D/ldc
1
0
Fork 0
mirror of https://github.com/xomboverlord/ldc.git synced 2026-01-27 01:53:13 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity

Convert struct arg to integer when passing inreg to make sure LLVM doesn't

Browse Source 
ignore the attribute!
This commit is contained in:
Christian Kamm
2009-02-04 18:39:33 +01:00
parent c1aeab8c07
commit c3cdcab8d2
4 changed files with 17 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
gen/functions.cpp
View File

@@ -220,15 +220,15 @@ const llvm::FunctionType* DtoFunctionType(Type* type, const LLType* thistype, co
arg->llvmAttrs |= llvm::Attribute::InReg;
assert((f->thisAttrs & llvm::Attribute::InReg) == 0 && "can't have two inreg args!");
// structs need to go from {...}* byval to {...} inreg
// structs need to go from {...}* byval to i8/i16/i32 inreg
if ((arg->storageClass & STCin) && t->ty == Tstruct)
{
int n_param = f->reverseParams ? f->firstRealArg + n - 1 - n_inreg : f->firstRealArg + n_inreg;
assert(isaPointer(paramvec[n_param]) && (arg->llvmAttrs & llvm::Attribute::ByVal)
&& "struct parameter expected to be {...}* byval before inreg is applied");
paramvec[n_param] = paramvec[n_param]->getContainedType(0);
f->structInregArg = paramvec[n_param]->getContainedType(0);
paramvec[n_param] = LLIntegerType::get(8*t->size());
arg->llvmAttrs &= ~llvm::Attribute::ByVal;
f->structInregArg = true;
}
}
}
@@ -759,11 +759,14 @@ void DtoDefineFunction(FuncDeclaration* fd)
if (f->structInregArg && i == (f->reverseParams ? n - 1 : 0))
{
int n_param = f->reverseParams ? f->firstRealArg + n - 1 - i : f->firstRealArg + i;
assert(!f->usesNest && !f->usesThis && isaStruct(functype->getParamType(n_param))
const LLType* paramty = functype->getParamType(n_param);
assert(!f->usesNest && !f->usesThis &&
llvm::isa<LLIntegerType>(paramty) && isaStruct(f->structInregArg)
&& "Preconditions for inreg struct arg not met!");
LLValue* mem = DtoAlloca(functype->getParamType(n_param), "inregstructarg");
DtoStore(irloc->value, mem);
LLValue* mem = DtoAlloca(f->structInregArg, "inregstructarg");
DtoStore(irloc->value, DtoBitCast(mem, getPtrToType(paramty)));
irloc->value = mem;
}