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[PATCH, i386]: Fix PR89827, ICE: in convert_op

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>
Date: Tue, 26 Mar 2019 20:05:35 +0100
Subject: [PATCH, i386]: Fix PR89827, ICE: in convert_op

Attached patch fixes a corner case in STV pass where the shift operand
register equals shift count register. The specialization for shift
insns marked register as processed, but didn't process shift input
operand, leaving an unprocessed DImode register.

2019-03-26  Uroš Bizjak  <ubizjak@gmail.com>

    PR target/89827
    * config/i386/i386.c (dimode_scalar_chain::convert_reg):
    Also process XEXP (src, 0) of a shift insn.

testsuite/ChangeLog:

2019-03-26  Uroš Bizjak  <ubizjak@gmail.com>

    PR target/89827
    * gcc.target/i386/pr89827.c: New test.

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

Committed to mainline SVN, will be backported to gcc-8 branch.

Uros.

Attachment: p.diff.txt
Description: Text document

Follow-Ups:
- [PATCH, i386]: Fix PR89848, ICE: in convert_op
  - From: Uros Bizjak

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