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cg_llvm: remove pointee types and pointercast/bitcast-of-ptr

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This commit is contained in:
Erik Desjardins 2022-12-06 00:07:28 -05:00
parent 4c96822796
commit b6540777fe
17 changed files with 118 additions and 283 deletions
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17
compiler/rustc_codegen_llvm/src/abi.rs
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@ -216,9 +216,7 @@ impl<'ll, 'tcx> ArgAbiExt<'ll, 'tcx> for ArgAbi<'tcx, Ty<'tcx>> {
// uses it for i16 -> {i8, i8}, but not for i24 -> {i8, i8, i8}.
let can_store_through_cast_ptr = false;
if can_store_through_cast_ptr {
let cast_ptr_llty = bx.type_ptr_to(cast.llvm_type(bx));
let cast_dst = bx.pointercast(dst.llval, cast_ptr_llty);
bx.store(val, cast_dst, self.layout.align.abi);
bx.store(val, dst.llval, self.layout.align.abi);
} else {
// The actual return type is a struct, but the ABI
// adaptation code has cast it into some scalar type. The
@ -336,7 +334,7 @@ impl<'ll, 'tcx> FnAbiLlvmExt<'ll, 'tcx> for FnAbi<'tcx, Ty<'tcx>> {
PassMode::Direct(_) | PassMode::Pair(..) => self.ret.layout.immediate_llvm_type(cx),
PassMode::Cast(cast, _) => cast.llvm_type(cx),
PassMode::Indirect { .. } => {
llargument_tys.push(cx.type_ptr_to(self.ret.memory_ty(cx)));
llargument_tys.push(cx.type_ptr());
cx.type_void()
}
};
@ -364,9 +362,7 @@ impl<'ll, 'tcx> FnAbiLlvmExt<'ll, 'tcx> for FnAbi<'tcx, Ty<'tcx>> {
}
cast.llvm_type(cx)
}
PassMode::Indirect { attrs: _, extra_attrs: None, on_stack: _ } => {
cx.type_ptr_to(arg.memory_ty(cx))
}
PassMode::Indirect { attrs: _, extra_attrs: None, on_stack: _ } => cx.type_ptr(),
};
llargument_tys.push(llarg_ty);
}
@ -379,12 +375,7 @@ impl<'ll, 'tcx> FnAbiLlvmExt<'ll, 'tcx> for FnAbi<'tcx, Ty<'tcx>> {
}
fn ptr_to_llvm_type(&self, cx: &CodegenCx<'ll, 'tcx>) -> &'ll Type {
unsafe {
llvm::LLVMPointerType(
self.llvm_type(cx),
cx.data_layout().instruction_address_space.0 as c_uint,
)
}
cx.type_ptr_ext(cx.data_layout().instruction_address_space)
}
fn llvm_cconv(&self) -> llvm::CallConv {