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11 Commits

Author SHA1 Message Date
Sumanth Gundapaneni
aaf2d078b6
[Hexagon] Clean up redundant transfer instructions. (#82663) 
This patch adds a Hexagon specific backend pass that cleans up redundant
transfers after register allocation.
 2024-02-22 17:31:37 -06:00
Konstantina Mitropoulou
2c5d1b5ab7 [DAGCombiner] Reassociate the operands from (OR (OR(CMP1, CMP2)), CMP3) to (OR (OR(CMP1, CMP3)), CMP2) 
This happens when CMP1 and CMP3 have the same predicate (or CMP2 and CMP3 have
the same predicate).

This helps optimizations such as the fololowing one:
CMP(A,C)||CMP(B,C) => CMP(MIN/MAX(A,B), C)
CMP(A,C)&&CMP(B,C) => CMP(MIN/MAX(A,B), C)

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D156215
 2023-08-08 20:08:01 -07:00
Krzysztof Parzyszek
5ad9adb9b0 [Hexagon] Add missing patterns for boolean [v]selects 
Fixes https://github.com/llvm/llvm-project/issues/59663
 2023-06-17 17:15:07 -07:00
Krzysztof Parzyszek
833438eef0 [Hexagon] Handle all compares of i1 and vNi1 
Fixes https://github.com/llvm/llvm-project/issues/63363
 2023-06-17 16:31:21 -07:00
Krzysztof Parzyszek
d1c3ec61d6 [Hexagon] Add missing patterns for truncate to vNi1 2023-06-17 16:31:21 -07:00
Nikita Popov
a96f691985 [Hexagon] Convert some tests to opaque pointers (NFC) 2022-12-19 12:53:32 +01:00
Ikhlas Ajbar
4bb6e220a0 [Hexagon] Add missing patterns for select 
Fixes https://github.com/llvm/llvm-project/issues/59077.
 2022-11-22 12:20:38 -08:00
Krzysztof Parzyszek
ea6693d4c8 [Hexagon] Add missing patterns for mulhs/mulhu 2022-11-18 08:13:57 -08:00
Krzysztof Parzyszek
9c5ed8d567 [Hexagon] Add patterns to load i1 
This fixes https://llvm.org/PR50853
 2021-06-28 12:17:30 -05:00
Krzysztof Parzyszek
06234f758e [Hexagon] Improve lowering of returns of i1 
Emit explicit any-extend to avoid weird tstbit sequences.
 2021-04-22 16:47:52 -05:00
Krzysztof Parzyszek
ab9521aaeb [Hexagon] Use 'vnot' instead of 'not' in patterns with vectors 
'not' expands to checking for an xor with a -1 constant. Since
this looks for a ConstantSDNode it will never match for a vector.

Co-authored-by: Craig Topper <craig.topper@sifive.com>

Differential Revision: https://reviews.llvm.org/D100687
 2021-04-22 15:36:20 -05:00