Merge pull request #10839 from joachimschmidt557/stage2-arm

stage2 ARM: genTypedValue for all integer types

src/arch/arm/CodeGen.zig

@@ -1703,9 +1703,18 @@ fn airStructFieldVal(self: *Self, inst: Air.Inst.Index) !void {
         const struct_field_offset = @intCast(u32, struct_ty.structFieldOffset(index, self.target.*));
         const struct_field_ty = struct_ty.structFieldType(index);
         const struct_field_size = @intCast(u32, struct_field_ty.abiSize(self.target.*));
+        const adjusted_field_offset = struct_size - struct_field_offset - struct_field_size;
+
         switch (mcv) {
+            .dead, .unreach => unreachable,
+            .stack_argument_offset => |off| {
+                break :result MCValue{ .stack_argument_offset = off + adjusted_field_offset };
+            },
             .stack_offset => |off| {
-                break :result MCValue{ .stack_offset = off + struct_size - struct_field_offset - struct_field_size };
+                break :result MCValue{ .stack_offset = off + adjusted_field_offset };
+            },
+            .memory => |addr| {
+                break :result MCValue{ .memory = addr + adjusted_field_offset };
             },
             else => return self.fail("TODO implement codegen struct_field_val for {}", .{mcv}),
         }
@@ -3180,7 +3189,6 @@ fn setRegOrMem(self: *Self, ty: Type, loc: MCValue, val: MCValue) !void {
 fn genSetStack(self: *Self, ty: Type, stack_offset: u32, mcv: MCValue) InnerError!void {
     switch (mcv) {
         .dead => unreachable,
-        .ptr_stack_offset => unreachable,
         .ptr_embedded_in_code => unreachable,
         .unreach, .none => return, // Nothing to do.
         .undef => {
@@ -3194,6 +3202,10 @@ fn genSetStack(self: *Self, ty: Type, stack_offset: u32, mcv: MCValue) InnerErro
                 else => return self.fail("TODO implement memset", .{}),
             }
         },
+        .ptr_stack_offset => {
+            const reg = try self.copyToTmpRegister(ty, mcv);
+            return self.genSetStack(ty, stack_offset, MCValue{ .register = reg });
+        },
         .compare_flags_unsigned,
         .compare_flags_signed,
         .immediate,
@@ -3858,9 +3870,7 @@ fn lowerDeclRef(self: *Self, tv: TypedValue, decl: *Module.Decl) InnerError!MCVa
         const got_addr = got.p_vaddr + decl.link.elf.offset_table_index * ptr_bytes;
         return MCValue{ .memory = got_addr };
     } else if (self.bin_file.cast(link.File.MachO)) |_| {
-        // TODO I'm hacking my way through here by repurposing .memory for storing
-        // index to the GOT target symbol index.
-        return MCValue{ .memory = decl.link.macho.local_sym_index };
+        unreachable; // unsupported architecture for MachO
     } else if (self.bin_file.cast(link.File.Coff)) |coff_file| {
         const got_addr = coff_file.offset_table_virtual_address + decl.link.coff.offset_table_index * ptr_bytes;
         return MCValue{ .memory = got_addr };
@@ -3929,10 +3939,19 @@ fn genTypedValue(self: *Self, typed_value: TypedValue) InnerError!MCValue {
         },
         .Int => {
             const info = typed_value.ty.intInfo(self.target.*);
-            if (info.bits > ptr_bits or info.signedness == .signed) {
-                return self.fail("TODO const int bigger than ptr and signed int", .{});
+            if (info.bits <= ptr_bits) {
+                const unsigned = switch (info.signedness) {
+                    .signed => blk: {
+                        const signed = @intCast(i32, typed_value.val.toSignedInt());
+                        break :blk @bitCast(u32, signed);
+                    },
+                    .unsigned => @intCast(u32, typed_value.val.toUnsignedInt()),
+                };
+
+                return MCValue{ .immediate = unsigned };
+            } else {
+                return self.lowerUnnamedConst(typed_value);
             }
-            return MCValue{ .immediate = @intCast(u32, typed_value.val.toUnsignedInt()) };
         },
         .Bool => {
             return MCValue{ .immediate = @boolToInt(typed_value.val.toBool()) };

test/behavior/align.zig

@@ -93,8 +93,6 @@ test "@ptrCast preserves alignment of bigger source" {
 }
 
 test "alignstack" {
-    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
-
     try expect(fnWithAlignedStack() == 1234);
 }
 

test/behavior/bugs/1277.zig

@@ -12,6 +12,5 @@ fn f() i32 {
 }
 
 test "don't emit an LLVM global for a const function when it's in an optional in a struct" {
-    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     try std.testing.expect(s.f.?() == 1234);
 }

test/behavior/bugs/1310.zig

@@ -23,6 +23,5 @@ fn agent_callback(_vm: [*]VM, options: [*]u8) callconv(.C) i32 {
 }
 
 test "fixed" {
-    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     try expect(agent_callback(undefined, undefined) == 11);
 }

test/behavior/bugs/2006.zig

@@ -7,7 +7,6 @@ const S = struct {
 };
 test "bug 2006" {
     if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
-    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
     if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
     var a: S = undefined;
     a = S{ .p = undefined };

test/behavior/cast.zig

@@ -35,8 +35,6 @@ fn peerTypeTAndOptionalT(c: bool, b: bool) ?usize {
 }
 
 test "resolve undefined with integer" {
-    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
-
     try testResolveUndefWithInt(true, 1234);
     comptime try testResolveUndefWithInt(true, 1234);
 }
@@ -205,8 +203,6 @@ test "implicit cast from *[N]T to [*c]T" {
 }
 
 test "*usize to *void" {
-    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
-
     var i = @as(usize, 0);
     var v = @ptrCast(*void, &i);
     v.* = {};

test/behavior/struct.zig

@@ -114,8 +114,6 @@ test "struct byval assign" {
 }
 
 test "call struct static method" {
-    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
-
     const result = StructWithNoFields.add(3, 4);
     try expect(result == 7);
 }
@@ -176,16 +174,12 @@ const MemberFnTestFoo = struct {
 };
 
 test "call member function directly" {
-    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
-
     const instance = MemberFnTestFoo{ .x = 1234 };
     const result = MemberFnTestFoo.member(instance);
     try expect(result == 1234);
 }
 
 test "store member function in variable" {
-    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
-
     const instance = MemberFnTestFoo{ .x = 1234 };
     const memberFn = MemberFnTestFoo.member;
     const result = memberFn(instance);
@@ -193,8 +187,6 @@ test "store member function in variable" {
 }
 
 test "member functions" {
-    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
-
     const r = MemberFnRand{ .seed = 1234 };
     try expect(r.getSeed() == 1234);
 }
@@ -244,8 +236,6 @@ test "call method with mutable reference to struct with no fields" {
 }
 
 test "usingnamespace within struct scope" {
-    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
-
     const S = struct {
         usingnamespace struct {
             pub fn inner() i32 {