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llvm-6502/test/CodeGen/NVPTX
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Jingyue Wu c9f86c1260 [NVPTX] make load on global readonly memory to use ldg 
Summary:
[NVPTX] make load on global readonly memory to use ldg

Summary:
As describe in [1], ld.global.nc may be used to load memory by nvcc when
__restrict__ is used and compiler can detect whether read-only data cache
is safe to use.

This patch will try to check whether ldg is safe to use and use them to
replace ld.global when possible. This change can improve the performance
by 18~29% on affected kernels (ratt*_kernel and rwdot*_kernel) in 
S3D benchmark of shoc [2]. 

Patched by Xuetian Weng. 

[1] http://docs.nvidia.com/cuda/kepler-tuning-guide/#read-only-data-cache
[2] https://github.com/vetter/shoc

Test Plan: test/CodeGen/NVPTX/load-with-non-coherent-cache.ll

Reviewers: jholewinski, jingyue

Subscribers: jholewinski, llvm-commits

Differential Revision: http://reviews.llvm.org/D11314

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@242713 91177308-0d34-0410-b5e6-96231b3b80d8
2015-07-20 21:28:54 +00:00
..
access-non-generic.ll [NVPTX] fix a crash bug in NVPTXFavorNonGenericAddrSpaces 2015-06-09 21:50:32 +00:00
add-128bit.ll Revert revisions r234755, r234759, r234760 2015-04-13 17:47:15 +00:00
addrspacecast-gvar.ll [NVPTX] Handle addrspacecast constant expressions in aggregate initializers 2015-04-28 17:18:30 +00:00
addrspacecast.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
aggr-param.ll
annotations.ll
arg-lowering.ll
arithmetic-fp-sm20.ll
arithmetic-int.ll
atomics.ll
bfe.ll
bug17709.ll
bug21465.ll [NVPTX] run SROA after NVPTXFavorNonGenericAddrSpaces 2015-06-09 00:05:56 +00:00
bug22246.ll
bug22322.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
call-with-alloca-buffer.ll Add NVPTXPeephole pass to reduce unnecessary address cast 2015-06-24 20:20:16 +00:00
callchain.ll
calling-conv.ll
compare-int.ll
constant-vectors.ll
convert-fp.ll
convert-int-sm20.ll
ctlz.ll
ctpop.ll
cttz.ll
div-ri.ll
envreg.ll
extloadv.ll [NVPTX] expand extload/truncstore for vectors of floats 2015-07-01 21:32:42 +00:00
fast-math.ll
fma-assoc.ll
fma-disable.ll
fma.ll
fp16.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
fp-contract.ll
fp-literals.ll
function-align.ll [NVPTXAsmPrinter] do not print .align on function headers 2015-03-12 01:50:30 +00:00
generic-to-nvvm.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
global-ordering.ll
globals_init.ll The constant initialization for globals in NVPTX is generated as an 2015-06-09 16:29:34 +00:00
globals_lowering.ll Force relocation mode to be default, regardless of what is passed to the backend. 2015-06-30 17:18:00 +00:00
gvar-init.ll
half.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
i1-global.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
i1-int-to-fp.ll
i1-param.ll
i8-param.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
imad.ll
implicit-def.ll
inline-asm.ll
intrin-nocapture.ll Reapply 239795 - [InstCombine] Propagate non-null facts to call parameters 2015-06-16 20:24:25 +00:00
intrinsic-old.ll
intrinsics.ll [NVPTX] Added missing test case for llvm.nvvm.sqrt.f NVPTX intrinsic 2015-06-23 18:22:17 +00:00
isspacep.ll
ld-addrspace.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
ld-generic.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
ldparam-v4.ll
ldu-i8.ll
ldu-ldg.ll
ldu-reg-plus-offset.ll
lit.local.cfg
load-sext-i1.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
load-with-non-coherent-cache.ll [NVPTX] make load on global readonly memory to use ldg 2015-07-20 21:28:54 +00:00
local-stack-frame.ll [NVPTX] Move NVPTXPeephole after NVPTXPrologEpilogPass 2015-07-01 20:08:06 +00:00
loop-vectorize.ll [NVPTX] declare no vector registers 2015-07-10 04:31:56 +00:00
lower-aggr-copies.ll Use inbounds GEPs for memcpy and memset lowering 2015-07-17 16:42:33 +00:00
lower-alloca.ll Add NVPTXLowerAlloca pass to convert alloca'ed memory to local address 2015-06-17 22:31:02 +00:00
lower-kernel-ptr-arg.ll [NVPTX] noop when kernel pointers are already global 2015-06-26 22:35:43 +00:00
machine-sink.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
managed.ll
misaligned-vector-ldst.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
module-inline-asm.ll
mulwide.ll
noduplicate-syncthreads.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
nounroll.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
nvcl-param-align.ll
nvvm-reflect.ll Add support for __nvvm_reflect changes in libdevice in CUDA-7.0 2015-03-19 17:05:35 +00:00
param-align.ll
pr13291-i1-store.ll [NVPTX] roll forward r239082 2015-06-04 21:28:26 +00:00
pr16278.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
pr17529.ll
refl1.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
rotate.ll
rsqrt.ll
sched1.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
sched2.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
sext-in-reg.ll
sext-params.ll
shift-parts.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
simple-call.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
sm-version-20.ll
sm-version-21.ll
sm-version-30.ll [NVPTX] Associate a minimum PTX version for each SM architecture 2015-03-30 19:30:55 +00:00
sm-version-32.ll [NVPTX] Associate a minimum PTX version for each SM architecture 2015-03-30 19:30:55 +00:00
sm-version-35.ll [NVPTX] Associate a minimum PTX version for each SM architecture 2015-03-30 19:30:55 +00:00
sm-version-37.ll [NVPTX] Associate a minimum PTX version for each SM architecture 2015-03-30 19:30:55 +00:00
sm-version-50.ll [NVPTX] Associate a minimum PTX version for each SM architecture 2015-03-30 19:30:55 +00:00
sm-version-52.ll [NVPTX] Associate a minimum PTX version for each SM architecture 2015-03-30 19:30:55 +00:00
sm-version-53.ll [NVPTX] Associate a minimum PTX version for each SM architecture 2015-03-30 19:30:55 +00:00
st-addrspace.ll
st-generic.ll
surf-read-cuda.ll [NVPTX] roll forward r239082 2015-06-04 21:28:26 +00:00
surf-read.ll
surf-write-cuda.ll
surf-write.ll
symbol-naming.ll [opaque pointer type] Add textual IR support for explicit type parameter to the call instruction 2015-04-16 23:24:18 +00:00
tex-read-cuda.ll [NVPTX] roll forward r239082 2015-06-04 21:28:26 +00:00
tex-read.ll
texsurf-queries.ll
tuple-literal.ll
vec8.ll
vec-param-load.ll
vector-args.ll
vector-call.ll
vector-compare.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
vector-global.ll
vector-loads.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
vector-return.ll
vector-select.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
vector-stores.ll
weak-global.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
weak-linkage.ll