|
Revision tags: llvmorg-21-init, llvmorg-19.1.7, llvmorg-19.1.6, llvmorg-19.1.5, llvmorg-19.1.4 |
|
| #
38fffa63 |
| 06-Nov-2024 |
Paul Walker <paul.walker@arm.com> |
[LLVM][IR] Use splat syntax when printing Constant[Data]Vector. (#112548)
|
|
Revision tags: llvmorg-19.1.3, llvmorg-19.1.2, llvmorg-19.1.1, llvmorg-19.1.0, llvmorg-19.1.0-rc4, llvmorg-19.1.0-rc3, llvmorg-19.1.0-rc2, llvmorg-19.1.0-rc1, llvmorg-20-init, llvmorg-18.1.8, llvmorg-18.1.7, llvmorg-18.1.6, llvmorg-18.1.5 |
|
| #
d9a5aa8e |
| 17-Apr-2024 |
Nikita Popov <npopov@redhat.com> |
[PatternMatch] Do not accept undef elements in m_AllOnes() and friends (#88217)
Change all the cstval_pred_ty based PatternMatch helpers (things like
m_AllOnes and m_Zero) to only allow poison elem
[PatternMatch] Do not accept undef elements in m_AllOnes() and friends (#88217)
Change all the cstval_pred_ty based PatternMatch helpers (things like
m_AllOnes and m_Zero) to only allow poison elements inside vector
splats, not undef elements.
Historically, we used to represent non-demanded elements in vectors
using undef. Nowadays, we use poison instead. As such, I believe that
support for undef in vector splats is no longer useful.
At the same time, while poison splat elements are pretty much always
safe to ignore, this is not generally the case for undef elements. We
have existing miscompiles in our tests due to this (see the
masked-merge-*.ll tests changed here) and it's easy to miss such cases
in the future, now that we write tests using poison instead of undef
elements.
I think overall, keeping support for undef elements no longer makes
sense, and we should drop it. Once this is done consistently, I think we
may also consider allowing poison in m_APInt by default, as doing that
change is much less risky than doing the same with undef.
This change involves a substantial amount of test changes. For most
tests, I've just replaced undef with poison, as I don't think there is
value in retaining both. For some tests (where the distinction between
undef and poison is important), I've duplicated tests.
show more ...
|
|
Revision tags: llvmorg-18.1.4 |
|
| #
b1094776 |
| 11-Apr-2024 |
Yingwei Zheng <dtcxzyw2333@gmail.com> |
[InstCombine] Infer nsw/nuw for trunc (#87910)
This patch adds support for inferring trunc's nsw/nuw flags.
|
|
Revision tags: llvmorg-18.1.3, llvmorg-18.1.2, llvmorg-18.1.1, llvmorg-18.1.0, llvmorg-18.1.0-rc4, llvmorg-18.1.0-rc3, llvmorg-18.1.0-rc2, llvmorg-18.1.0-rc1, llvmorg-19-init, llvmorg-17.0.6, llvmorg-17.0.5, llvmorg-17.0.4, llvmorg-17.0.3, llvmorg-17.0.2, llvmorg-17.0.1, llvmorg-17.0.0, llvmorg-17.0.0-rc4, llvmorg-17.0.0-rc3, llvmorg-17.0.0-rc2, llvmorg-17.0.0-rc1, llvmorg-18-init, llvmorg-16.0.6, llvmorg-16.0.5, llvmorg-16.0.4, llvmorg-16.0.3, llvmorg-16.0.2, llvmorg-16.0.1, llvmorg-16.0.0, llvmorg-16.0.0-rc4, llvmorg-16.0.0-rc3, llvmorg-16.0.0-rc2, llvmorg-16.0.0-rc1, llvmorg-17-init, llvmorg-15.0.7, llvmorg-15.0.6, llvmorg-15.0.5, llvmorg-15.0.4, llvmorg-15.0.3, working, llvmorg-15.0.2, llvmorg-15.0.1, llvmorg-15.0.0, llvmorg-15.0.0-rc3, llvmorg-15.0.0-rc2, llvmorg-15.0.0-rc1, llvmorg-16-init, llvmorg-14.0.6, llvmorg-14.0.5 |
|
| #
793bb704 |
| 25-May-2022 |
Chenbing Zheng <Chenbing.Zheng@streamcomputing.com> |
[InstCombine] add test for trunc-shl-trunc ; NFC
|
|
Revision tags: llvmorg-14.0.4, llvmorg-14.0.3, llvmorg-14.0.2, llvmorg-14.0.1, llvmorg-14.0.0, llvmorg-14.0.0-rc4, llvmorg-14.0.0-rc3, llvmorg-14.0.0-rc2, llvmorg-14.0.0-rc1 |
|
| #
acdc419c |
| 04-Feb-2022 |
Bjorn Pettersson <bjorn.a.pettersson@ericsson.com> |
[test] Use -passes=instcombine instead of -instcombine in lots of tests. NFC
Another step moving away from the deprecated syntax of specifying
pass pipeline in opt.
Differential Revision: https://r
[test] Use -passes=instcombine instead of -instcombine in lots of tests. NFC
Another step moving away from the deprecated syntax of specifying
pass pipeline in opt.
Differential Revision: https://reviews.llvm.org/D119081
show more ...
|
|
Revision tags: llvmorg-15-init, llvmorg-13.0.1, llvmorg-13.0.1-rc3, llvmorg-13.0.1-rc2, llvmorg-13.0.1-rc1, llvmorg-13.0.0, llvmorg-13.0.0-rc4, llvmorg-13.0.0-rc3, llvmorg-13.0.0-rc2, llvmorg-13.0.0-rc1, llvmorg-14-init, llvmorg-12.0.1, llvmorg-12.0.1-rc4, llvmorg-12.0.1-rc3, llvmorg-12.0.1-rc2, llvmorg-12.0.1-rc1, llvmorg-12.0.0, llvmorg-12.0.0-rc5, llvmorg-12.0.0-rc4, llvmorg-12.0.0-rc3, llvmorg-12.0.0-rc2, llvmorg-11.1.0, llvmorg-11.1.0-rc3, llvmorg-12.0.0-rc1, llvmorg-13-init, llvmorg-11.1.0-rc2, llvmorg-11.1.0-rc1, llvmorg-11.0.1, llvmorg-11.0.1-rc2, llvmorg-11.0.1-rc1 |
|
| #
9c3138bd |
| 13-Oct-2020 |
Simon Pilgrim <llvm-dev@redking.me.uk> |
[InstCombine] visitTrunc - pass through undefs for trunc(shift(trunc/ext(x),c)) patterns
Based on the recent patches D88475 and D88429 where we are losing undef values due to extension/comparisons.
[InstCombine] visitTrunc - pass through undefs for trunc(shift(trunc/ext(x),c)) patterns
Based on the recent patches D88475 and D88429 where we are losing undef values due to extension/comparisons.
I've added a Constant::mergeUndefsWith method that merges the undef scalar/elements from another Constant into a specific Constant.
Differential Revision: https://reviews.llvm.org/D88687
show more ...
|
|
Revision tags: llvmorg-11.0.0, llvmorg-11.0.0-rc6, llvmorg-11.0.0-rc5 |
|
| #
0cf48a70 |
| 29-Sep-2020 |
Simon Pilgrim <llvm-dev@redking.me.uk> |
[InstCombine] visitTrunc - trunc (*shr (trunc A), C) --> trunc(*shr A, C)
Attempt to fold trunc (*shr (trunc A), C) --> trunc(*shr A, C) iff the shift amount if small enough that all zero/sign bits
[InstCombine] visitTrunc - trunc (*shr (trunc A), C) --> trunc(*shr A, C)
Attempt to fold trunc (*shr (trunc A), C) --> trunc(*shr A, C) iff the shift amount if small enough that all zero/sign bits created by the shift are removed by the last trunc.
Helps fix the regressions encountered in D88316.
I've tweaked a couple of shift values as suggested by @lebedev.ri to ensure we have coverage of shift values close (above/below) to the max limit.
Differential Revision: https://reviews.llvm.org/D88429
show more ...
|
| #
e5f047f2 |
| 29-Sep-2020 |
Simon Pilgrim <llvm-dev@redking.me.uk> |
[InstCombine] Fix the outofrange tests and add exact shift tests for D88429
|
| #
d047bb1c |
| 28-Sep-2020 |
Simon Pilgrim <llvm-dev@redking.me.uk> |
[InstCombine] Add trunc(shr(trunc(x),c)) non-uniform vector tests
|
| #
ad4f11a9 |
| 28-Sep-2020 |
Simon Pilgrim <llvm-dev@redking.me.uk> |
[InstCombine] Add basic trunc(shr(trunc(x),c)) tests
Helps improve the minor regressions noticed on D88316
|