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stage2: add debug info for locals in the LLVM backend

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Adds 2 new AIR instructions:
 * dbg_var_ptr
 * dbg_var_val

Sema no longer emits dbg_stmt AIR instructions when strip=true.

LLVM backend: fixed lowerPtrToVoid when calling ptrAlignment on
the element type is problematic.

LLVM backend: fixed alloca instructions improperly getting debug
location annotated, causing chaotic debug info behavior.

zig_llvm.cpp: fixed incorrect bindings for a function that should use
unsigned integers for line and column.

A bunch of C test cases regressed because the new dbg_var AIR
instructions caused their operands to be alive, exposing latent bugs.
Mostly it's just a problem that the C backend lowers mutable
and const slices to the same C type, so we need to represent that in the
C backend instead of printing two duplicate typedefs.
This commit is contained in:
Andrew Kelley 2022-03-12 19:55:48 -07:00
parent 7ec2261dbf
commit 0bc9635490
29 changed files with 338 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
src/Air.zig
View File

@ -327,6 +327,15 @@ pub const Inst = struct {
/// Result type is always void.
/// Uses the `dbg_stmt` field.
dbg_stmt,
/// Marks the beginning of a local variable. The operand is a pointer pointing
/// to the storage for the variable. The local may be a const or a var.
/// Result type is always void.
/// Uses `pl_op`. The payload index is the variable name. It points to the extra
/// array, reinterpreting the bytes there as a null-terminated string.
dbg_var_ptr,
/// Same as `dbg_var_ptr` except the local is a const, not a var, and the
/// operand is the local's value.
dbg_var_val,
/// ?T => bool
/// Result type is always bool.
/// Uses the `un_op` field.
@ -962,6 +971,8 @@ pub fn typeOfIndex(air: Air, inst: Air.Inst.Index) Type {
.breakpoint,
.dbg_stmt,
.dbg_var_ptr,
.dbg_var_val,
.store,
.fence,
.atomic_store_unordered,
@ -972,13 +983,13 @@ pub fn typeOfIndex(air: Air, inst: Air.Inst.Index) Type {
.memcpy,
.set_union_tag,
.prefetch,
=> return Type.initTag(.void),
=> return Type.void,
.ptrtoint,
.slice_len,
.ret_addr,
.frame_addr,
=> return Type.initTag(.usize),
=> return Type.usize,
.wasm_memory_grow => return Type.i32,
.wasm_memory_size => return Type.u32,
@ -1089,3 +1100,12 @@ pub fn value(air: Air, inst: Air.Inst.Ref) ?Value {
else => return air.typeOfIndex(inst_index).onePossibleValue(),
}
}
pub fn nullTerminatedString(air: Air, index: usize) [:0]const u8 {
const bytes = std.mem.sliceAsBytes(air.extra[index..]);
var end: usize = 0;
while (bytes[end] != 0) {
end += 1;
}
return bytes[0..end :0];
}

40
src/AstGen.zig
View File

@ -2389,6 +2389,8 @@ fn unusedResultExpr(gz: *GenZir, scope: *Scope, statement: Ast.Node.Index) Inner
.breakpoint,
.fence,
.dbg_stmt,
.dbg_var_ptr,
.dbg_var_val,
.ensure_result_used,
.ensure_result_non_error,
.@"export",
@ -2666,6 +2668,15 @@ fn varDecl(
} else .none;
const init_inst = try reachableExpr(gz, scope, result_loc, var_decl.ast.init_node, node);
if (!gz.force_comptime) {
_ = try gz.add(.{ .tag = .dbg_var_val, .data = .{
.str_op = .{
.str = ident_name,
.operand = init_inst,
},
} });
}
const sub_scope = try block_arena.create(Scope.LocalVal);
sub_scope.* = .{
.parent = scope,
@ -2751,6 +2762,15 @@ fn varDecl(
}
gz.instructions.items.len = dst;
if (!gz.force_comptime) {
_ = try gz.add(.{ .tag = .dbg_var_val, .data = .{
.str_op = .{
.str = ident_name,
.operand = init_inst,
},
} });
}
const sub_scope = try block_arena.create(Scope.LocalVal);
sub_scope.* = .{
.parent = scope,
@ -2785,6 +2805,16 @@ fn varDecl(
_ = try gz.addUnNode(.resolve_inferred_alloc, resolve_inferred_alloc, node);
}
const const_ptr = try gz.addUnNode(.make_ptr_const, init_scope.rl_ptr, node);
if (!gz.force_comptime) {
_ = try gz.add(.{ .tag = .dbg_var_ptr, .data = .{
.str_op = .{
.str = ident_name,
.operand = const_ptr,
},
} });
}
const sub_scope = try block_arena.create(Scope.LocalPtr);
sub_scope.* = .{
.parent = scope,
@ -2848,6 +2878,16 @@ fn varDecl(
if (resolve_inferred_alloc != .none) {
_ = try gz.addUnNode(.resolve_inferred_alloc, resolve_inferred_alloc, node);
}
if (!gz.force_comptime) {
_ = try gz.add(.{ .tag = .dbg_var_ptr, .data = .{
.str_op = .{
.str = ident_name,
.operand = var_data.alloc,
},
} });
}
const sub_scope = try block_arena.create(Scope.LocalPtr);
sub_scope.* = .{
.parent = scope,

7
src/Liveness.zig
View File

@ -394,6 +394,13 @@ fn analyzeInst(
return trackOperands(a, new_set, inst, main_tomb, .{ operand, .none, .none });
},
.dbg_var_ptr,
.dbg_var_val,
=> {
const operand = inst_datas[inst].pl_op.operand;
return trackOperands(a, new_set, inst, main_tomb, .{ operand, .none, .none });
},
.prefetch => {
const prefetch = inst_datas[inst].prefetch;
return trackOperands(a, new_set, inst, main_tomb, .{ prefetch.ptr, .none, .none });

47
src/Sema.zig
View File

@ -872,6 +872,16 @@ fn analyzeBodyInner(
i += 1;
continue;
},
.dbg_var_ptr => {
try sema.zirDbgVar(block, inst, .dbg_var_ptr);
i += 1;
continue;
},
.dbg_var_val => {
try sema.zirDbgVar(block, inst, .dbg_var_val);
i += 1;
continue;
},
.ensure_err_payload_void => {
try sema.zirEnsureErrPayloadVoid(block, inst);
i += 1;
@ -4158,14 +4168,11 @@ fn zirBreak(sema: *Sema, start_block: *Block, inst: Zir.Inst.Index) CompileError
}
fn zirDbgStmt(sema: *Sema, block: *Block, inst: Zir.Inst.Index) CompileError!void {
const tracy = trace(@src());
defer tracy.end();
// We do not set sema.src here because dbg_stmt instructions are only emitted for
// ZIR code that possibly will need to generate runtime code. So error messages
// and other source locations must not rely on sema.src being set from dbg_stmt
// instructions.
if (block.is_comptime) return;
if (block.is_comptime or sema.mod.comp.bin_file.options.strip) return;
const inst_data = sema.code.instructions.items(.data)[inst].dbg_stmt;
_ = try block.addInst(.{
@ -4177,6 +4184,38 @@ fn zirDbgStmt(sema: *Sema, block: *Block, inst: Zir.Inst.Index) CompileError!voi
});
}
fn zirDbgVar(
sema: *Sema,
block: *Block,
inst: Zir.Inst.Index,
air_tag: Air.Inst.Tag,
) CompileError!void {
if (block.is_comptime or sema.mod.comp.bin_file.options.strip) return;
const str_op = sema.code.instructions.items(.data)[inst].str_op;
const operand = sema.resolveInst(str_op.operand);
const operand_ty = sema.typeOf(operand);
if (!(try sema.typeHasRuntimeBits(block, sema.src, operand_ty))) return;
const name = str_op.getStr(sema.code);
// Add the name to the AIR.
const name_extra_index = @intCast(u32, sema.air_extra.items.len);
const elements_used = name.len / 4 + 1;
try sema.air_extra.ensureUnusedCapacity(sema.gpa, elements_used);
const buffer = mem.sliceAsBytes(sema.air_extra.unusedCapacitySlice());
mem.copy(u8, buffer, name);
buffer[name.len] = 0;
sema.air_extra.items.len += elements_used;
_ = try block.addInst(.{
.tag = air_tag,
.data = .{ .pl_op = .{
.payload = name_extra_index,
.operand = operand,
} },
});
}
fn zirDeclRef(sema: *Sema, block: *Block, inst: Zir.Inst.Index) CompileError!Air.Inst.Ref {
const inst_data = sema.code.instructions.items(.data)[inst].str_tok;
const src = inst_data.src();

22
src/Zir.zig
View File

@ -322,6 +322,14 @@ pub const Inst = struct {
/// Uses the `dbg_stmt` union field. The line and column are offset
/// from the parent declaration.
dbg_stmt,
/// Marks a variable declaration. Used for debug info.
/// Uses the `str_op` union field. The string is the local variable name,
/// and the operand is the pointer to the variable's location. The local
/// may be a const or a var.
dbg_var_ptr,
/// Same as `dbg_var_ptr` but the local is always a const and the operand
/// is the local's value.
dbg_var_val,
/// Uses a name to identify a Decl and takes a pointer to it.
/// Uses the `str_tok` union field.
decl_ref,
@ -1032,6 +1040,8 @@ pub const Inst = struct {
.error_set_decl_anon,
.error_set_decl_func,
.dbg_stmt,
.dbg_var_ptr,
.dbg_var_val,
.decl_ref,
.decl_val,
.load,
@ -1297,6 +1307,8 @@ pub const Inst = struct {
.error_set_decl_anon = .pl_node,
.error_set_decl_func = .pl_node,
.dbg_stmt = .dbg_stmt,
.dbg_var_ptr = .str_op,
.dbg_var_val = .str_op,
.decl_ref = .str_tok,
.decl_val = .str_tok,
.load = .un_node,
@ -2232,6 +2244,15 @@ pub const Inst = struct {
return .{ .node_offset = self.src_node };
}
},
str_op: struct {
/// Offset into `string_bytes`. Null-terminated.
str: u32,
operand: Ref,
pub fn getStr(self: @This(), zir: Zir) [:0]const u8 {
return zir.nullTerminatedString(self.str);
}
},
// Make sure we don't accidentally add a field to make this union
// bigger than expected. Note that in Debug builds, Zig is allowed
@ -2268,6 +2289,7 @@ pub const Inst = struct {
switch_capture,
dbg_stmt,
inst_node,
str_op,
};
};

13
src/arch/aarch64/CodeGen.zig
View File

@ -643,6 +643,10 @@ fn genBody(self: *Self, body: []const Air.Inst.Index) InnerError!void {
.prefetch => try self.airPrefetch(inst),
.mul_add => try self.airMulAdd(inst),
.dbg_var_ptr,
.dbg_var_val,
=> try self.airDbgVar(inst),
.call => try self.airCall(inst, .auto),
.call_always_tail => try self.airCall(inst, .always_tail),
.call_never_tail => try self.airCall(inst, .never_tail),
@ -2650,6 +2654,15 @@ fn airDbgStmt(self: *Self, inst: Air.Inst.Index) !void {
return self.finishAirBookkeeping();
}
fn airDbgVar(self: *Self, inst: Air.Inst.Index) !void {
const pl_op = self.air.instructions.items(.data)[inst].pl_op;
const name = self.air.nullTerminatedString(pl_op.payload);
const operand = pl_op.operand;
// TODO emit debug info for this variable
_ = name;
return self.finishAir(inst, .dead, .{ operand, .none, .none });
}
fn airCondBr(self: *Self, inst: Air.Inst.Index) !void {
const pl_op = self.air.instructions.items(.data)[inst].pl_op;
const cond = try self.resolveInst(pl_op.operand);

13
src/arch/arm/CodeGen.zig
View File

@ -642,6 +642,10 @@ fn genBody(self: *Self, body: []const Air.Inst.Index) InnerError!void {
.prefetch => try self.airPrefetch(inst),
.mul_add => try self.airMulAdd(inst),
.dbg_var_ptr,
.dbg_var_val,
=> try self.airDbgVar(inst),
.call => try self.airCall(inst, .auto),
.call_always_tail => try self.airCall(inst, .always_tail),
.call_never_tail => try self.airCall(inst, .never_tail),
@ -2831,6 +2835,15 @@ fn airDbgStmt(self: *Self, inst: Air.Inst.Index) !void {
return self.finishAirBookkeeping();
}
fn airDbgVar(self: *Self, inst: Air.Inst.Index) !void {
const pl_op = self.air.instructions.items(.data)[inst].pl_op;
const name = self.air.nullTerminatedString(pl_op.payload);
const operand = pl_op.operand;
// TODO emit debug info for this variable
_ = name;
return self.finishAir(inst, .dead, .{ operand, .none, .none });
}
fn airCondBr(self: *Self, inst: Air.Inst.Index) !void {
const pl_op = self.air.instructions.items(.data)[inst].pl_op;
const cond = try self.resolveInst(pl_op.operand);

13
src/arch/riscv64/CodeGen.zig
View File

@ -609,6 +609,10 @@ fn genBody(self: *Self, body: []const Air.Inst.Index) InnerError!void {
.prefetch => try self.airPrefetch(inst),
.mul_add => try self.airMulAdd(inst),
.dbg_var_ptr,
.dbg_var_val,
=> try self.airDbgVar(inst),
.call => try self.airCall(inst, .auto),
.call_always_tail => try self.airCall(inst, .always_tail),
.call_never_tail => try self.airCall(inst, .never_tail),
@ -1636,6 +1640,15 @@ fn airDbgStmt(self: *Self, inst: Air.Inst.Index) !void {
return self.finishAirBookkeeping();
}
fn airDbgVar(self: *Self, inst: Air.Inst.Index) !void {
const pl_op = self.air.instructions.items(.data)[inst].pl_op;
const name = self.air.nullTerminatedString(pl_op.payload);
const operand = pl_op.operand;
// TODO emit debug info for this variable
_ = name;
return self.finishAir(inst, .dead, .{ operand, .none, .none });
}
fn airCondBr(self: *Self, inst: Air.Inst.Index) !void {
_ = inst;

7
src/arch/wasm/CodeGen.zig
View File

@ -1219,13 +1219,18 @@ fn genInst(self: *Self, inst: Air.Inst.Index) !WValue {
.br => self.airBr(inst),
.bool_to_int => self.airBoolToInt(inst),
.cond_br => self.airCondBr(inst),
.dbg_stmt => WValue.none,
.intcast => self.airIntcast(inst),
.fptrunc => self.airFptrunc(inst),
.fpext => self.airFpext(inst),
.float_to_int => self.airFloatToInt(inst),
.get_union_tag => self.airGetUnionTag(inst),
// TODO
.dbg_stmt,
.dbg_var_ptr,
.dbg_var_val,
=> WValue.none,
.call => self.airCall(inst, .auto),
.call_always_tail => self.airCall(inst, .always_tail),
.call_never_tail => self.airCall(inst, .never_tail),

13
src/arch/x86_64/CodeGen.zig
View File

@ -726,6 +726,10 @@ fn genBody(self: *Self, body: []const Air.Inst.Index) InnerError!void {
.prefetch => try self.airPrefetch(inst),
.mul_add => try self.airMulAdd(inst),
.dbg_var_ptr,
.dbg_var_val,
=> try self.airDbgVar(inst),
.call => try self.airCall(inst, .auto),
.call_always_tail => try self.airCall(inst, .always_tail),
.call_never_tail => try self.airCall(inst, .never_tail),
@ -3666,6 +3670,15 @@ fn airDbgStmt(self: *Self, inst: Air.Inst.Index) !void {
return self.finishAirBookkeeping();
}
fn airDbgVar(self: *Self, inst: Air.Inst.Index) !void {
const pl_op = self.air.instructions.items(.data)[inst].pl_op;
const name = self.air.nullTerminatedString(pl_op.payload);
const operand = pl_op.operand;
// TODO emit debug info for this variable
_ = name;
return self.finishAir(inst, .dead, .{ operand, .none, .none });
}
fn genCondBrMir(self: *Self, ty: Type, mcv: MCValue) !u32 {
const abi_size = ty.abiSize(self.target.*);
switch (mcv) {

14
src/codegen/c.zig
View File

@ -1721,6 +1721,10 @@ fn genBody(f: *Function, body: []const Air.Inst.Index) error{ AnalysisFail, OutO
.union_init => try airUnionInit(f, inst),
.prefetch => try airPrefetch(f, inst),
.dbg_var_ptr,
.dbg_var_val,
=> try airDbgVar(f, inst),
.call => try airCall(f, inst, .auto),
.call_always_tail => try airCall(f, inst, .always_tail),
.call_never_tail => try airCall(f, inst, .never_tail),
@ -2651,6 +2655,16 @@ fn airDbgStmt(f: *Function, inst: Air.Inst.Index) !CValue {
return CValue.none;
}
fn airDbgVar(f: *Function, inst: Air.Inst.Index) !CValue {
const pl_op = f.air.instructions.items(.data)[inst].pl_op;
const name = f.air.nullTerminatedString(pl_op.payload);
const operand = try f.resolveInst(pl_op.operand);
_ = operand;
const writer = f.object.writer();
try writer.print("/* var:{s} */\n", .{name});
return CValue.none;
}
fn airBlock(f: *Function, inst: Air.Inst.Index) !CValue {
const ty_pl = f.air.instructions.items(.data)[inst].ty_pl;
const extra = f.air.extraData(Air.Block, ty_pl.payload);

75
src/codegen/llvm.zig
View File

@ -613,6 +613,8 @@ pub const Object = struct {
.single_threaded = module.comp.bin_file.options.single_threaded,
.di_scope = di_scope,
.di_file = di_file,
.prev_dbg_line = 0,
.prev_dbg_column = 0,
};
defer fg.deinit();
@ -2885,8 +2887,7 @@ pub const DeclGen = struct {
}
fn lowerPtrToVoid(dg: *DeclGen, ptr_ty: Type) !*const llvm.Value {
const target = dg.module.getTarget();
const alignment = ptr_ty.ptrAlignment(target);
const alignment = ptr_ty.ptrInfo().data.@"align";
// Even though we are pointing at something which has zero bits (e.g. `void`),
// Pointers are defined to have bits. So we must return something here.
// The value cannot be undefined, because we use the `nonnull` annotation
@ -2902,6 +2903,7 @@ pub const DeclGen = struct {
// have an "undef_but_not_null" attribute. As an example, if this `alloc` AIR
// instruction is followed by a `wrap_optional`, it will return this value
// verbatim, and the result should test as non-null.
const target = dg.module.getTarget();
const int = switch (target.cpu.arch.ptrBitWidth()) {
32 => llvm_usize.constInt(0xaaaaaaaa, .False),
64 => llvm_usize.constInt(0xaaaaaaaa_aaaaaaaa, .False),
@ -3004,6 +3006,8 @@ pub const FuncGen = struct {
builder: *const llvm.Builder,
di_scope: ?*llvm.DIScope,
di_file: ?*llvm.DIFile,
prev_dbg_line: c_uint,
prev_dbg_column: c_uint,
/// This stores the LLVM values used in a function, such that they can be referred to
/// in other instructions. This table is cleared before every function is generated.
@ -3255,6 +3259,8 @@ pub const FuncGen = struct {
.const_ty => unreachable,
.unreach => self.airUnreach(inst),
.dbg_stmt => self.airDbgStmt(inst),
.dbg_var_ptr => try self.airDbgVarPtr(inst),
.dbg_var_val => try self.airDbgVarVal(inst),
// zig fmt: on
};
if (opt_value) |val| {
@ -3967,11 +3973,56 @@ pub const FuncGen = struct {
fn airDbgStmt(self: *FuncGen, inst: Air.Inst.Index) ?*const llvm.Value {
const di_scope = self.di_scope orelse return null;
const dbg_stmt = self.air.instructions.items(.data)[inst].dbg_stmt;
self.builder.setCurrentDebugLocation(
@intCast(c_int, self.dg.decl.src_line + dbg_stmt.line + 1),
@intCast(c_int, dbg_stmt.column + 1),
di_scope,
self.prev_dbg_line = @intCast(c_uint, self.dg.decl.src_line + dbg_stmt.line + 1);
self.prev_dbg_column = @intCast(c_uint, dbg_stmt.column + 1);
self.builder.setCurrentDebugLocation(self.prev_dbg_line, self.prev_dbg_column, di_scope);
return null;
}
fn airDbgVarPtr(self: *FuncGen, inst: Air.Inst.Index) !?*const llvm.Value {
const dib = self.dg.object.di_builder orelse return null;
const pl_op = self.air.instructions.items(.data)[inst].pl_op;
const operand = try self.resolveInst(pl_op.operand);
const name = self.air.nullTerminatedString(pl_op.payload);
const di_local_var = dib.createAutoVariable(
self.di_scope.?,
name.ptr,
self.di_file.?,
self.prev_dbg_line,
try self.dg.lowerDebugType(self.air.typeOf(pl_op.operand)),
true, // always preserve
0, // flags
);
const debug_loc = llvm.getDebugLoc(self.prev_dbg_line, self.prev_dbg_column, self.di_scope.?);
const insert_block = self.builder.getInsertBlock();
_ = dib.insertDeclareAtEnd(operand, di_local_var, debug_loc, insert_block);
return null;
}
fn airDbgVarVal(self: *FuncGen, inst: Air.Inst.Index) !?*const llvm.Value {
const dib = self.dg.object.di_builder orelse return null;
const pl_op = self.air.instructions.items(.data)[inst].pl_op;
const operand = try self.resolveInst(pl_op.operand);
const operand_ty = self.air.typeOf(pl_op.operand);
const name = self.air.nullTerminatedString(pl_op.payload);
const di_local_var = dib.createAutoVariable(
self.di_scope.?,
name.ptr,
self.di_file.?,
self.prev_dbg_line,
try self.dg.lowerDebugType(operand_ty),
true, // always preserve
0, // flags
);
const debug_loc = llvm.getDebugLoc(self.prev_dbg_line, self.prev_dbg_column, self.di_scope.?);
const insert_block = self.builder.getInsertBlock();
if (isByRef(operand_ty)) {
_ = dib.insertDeclareAtEnd(operand, di_local_var, debug_loc, insert_block);
} else {
_ = dib.insertDbgValueIntrinsicAtEnd(operand, di_local_var, debug_loc, insert_block);
}
return null;
}
@ -5272,6 +5323,13 @@ pub const FuncGen = struct {
/// put the alloca instruction at the top of the function!
fn buildAlloca(self: *FuncGen, llvm_ty: *const llvm.Type) *const llvm.Value {
const prev_block = self.builder.getInsertBlock();
const prev_debug_location = self.builder.getCurrentDebugLocation2();
defer {
self.builder.positionBuilderAtEnd(prev_block);
if (self.di_scope != null) {
self.builder.setCurrentDebugLocation2(prev_debug_location);
}
}
const entry_block = self.llvm_func.getFirstBasicBlock().?;
if (entry_block.getFirstInstruction()) |first_inst| {
@ -5279,10 +5337,9 @@ pub const FuncGen = struct {
} else {
self.builder.positionBuilderAtEnd(entry_block);
}
self.builder.clearCurrentDebugLocation();
const alloca = self.builder.buildAlloca(llvm_ty, "");
self.builder.positionBuilderAtEnd(prev_block);
return alloca;
return self.builder.buildAlloca(llvm_ty, "");
}
fn airStore(self: *FuncGen, inst: Air.Inst.Index) !?*const llvm.Value {

2
src/codegen/llvm/bindings.zig
View File

@ -840,7 +840,7 @@ pub const Builder = opaque {
extern fn LLVMBuildExactSDiv(*const Builder, LHS: *const Value, RHS: *const Value, Name: [*:0]const u8) *const Value;
pub const setCurrentDebugLocation = ZigLLVMSetCurrentDebugLocation;
extern fn ZigLLVMSetCurrentDebugLocation(builder: *const Builder, line: c_int, column: c_int, scope: *DIScope) void;
extern fn ZigLLVMSetCurrentDebugLocation(builder: *const Builder, line: c_uint, column: c_uint, scope: *DIScope) void;
pub const clearCurrentDebugLocation = ZigLLVMClearCurrentDebugLocation;
extern fn ZigLLVMClearCurrentDebugLocation(builder: *const Builder) void;

17
src/print_air.zig
View File

@ -233,6 +233,10 @@ const Writer = struct {
.call_never_inline,
=> try w.writeCall(s, inst),
.dbg_var_ptr,
.dbg_var_val,
=> try w.writeDbgVar(s, inst),
.struct_field_ptr => try w.writeStructField(s, inst),
.struct_field_val => try w.writeStructField(s, inst),
.constant => try w.writeConstant(s, inst),
@ -499,7 +503,7 @@ const Writer = struct {
extra_i += inputs.len;
for (outputs) |output| {
const constraint = std.mem.sliceTo(std.mem.sliceAsBytes(w.air.extra[extra_i..]), 0);
const constraint = w.air.nullTerminatedString(extra_i);
// This equation accounts for the fact that even if we have exactly 4 bytes
// for the string, we still use the next u32 for the null terminator.
extra_i += constraint.len / 4 + 1;
@ -515,7 +519,7 @@ const Writer = struct {
}
for (inputs) |input| {
const constraint = std.mem.sliceTo(std.mem.sliceAsBytes(w.air.extra[extra_i..]), 0);
const constraint = w.air.nullTerminatedString(extra_i);
// This equation accounts for the fact that even if we have exactly 4 bytes
// for the string, we still use the next u32 for the null terminator.
extra_i += constraint.len / 4 + 1;
@ -529,7 +533,7 @@ const Writer = struct {
{
var clobber_i: u32 = 0;
while (clobber_i < clobbers_len) : (clobber_i += 1) {
const clobber = std.mem.sliceTo(std.mem.sliceAsBytes(w.air.extra[extra_i..]), 0);
const clobber = w.air.nullTerminatedString(extra_i);
// This equation accounts for the fact that even if we have exactly 4 bytes
// for the string, we still use the next u32 for the null terminator.
extra_i += clobber.len / 4 + 1;
@ -548,6 +552,13 @@ const Writer = struct {
try s.print("{d}:{d}", .{ dbg_stmt.line + 1, dbg_stmt.column + 1 });
}
fn writeDbgVar(w: *Writer, s: anytype, inst: Air.Inst.Index) @TypeOf(s).Error!void {
const pl_op = w.air.instructions.items(.data)[inst].pl_op;
try w.writeOperand(s, inst, 0, pl_op.operand);
const name = w.air.nullTerminatedString(pl_op.payload);
try s.print(", {s}", .{name});
}
fn writeCall(w: *Writer, s: anytype, inst: Air.Inst.Index) @TypeOf(s).Error!void {
const pl_op = w.air.instructions.items(.data)[inst].pl_op;
const extra = w.air.extraData(Air.Call, pl_op.payload);

11
src/print_zir.zig
View File

@ -424,6 +424,10 @@ const Writer = struct {
.param_anytype_comptime,
=> try self.writeStrTok(stream, inst),
.dbg_var_ptr,
.dbg_var_val,
=> try self.writeStrOp(stream, inst),
.param, .param_comptime => try self.writeParam(stream, inst),
.func => try self.writeFunc(stream, inst, false),
@ -1837,6 +1841,13 @@ const Writer = struct {
try self.writeSrc(stream, inst_data.src());
}
fn writeStrOp(self: *Writer, stream: anytype, inst: Zir.Inst.Index) !void {
const inst_data = self.code.instructions.items(.data)[inst].str_op;
const str = inst_data.getStr(self.code);
try self.writeInstRef(stream, inst_data.operand);
try stream.print(", \"{}\")", .{std.zig.fmtEscapes(str)});
}
fn writeFunc(
self: *Writer,
stream: anytype,

4
src/zig_llvm.cpp
View File

@ -791,7 +791,9 @@ void ZigLLVMDisposeDIBuilder(ZigLLVMDIBuilder *dbuilder) {
delete di_builder;
}
void ZigLLVMSetCurrentDebugLocation(LLVMBuilderRef builder, int line, int column, ZigLLVMDIScope *scope) {
void ZigLLVMSetCurrentDebugLocation(LLVMBuilderRef builder,
unsigned int line, unsigned int column, ZigLLVMDIScope *scope)
{
DIScope* di_scope = reinterpret_cast<DIScope*>(scope);
DebugLoc debug_loc = DILocation::get(di_scope->getContext(), line, column, di_scope, nullptr, false);
unwrap(builder)->SetCurrentDebugLocation(debug_loc);

4
src/zig_llvm.h
View File

@ -228,8 +228,8 @@ ZIG_EXTERN_C void ZigLLVMSetModulePICLevel(LLVMModuleRef module);
ZIG_EXTERN_C void ZigLLVMSetModulePIELevel(LLVMModuleRef module);
ZIG_EXTERN_C void ZigLLVMSetModuleCodeModel(LLVMModuleRef module, LLVMCodeModel code_model);
ZIG_EXTERN_C void ZigLLVMSetCurrentDebugLocation(LLVMBuilderRef builder, int line, int column,
struct ZigLLVMDIScope *scope);
ZIG_EXTERN_C void ZigLLVMSetCurrentDebugLocation(LLVMBuilderRef builder,
unsigned int line, unsigned int column, struct ZigLLVMDIScope *scope);
ZIG_EXTERN_C void ZigLLVMClearCurrentDebugLocation(LLVMBuilderRef builder);
ZIG_EXTERN_C struct ZigLLVMDIScope *ZigLLVMLexicalBlockToScope(struct ZigLLVMDILexicalBlock *lexical_block);

2
test/behavior/align.zig
View File

@ -6,6 +6,8 @@ const native_arch = builtin.target.cpu.arch;
var foo: u8 align(4) = 100;
test "global variable alignment" {
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
comptime try expect(@typeInfo(@TypeOf(&foo)).Pointer.alignment == 4);
comptime try expect(@TypeOf(&foo) == *align(4) u8);
{

1
test/behavior/bugs/2692.zig
View File

@ -5,6 +5,7 @@ fn foo(a: []u8) void {
}
test "address of 0 length array" {
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;

1
test/behavior/bugs/4954.zig
View File

@ -5,6 +5,7 @@ fn f(buf: []u8) void {
}
test "crash" {
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;

2
test/behavior/bugs/5398.zig
View File

@ -19,10 +19,12 @@ pub const Renderable = struct {
var renderable: Renderable = undefined;
test "assignment of field with padding" {
if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
renderable = Renderable{
.mesh = Mesh{ .id = 0 },
.material = Material{

4
test/behavior/eval.zig
View File

@ -416,6 +416,8 @@ fn copyWithPartialInline(s: []u32, b: []u8) void {
}
test "binary math operator in partially inlined function" {
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
var s: [4]u32 = undefined;
var b: [16]u8 = undefined;
@ -545,6 +547,8 @@ var simple_struct = SimpleStruct{ .field = 1234 };
const bound_fn = simple_struct.method;
test "ptr to local array argument at comptime" {
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
comptime {
var bytes: [10]u8 = undefined;
modifySomeBytes(bytes[0..]);

19
test/behavior/floatop.zig
View File

@ -302,7 +302,11 @@ fn testExp2() !void {
}
test "@log" {
if (builtin.zig_backend != .stage1) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
comptime try testLog();
try testLog();
@ -326,13 +330,22 @@ fn testLog() !void {
try expect(math.approxEqAbs(ty, @log(@as(ty, 2)), 0.6931471805599, eps));
try expect(math.approxEqAbs(ty, @log(@as(ty, 5)), 1.6094379124341, eps));
}
}
test "@log with vectors" {
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_x86_64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
{
var v: Vector(4, f32) = [_]f32{ 1.1, 2.2, 0.3, 0.4 };
var v: @Vector(4, f32) = [_]f32{ 1.1, 2.2, 0.3, 0.4 };
var result = @log(v);
try expect(math.approxEqAbs(f32, @log(@as(f32, 1.1)), result[0], epsilon));
try expect(math.approxEqAbs(f32, @log(@as(f32, 2.2)), result[1], epsilon));
try expect(math.approxEqAbs(f32, @log(@as(f32, 0.3)), result[2], epsilon));
try expect(@log(@as(f32, 0.3)) == result[2]);
try expect(math.approxEqAbs(f32, @log(@as(f32, 0.4)), result[3], epsilon));
}
}

1
test/behavior/fn.zig
View File

@ -296,6 +296,7 @@ fn voidFun(a: i32, b: void, c: i32, d: void) !void {
}
test "call function with empty string" {
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
acceptsString("");

1
test/behavior/for.zig
View File

@ -151,6 +151,7 @@ test "2 break statements and an else" {
}
test "for loop with pointer elem var" {
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO

1
test/behavior/generics.zig
View File

@ -170,6 +170,7 @@ fn getFirstByte(comptime T: type, mem: []const T) u8 {
}
test "generic fn keeps non-generic parameter types" {
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;

2
test/behavior/slice.zig
View File

@ -242,6 +242,7 @@ test "result location zero sized array inside struct field implicit cast to slic
}
test "runtime safety lets us slice from len..len" {
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
@ -350,6 +351,7 @@ test "empty array to slice" {
}
test "@ptrCast slice to pointer" {
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
const S = struct {

1
test/behavior/union.zig
View File

@ -453,6 +453,7 @@ pub const FooUnion = union(enum) {
var glbl_array: [2]FooUnion = undefined;
test "initialize global array of union" {
if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;

3
test/behavior/union_with_members.zig
View File

@ -1,3 +1,4 @@
const builtin = @import("builtin");
const std = @import("std");
const expect = std.testing.expect;
const mem = std.mem;
@ -16,6 +17,8 @@ const ET = union(enum) {
};
test "enum with members" {
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
const a = ET{ .SINT = -42 };
const b = ET{ .UINT = 42 };
var buf: [20]u8 = undefined;