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Air: Fix mustLower() to consider volatile for a handful of instructions.

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These can all potentially operate on volatile pointers.
This commit is contained in:
Alex Rønne Petersen 2024-10-31 09:55:31 +01:00
parent 4bf17f0a78
commit 16b331f5fd
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1 changed files with 2 additions and 6 deletions
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8
src/Air.zig
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@ -1799,12 +1799,8 @@ pub fn mustLower(air: Air, inst: Air.Inst.Index, ip: *const InternPool) bool {
.cmp_vector_optimized, .cmp_vector_optimized,
.is_null, .is_null,
.is_non_null, .is_non_null,
.is_null_ptr,
.is_non_null_ptr,
.is_err, .is_err,
.is_non_err, .is_non_err,
.is_err_ptr,
.is_non_err_ptr,
.bool_and, .bool_and,
.bool_or, .bool_or,
.fptrunc, .fptrunc,
@ -1817,7 +1813,6 @@ pub fn mustLower(air: Air, inst: Air.Inst.Index, ip: *const InternPool) bool {
.unwrap_errunion_payload, .unwrap_errunion_payload,
.unwrap_errunion_err, .unwrap_errunion_err,
.unwrap_errunion_payload_ptr, .unwrap_errunion_payload_ptr,
.unwrap_errunion_err_ptr,
.wrap_errunion_payload, .wrap_errunion_payload,
.wrap_errunion_err, .wrap_errunion_err,
.struct_field_ptr, .struct_field_ptr,
@ -1862,7 +1857,8 @@ pub fn mustLower(air: Air, inst: Air.Inst.Index, ip: *const InternPool) bool {
.work_group_id, .work_group_id,
=> false, => false,
.load => air.typeOf(data.ty_op.operand, ip).isVolatilePtrIp(ip), .is_non_null_ptr, .is_null_ptr, .is_non_err_ptr, .is_err_ptr => air.typeOf(data.un_op, ip).isVolatilePtrIp(ip),
.load, .unwrap_errunion_err_ptr => air.typeOf(data.ty_op.operand, ip).isVolatilePtrIp(ip),
.slice_elem_val, .ptr_elem_val => air.typeOf(data.bin_op.lhs, 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) { .atomic_load => switch (data.atomic_load.order) {
.unordered, .monotonic => air.typeOf(data.atomic_load.ptr, ip).isVolatilePtrIp(ip), .unordered, .monotonic => air.typeOf(data.atomic_load.ptr, ip).isVolatilePtrIp(ip),