zig

commit 47aaaec6ea32754ad9d7f9f25e874d63439aead8 (tree)
parent 4c36a403a895bd3e7dc7b4dd308f2b82a3dab60a
Author: Alex Rønne Petersen <alex@alexrp.com>
Date:   Thu, 31 Oct 2024 09:50:14 +0100

Air: Always return true for inline assembly in mustLower().

AstGen requires inline assembly to either have outputs or be marked volatile, so
there doesn't appear to be any point in doing these checks.

Diffstat:
M
src/Air.zig
 | 
9
+--------

1 file changed, 1 insertion(+), 8 deletions(-)
diff --git a/src/Air.zig b/src/Air.zig
@@ -1673,6 +1673,7 @@ pub fn mustLower(air: Air, inst: Air.Inst.Index, ip: *const InternPool) bool {
     const data = air.instructions.items(.data)[@intFromEnum(inst)];
     return switch (air.instructions.items(.tag)[@intFromEnum(inst)]) {
         .arg,
+        .assembly,
         .block,
         .loop,
         .repeat,
@@ -1879,14 +1880,6 @@ pub fn mustLower(air: Air, inst: Air.Inst.Index, ip: *const InternPool) bool {
         .work_group_id,
         => false,
 
-        .assembly => {
-            const extra = air.extraData(Air.Asm, data.ty_pl.payload);
-            const is_volatile = @as(u1, @truncate(extra.data.flags >> 31)) != 0;
-            return is_volatile or if (extra.data.outputs_len == 1)
-                @as(Air.Inst.Ref, @enumFromInt(air.extra[extra.end])) != .none
-            else
-                extra.data.outputs_len > 1;
-        },
         .load => air.typeOf(data.ty_op.operand, ip).isVolatilePtrIp(ip),
         .slice_elem_val, .ptr_elem_val => air.typeOf(data.bin_op.lhs, ip).isVolatilePtrIp(ip),
         .atomic_load => switch (data.atomic_load.order) {