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[PATCH, i386]: Fix PR/60909, ICE with -mrdrnd and __builtin_ia32_rdrand32_step

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: Mon, 21 Apr 2014 20:46:00 +0200
Subject: [PATCH, i386]: Fix PR/60909, ICE with -mrdrnd and __builtin_ia32_rdrand32_step
Authentication-results: sourceware.org; auth=none

Hello!

Attached patch fixes PR 60909, where memory operand was used as a
target RTX of a CMOVE insn, leading to unrecognized insn. Similar
problem was found with rdseed insn, where memory operand was used as
an invalid target of a ZERO_EXTEND insn.

Attached patch fixes both occurences.

2014-04-21  Uros Bizjak  <ubizjak@gmail.com>

    PR target/60909
    * config/i386/i386.c (ix86_expand_builtin)
    <case IX86_BUILTIN_RDRAND{16,32,64}_STEP>: Use temporary
    register for target RTX.
    <case IX86_BUILTIN_RDSEED{16,32,64}_STEP>: Ditto.

Testsuite/ChangeLog:

2014-04-21  Uros Bizjak  <ubizjak@gmail.com>

    PR target/60909
    * gcc.target/i386/pr60909-1.c: New test.
    * gcc.target/i386/pr60909-2.c: Ditto.

Patch was committed to mainline and will be committed to other release
branches after 4.9 is released.

Uros.

Attachment: p.diff.txt
Description: Text document

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