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| author | Michael Meissner <meissner@linux.vnet.ibm.com> | 2013-07-31 20:04:07 +0000 |
|---|---|---|
| committer | Michael Meissner <meissner@gcc.gnu.org> | 2013-07-31 20:04:07 +0000 |
| commit | d86e633abc4aeb1be6c443b3dc3593629491a838 (patch) | |
| tree | 8fca80180a443821ea64db1f6fcab18e36937b55 /gcc/cgraphunit.c | |
| parent | b26e3fc277ea869668b129563f9276caace5e5d9 (diff) | |
| download | gcc-d86e633abc4aeb1be6c443b3dc3593629491a838.zip gcc-d86e633abc4aeb1be6c443b3dc3593629491a838.tar.gz gcc-d86e633abc4aeb1be6c443b3dc3593629491a838.tar.bz2 | |
predicates.md (fusion_gpr_addis): New predicates to support power8 load fusion.
[gcc]
2013-07-31 Michael Meissner <meissner@linux.vnet.ibm.com>
* config/rs6000/predicates.md (fusion_gpr_addis): New predicates
to support power8 load fusion.
(fusion_gpr_mem_load): Likewise.
* config/rs6000/rs6000-modes.def (PTImode): Update a comment.
* config/rs6000/rs6000-protos.h (fusion_gpr_load_p): New
declarations for power8 load fusion.
(emit_fusion_gpr_load): Likewise.
* config/rs6000/rs6000.c (rs6000_option_override_internal): If
tuning for power8, turn on fusion mode by default. Turn on sign
extending fusion mode if normal fusion mode is on, and we are at
-O2 or -O3.
(fusion_gpr_load_p): New function, return true if we can fuse an
addis instruction with a dependent load to a GPR.
(emit_fusion_gpr_load): Emit the instructions for power8 load
fusion to GPRs.
* config/rs6000/vsx.md (VSX_M2): New iterator for fusion
peepholes.
(VSX load fusion peepholes): New peepholes to fuse together an
addi instruction with a VSX load instruction.
* config/rs6000/rs6000.md (GPR load fusion peepholes): New
peepholes to fuse an addis instruction with a load to a GPR base
register. If we are supporting sign extending fusions, convert
sign extending loads to zero extending loads and add an explicit
sign extension.
[gcc/testsuite]
2013-07-31 Michael Meissner <meissner@linux.vnet.ibm.com>
* gcc.target/powerpc/fusion.c: New file, test power8 fusion
support.
From-SVN: r201385
Diffstat (limited to 'gcc/cgraphunit.c')
0 files changed, 0 insertions, 0 deletions