https://sourceware.org/bugzilla/show_bug.cgi?id=23013
Bug ID: 23013
Summary: Assembler not recognizing 3-opt dcbt instruction form
on Power systems
Product: binutils
Version: 2.25
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: gas
Assignee: unassigned at sourceware dot org
Reporter: 7mg5 at queensu dot ca
Target Milestone: ---
Description:
When invoked on a simple testcase (test.s) the gas assembler does not recognize
the third operand to this instruction and emits an error.
Steps to Reproduce:
> cat test.s
.set r0,0
.set r10,10
lab_1:
dcbt r0,r10,8
> as test.s
Expected Results:
> as test.s
<no errors>
Actual Results:
> as test.s
test.s: Assembler messages:
test.s:5: Error: junk at end of line: `8'
OS/Harware:
This issue was first encountered in the default assembler installed under SUSE
12 on Power8 hardware, but has also been encountered on Redhat 7.3 (but not
Redhat 7.1) - also Power8.
The original failure was noted using version 2.26.1, but I have been able to
reproduce it with 2.30 as well.
original failing version info:
> as -version
GNU assembler (GNU Binutils; SUSE Linux Enterprise 12) 2.26.1
Copyright (C) 2015 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or later.
This program has absolutely no warranty.
This assembler was configured for a target of `powerpc64le-suse-linux'.
Additional Information:
As of Power5, the dcbt instruction can take a 3 operand form such as
dcbt r0,r1,8
instruction documentation:
https://www.ibm.com/support/knowledgecenter/en/ssw_aix_72/com.ibm.aix.alangref/idalangref_dcbt_instrs.htm
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