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* [Bug target/55302] New: [SH] Add support for logical ops with GBR mems
@ 2012-11-13 0:18 olegendo at gcc dot gnu.org
2015-02-08 11:44 ` [Bug target/55302] " olegendo at gcc dot gnu.org
0 siblings, 1 reply; 2+ messages in thread
From: olegendo at gcc dot gnu.org @ 2012-11-13 0:18 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55302
Bug #: 55302
Summary: [SH] Add support for logical ops with GBR mems
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: target
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: olegendo@gcc.gnu.org
Target: sh*-*-*
Since now GCC supports GBR based mem refs through the __builtin_thread_pointer
function (PR 54760), support for logical operations on QImode GBR mem refs
could be added. The insns in question are:
and.b #imm,@(r0,gbr)
or.b #imm,@(r0,gbr)
tst.b #imm,@(r0,gbr)
xor.b #imm,@(r0,gbr)
Although the insns are slower than using separate loads/stores and operation
insn sequences, the resulting code can be potentially more compact. It might
be beneficial to enable these insns when optimizing for size.
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2012-11-13 0:18 [Bug target/55302] New: [SH] Add support for logical ops with GBR mems olegendo at gcc dot gnu.org
2015-02-08 11:44 ` [Bug target/55302] " olegendo at gcc dot gnu.org
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