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stage2: LLVM backend: fix var args function calls

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This commit is contained in:
Andrew Kelley 2021-10-11 15:50:39 -07:00
parent 6d6cf59847
commit 5af7ae1dc4
2 changed files with 14 additions and 8 deletions
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8
src/Air.zig
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@ -264,10 +264,10 @@ pub const Inst = struct {
/// Uses the `un_op` field.
/// Triggers `resolveTypeLayout` on the return type.
ret,
/// This instruction communicates that the function's result value is inside
/// the operand, which is a pointer. If the function will pass the result by-ref,
/// the pointer operand is a `ret_ptr` instruction. Otherwise, this instruction
/// is equivalent to a `load` on the operand, followed by a `ret` on the loaded value.
/// This instruction communicates that the function's result value is pointed to by
/// the operand. If the function will pass the result by-ref, the operand is a
/// `ret_ptr` instruction. Otherwise, this instruction is equivalent to a `load`
/// on the operand, followed by a `ret` on the loaded value.
/// Result type is always noreturn; no instructions in a block follow this one.
/// Uses the `un_op` field.
/// Triggers `resolveTypeLayout` on the return type.

14
src/codegen/llvm.zig
View File

@ -1490,11 +1490,17 @@ pub const FuncGen = struct {
break :blk ret_ptr;
};
for (args) |arg, i| {
const param_ty = fn_info.param_types[i];
if (!param_ty.hasCodeGenBits()) continue;
if (fn_info.is_var_args) {
for (args) |arg| {
try llvm_args.append(try self.resolveInst(arg));
}
} else {
for (args) |arg, i| {
const param_ty = fn_info.param_types[i];
if (!param_ty.hasCodeGenBits()) continue;
try llvm_args.append(try self.resolveInst(arg));
try llvm_args.append(try self.resolveInst(arg));
}
}
const call = self.builder.buildCall(