[RFA] [PATCH 4/4] Ignore reads of "dead" memory locations in DSE

This is the final patch in the kit to improve our DSE implementation. It's based on a observation by Richi. Namely that a read from bytes of memory that are dead can be ignored. By ignoring such reads we can sometimes find additional stores that allow us to either eliminate or trim an earlie

[patch,fortran] PR78622 [F03] Incorrect parsing of quotes in the char-literal-constant of the DT data descriptor

Hi all, The attached patch regression tested on x86-64-linux. This adds a static function to allocate and extract the DT format string that may contain doubled quotes. OK for trunk, test case also attched. Jerry 2016-12-16 Jerry DeLisle PR fortran/78622 * io.c (format_le

Re: [PATCH] fix powerpc64le bootstrap failure caused by r243661 (PR 78817)

On 12/14/2016 09:19 PM, Jeff Law wrote: On 12/14/2016 03:56 PM, Martin Sebor wrote: The -Wnonnull warning improvement (PR c/17308 - nonnull attribute not as useful as it could be) causes a couple of false positives in a powerpc64le bootstrap. The attached fix suppresses them. It passes bootstra

Re: [RFA] [PR tree-optimization/33562] [PATCH 1/4] Byte tracking in DSE

On Thu, Dec 15, 2016 at 06:54:43PM -0700, Jeff Law wrote: >unsigned cnt = 0; > + bitmap live_bytes = NULL; > + bitmap orig_live_bytes = NULL; > >*use_stmt = NULL; > > + /* REF is a memory write. Go ahead and get its base, size, extent > + information and encode the bytes written

Re: [PATCH] PR59170 make pretty printers check for singular iterators

On Fri, 16 Dec 2016 02:07:07 +0100, Jonathan Wakely wrote: > On 15/12/16 22:19 +0100, Jan Kratochvil wrote: > > Just with the GDB 'compile' project (libcc1) which is planned to be used for > > all GDB expressions evalation the Xmethods will no longer work. > > But then *it can just get compiled, s

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