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stage2: integer-backed packed structs

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This implements #10113 for the self-hosted compiler only. It removes the
ability to override alignment of packed struct fields, and removes the
ability to put pointers and arrays inside packed structs.

After this commit, nearly all the behavior tests pass for the stage2 llvm
backend that involve packed structs.

I didn't implement the compile errors or compile error tests yet. I'm
waiting until we have stage2 building itself and then I want to rework
the compile error test harness with inspiration from Vexu's arocc test
harness. At that point it should be a much nicer dev experience to work
on compile errors.
This commit is contained in:
Andrew Kelley
2022-02-23 23:27:49 -07:00
parent 65c0475970
commit 6249a24e81
13 changed files with 514 additions and 644 deletions
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10
test/behavior/array.zig
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@@ -473,8 +473,8 @@ test "type deduction for array subscript expression" {
}
test "sentinel element count towards the ABI size calculation" {
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_llvm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
@@ -482,7 +482,7 @@ test "sentinel element count towards the ABI size calculation" {
const S = struct {
fn doTheTest() !void {
const T = packed struct {
const T = extern struct {
fill_pre: u8 = 0x55,
data: [0:0]u8 = undefined,
fill_post: u8 = 0xAA,
@@ -500,7 +500,7 @@ test "sentinel element count towards the ABI size calculation" {
}
test "zero-sized array with recursive type definition" {
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_llvm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
@@ -525,7 +525,7 @@ test "zero-sized array with recursive type definition" {
}
test "type coercion of anon struct literal to array" {
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
@@ -561,8 +561,8 @@ test "type coercion of anon struct literal to array" {
}
test "type coercion of pointer to anon struct literal to pointer to array" {
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_llvm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO