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Revision tags: llvmorg-21-init, llvmorg-19.1.7, llvmorg-19.1.6, llvmorg-19.1.5, llvmorg-19.1.4 |
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9122c523 |
| 15-Nov-2024 |
Pengcheng Wang <wangpengcheng.pp@bytedance.com> |
[RISCV] Enable bidirectional scheduling and tracking register pressure (#115445)
This is based on other targets like PPC/AArch64 and some experiments.
This PR will only enable bidirectional schedu
[RISCV] Enable bidirectional scheduling and tracking register pressure (#115445)
This is based on other targets like PPC/AArch64 and some experiments.
This PR will only enable bidirectional scheduling and tracking register
pressure.
Disclaimer: I haven't tested it on many cores, maybe we should make
some options being features. I believe downstreams must have tried
this before, so feedbacks are welcome.
show more ...
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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, llvmorg-18.1.4, 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 |
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| #
4830fa18 |
| 22-Oct-2022 |
Craig Topper <craig.topper@sifive.com> |
[RISCV] Make sure we always call tryShrinkShlLogicImm for ISD:AND during isel.
There was an early out that prevented us from calling this for
(and (sext_inreg (shl X, C1), i32), C2).
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Revision tags: 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, 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, 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 |
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| #
70f50114 |
| 23-Sep-2021 |
Craig Topper <craig.topper@sifive.com> |
[RISCV] Add another isel optimization for (and (shl x, c2), c1)
Turn (and (shl x, c2), c1) -> (slli (srli x, c3-c2), c3) if c1 is a
shifted mask with no leading zeros and c3 trailing zeros where c3
[RISCV] Add another isel optimization for (and (shl x, c2), c1)
Turn (and (shl x, c2), c1) -> (slli (srli x, c3-c2), c3) if c1 is a
shifted mask with no leading zeros and c3 trailing zeros where c3
is greater than c2.
show more ...
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| #
8811227a |
| 23-Sep-2021 |
Craig Topper <craig.topper@sifive.com> |
[RISCV] Add more tests for (and (shl x, C2), C1) that can be improved by using a pair of shifts. NFC
These tests have C1 as a shifted mask having no leading zeros and
C3 trailing zeros. If C3 is mor
[RISCV] Add more tests for (and (shl x, C2), C1) that can be improved by using a pair of shifts. NFC
These tests have C1 as a shifted mask having no leading zeros and
C3 trailing zeros. If C3 is more than C2, we can select this as
(slli (srli x, C3-C2), C3).
show more ...
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| #
4a69551d |
| 23-Sep-2021 |
Craig Topper <craig.topper@sifive.com> |
[RISCV] Add more isel optimizations for (and (shr x, c2), c1).
Turn (and (shr x, c2), c1) -> (slli (srli x, c2+c3), c3) if c1 is a
shifted mask with c2 leading zeros and c3 trailing zeros.
When the
[RISCV] Add more isel optimizations for (and (shr x, c2), c1).
Turn (and (shr x, c2), c1) -> (slli (srli x, c2+c3), c3) if c1 is a
shifted mask with c2 leading zeros and c3 trailing zeros.
When the leading zeros is C2+32 we can use SRLIW in place of SRLI.
show more ...
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| #
19734ae6 |
| 23-Sep-2021 |
Craig Topper <craig.topper@sifive.com> |
[RISCV] Add more tests for (and (srl x, C2), C1) that can be improved by using a pair of shifts. NFC
These tests have C1 as a shifted mask having C2 leading zeros and some
number of trailing zeros,
[RISCV] Add more tests for (and (srl x, C2), C1) that can be improved by using a pair of shifts. NFC
These tests have C1 as a shifted mask having C2 leading zeros and some
number of trailing zeros, C3. We can select this as
(slli (srli x, C2+C3), C3) or (slli (srliw x, C2+C3), C3).
show more ...
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