Re: [RFC] PR tree-optimization/67628: Make tree ifcombine more symmetric and interactions with dom

> On Sep 23, 2015, at 1:59 AM, Kyrill Tkachov wrote: > > >> On 22/09/15 20:31, Jeff Law wrote: >>> On 09/22/2015 07:36 AM, Kyrill Tkachov wrote: >>> Hi all, >>> Unfortunately, I see a testsuite regression with this patch: >>> FAIL: gcc.dg/pr66299-2.c scan-tree-dump-not

Re: [PATCH][combine][1/2] Try to simplify before substituting

On Jul 17, 2015, at 7:36 PM, Kyrill Tkachov kyrylo.tkac...@arm.com wrote: On 16/07/15 19:28, Segher Boessenkool wrote: On Thu, Jul 16, 2015 at 07:17:54PM +0100, Kyrill Tkachov wrote: If you always want to simplify first, does it work to move this whole big block behind the simplify

[PATCH/MIPS] Add a delegitimize target hook for MIPS

Hi, MIPS does not currently implement a mips_delegitimize_address target hook and for n64, a RTL is produced which the standard delegitimize cannot handle: (const:DI (plus:DI (unspec:DI [ (symbol_ref:DI (s) var_decl 0x7fe08a5a3140 s) ] 229)

[PATCH MIPS] Improve unaligned 32bits load on MIPS64

Hi, Currently doing a 32bit unaligned load on MIPS64, produces 4 byte loads, this can be improved to using lwl/lwr instead. The problem is the code in mips_expand_ext_as_unaligned_load that handles this case does handle the case where the register is DImode but the width is 32. This patch

[PATCH][MIPS] Improve Octeon Pop instruction usage

Hi, The Octeon pop instruction does not take into account the upper 32bits of the 64bit register, so its usage can be optimized when there is a truncation right before the instruction. This patch implements this small optimization. OK? Bootstrapped and tested on MIPS64-linux-gnu (Octeon)