use rustc_middle::ty::layout::FnAbiOf;
use rustc_middle::ty::print::with_no_trimmed_paths;
-use indexmap::IndexSet;
-
use crate::constant::ConstantCx;
+use crate::debuginfo::FunctionDebugContext;
use crate::prelude::*;
use crate::pretty_clif::CommentWriter;
-pub(crate) fn codegen_fn<'tcx>(
- cx: &mut crate::CodegenCx<'tcx>,
+pub(crate) struct CodegenedFunction {
+ symbol_name: String,
+ func_id: FuncId,
+ func: Function,
+ clif_comments: CommentWriter,
+ func_debug_cx: Option<FunctionDebugContext>,
+}
+
+#[cfg_attr(not(feature = "jit"), allow(dead_code))]
+pub(crate) fn codegen_and_compile_fn<'tcx>(
+ tcx: TyCtxt<'tcx>,
+ cx: &mut crate::CodegenCx,
+ cached_context: &mut Context,
module: &mut dyn Module,
instance: Instance<'tcx>,
) {
- let tcx = cx.tcx;
-
let _inst_guard =
crate::PrintOnPanic(|| format!("{:?} {}", instance, tcx.symbol_name(instance).name));
+
+ let cached_func = std::mem::replace(&mut cached_context.func, Function::new());
+ let codegened_func = codegen_fn(tcx, cx, cached_func, module, instance);
+
+ compile_fn(cx, cached_context, module, codegened_func);
+}
+
+pub(crate) fn codegen_fn<'tcx>(
+ tcx: TyCtxt<'tcx>,
+ cx: &mut crate::CodegenCx,
+ cached_func: Function,
+ module: &mut dyn Module,
+ instance: Instance<'tcx>,
+) -> CodegenedFunction {
debug_assert!(!instance.substs.needs_infer());
let mir = tcx.instance_mir(instance.def);
});
// Declare function
- let symbol_name = tcx.symbol_name(instance);
+ let symbol_name = tcx.symbol_name(instance).name.to_string();
let sig = get_function_sig(tcx, module.isa().triple(), instance);
- let func_id = module.declare_function(symbol_name.name, Linkage::Local, &sig).unwrap();
-
- cx.cached_context.clear();
+ let func_id = module.declare_function(&symbol_name, Linkage::Local, &sig).unwrap();
// Make the FunctionBuilder
let mut func_ctx = FunctionBuilderContext::new();
- let mut func = std::mem::replace(&mut cx.cached_context.func, Function::new());
+ let mut func = cached_func;
+ func.clear();
func.name = ExternalName::user(0, func_id.as_u32());
func.signature = sig;
func.collect_debug_info();
// Predefine blocks
let start_block = bcx.create_block();
let block_map: IndexVec<BasicBlock, Block> =
- (0..mir.basic_blocks().len()).map(|_| bcx.create_block()).collect();
+ (0..mir.basic_blocks.len()).map(|_| bcx.create_block()).collect();
// Make FunctionCx
let target_config = module.target_config();
let pointer_type = target_config.pointer_type();
let clif_comments = crate::pretty_clif::CommentWriter::new(tcx, instance);
+ let func_debug_cx = if let Some(debug_context) = &mut cx.debug_context {
+ Some(debug_context.define_function(tcx, &symbol_name, mir.span))
+ } else {
+ None
+ };
+
let mut fx = FunctionCx {
cx,
module,
target_config,
pointer_type,
constants_cx: ConstantCx::new(),
+ func_debug_cx,
instance,
symbol_name,
caller_location: None, // set by `codegen_fn_prelude`
clif_comments,
- source_info_set: indexmap::IndexSet::new(),
+ last_source_file: None,
next_ssa_var: 0,
};
- let arg_uninhabited = fx
- .mir
- .args_iter()
- .any(|arg| fx.layout_of(fx.monomorphize(fx.mir.local_decls[arg].ty)).abi.is_uninhabited());
-
- if !crate::constant::check_constants(&mut fx) {
- fx.bcx.append_block_params_for_function_params(fx.block_map[START_BLOCK]);
- fx.bcx.switch_to_block(fx.block_map[START_BLOCK]);
- crate::trap::trap_unreachable(&mut fx, "compilation should have been aborted");
- } else if arg_uninhabited {
- fx.bcx.append_block_params_for_function_params(fx.block_map[START_BLOCK]);
- fx.bcx.switch_to_block(fx.block_map[START_BLOCK]);
- fx.bcx.ins().trap(TrapCode::UnreachableCodeReached);
- } else {
- tcx.sess.time("codegen clif ir", || {
- tcx.sess
- .time("codegen prelude", || crate::abi::codegen_fn_prelude(&mut fx, start_block));
- codegen_fn_content(&mut fx);
- });
- }
+ tcx.sess.time("codegen clif ir", || codegen_fn_body(&mut fx, start_block));
// Recover all necessary data from fx, before accessing func will prevent future access to it.
- let instance = fx.instance;
+ let symbol_name = fx.symbol_name;
let clif_comments = fx.clif_comments;
- let source_info_set = fx.source_info_set;
- let local_map = fx.local_map;
+ let func_debug_cx = fx.func_debug_cx;
fx.constants_cx.finalize(fx.tcx, &mut *fx.module);
- crate::pretty_clif::write_clif_file(
- tcx,
- "unopt",
- module.isa(),
- instance,
- &func,
- &clif_comments,
- );
+ if cx.should_write_ir {
+ crate::pretty_clif::write_clif_file(
+ tcx.output_filenames(()),
+ &symbol_name,
+ "unopt",
+ module.isa(),
+ &func,
+ &clif_comments,
+ );
+ }
// Verify function
verify_func(tcx, &clif_comments, &func);
- compile_fn(
- cx,
- module,
- instance,
- symbol_name.name,
- func_id,
- func,
- clif_comments,
- source_info_set,
- local_map,
- );
+ CodegenedFunction { symbol_name, func_id, func, clif_comments, func_debug_cx }
}
-fn compile_fn<'tcx>(
- cx: &mut crate::CodegenCx<'tcx>,
+pub(crate) fn compile_fn(
+ cx: &mut crate::CodegenCx,
+ cached_context: &mut Context,
module: &mut dyn Module,
- instance: Instance<'tcx>,
- symbol_name: &str,
- func_id: FuncId,
- func: Function,
- mut clif_comments: CommentWriter,
- source_info_set: IndexSet<SourceInfo>,
- local_map: IndexVec<mir::Local, CPlace<'tcx>>,
+ codegened_func: CodegenedFunction,
) {
- let tcx = cx.tcx;
+ let clif_comments = codegened_func.clif_comments;
// Store function in context
- let context = &mut cx.cached_context;
+ let context = cached_context;
context.clear();
- context.func = func;
+ context.func = codegened_func.func;
// If the return block is not reachable, then the SSA builder may have inserted an `iconst.i128`
// instruction, which doesn't have an encoding.
// invalidate it when it would change.
context.domtree.clear();
- // Perform rust specific optimizations
- tcx.sess.time("optimize clif ir", || {
- crate::optimize::optimize_function(
- tcx,
- module.isa(),
- instance,
- context,
- &mut clif_comments,
- );
- });
-
#[cfg(any())] // This is never true
let _clif_guard = {
use std::fmt::Write;
};
// Define function
- tcx.sess.time("define function", || {
- context.want_disasm = crate::pretty_clif::should_write_ir(tcx);
- module.define_function(func_id, context).unwrap();
+ cx.profiler.verbose_generic_activity("define function").run(|| {
+ context.want_disasm = cx.should_write_ir;
+ module.define_function(codegened_func.func_id, context).unwrap();
});
- // Write optimized function to file for debugging
- crate::pretty_clif::write_clif_file(
- tcx,
- "opt",
- module.isa(),
- instance,
- &context.func,
- &clif_comments,
- );
+ if cx.should_write_ir {
+ // Write optimized function to file for debugging
+ crate::pretty_clif::write_clif_file(
+ &cx.output_filenames,
+ &codegened_func.symbol_name,
+ "opt",
+ module.isa(),
+ &context.func,
+ &clif_comments,
+ );
- if let Some(disasm) = &context.mach_compile_result.as_ref().unwrap().disasm {
- crate::pretty_clif::write_ir_file(
- tcx,
- || format!("{}.vcode", tcx.symbol_name(instance).name),
- |file| file.write_all(disasm.as_bytes()),
- )
+ if let Some(disasm) = &context.compiled_code().unwrap().disasm {
+ crate::pretty_clif::write_ir_file(
+ &cx.output_filenames,
+ &format!("{}.vcode", codegened_func.symbol_name),
+ |file| file.write_all(disasm.as_bytes()),
+ )
+ }
}
// Define debuginfo for function
let isa = module.isa();
let debug_context = &mut cx.debug_context;
let unwind_context = &mut cx.unwind_context;
- tcx.sess.time("generate debug info", || {
+ cx.profiler.verbose_generic_activity("generate debug info").run(|| {
if let Some(debug_context) = debug_context {
- debug_context.define_function(
- instance,
- func_id,
- symbol_name,
- isa,
+ codegened_func.func_debug_cx.unwrap().finalize(
+ debug_context,
+ codegened_func.func_id,
context,
- &source_info_set,
- local_map,
);
}
- unwind_context.add_function(func_id, &context, isa);
+ unwind_context.add_function(codegened_func.func_id, &context, isa);
});
}
});
}
-fn codegen_fn_content(fx: &mut FunctionCx<'_, '_, '_>) {
- for (bb, bb_data) in fx.mir.basic_blocks().iter_enumerated() {
+fn codegen_fn_body(fx: &mut FunctionCx<'_, '_, '_>, start_block: Block) {
+ if !crate::constant::check_constants(fx) {
+ fx.bcx.append_block_params_for_function_params(fx.block_map[START_BLOCK]);
+ fx.bcx.switch_to_block(fx.block_map[START_BLOCK]);
+ // compilation should have been aborted
+ fx.bcx.ins().trap(TrapCode::UnreachableCodeReached);
+ return;
+ }
+
+ let arg_uninhabited = fx
+ .mir
+ .args_iter()
+ .any(|arg| fx.layout_of(fx.monomorphize(fx.mir.local_decls[arg].ty)).abi.is_uninhabited());
+ if arg_uninhabited {
+ fx.bcx.append_block_params_for_function_params(fx.block_map[START_BLOCK]);
+ fx.bcx.switch_to_block(fx.block_map[START_BLOCK]);
+ fx.bcx.ins().trap(TrapCode::UnreachableCodeReached);
+ return;
+ }
+ fx.tcx.sess.time("codegen prelude", || crate::abi::codegen_fn_prelude(fx, start_block));
+
+ for (bb, bb_data) in fx.mir.basic_blocks.iter_enumerated() {
let block = fx.get_block(bb);
fx.bcx.switch_to_block(block);
template,
operands,
*options,
+ *destination,
);
-
- match *destination {
- Some(destination) => {
- let destination_block = fx.get_block(destination);
- fx.bcx.ins().jump(destination_block, &[]);
- }
- None => {
- fx.bcx.ins().trap(TrapCode::UnreachableCodeReached);
- }
- }
}
TerminatorKind::Resume | TerminatorKind::Abort => {
// FIXME implement unwinding
let operand = codegen_operand(fx, operand);
operand.unsize_value(fx, lval);
}
+ Rvalue::Cast(CastKind::DynStar, _, _) => {
+ // FIXME(dyn-star)
+ unimplemented!()
+ }
Rvalue::Discriminant(place) => {
let place = codegen_place(fx, place);
let value = place.to_cvalue(fx);
- let discr =
- crate::discriminant::codegen_get_discriminant(fx, value, dest_layout);
- lval.write_cvalue(fx, discr);
+ crate::discriminant::codegen_get_discriminant(fx, lval, value, dest_layout);
}
Rvalue::Repeat(ref operand, times) => {
let operand = codegen_operand(fx, operand);
| StatementKind::AscribeUserType(..) => {}
StatementKind::Coverage { .. } => fx.tcx.sess.fatal("-Zcoverage is unimplemented"),
- StatementKind::CopyNonOverlapping(inner) => {
- let dst = codegen_operand(fx, &inner.dst);
- let pointee = dst
- .layout()
- .pointee_info_at(fx, rustc_target::abi::Size::ZERO)
- .expect("Expected pointer");
- let dst = dst.load_scalar(fx);
- let src = codegen_operand(fx, &inner.src).load_scalar(fx);
- let count = codegen_operand(fx, &inner.count).load_scalar(fx);
- let elem_size: u64 = pointee.size.bytes();
- let bytes =
- if elem_size != 1 { fx.bcx.ins().imul_imm(count, elem_size as i64) } else { count };
- fx.bcx.call_memcpy(fx.target_config, dst, src, bytes);
- }
+ StatementKind::Intrinsic(ref intrinsic) => match &**intrinsic {
+ // We ignore `assume` intrinsics, they are only useful for optimizations
+ NonDivergingIntrinsic::Assume(_) => {}
+ NonDivergingIntrinsic::CopyNonOverlapping(mir::CopyNonOverlapping {
+ src,
+ dst,
+ count,
+ }) => {
+ let dst = codegen_operand(fx, dst);
+ let pointee = dst
+ .layout()
+ .pointee_info_at(fx, rustc_target::abi::Size::ZERO)
+ .expect("Expected pointer");
+ let dst = dst.load_scalar(fx);
+ let src = codegen_operand(fx, src).load_scalar(fx);
+ let count = codegen_operand(fx, count).load_scalar(fx);
+ let elem_size: u64 = pointee.size.bytes();
+ let bytes = if elem_size != 1 {
+ fx.bcx.ins().imul_imm(count, elem_size as i64)
+ } else {
+ count
+ };
+ fx.bcx.call_memcpy(fx.target_config, dst, src, bytes);
+ }
+ },
}
}
args: &[Value],
span: Span,
) {
- let def_id =
- fx.tcx.lang_items().require(lang_item).unwrap_or_else(|s| fx.tcx.sess.span_fatal(span, &s));
+ let def_id = fx
+ .tcx
+ .lang_items()
+ .require(lang_item)
+ .unwrap_or_else(|e| fx.tcx.sess.span_fatal(span, e.to_string()));
let instance = Instance::mono(fx.tcx, def_id).polymorphize(fx.tcx);
let symbol_name = fx.tcx.symbol_name(instance).name;
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