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llvm: do not pad vector element debug types

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This commit is contained in:
Veikka Tuominen 2022-12-30 20:54:24 +02:00
parent f874b5e1e0
commit bd711dfd25
1 changed files with 22 additions and 1 deletions
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23
src/codegen/llvm.zig
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@ -1725,10 +1725,31 @@ pub const Object = struct {
return array_di_ty;
},
.Vector => {
const elem_ty = ty.elemType2();
// Vector elements cannot be padded since that would make
// @bitSizOf(elem) * len > @bitSizOf(vec).
// Neither gdb nor lldb seem to be able to display non-byte sized
// vectors properly.
const elem_di_type = switch (elem_ty.zigTypeTag()) {
.Int => blk: {
const info = elem_ty.intInfo(target);
assert(info.bits != 0);
const name = try ty.nameAlloc(gpa, o.module);
defer gpa.free(name);
const dwarf_encoding: c_uint = switch (info.signedness) {
.signed => DW.ATE.signed,
.unsigned => DW.ATE.unsigned,
};
break :blk dib.createBasicType(name, info.bits, dwarf_encoding);
},
.Bool => dib.createBasicType("bool", 1, DW.ATE.boolean),
else => try o.lowerDebugType(ty.childType(), .full),
};
const vector_di_ty = dib.createVectorType(
ty.abiSize(target) * 8,
ty.abiAlignment(target) * 8,
try o.lowerDebugType(ty.childType(), .full),
elem_di_type,
ty.vectorLen(),
);
// The recursive call to `lowerDebugType` means we can't use `gop` anymore.