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Another shot at fixing the issues with (constant) struct literals and their addresses. See DMD2682, #218, #324.
The idea is to separate the notion of const from 'this variable can always be
replaced with its initializer' in the frontend. To do that, I introduced
Declaration::isSameAsInitializer, which is overridden in VarDeclaration to
return false for constants that have a struct literal initializer.
So
{{{
const S s = S(5);
void foo() { auto ps = &s; }
// is no longer replaced by
void foo() { auto ps = &(S(5)); }
}}}
To make taking the address of a struct constant with a struct-initializer
outside of function scope possible, I made sure that AddrExp::optimize doesn't
try to run the argument's optimization with WANTinterpret - that'd again
replace the constant with a struct literal temporary.
author | Christian Kamm <kamm incasoftware de> |
---|---|
date | Sun, 14 Jun 2009 19:49:58 +0200 |
parents | 8c73ff5f69e0 |
children | 8ca25bd765a3 |
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#ifndef GEN_LLVM_H #define GEN_LLVM_H #include "llvm/Type.h" #include "llvm/DerivedTypes.h" #include "llvm/Constants.h" #include "llvm/IntrinsicInst.h" #include "llvm/CallingConv.h" #include "llvm/GlobalVariable.h" #include "llvm/Function.h" #include "llvm/Module.h" #include "llvm/Value.h" #include "llvm/Attributes.h" #include "llvm/Target/TargetData.h" #include "llvm/Analysis/DebugInfo.h" #include "llvm/Support/CallSite.h" #include "llvm/Support/IRBuilder.h" using llvm::IRBuilder; // for WriteTypeSymbolic #include "llvm/Assembly/Writer.h" #define GET_INTRINSIC_DECL(_X) (llvm::Intrinsic::getDeclaration(gIR->module, llvm::Intrinsic:: _X )) // shortcuts for the common llvm types #define LLType llvm::Type #define LLFunctionType llvm::FunctionType #define LLPointerType llvm::PointerType #define LLStructType llvm::StructType #define LLArrayType llvm::ArrayType #define LLIntegerType llvm::IntegerType #define LLOpaqueType llvm::OpaqueType #define LLValue llvm::Value #define LLGlobalValue llvm::GlobalValue #define LLGlobalVariable llvm::GlobalVariable #define LLFunction llvm::Function #define LLConstant llvm::Constant #define LLConstantStruct llvm::ConstantStruct #define LLConstantArray llvm::ConstantArray #define LLConstantInt llvm::ConstantInt #define LLConstantFP llvm::ConstantFP #define LLPATypeHolder llvm::PATypeHolder #define LLCallSite llvm::CallSite #define LLSmallVector llvm::SmallVector using llvm::APFloat; using llvm::APInt; #endif // GEN_LLVM_H