================
@@ -4215,6 +4215,92 @@ RValue CodeGenFunction::EmitBuiltinExpr(const GlobalDecl
GD, unsigned BuiltinID,
break;
}
+ // stdc_load8_*: load N bytes from a const unsigned char* and assemble
+ // into an integer using little-endian or big-endian byte order.
+ case Builtin::BIstdc_load8_leu8:
+ case Builtin::BIstdc_load8_les8:
+ case Builtin::BIstdc_load8_beu8:
+ case Builtin::BIstdc_load8_bes8:
+ case Builtin::BIstdc_load8_aligned_leu8:
+ case Builtin::BIstdc_load8_aligned_les8:
+ case Builtin::BIstdc_load8_aligned_beu8:
+ case Builtin::BIstdc_load8_aligned_bes8:
+ case Builtin::BIstdc_load8_leu16:
+ case Builtin::BIstdc_load8_les16:
+ case Builtin::BIstdc_load8_beu16:
+ case Builtin::BIstdc_load8_bes16:
+ case Builtin::BIstdc_load8_aligned_leu16:
+ case Builtin::BIstdc_load8_aligned_les16:
+ case Builtin::BIstdc_load8_aligned_beu16:
+ case Builtin::BIstdc_load8_aligned_bes16:
+ case Builtin::BIstdc_load8_leu32:
+ case Builtin::BIstdc_load8_les32:
+ case Builtin::BIstdc_load8_beu32:
+ case Builtin::BIstdc_load8_bes32:
+ case Builtin::BIstdc_load8_aligned_leu32:
+ case Builtin::BIstdc_load8_aligned_les32:
+ case Builtin::BIstdc_load8_aligned_beu32:
+ case Builtin::BIstdc_load8_aligned_bes32:
+ case Builtin::BIstdc_load8_leu64:
+ case Builtin::BIstdc_load8_les64:
+ case Builtin::BIstdc_load8_beu64:
+ case Builtin::BIstdc_load8_bes64:
+ case Builtin::BIstdc_load8_aligned_leu64:
+ case Builtin::BIstdc_load8_aligned_les64:
+ case Builtin::BIstdc_load8_aligned_beu64:
+ case Builtin::BIstdc_load8_aligned_bes64: {
+ bool IsBE = BuiltinID == Builtin::BIstdc_load8_beu8 ||
+ BuiltinID == Builtin::BIstdc_load8_bes8 ||
+ BuiltinID == Builtin::BIstdc_load8_beu16 ||
+ BuiltinID == Builtin::BIstdc_load8_bes16 ||
+ BuiltinID == Builtin::BIstdc_load8_beu32 ||
+ BuiltinID == Builtin::BIstdc_load8_bes32 ||
+ BuiltinID == Builtin::BIstdc_load8_beu64 ||
+ BuiltinID == Builtin::BIstdc_load8_bes64 ||
+ BuiltinID == Builtin::BIstdc_load8_aligned_beu8 ||
+ BuiltinID == Builtin::BIstdc_load8_aligned_bes8 ||
+ BuiltinID == Builtin::BIstdc_load8_aligned_beu16 ||
+ BuiltinID == Builtin::BIstdc_load8_aligned_bes16 ||
+ BuiltinID == Builtin::BIstdc_load8_aligned_beu32 ||
+ BuiltinID == Builtin::BIstdc_load8_aligned_bes32 ||
+ BuiltinID == Builtin::BIstdc_load8_aligned_beu64 ||
+ BuiltinID == Builtin::BIstdc_load8_aligned_bes64;
+ bool IsAligned = BuiltinID == Builtin::BIstdc_load8_aligned_leu8 ||
+ BuiltinID == Builtin::BIstdc_load8_aligned_les8 ||
+ BuiltinID == Builtin::BIstdc_load8_aligned_beu8 ||
+ BuiltinID == Builtin::BIstdc_load8_aligned_bes8 ||
+ BuiltinID == Builtin::BIstdc_load8_aligned_leu16 ||
+ BuiltinID == Builtin::BIstdc_load8_aligned_les16 ||
+ BuiltinID == Builtin::BIstdc_load8_aligned_beu16 ||
+ BuiltinID == Builtin::BIstdc_load8_aligned_bes16 ||
+ BuiltinID == Builtin::BIstdc_load8_aligned_leu32 ||
+ BuiltinID == Builtin::BIstdc_load8_aligned_les32 ||
+ BuiltinID == Builtin::BIstdc_load8_aligned_beu32 ||
+ BuiltinID == Builtin::BIstdc_load8_aligned_bes32 ||
+ BuiltinID == Builtin::BIstdc_load8_aligned_leu64 ||
+ BuiltinID == Builtin::BIstdc_load8_aligned_les64 ||
+ BuiltinID == Builtin::BIstdc_load8_aligned_beu64 ||
+ BuiltinID == Builtin::BIstdc_load8_aligned_bes64;
+
+ llvm::Type *IntTy = ConvertType(E->getType());
+ unsigned BitWidth = IntTy->getIntegerBitWidth();
+ assert(
+ (BitWidth == 8 || BitWidth == 16 || BitWidth == 32 || BitWidth == 64)
&&
+ "unexpected bit width for stdc_load8_*");
+ CharUnits Alignment = IsAligned
+ ? getContext().getTypeAlignInChars(E->getType())
+ : CharUnits::One();
+ Address Addr =
+ EmitPointerWithAlignment(E->getArg(0)).withAlignment(Alignment);
----------------
efriedma-quic wrote:
We could do something more fancy here with the alignment, but I guess it
doesn't matter that much.
https://github.com/llvm/llvm-project/pull/203666
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