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Author SHA1 Message Date
Ben Shi 9e40a32620 [RISCV][test] Add new tests for add optimization in the zba extension 
Reviewed By: asb

Differential Revision: https://reviews.llvm.org/D108188
 2021-08-19 19:59:23 +08:00
Craig Topper a2556bf44c [RISCV] Improve check prefixes in B extension tests. NFC 
-Add Z for the B extension subextensions.
-Don't mention I along with B or its sub extensions.

This is based on comments in D107817.

Differential Revision: https://reviews.llvm.org/D107992
 2021-08-12 12:41:40 -07:00
Ben Shi bb6fddb63c Optimize mul in the zba extension with SH*ADD 
This patch does the following optimization of mul with a constant.

(mul x, 11) -> (SH1ADD (SH2ADD x, x), x)
(mul x, 19) -> (SH1ADD (SH3ADD x, x), x)
(mul x, 13) -> (SH2ADD (SH1ADD x, x), x)
(mul x, 21) -> (SH2ADD (SH2ADD x, x), x)
(mul x, 37) -> (SH2ADD (SH3ADD x, x), x)
(mul x, 25) -> (SH3ADD (SH1ADD x, x), x)
(mul x, 41) -> (SH3ADD (SH2ADD x, x), x)
(mul x, 73) -> (SH3ADD (SH3ADD x, x), x)
(mul x, 27) -> (SH1ADD (SH3ADD x, x), (SH3ADD x, x))
(mul x, 45) -> (SH2ADD (SH3ADD x, x), (SH3ADD x, x))
(mul x, 81) -> (SH3ADD (SH3ADD x, x), (SH3ADD x, x))

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D107065
 2021-07-30 08:36:28 +08:00
Ben Shi 811be79433 [RISCV][test] Add new tests for mul optimization in the zba extension with SH*ADD 
Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D107064
 2021-07-30 08:36:28 +08:00
Ben Shi 264b8e2a20 [RISCV] Optimize mul in the zba extension with SH*ADD 
This patch makes the following optimization, if the
immediate multiplier is not a simm12.

(mul x, (power_of_2 + 2)) => (SH1ADD x, (SLLI x, bits))
(mul x, (power_of_2 + 4)) => (SH2ADD x, (SLLI x, bits))
(mul x, (power_of_2 + 8)) => (SH3ADD x, (SLLI x, bits))

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D106648
 2021-07-29 09:46:41 +08:00
Ben Shi 2a2d83d916 [RISCV][test] Add new tests for mul optimization in the zba extension with SH*ADD 
These test will show the following optimization by future patches.

(mul x, (power_of_2 + 2)) => (SH1ADD x, (SLLI x, bits))
(mul x, (power_of_2 + 4)) => (SH2ADD x, (SLLI x, bits))
(mul x, (power_of_2 + 8)) => (SH3ADD x, (SLLI x, bits))

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D106647
 2021-07-29 09:46:41 +08:00
Ben Shi 9e5c5afc7e [RISCV] Optimize multiplication in the zba extension with SH*ADD 
This patch make the following optimization.

(mul x, 3 * power_of_2) -> (SLLI (SH1ADD x, x), bits)
(mul x, 5 * power_of_2) -> (SLLI (SH2ADD x, x), bits)
(mul x, 9 * power_of_2) -> (SLLI (SH3ADD x, x), bits)

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D105796
 2021-07-22 10:28:41 +08:00
Ben Shi d3738a09fb [RISCV][test] Add tests for mul optimization in the zba extension with SH*ADD 
These tests will show the following optimization by future patches.

(mul x, 11) -> (SH1ADD (SH2ADD x, x), x)
(mul x, 19) -> (SH1ADD (SH3ADD x, x), x)
(mul x, 13) -> (SH2ADD (SH1ADD x, x), x)
(mul x, 21) -> (SH2ADD (SH2ADD x, x), x)
(mul x, 37) -> (SH2ADD (SH3ADD x, x), x)
(mul x, 25) -> (SH3ADD (SH1ADD x, x), x)
(mul x, 41) -> (SH3ADD (SH2ADD x, x), x)
(mul x, 73) -> (SH3ADD (SH3ADD x, x), x)

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D106031
 2021-07-21 10:16:56 +08:00
Ben Shi ed102ce20a [RISCV][test] Add new tests for mul optimization in the zba extension with SH*ADD 
This patch will show the following optimization by future patches.

(mul x imm) -> (SH1ADD x, (SLLI x, bits)) when imm = 2^n + 2.
(mul x imm) -> (SH2ADD x, (SLLI x, bits)) when imm = 2^n + 4.
(mul x imm) -> (SH3ADD x, (SLLI x, bits)) when imm = 2^n + 8.

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D105614
 2021-07-09 09:48:23 +08:00
Ben Shi d934b72809 [RISCV] Optimize add-mul in the zba extension with SH*ADD 
This patch does the following optimization.

Rx + Ry * 18 => (SH1ADD (SH3ADD Rx, Rx), Ry)
Rx + Ry * 20 => (SH2ADD (SH2ADD Rx, Rx), Ry)
Rx + Ry * 24 => (SH3ADD (SH1ADD Rx, Rx), Ry)
Rx + Ry * 36 => (SH2ADD (SH3ADD Rx, Rx), Ry)
Rx + Ry * 40 => (SH3ADD (SH2ADD Rx, Rx), Ry)
Rx + Ry * 72 => (SH3ADD (SH3ADD Rx, Rx), Ry)

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D104588
 2021-06-19 14:33:27 +08:00
Ben Shi 31190738c0 [RISCV][test] Add new tests for add-mul optimization in the zba extension with SH*ADD 
These tests will show the following optimization by future patches.

Rx + Ry * 18  => (SH1ADD (SH3ADD Rx, Rx), Ry)
Rx + Ry * 20  => (SH2ADD (SH2ADD Rx, Rx), Ry)
Rx + Ry * 24  => (SH3ADD (SH1ADD Rx, Rx), Ry)
Rx + Ry * 36  => (SH2ADD (SH3ADD Rx, Rx), Ry)
Rx + Ry * 40  => (SH3ADD (SH2ADD Rx, Rx), Ry)
Rx + Ry * 72  => (SH3ADD (SH3ADD Rx, Rx), Ry)
Rx * (3 << C) => (SLLI (SH1ADD Rx, Rx), C)
Rx * (5 << C) => (SLLI (SH2ADD Rx, Rx), C)
Rx * (9 << C) => (SLLI (SH3ADD Rx, Rx), C)

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D104507
 2021-06-19 14:31:01 +08:00
Ben Shi 0799057181 [RISCV][test] Add new tests of SH*ADD in the zba extension 
These tests will show the following optimization by future patches.

Rx + Ry * 6  => (SH1ADD (SH2ADD Rx, Ry), Ry)
Rx + Ry * 10 => (SH1ADD (SH3ADD Rx, Ry), Ry)
Rx + Ry * 12 => (SH2ADD (SH3ADD Rx, Ry), Ry)

Reviewed By: MaskRay

Differential Revision: https://reviews.llvm.org/D104210
 2021-06-17 07:02:33 +08:00
Craig Topper 728cd5dde7 [RISCV] Rename Zb* extension tests to use lower case 'Z' in file names. 
As discussed in D99009
 2021-03-22 19:17:04 -07:00