
- Tried to be a bit smarter about extern(D) while I was there.
Interestingly, this code seems to be generating more efficient code than
gcc and llvm-gcc in some edge cases, like returning a `{ [7 x i8] }` loaded from
a stack slot from an extern(C) function. (gcc generates 7 1-byte loads, while
this code generates a 4-byte, a 2-byte and a 1-byte load)
I also added some changes to make sure structs being returned from functions or
passed in as parameters are stored in memory where the rest of the backend seems
to expect them to be. These should be removed when support for first-class
aggregates improves.
author | Frits van Bommel <fvbommel wxs.nl> |
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date | Fri, 06 Mar 2009 16:00:47 +0100 |
parents | eef8ac26c66c |
children |
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#ifndef LDC_IR_IRFORW_H #define LDC_IR_IRFORW_H // dmd forward declarations struct Module; struct Dsymbol; struct Declaration; struct VarDeclaration; struct FuncDeclaration; struct AggregateDeclaration; struct StructDeclaration; struct ClassDeclaration; struct InterfaceDeclaration; struct Expression; struct BaseClass; struct Array; struct Argument; struct Type; struct TypeStruct; struct TypeClass; struct TypeEnum; struct TypeArray; struct TypeFunction; // llvm forward declarations namespace llvm { class Value; class GlobalValue; class GlobalVariable; class Function; class Constant; class ConstantStruct; class ConstantArray; class TargetData; class Type; class StructType; class ArrayType; class PointerType; class BasicBlock; class Instruction; } #endif