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Re: wrong assertion in caller-save.c
- From: Jeff Law <law at redhat dot com>
- To: Eric Botcazou <ebotcazou at adacore dot com>, BELBACHIR Selim <selim dot belbachir at fr dot thalesgroup dot com>
- Cc: gcc at gcc dot gnu dot org
- Date: Fri, 10 Jan 2014 14:46:45 -0700
- Subject: Re: wrong assertion in caller-save.c
- Authentication-results: sourceware.org; auth=none
- References: <12235_1389377088_52D03640_12235_1644_1_9C88BF562A27AA41B242B2780441926E210D2857DA at THSONEA01CMS05P dot one dot grp> <6380325 dot qcWgXJckTX at polaris>
On 01/10/14 14:44, Eric Botcazou wrote:
In my backend movdi pattern has unfortunately code '0' (depends on pattern
declaration order). When gcc tried to determine if my DI regs can be saved
and restore as 'caller saves' (in caller-save.c::init_caller_save()) it
failed on this wrong assertion.
I'd arrange for avoiding code 0 instead because this disables the cache.
Agreed, but the assert in caller-save is still wrong and ought to be fixed.
jeff