On Wed, Mar 09, 2022 at 03:21:53PM +0100, Richard Biener wrote:
> As noticed we are looking for INDIRECT_REF with allows_mem to avoid
> a copy since then we're sure the operand is in memory (assuming
> *& is folded). But INDIRECT_REFs are no longer a thing, the following
> replaces the check with a check for a MEM_REF with a non-ADDR_EXPR
> operand. This should fix the regression part without fully
> exploring all possibilities around tcc_reference operands.
>
> I've placed an assert that we do not see an INDIRECT_REF here.
> While we gimplify asm operands we never do any checking on its
> IL afterwards.
>
> Bootstrapped on x86_64-unknown-linux-gnu, testing in progress.
>
> OK if that succeeds?
>
> Thanks,
> Richard.
>
> 2022-03-09 Richard Biener <rguent...@suse.de>
>
> * cfgexpand.c (expand_gimple_asm): Special-case MEM_REF
> with non-decl operand, avoiding a copy.
LGTM.
Jakub
