| author |  Robin Voetter <robin@voetter.nl> 2022-08-27 12:55:28+02:00 |
| committer | Robin Voetter <robin@voetter.nl> 2022-10-12 20:36:14+02:00 |
| log | 9f14681473140cd79e6d38cb2bb46a90c1be1259 |
| tree | 29a1774bb986ef24679911bfb7de662a34d66ec1 |
| parent | 5d429b03e3d43e937e2b517d594275034a873959 |
| signature |  Commit is signed but in an unrecognized format. |
stage2: check address space cast validity
3 files changed, 41 insertions(+), 3 deletions(-)
lib- std
lib/std/target.zig+11
| ... | ... | @@ -1157,6 +1157,17 @@ pub const Target = struct { |
| 1157 | 1157 | }; |
| 1158 | 1158 | } |
| 1159 | 1159 | |
| 1160 | /// Returns whether this architecture supporst the address space | |
| 1161 | pub fn supportsAddressSpace(arch: Arch, address_space: std.builtin.AddressSpace) bool { | |
| 1162 | const is_nvptx = arch == .nvptx or arch == .nvptx64; | |
| 1163 | return switch (address_space) { | |
| 1164 | .generic => true, | |
| 1165 | .fs, .gs, .ss => arch == .x86_64 or arch == .i386, | |
| 1166 | .global, .constant, .local, .shared => arch == .amdgcn or is_nvptx, | |
| 1167 | .param => is_nvptx, | |
| 1168 | }; | |
| 1169 | } | |
| 1170 | ||
| 1160 | 1171 | pub fn ptrBitWidth(arch: Arch) u16 { |
| 1161 | 1172 | switch (arch) { |
| 1162 | 1173 | .avr, |
src/Sema.zig+10-2
| ... | ... | @@ -18181,13 +18181,21 @@ fn zirAddrSpaceCast(sema: *Sema, block: *Block, extended: Zir.Inst.Extended.Inst |
| 18181 | 18181 | const ptr = try sema.resolveInst(extra.rhs); |
| 18182 | 18182 | const ptr_ty = sema.typeOf(ptr); |
| 18183 | 18183 | |
| 18184 | ||
| 18184 | 18185 | // TODO in addition to pointers, this instruction is supposed to work for |
| 18185 | 18186 | // pointer-like optionals and slices. |
| 18186 | 18187 | try sema.checkPtrOperand(block, ptr_src, ptr_ty); |
| 18187 | 18188 | |
| 18188 | // TODO check address space cast validity. | |
| 18189 | 18189 | const src_addrspace = ptr_ty.ptrAddressSpace(); |
| 18190 | _ = src_addrspace; | |
| 18190 | if (!target_util.addrSpaceCastIsValid(sema.mod.getTarget(), src_addrspace, dest_addrspace)) { | |
| 18191 | const msg = msg: { | |
| 18192 | const msg = try sema.errMsg(block, src, "invalid address space cast", .{}); | |
| 18193 | errdefer msg.destroy(sema.gpa); | |
| 18194 | try sema.errNote(block, src, msg, "address space '{s}' is not compatible with address space '{s}'", .{ @tagName(src_addrspace), @tagName(dest_addrspace) }); | |
| 18195 | break :msg msg; | |
| 18196 | }; | |
| 18197 | return sema.failWithOwnedErrorMsg(msg); | |
| 18198 | } | |
| 18191 | 18199 | |
| 18192 | 18200 | const ptr_info = ptr_ty.ptrInfo().data; |
| 18193 | 18201 | const dest_ty = try Type.ptr(sema.arena, sema.mod, .{ |
src/target.zig+20-1
| ... | ... | @@ -1,5 +1,6 @@ |
| 1 | 1 | const std = @import("std"); |
| 2 | 2 | const Type = @import("type.zig").Type; |
| 3 | const AddressSpace = std.builtin.AddressSpace; | |
| 3 | 4 | |
| 4 | 5 | pub const ArchOsAbi = struct { |
| 5 | 6 | arch: std.Target.Cpu.Arch, |
| ... | ... | @@ -635,12 +636,30 @@ pub fn defaultAddressSpace( |
| 635 | 636 | /// Query the default address space for functions themselves. |
| 636 | 637 | function, |
| 637 | 638 | }, |
| 638 | ) std.builtin.AddressSpace { | |
| 639 | ) AddressSpace { | |
| 639 | 640 | _ = target; |
| 640 | 641 | _ = context; |
| 641 | 642 | return .generic; |
| 642 | 643 | } |
| 643 | 644 | |
| 645 | /// Returns true if pointers in `from` can be converted to a pointer in `to`. | |
| 646 | pub fn addrSpaceCastIsValid( | |
| 647 | target: std.Target, | |
| 648 | from: AddressSpace, | |
| 649 | to: AddressSpace, | |
| 650 | ) bool { | |
| 651 | const arch = target.cpu.arch; | |
| 652 | switch (arch) { | |
| 653 | .x86_64, .i386 => return arch.supportsAddressSpace(from) and arch.supportsAddressSpace(to), | |
| 654 | .amdgcn => { | |
| 655 | const to_generic = arch.supportsAddressSpace(from) and to == .generic; | |
| 656 | const from_generic = arch.supportsAddressSpace(to) and from == .generic; | |
| 657 | return to_generic or from_generic; | |
| 658 | }, | |
| 659 | else => return from == .generic and to == .generic, | |
| 660 | } | |
| 661 | } | |
| 662 | ||
| 644 | 663 | pub fn llvmMachineAbi(target: std.Target) ?[:0]const u8 { |
| 645 | 664 | const have_float = switch (target.abi) { |
| 646 | 665 | .gnuilp32 => return "ilp32", |