update std lib and compiler sources to new for loop syntax

src/codegen/spirv/Assembler.zig

@@ -392,7 +392,7 @@ fn processTypeInstruction(self: *Assembler) !AsmValue {
         .OpTypeFunction => blk: {
             const param_operands = operands[2..];
             const param_types = try self.spv.arena.alloc(SpvType.Ref, param_operands.len);
-            for (param_types) |*param, i| {
+            for (param_types, 0..) |*param, i| {
                 param.* = try self.resolveTypeRef(param_operands[i].ref_id);
             }
             const payload = try self.spv.arena.create(SpvType.Payload.Function);

src/codegen/spirv/Module.zig

@@ -161,7 +161,7 @@ pub fn flush(self: Module, file: std.fs.File) !void {
 
     var iovc_buffers: [buffers.len]std.os.iovec_const = undefined;
     var file_size: u64 = 0;
-    for (iovc_buffers) |*iovc, i| {
+    for (&iovc_buffers, 0..) |*iovc, i| {
         // Note, since spir-v supports both little and big endian we can ignore byte order here and
         // just treat the words as a sequence of bytes.
         const bytes = std.mem.sliceAsBytes(buffers[i]);
@@ -389,7 +389,7 @@ fn decorateStruct(self: *Module, target: IdRef, info: *const Type.Payload.Struct
     // Decorations for the struct members.
     const extra = info.member_decoration_extra;
     var extra_i: u32 = 0;
-    for (info.members) |member, i| {
+    for (info.members, 0..) |member, i| {
         const d = member.decorations;
         const index = @intCast(Word, i);
         switch (d.matrix_layout) {

src/codegen/spirv/Section.zig

@@ -195,7 +195,7 @@ fn writeContextDependentNumber(section: *Section, operand: spec.LiteralContextDe
 
 fn writeExtendedMask(section: *Section, comptime Operand: type, operand: Operand) void {
     var mask: Word = 0;
-    inline for (@typeInfo(Operand).Struct.fields) |field, bit| {
+    inline for (@typeInfo(Operand).Struct.fields, 0..) |field, bit| {
         switch (@typeInfo(field.type)) {
             .Optional => if (@field(operand, field.name) != null) {
                 mask |= 1 << @intCast(u5, bit);

src/codegen/spirv/type.zig

@@ -98,7 +98,7 @@ pub const Type = extern union {
                 const struct_b = b.payload(.@"struct");
                 if (struct_a.members.len != struct_b.members.len)
                     return false;
-                for (struct_a.members) |mem_a, i| {
+                for (struct_a.members, 0..) |mem_a, i| {
                     if (!std.meta.eql(mem_a, struct_b.members[i]))
                         return false;
                 }