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[PATCH, i386]: Fix PR 77991, ICE on x32 in plus_constant, at explow.c

From: Uros Bizjak <ubizjak at gmail dot com>
To: "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>
Cc: "H. J. Lu" <hjl dot tools at gmail dot com>
Date: Tue, 18 Oct 2016 16:47:44 +0200
Subject: [PATCH, i386]: Fix PR 77991, ICE on x32 in plus_constant, at explow.c
Authentication-results: sourceware.org; auth=none

Hello!

We have to return Pmode RTX from legitimize_tls_address. There was a
path that returned DImode, when SImode was expected. Since the code
deals with various linker bugs, let's leave the generated sequence
as-is and just convert it to Pmode before return.

2016-10-18  Uros Bizjak  <ubizjak@gmail.com>

    PR target/77991
    * config/i386/i386.c (legitimize_tls_address)
    <case TLS_MODEL_INITIAL_EXEC>: For TARGET_64BIT || TARGET_ANY_GNU_TLS
    convert dest to Pmode if different than Pmode.

testsuite/ChangeLog:

2016-10-18  Uros Bizjak  <ubizjak@gmail.com>

    PR target/77991
    * gcc.target/i386/pr77991.c: New test.

Bootstrapped and regression tested on x86_64-linux-gnu {,-m32}.

Patch was committed to mainline SVN and will be backported to other
release branches.

Uros.

Attachment: p.diff.txt
Description: Text document

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