Orkuncakilkaya
ae0bae0457
32-bit word access is indexing now, not peek32/poke32: peek32(ui_rx, i) -> ui_rx[i] (reads an int) poke32(rt_fb, i, c) -> rt_fb[i] = c (writes an int) A buffer typed `words` (a pointer whose elements are i32) indexes with `w[i]` as a full int; a plain `ptr`/`str` keeps byte indexing. emit_index_addr picks the element type from the base's type — byte-identical IR to the old intrinsics, so the migration reproduces the compiler and every golden render exactly. The ~60 word buffers (rt_fb, tt_*/gc_* font tables, png_px/spr_px pixels, ui_* layout arrays) were retyped from `ptr` to `words` scope-aware (per-function, so the s/out/p byte-vs-word name collisions across functions stay correct), then the 254 peek32/poke32 sites migrated to indexing. A scope-analysis miss left 12 buffers (gc_*, sc_d, ui_rx/ui_ry) un-retyped — caught as a menu golden diff and fixed. No true mixed byte+word access exists on any one variable, so a per-buffer element type is sound. Reseeded (22527 lines); C-free fixpoint holds; goldens byte-identical; 18/18; vocab (byte/words types in, peek32/poke32 out) + doc-fences clean. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
48 lines
2 KiB
Text
48 lines
2 KiB
Text
# emit_addr.ludic — addresses of lvalues (struct fields and slice elements),
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# shared by expression loads and assignment stores. Each returns the address
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# register; the element/field type is written into g_addr_ty.
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var g_addr_ty: ptr # out-param: the type at the computed address
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# address of `base.field`
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fn emit_member_addr(e: Node) -> ptr {
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let base = emit_expr(e.a)
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let s = layout_node(base.ty)
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if (s == null) { perr(`member access on non-aggregate {base.ty}`) }
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let fidx = field_index(s, e.s)
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if fidx < 0 { perr(`no such field {e.s}`) }
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g_addr_ty = field_type(s, e.s)
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let r = nreg()
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emit(" "); emit(r); emit(" = getelementptr inbounds "); emit(layout_ty(base.ty))
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emit(", ptr "); emit(base.code); emit(", i32 0, i32 "); emit(itoa(fidx)); emit("\n")
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return r
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}
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# address of `base[index]` (slices only in this subset)
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fn emit_index_addr(e: Node) -> ptr {
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let base = emit_expr(e.a)
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if not is_slice_ty(base.ty) { # a raw pointer: address of element i
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let bi = emit_expr(e.b) # (evaluate index first — it may set g_addr_ty)
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if (base.ty == "words") { # a `words` buffer: 32-bit elements
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let rw = emit_bind(`getelementptr inbounds i32, ptr {base.code}, i32 {bi.code}`)
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g_addr_ty = "int"
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return rw
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}
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let r = emit_bind(`getelementptr inbounds i8, ptr {base.code}, i32 {bi.code}`) # a ptr/str: bytes
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g_addr_ty = "byte" # set last so the caller sees it
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return r
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}
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let el = slice_elem(base.ty)
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g_addr_ty = el
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# load the data pointer from the slice header (field 0)
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let dp = nreg()
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emit(" "); emit(dp); emit(" = getelementptr inbounds %LSlice, ptr ")
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emit(base.code); emit(", i32 0, i32 0\n")
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let data = nreg()
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emit(" "); emit(data); emit(" = load ptr, ptr "); emit(dp); emit("\n")
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let ix = emit_expr(e.b)
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let r = nreg()
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emit(" "); emit(r); emit(" = getelementptr inbounds "); emit(llty(el))
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emit(", ptr "); emit(data); emit(", i32 "); emit(ix.code); emit("\n")
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return r
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}
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