Steven Bosscher [EMAIL PROTECTED] writes:
On Sunday 26 February 2006 14:23, Kenneth Zadeck wrote:
Did richard's untested patch not fix this?
No. That patch only makes postreload not emit those reg-reg moves,
but it does not prevent reload from producing the redundant insns in
the first
Hi,
While teaching dce.c on the dataflow-branch to delete noop-moves,
I noticed that most noop moves are produced by reload. It inserts
duplicate insns for some reloads, postreload turns the duplicate
reload into a simple reg-reg move (but the lhs and rhs are the same
register of course), and
Steven Bosscher wrote:
Hi,
While teaching dce.c on the dataflow-branch to delete noop-moves,
I noticed that most noop moves are produced by reload. It inserts
duplicate insns for some reloads, postreload turns the duplicate
reload into a simple reg-reg move (but the lhs and rhs are the same
On Sunday 26 February 2006 14:23, Kenneth Zadeck wrote:
Did richard's untested patch not fix this?
No. That patch only makes postreload not emit those reg-reg moves,
but it does not prevent reload from producing the redundant insns in
the first place. So that patch just papers over the problem
