Orkuncakilkaya
e010c2cecc
`float` (32-bit) and `double` (64-bit) with + - * / %, comparisons and unary minus. Decimal literals take their type from context and stay `fixed` elsewhere; int and long promote implicitly (LUDIC_WARN_FLOAT_PROMOTE=1 lists every promotion). float(), double(), int(), long() and fixed() convert; floats(n)/doubles(n) buffers; float fields, globals, constants and parameters; Math.* computes in float for float arguments; string/print write the shortest round-tripping decimal; float_bits/float_from_bits expose the bits. @deterministic code may not use floats. The f_* runtime helpers stay as they are. Editors know the new type words; the JetBrains plugin is 1.5.0. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
65 lines
3 KiB
Text
65 lines
3 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: pointer # out-param: the type at the computed address
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# address of `base.field`
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function emit_member_addr(e: Node) -> pointer {
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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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function emit_index_addr(e: Node) -> pointer {
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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 int 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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if (base.ty == "fixeds") { # a `fixeds` buffer: 32-bit fixed elements
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let rf = emit_bind(`getelementptr inbounds i32, ptr {base.code}, i32 {bi.code}`)
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g_addr_ty = "fixed"
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return rf
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}
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if (base.ty == "floats") or (base.ty == "doubles") { # IEEE float / double elements
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var et = "float"
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if (base.ty == "doubles") { et = "double" }
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let rd = emit_bind(`getelementptr inbounds {et}, ptr {base.code}, i32 {bi.code}`)
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g_addr_ty = et
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return rd
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}
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if (base.ty == "pointers") { # a `pointers` buffer: pointer elements
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let rp = emit_bind(`getelementptr inbounds ptr, ptr {base.code}, i32 {bi.code}`)
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g_addr_ty = "ptr"
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return rp
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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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# 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) # (evaluate index BEFORE setting
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let r = nreg() # g_addr_ty — a member-access index
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emit(" "); emit(r); emit(" = getelementptr inbounds "); emit(llty(el)) # overwrites it)
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emit(", ptr "); emit(data); emit(", i32 "); emit(ix.code); emit("\n")
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g_addr_ty = el # set last so the caller sees the element type
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return r
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}
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