new hlt block terminator

It is handy to express when
the end of a block cannot be
reached. If a hlt terminator
is executed, it traps the
program.

We don't go the llvm way and
specify execution semantics as
undefined behavior.
This commit is contained in:
Quentin Carbonneaux 2022-11-24 11:08:33 +01:00
parent b5da3f3d64
commit 9126afa2da
9 changed files with 30 additions and 13 deletions

View file

@ -494,6 +494,9 @@ rv64_emitfn(Fn *fn, FILE *f)
emitins(i, fn, f);
lbl = 1;
switch (b->jmp.type) {
case Jhlt:
fprintf(f, "\tebreak\n");
break;
case Jret0:
if (fn->dynalloc) {
if (frame - 16 <= 2048)