Consider the following test case on the ARC .
.extCoreRegister roshortcutextcore, 38, r, can_shortcut
.extCoreRegister rwshortcutextcore, 39, r|w, can_shortcut
.extCoreRegister wshortcutextcore , 40, w, can_shortcut
.extCoreRegister ronoshortcutextcore, 41, r, cannot_shortcut
.extCoreRegister wonoshortcutextcore , 42, w,cannot_shortcut
.extCoreRegister rwnoshortcutextcore , 43, r|w, cannot_shortcut
extCoreTest:
add r0, roshortcutextcore, r1
ld rwshortcutextcore, [r2]
add r0,rwshortcutextcore,r1
;; No warning about shortcutting given.
ld rwnoshortcutextcore, [r3]
add r0, rwnoshortcutextcore,r1 ;; GAS ought to give a warning here.
--
Summary: GAS does not give enough warnings about wrong usage of
non shortcuttable registers.
Product: binutils
Version: 2.15
Status: NEW
Severity: normal
Priority: P2
Component: gas
AssignedTo: unassigned at sources dot redhat dot com
ReportedBy: ramana dot radhakrishnan at codito dot com
CC: bug-binutils at gnu dot org,nickc at redhat dot com
GCC build triplet: i686-linux
GCC host triplet: i686-linux
GCC target triplet: arc-elf32
http://sources.redhat.com/bugzilla/show_bug.cgi?id=709
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