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Move calling convention conversion into TargetABI.

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The code is tightly coupled to TargetABI (the transformations
there only make sense knowing that the right CC is selected).
This commit is contained in:
David Nadlinger
2013-02-18 10:02:32 +01:00
parent 1a132d5d41
commit 3392f70a4e
10 changed files with 109 additions and 43 deletions
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38
gen/tocall.cpp
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@@ -54,42 +54,6 @@ TypeFunction* DtoTypeFunction(DValue* fnval)
//////////////////////////////////////////////////////////////////////////////////////////
llvm::CallingConv::ID DtoCallingConv(Loc loc, LINK l)
{
llvm::Triple::ArchType const arch = global.params.targetTriple.getArch();
if (l == LINKc || l == LINKcpp || l == LINKintrinsic)
return llvm::CallingConv::C;
else if (l == LINKd || l == LINKdefault)
{
//TODO: StdCall is not a good base on Windows due to extra name mangling
// applied there
if (arch == llvm::Triple::x86 || arch == llvm::Triple::x86_64)
{
return global.params.targetTriple.isOSWindows() ?
llvm::CallingConv::C : llvm::CallingConv::X86_StdCall;
}
else
return llvm::CallingConv::Fast;
}
// on the other hand, here, it's exactly what we want!!! TODO: right?
// On Windows 64bit, there is only one calling convention!
else if (l == LINKwindows)
{
return (arch == llvm::Triple::x86_64) ?
llvm::CallingConv::C : llvm::CallingConv::X86_StdCall;
}
else if (l == LINKpascal)
return llvm::CallingConv::X86_StdCall;
else
{
error(loc, "unsupported calling convention");
fatal();
}
}
//////////////////////////////////////////////////////////////////////////////////////////
DValue* DtoVaArg(Loc& loc, Type* type, Expression* valistArg)
{
DValue* expelem = valistArg->toElem(gIR);
@@ -377,7 +341,7 @@ DValue* DtoCallFunction(Loc& loc, Type* resulttype, DValue* fnval, Expressions*
bool nestedcall = tf->fty.arg_nest;
bool dvarargs = (tf->linkage == LINKd && tf->varargs == 1);
llvm::CallingConv::ID callconv = DtoCallingConv(loc, tf->linkage);
llvm::CallingConv::ID callconv = gABI->callingConv(tf->linkage);
// get callee llvm value
LLValue* callable = DtoCallableValue(fnval);