llvm-project

Commit Graph

Author	SHA1	Message	Date
Craig Topper	1d26bbcf9b	[RISCV] Return false from isShuffleMaskLegal except for splats. We don't support any other shuffles currently. This changes the bswap/bitreverse tests that check for this in their expansion code. Previously we expanded a byte swapping shuffle through memory. Now we're scalarizing and doing bit operations on scalars to swap bytes. In the future we can probably use vrgather.vx to do a byte swap shuffle.	2021-03-11 20:02:49 -08:00
Craig Topper	2ac7a3cff1	[RISCV] Add test cases for fixed vector bitreverse, bswap, ctlz, cttz, and ctpop. Codegen needs to be improved, but I wanted to check for crashes.	2021-03-11 15:56:32 -08:00

Author

SHA1

Message

Date

Craig Topper

1d26bbcf9b

[RISCV] Return false from isShuffleMaskLegal except for splats.

We don't support any other shuffles currently.

This changes the bswap/bitreverse tests that check for this in
their expansion code. Previously we expanded a byte swapping
shuffle through memory. Now we're scalarizing and doing bit
operations on scalars to swap bytes.

In the future we can probably use vrgather.vx to do a byte swap
shuffle.

2021-03-11 20:02:49 -08:00

Craig Topper

2ac7a3cff1

[RISCV] Add test cases for fixed vector bitreverse, bswap, ctlz, cttz, and ctpop.

Codegen needs to be improved, but I wanted to check for crashes.

2021-03-11 15:56:32 -08:00

2 Commits