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Fix #113 - promotion of small static array arguments to registers.

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This commit is contained in:
David Nadlinger
2012-06-06 22:55:59 +02:00
parent ba9fb721ed
commit 62bfda0259
3 changed files with 33 additions and 49 deletions
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gen/abi-x86-64.cpp
+6 -20
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@@ -348,7 +348,7 @@ struct RegCount {
struct X86_64TargetABI : TargetABI {
X86_64_C_struct_rewrite struct_rewrite;
X87_complex_swap swapComplex;
X86_struct_to_register structToReg;
CompositeToInt compositeToInt;
void newFunctionType(TypeFunction* tf) {
funcTypeStack.push_back(FuncTypeData(tf->linkage));
@@ -587,25 +587,11 @@ void X86_64TargetABI::rewriteFunctionType(TypeFunction* tf) {
else if ((ty->ty == Tstruct || ty->ty == Tsarray) &&
(sz == 1 || sz == 2 || sz == 4 || sz == 8))
{
if (ty->ty == Tstruct)
{
Logger::println("Putting struct in register");
arg.rewrite = &structToReg;
arg.ltype = structToReg.type(arg.type, arg.ltype);
arg.byref = false;
// erase previous attributes
arg.attrs = 0;
}
else
{
Logger::println("Putting static array in register");
// need to make sure type is not pointer
arg.ltype = DtoType(arg.type);
arg.byref = false;
// erase previous attributes
arg.attrs = 0;
}
arg.attrs |= llvm::Attribute::InReg;
Logger::println("Putting struct/sarray in register");
arg.rewrite = &compositeToInt;
arg.ltype = compositeToInt.type(arg.type, arg.ltype);
arg.byref = false;
arg.attrs = llvm::Attribute::InReg;
--regcount;
}
}