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LLVM codgen support for unwinding inline assembly

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This commit is contained in:
cynecx 2021-09-04 19:25:09 +02:00
parent 948d0243de
commit 5728c165fa
1 changed files with 15 additions and 6 deletions
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21
src/base.rs
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@ -239,7 +239,8 @@ fn codegen_fn_content(fx: &mut FunctionCx<'_, '_, '_>) {
fx.add_comment(inst, terminator_head);
}
fx.set_debug_loc(bb_data.terminator().source_info);
let source_info = bb_data.terminator().source_info;
fx.set_debug_loc(source_info);
match &bb_data.terminator().kind {
TerminatorKind::Goto { target } => {
@ -295,19 +296,19 @@ fn codegen_fn_content(fx: &mut FunctionCx<'_, '_, '_>) {
let len = codegen_operand(fx, len).load_scalar(fx);
let index = codegen_operand(fx, index).load_scalar(fx);
let location = fx
.get_caller_location(bb_data.terminator().source_info.span)
.get_caller_location(source_info.span)
.load_scalar(fx);
codegen_panic_inner(
fx,
rustc_hir::LangItem::PanicBoundsCheck,
&[index, len, location],
bb_data.terminator().source_info.span,
source_info.span,
);
}
_ => {
let msg_str = msg.description();
codegen_panic(fx, msg_str, bb_data.terminator().source_info.span);
codegen_panic(fx, msg_str, source_info.span);
}
}
}
@ -378,10 +379,18 @@ fn codegen_fn_content(fx: &mut FunctionCx<'_, '_, '_>) {
options,
destination,
line_spans: _,
cleanup,
} => {
if cleanup.is_some() {
fx.tcx.sess.span_fatal(
source_info.span,
"cranelift doesn't support unwinding from inline assembly.",
);
}
crate::inline_asm::codegen_inline_asm(
fx,
bb_data.terminator().source_info.span,
source_info.span,
template,
operands,
*options,
@ -415,7 +424,7 @@ fn codegen_fn_content(fx: &mut FunctionCx<'_, '_, '_>) {
}
TerminatorKind::Drop { place, target, unwind: _ } => {
let drop_place = codegen_place(fx, *place);
crate::abi::codegen_drop(fx, bb_data.terminator().source_info.span, drop_place);
crate::abi::codegen_drop(fx, source_info.span, drop_place);
let target_block = fx.get_block(*target);
fx.bcx.ins().jump(target_block, &[]);