Hi,
this is the bootstrap failure of GCC 11 on MinGW64 configured with --enable-
tune=nocona. The bottom line is that SEH does not support CFI for epilogues
but the x86 back-end nevertheless attaches it to instructions, so we have to
filter it out and this is done by detecting the end of the pr
On Wed, May 05, 2021 at 01:00:35PM +0200, Eric Botcazou wrote:
> 2021-05-05 Eric Botcazou
>
> PR rtl-optimization/100411
> * cfgcleanup.c (try_crossjump_to_edge): Also skip end of prologue
> and beginning of function markers.
>
> --
> Eric Botcazou
> diff --git a/gcc/cfgcle
> I mean, can't we have just one while loop that skips over all debug insns,
> NOTE_INSN_BASIC_BLOCK_P, NOTE_INSN_PROLOGUE_END and NOTE_INSN_FUNCTION_BEG
> and stops on anything else, or, if we want to skip at most one of some or
> all of those note kinds, do some tracking if we've already skipped
On Wed, May 05, 2021 at 01:21:20PM +0200, Eric Botcazou wrote:
> > I mean, can't we have just one while loop that skips over all debug insns,
> > NOTE_INSN_BASIC_BLOCK_P, NOTE_INSN_PROLOGUE_END and NOTE_INSN_FUNCTION_BEG
> > and stops on anything else, or, if we want to skip at most one of some or
> At least for NOTE_INSN_BASIC_BLOCK skipping more than one might
> be problematic, because that would mean we've skipped into a different basic
> block and it wouldn't surprise me if split_block in that case crashed or
> did something weird (if the first argument is not BLOCK_FOR_INSN of the
> sec
On Wed, May 05, 2021 at 02:19:27PM +0200, Eric Botcazou wrote:
> > At least for NOTE_INSN_BASIC_BLOCK skipping more than one might
> > be problematic, because that would mean we've skipped into a different basic
> > block and it wouldn't surprise me if split_block in that case crashed or
> > did so
