<html>
<head>
<base href="https://bugs.llvm.org/">
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - IR dump prints win64cc but llc does not recognize it"
href="https://bugs.llvm.org/show_bug.cgi?id=43207">43207</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>IR dump prints win64cc but llc does not recognize it
</td>
</tr>
<tr>
<th>Product</th>
<td>tools
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Windows XP
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>llc
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>LChrisman@Lumina.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr></table>
<p>
<div>
<pre>You can produce an IR dump with a win64cc calling convention, like this one:
%MyStruct = type { i16, i64 }
define win64cc %MyStruct @ret_struct() {
begin:
ret %MyStruct { i16 13, i64 23 }
}
But when you compile it with llc, it gives an error that it doesn't recognize
it. If it can print it, it seems like it should parse it.
Steps:
1. Same the above to win64cctest.ll
2. On command line, run: llc win64cctest.ll -o -
{ Actual: error: expected type. Points to win64cc }
{ Expected: Would succeed }
---
Printing side:
ThreadSafeModule MakeM()
{
auto pCtx = make_unique<LLVMContext>();
auto& ctx = *pCtx;
auto pM = make_unique<Module>("My_module",ctx);
auto& M = *pM;
auto myStruct = StructType::create(ctx,
{ Type::getInt16Ty(ctx),
Type::getInt64Ty(ctx)
},"MyStruct");
FunctionType* proto = FunctionType::get(myStruct,false);
Function* fn =
Function::Create(proto,GlobalValue::LinkageTypes::CommonLinkage,"ret_struct",M);
fn->setCallingConv(CallingConv::Win64);
BasicBlock* BB = BasicBlock::Create(ctx,"begin",fn);
IRBuilder<> builder(BB);
//Value* ms = builder.CreateAlloca(myStruct,nullptr,"ms");
auto ms = ConstantStruct::get(myStruct,
{ ConstantInt::get(ctx,APInt(16,13,true)),
ConstantInt::get(ctx,APInt(64,23uLL))
} );
builder.CreateRet(ms);
cout << "The IR is:\n";
outs() << M;
cout << endl;
return ThreadSafeModule(std::move(pM),std::move(pCtx));
}
int main()
{
InitializeNativeTarget();
InitializeNativeTargetAsmPrinter();
auto M = MakeM();
...
}
--------------
Additional comments:
* Using most recent SVN branch, reproduced both on Win 7 and Win 10. (Your bug
base OS pulldown doesn't have anything after Windows XP)</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>