Legalize: implement scalarization of binary operations

src/codegen/c.zig

@@ -1591,7 +1591,7 @@ pub const DeclGen = struct {
                         try writer.writeAll("((");
                         try dg.renderCType(writer, ctype);
                         return writer.print("){x})", .{
-                            try dg.fmtIntLiteral(try pt.undefValue(.usize), .Other),
+                            try dg.fmtIntLiteral(.undef_usize, .Other),
                         });
                     },
                     .slice => {
@@ -1605,7 +1605,7 @@ pub const DeclGen = struct {
                         const ptr_ty = ty.slicePtrFieldType(zcu);
                         try dg.renderType(writer, ptr_ty);
                         return writer.print("){x}, {0x}}}", .{
-                            try dg.fmtIntLiteral(try dg.pt.undefValue(.usize), .Other),
+                            try dg.fmtIntLiteral(.undef_usize, .Other),
                         });
                     },
                 },
@@ -6376,7 +6376,7 @@ fn airArrayToSlice(f: *Function, inst: Air.Inst.Index) !CValue {
             if (operand_child_ctype.info(ctype_pool) == .array) {
                 try writer.writeByte('&');
                 try f.writeCValueDeref(writer, operand);
-                try writer.print("[{}]", .{try f.fmtIntLiteral(try pt.intValue(.usize, 0))});
+                try writer.print("[{}]", .{try f.fmtIntLiteral(.zero_usize)});
             } else try f.writeCValue(writer, operand, .Other);
         }
         try a.end(f, writer);
@@ -6907,7 +6907,7 @@ fn airMemset(f: *Function, inst: Air.Inst.Index, safety: bool) !CValue {
         try writer.writeAll("for (");
         try f.writeCValue(writer, index, .Other);
         try writer.writeAll(" = ");
-        try f.object.dg.renderValue(writer, try pt.intValue(.usize, 0), .Other);
+        try f.object.dg.renderValue(writer, .zero_usize, .Other);
         try writer.writeAll("; ");
         try f.writeCValue(writer, index, .Other);
         try writer.writeAll(" != ");
@@ -8311,11 +8311,11 @@ const Vectorize = struct {
 
             try writer.writeAll("for (");
             try f.writeCValue(writer, local, .Other);
-            try writer.print(" = {d}; ", .{try f.fmtIntLiteral(try pt.intValue(.usize, 0))});
+            try writer.print(" = {d}; ", .{try f.fmtIntLiteral(.zero_usize)});
             try f.writeCValue(writer, local, .Other);
             try writer.print(" < {d}; ", .{try f.fmtIntLiteral(try pt.intValue(.usize, ty.vectorLen(zcu)))});
             try f.writeCValue(writer, local, .Other);
-            try writer.print(" += {d}) {{\n", .{try f.fmtIntLiteral(try pt.intValue(.usize, 1))});
+            try writer.print(" += {d}) {{\n", .{try f.fmtIntLiteral(.one_usize)});
             f.object.indent_writer.pushIndent();
 
             break :index .{ .index = local };

src/codegen/c/Type.zig

@@ -1408,6 +1408,15 @@ pub const Pool = struct {
                 .bits = pt.zcu.errorSetBits(),
             }, mod, kind),
 
+            .ptr_usize_type,
+            => return pool.getPointer(allocator, .{
+                .elem_ctype = .usize,
+            }),
+            .ptr_const_comptime_int_type,
+            => return pool.getPointer(allocator, .{
+                .elem_ctype = .void,
+                .@"const" = true,
+            }),
             .manyptr_u8_type,
             => return pool.getPointer(allocator, .{
                 .elem_ctype = .u8,
@@ -1418,11 +1427,6 @@ pub const Pool = struct {
                 .elem_ctype = .u8,
                 .@"const" = true,
             }),
-            .single_const_pointer_to_comptime_int_type,
-            => return pool.getPointer(allocator, .{
-                .elem_ctype = .void,
-                .@"const" = true,
-            }),
             .slice_const_u8_type,
             .slice_const_u8_sentinel_0_type,
             => {
@@ -2157,11 +2161,16 @@ pub const Pool = struct {
             },
 
             .undef,
+            .undef_bool,
+            .undef_usize,
+            .undef_u1,
             .zero,
             .zero_usize,
+            .zero_u1,
             .zero_u8,
             .one,
             .one_usize,
+            .one_u1,
             .one_u8,
             .four_u8,
             .negative_one,
@@ -2172,7 +2181,7 @@ pub const Pool = struct {
             .bool_false,
             .empty_tuple,
             .none,
-            => unreachable,
+            => unreachable, // values, not types
 
             _ => |ip_index| switch (ip.indexToKey(ip_index)) {
                 .int_type => |int_info| return pool.fromIntInfo(allocator, int_info, mod, kind),

src/codegen/llvm.zig

@@ -3081,10 +3081,11 @@ pub const Object = struct {
             .undefined_type,
             .enum_literal_type,
             => unreachable,
+            .ptr_usize_type,
+            .ptr_const_comptime_int_type,
             .manyptr_u8_type,
             .manyptr_const_u8_type,
             .manyptr_const_u8_sentinel_0_type,
-            .single_const_pointer_to_comptime_int_type,
             => .ptr,
             .slice_const_u8_type,
             .slice_const_u8_sentinel_0_type,
@@ -3098,11 +3099,16 @@ pub const Object = struct {
             => unreachable,
             // values, not types
             .undef,
+            .undef_bool,
+            .undef_usize,
+            .undef_u1,
             .zero,
             .zero_usize,
+            .zero_u1,
             .zero_u8,
             .one,
             .one_usize,
+            .one_u1,
             .one_u8,
             .four_u8,
             .negative_one,