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Re: PR33749 - Wrong evaluation of expressions in lhs of assignment statements
- From: "Paul Richard Thomas" <paul dot richard dot thomas at gmail dot com>
- To: "fortran at gcc dot gnu dot org" <fortran at gcc dot gnu dot org>, "Paul Brook" <paul at codesourcery dot com>
- Date: Sun, 14 Oct 2007 20:39:10 +0200
- Subject: Re: PR33749 - Wrong evaluation of expressions in lhs of assignment statements
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Dear All,
> The problem is that the expression for the index in p(p) gets
> correctly identified as a variable in -m32 but becomes a function in
> -m64. The latter causes need_tmp to be set, which than "corrects"
> this problem.
This is the offender:
ASSIGN MAIN__:p(__convert_i4_i8[[((MAIN__:p(FULL)))]]) (/ 1 , 2 , 3 , 4 /)
The conversion comes through and triggers an unconditional production of a temp.
>
> I have a patch for PR33749 but will have to fix the above first,
> otherwise it will lurk undetected and get us in other ways. I wonder
> how often unnecessary temporaries are created in -m64?
I now feel confident about submitting the patch - it's on its way in a few days.
Cheers
Paul
>
--
The knack of flying is learning how to throw yourself at the ground and miss.
--Hitchhikers Guide to the Galaxy