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For Cylone, the instruction "movi.2d vD, #0" is executed incorrectly in some rare
circumstances. Work around the issue conservatively by avoiding the instruction entirely.
This patch changes CodeGen so that problematic instructions are never
generated, and the AsmParser so that an equivalent instruction is used (with a
warning).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@320965 91177308-0d34-0410-b5e6-96231b3b80d8
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Fix formatting by adding a missing blank line to test new network setup.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@320760 91177308-0d34-0410-b5e6-96231b3b80d8
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Note that cyclone itself doesn't fuse, but newer apple chips do and we
are using cyclone as the default when targeting apple OSes.
The current code also does not capture all fusion patterns of apple CPUs
yet; I am still looking for ways to refactor the code nicely to extend
it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@316036 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@314105 91177308-0d34-0410-b5e6-96231b3b80d8
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Add the missing hardware features the ProcA55 and ProcA75 feature.
These are already enabled via the target parser, but I had missed
them in the backend.
Differential Revision: https://reviews.llvm.org/D37974
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@313535 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
STRQro* instructions are slower than the alternative ADD/STRQui expanded
instructions on Falkor, so avoid generating them unless we're optimizing
for code size.
Reviewers: t.p.northover, mcrosier
Subscribers: aemerson, rengolin, javed.absar, kristof.beyls, llvm-commits
Differential Revision: https://reviews.llvm.org/D37020
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@311931 91177308-0d34-0410-b5e6-96231b3b80d8
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This patch introduces support for Cortex-A75 and Cortex-A55, Arm's
latest big.LITTLE A-class cores. They implement the ARMv8.2-A
architecture, including the cryptography and RAS extensions, plus
the optional dot product extension. They also implement the RCpc
AArch64 extension from ARMv8.3-A.
Cortex-A75:
https://developer.arm.com/products/processors/cortex-a/cortex-a75
Cortex-A55:
https://developer.arm.com/products/processors/cortex-a/cortex-a55
Differential Revision: https://reviews.llvm.org/D36667
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@311316 91177308-0d34-0410-b5e6-96231b3b80d8
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Added assembler and disassembler support for the new Release
Consistent processor consistent instructions, introduced with ARM
v8.3-A for AArch64.
Differential Revision: https://reviews.llvm.org/D36522
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310575 91177308-0d34-0410-b5e6-96231b3b80d8
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The beta ARMv8.3 ISA specifications have been released for AArch64
and AArch32, these can be found at:
https://developer.arm.com/products/architecture/a-profile/exploration-tools
An introduction to this architecture update can be found at:
https://community.arm.com/processors/b/blog/posts/armv8-a-architecture-2016-additions
This patch is the first in a series which will add ARM v8.3-A support
in LLVM and Clang. It adds the necessary changes that create targets
for both the ARM and AArch64 backends.
Differential Revision: https://reviews.llvm.org/D36514
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310561 91177308-0d34-0410-b5e6-96231b3b80d8
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Dot product is an optional ARMv8.2a extension, see also the public architecture
specification here:
https://developer.arm.com/products/architecture/a-profile/exploration-tools.
This patch adds AArch64 assembler support for these dot product instructions.
Differential Revision: https://reviews.llvm.org/D36515
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@310480 91177308-0d34-0410-b5e6-96231b3b80d8
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Add fusion of AES operations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@308388 91177308-0d34-0410-b5e6-96231b3b80d8
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The feature will be used properly once assembler/disassembler support
begins to land.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@307917 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
Scheduling AESE/AESMC and AESD/AESIMC instruction pairs back-to-back
gives a double digit speedup on benchmarks using those instructions on
Cortex-A processors. In GCC, this optimization is part of the generic
processor model as well.
This change should not have a major performance impact on processors
that do not optimize AES instruction pairs, although I only had access
to Cortex-A processors for benchmarking.
Reviewers: rengolin, kristof.beyls, javed.absar, evandro, silviu.baranga, MatzeB, mcrosier, joelkevinjones, joel_k_jones, bmakam, t.p.northover
Reviewed By: evandro
Subscribers: sbaranga, aemerson, llvm-commits
Differential Revision: https://reviews.llvm.org/D33836
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@305457 91177308-0d34-0410-b5e6-96231b3b80d8
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It improves performance on Cortex-A53.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@304307 91177308-0d34-0410-b5e6-96231b3b80d8
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It improves performance on Cortex-A73.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@304304 91177308-0d34-0410-b5e6-96231b3b80d8
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This patch enables fusing dependent AESE/AESMC and AESD/AESIMC
instruction pairs on Cortex-A72, as recommended in the Software
Optimization Guide, section 4.10.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@303073 91177308-0d34-0410-b5e6-96231b3b80d8
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That's only a required extension as of v8.1a.
Remove it from the "generic" CPU as well: it should only support the
base ISA (and binutils agrees).
Also unify the MC tests into crc.s and arm64-crc32.s
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@302077 91177308-0d34-0410-b5e6-96231b3b80d8
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So if FP is disabled, crypto should also be disabled.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@299531 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
This feature enables folding of logical shift operations of up to 3 places into addressing mode on Kryo and Falkor that have a fastpath LSL.
Reviewers: mcrosier, rengolin, t.p.northover
Subscribers: junbuml, gberry, llvm-commits, aemerson
Differential Revision: https://reviews.llvm.org/D31113
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@299240 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
Similar to the ARM target in https://reviews.llvm.org/rL298380, this
patch adds identical infrastructure for disabling negative immediate
conversions, and converts the existing aliases to the new infrastucture.
Reviewers: rengolin, javed.absar, olista01, SjoerdMeijer, samparker
Reviewed By: samparker
Subscribers: samparker, aemerson, llvm-commits
Differential Revision: https://reviews.llvm.org/D31243
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@298908 91177308-0d34-0410-b5e6-96231b3b80d8
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Broadcom Vulcan is now Cavium ThunderX2T99.
LLVM Bugzilla: http://bugs.llvm.org/show_bug.cgi?id=32113
Minor fixes for the alignments of loops and functions for
ThunderX T81/T83/T88 (better performance).
Patch was tested with SpecCPU2006.
Patch by Stefan Teleman
Differential Revision: https://reviews.llvm.org/D30510
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@297190 91177308-0d34-0410-b5e6-96231b3b80d8
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This set of patches adds support for Cavium ThunderX ARM64 processors:
* ThunderX
* ThunderX T81
* ThunderX T83
* ThunderX T88
Patch by Stefan Teleman
Differential Revision: https://reviews.llvm.org/D28891
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295475 91177308-0d34-0410-b5e6-96231b3b80d8
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This feature enables the fusion of such operations on Cortex A57, as
recommended in its Software Optimisation Guide, sections 4.14 and 4.15.
Differential revision: https://reviews.llvm.org/D28698
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@293739 91177308-0d34-0410-b5e6-96231b3b80d8
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This feature enables the fusion of such operations on Cortex A57, as
recommended in its Software Optimisation Guide, section 4.13, and on Exynos
M1.
Differential revision: https://reviews.llvm.org/D28491
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@293738 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292959 91177308-0d34-0410-b5e6-96231b3b80d8
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In order to follow the pattern of the existing 'slow-misaligned-128store'
option, rename the option 'no-quad-ldst-pairs' to 'slow-paired-128'.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292954 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
Adds a RegisterBank tablegen class that can be used to declare the register
banks and an associated tablegen pass to generate the necessary code.
Changes since first commit attempt:
* Added missing guards
* Added more missing guards
* Found and fixed a use-after-free bug involving Twine locals
Reviewers: t.p.northover, ab, rovka, qcolombet
Reviewed By: qcolombet
Subscribers: aditya_nandakumar, rengolin, kristof.beyls, vkalintiris, mgorny, dberris, llvm-commits, rovka
Differential Revision: https://reviews.llvm.org/D27338
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292478 91177308-0d34-0410-b5e6-96231b3b80d8
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More missing guards. My build didn't notice it due to a stale file left over
from a Global ISel build.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292369 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
Adds a RegisterBank tablegen class that can be used to declare the register
banks and an associated tablegen pass to generate the necessary code.
Changes since last commit:
The new tablegen pass is now correctly guarded by LLVM_BUILD_GLOBAL_ISEL and
this should fix the buildbots however it may not be the whole fix. The previous
buildbot failures suggest there may be a memory bug lurking that I'm unable to
reproduce (including when using asan) or spot in the source. If they re-occur
on this commit then I'll need assistance from the bot owners to track it down.
Reviewers: t.p.northover, ab, rovka, qcolombet
Reviewed By: qcolombet
Subscribers: aditya_nandakumar, rengolin, kristof.beyls, vkalintiris, mgorny, dberris, llvm-commits, rovka
Differential Revision: https://reviews.llvm.org/D27338
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292367 91177308-0d34-0410-b5e6-96231b3b80d8
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Falkor only partially implements the ARMv8.1a extensions, so this patch
refactors the support for the SQRDML[A|S]H instruction into a separate
feature.
Differential Revision: https://reviews.llvm.org/D28681
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292142 91177308-0d34-0410-b5e6-96231b3b80d8
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Information'...
Several buildbots encountered a crash in tablegen when building this commit.
Reverting while I investigate the cause.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292136 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
Adds a RegisterBank tablegen class that can be used to declare the register
banks and an associated tablegen pass to generate the necessary code.
Reviewers: t.p.northover, ab, rovka, qcolombet
Subscribers: aditya_nandakumar, rengolin, kristof.beyls, vkalintiris, mgorny, dberris, llvm-commits, rovka
Differential Revision: https://reviews.llvm.org/D27338
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292132 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@291010 91177308-0d34-0410-b5e6-96231b3b80d8
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This feature now gates such stores after r289845. Thus the Exynos
processors now need this feature.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@289898 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@289613 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
This is preparation for ThunderX processors that have Large
System Extension (LSE) atomic instructions, but not the
other instructions introduced by V8.1a.
This will mimic changes to GCC as described here:
https://gcc.gnu.org/ml/gcc-patches/2015-06/msg00388.html
LSE instructions are: LD/ST<op>, CAS*, SWP
Reviewers: t.p.northover, echristo, jmolloy, rengolin
Subscribers: aemerson, mehdi_amini
Differential Revision: https://reviews.llvm.org/D26621
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@288279 91177308-0d34-0410-b5e6-96231b3b80d8
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Differential Revision: https://reviews.llvm.org/D26972
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@288194 91177308-0d34-0410-b5e6-96231b3b80d8
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Differential Revision: https://reviews.llvm.org/D26673
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@287036 91177308-0d34-0410-b5e6-96231b3b80d8
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This optimization merges adjacent zero stores into a wider store.
e.g.,
strh wzr, [x0]
strh wzr, [x0, #2]
; becomes
str wzr, [x0]
e.g.,
str wzr, [x0]
str wzr, [x0, #4]
; becomes
str xzr, [x0]
Previously, this was only enabled for Kryo and Cortex-A57.
Differential Revision: https://reviews.llvm.org/D26396
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@286592 91177308-0d34-0410-b5e6-96231b3b80d8
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This feature has been disabled for some time now, so remove cruft.
Differential Revision: https://reviews.llvm.org/D26248
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@286110 91177308-0d34-0410-b5e6-96231b3b80d8
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Since Exynos-M2 improved the FP square root unit a bit over the one in
Exynos-M1, it does not benefit from using the Newton series for such
operations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285246 91177308-0d34-0410-b5e6-96231b3b80d8
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Add support for estimating the square root or its reciprocal and division or
reciprocal using the combiner generic Newton series.
Differential revision: https://reviews.llvm.org/D25291
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@284986 91177308-0d34-0410-b5e6-96231b3b80d8
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AArch64InstrInfo::shouldScheduleAdjacent() determines whether two
instruction can benefit from macroop fusion on apple CPUs. The list
turned out to be incomplete:
- the "rr" variants of the instructions were missing
- even the "rs" variants can have shift value == 0 and behave like the
"rr" variants
This also splits the MacropFusion target feature into
ArithmeticBccFusion and ArithmeticCbzFusion.
Differential Revision: https://reviews.llvm.org/D25142
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@283243 91177308-0d34-0410-b5e6-96231b3b80d8
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This reverts part of commit 119e358d9635c8d1f3e7aee67e3ea3b8a62f8db6 by
removing FeatureUseRSqrt et al per request by Eric Christopher
<echristo@gmail.com> (v. http://bit.ly/2cmz6kW).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282001 91177308-0d34-0410-b5e6-96231b3b80d8
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Enable zero cycle zeroing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@279648 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@277364 91177308-0d34-0410-b5e6-96231b3b80d8
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Adding PredictableSelectIsExpensive for Vulcan
Differential Revision: https://reviews.llvm.org/D22448
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275978 91177308-0d34-0410-b5e6-96231b3b80d8
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Enable use-postra-scheduler. (NFC)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275457 91177308-0d34-0410-b5e6-96231b3b80d8
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This feature uses immediate #0 to zero a register.
Differential Revision: http://reviews.llvm.org/D19985
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275143 91177308-0d34-0410-b5e6-96231b3b80d8
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