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trying to be even smarter

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This commit is contained in:
Folkert 2021-08-31 22:40:13 +02:00
parent a810c2c27b
commit 4731cbd391
1 changed files with 4 additions and 19 deletions
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23
compiler/builtins/bitcode/src/utils.zig
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@ -175,7 +175,7 @@ pub fn allocateWithRefcount(
} }
var as_u8_array = @ptrCast([*]u8, new_bytes); var as_u8_array = @ptrCast([*]u8, new_bytes);
const first_slot = as_u8_array + 2 * @sizeOf(usize); const first_slot = as_u8_array + std.math.max(alignment, @sizeOf(usize)) - @sizeOf(usize);
return first_slot; return first_slot;
}, },
@ -193,7 +193,7 @@ pub fn allocateWithRefcount(
} }
var as_u8_array = @ptrCast([*]u8, new_bytes); var as_u8_array = @ptrCast([*]u8, new_bytes);
const first_slot = as_u8_array + alignment; const first_slot = as_u8_array + std.math.max(alignment, @sizeOf(usize)) - @sizeOf(usize);
return first_slot; return first_slot;
}, },
@ -211,27 +211,12 @@ pub fn allocateWithRefcount(
} }
var as_u8_array = @ptrCast([*]u8, new_bytes); var as_u8_array = @ptrCast([*]u8, new_bytes);
const first_slot = as_u8_array + alignment; const first_slot = as_u8_array + std.math.max(alignment, @sizeOf(usize)) - @sizeOf(usize);
return first_slot; return first_slot;
}, },
else => { else => {
const length = @sizeOf(usize) + data_bytes; @panic("allocateWithRefcount with invalid alignment");
var raw = alloc(length, alignment);
var new_bytes: [*]align(8) u8 = @alignCast(8, raw);
var as_isize_array = @ptrCast([*]isize, new_bytes);
if (result_in_place) {
as_isize_array[0] = @intCast(isize, number_of_slots);
} else {
as_isize_array[0] = REFCOUNT_ONE_ISIZE;
}
var as_u8_array = @ptrCast([*]u8, new_bytes);
const first_slot = as_u8_array + @sizeOf(usize);
return first_slot;
}, },
} }
} }