http://sourceware.org/bugzilla/show_bug.cgi?id=12206
Summary: Unified syntax does not allow certain simplified
source statements.
Product: binutils
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: gas
AssignedTo: unassig...@sources.redhat.com
ReportedBy: aa...@olympus.net
When the target is an ARM v7M Cortex-M3 core (Thumb mode only) and unified
syntax is specified (.syntax unified), statements of the form
ADD Rd,Rn,Rm,<shift>
cannot be specified in the following simplified form if Rd equals Rn.
ADD Rn, Rm,<shift>
For example ADD R0,R0,R1,LSR #10 cannot be simplified to ADD R0,R1,LSR #10.
ARM document DDI0403D does not prohibit the simplifed form if <shift> is
specified even though only the T3 encoding is allowed.
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