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x86_64: fix signed not of more than 64 bits

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This commit is contained in:
Jacob Young 2023-11-08 08:49:03 -05:00
parent 6c15c34421
commit e387d30b26
1 changed files with 6 additions and 3 deletions
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9
src/arch/x86_64/CodeGen.zig
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@ -7433,16 +7433,20 @@ fn genUnOp(self: *Self, maybe_inst: ?Air.Inst.Index, tag: Air.Inst.Tag, src_air:
};
defer if (dst_lock) |lock| self.register_manager.unlockReg(lock);
const abi_size: u16 = @intCast(src_ty.abiSize(mod));
switch (tag) {
.not => {
const limb_abi_size: u16 = @intCast(@min(src_ty.abiSize(mod), 8));
const limb_abi_size: u16 = @min(abi_size, 8);
const int_info = if (src_ty.ip_index == .bool_type)
std.builtin.Type.Int{ .signedness = .unsigned, .bits = 1 }
else
src_ty.intInfo(mod);
var byte_off: i32 = 0;
while (byte_off * 8 < int_info.bits) : (byte_off += limb_abi_size) {
const limb_bits: u16 = @intCast(@min(int_info.bits - byte_off * 8, limb_abi_size * 8));
const limb_bits: u16 = @intCast(@min(switch (int_info.signedness) {
.signed => abi_size * 8,
.unsigned => int_info.bits,
} - byte_off * 8, limb_abi_size * 8));
const limb_ty = try mod.intType(int_info.signedness, limb_bits);
const limb_mcv = switch (byte_off) {
0 => dst_mcv,
@ -7457,7 +7461,6 @@ fn genUnOp(self: *Self, maybe_inst: ?Air.Inst.Index, tag: Air.Inst.Tag, src_air:
},
.neg => {
try self.genUnOpMir(.{ ._, .neg }, src_ty, dst_mcv);
const abi_size: u16 = @intCast(src_ty.abiSize(mod));
const bit_size = src_ty.intInfo(mod).bits;
if (abi_size * 8 > bit_size) {
if (dst_mcv.isRegister()) {