[committed] More useless code elimination on the H8

2021-06-18 Thread Jeff Law via Gcc-patches
Two minor improvements on the H8 today. First, the source operand of a SET could be a SYMBOL_REF.  That's valid for setting condition codes.  I'm guessing its primarily valuable when testing for weak symbols.  Either way, adding support for that in select_cc_mode allows the compiler to remove

Re: [Patch] Add 'default' to -foffload=; document that flag [PR67300]

2021-06-18 Thread Sandra Loosemore
On 6/17/21 5:05 PM, Tobias Burnus wrote: On 17.06.21 23:57, Sandra Loosemore wrote: On 6/17/21 1:40 PM, Jakub Jelinek wrote: Could we introduce a different option which wouldn't imply enabling that target: -foffload-options==option I think that works – in particular, if we do not document al

Re: [PATCH][version 3]add -ftrivial-auto-var-init and variable attribute "uninitialized" to gcc

2021-06-18 Thread Kees Cook via Gcc-patches
On Wed, Jun 16, 2021 at 07:39:02PM +, Qing Zhao wrote: > So, the major question now is: > > Is one single repeatable pattern enough for pattern initialization for all > different types of auto variables? > > If YES, then the implementation for pattern initialization will be much > easier an

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