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Implement iabs in ISLE (AArch64) (#4399)

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* Implement `iabs` in ISLE (AArch64)

Converts the existing implementation of `iabs` for AArch64 into ISLE,
and fixes support for `iabs` on scalar values.

Copyright (c) 2022 Arm Limited.

* Improve scalar `iabs` implementation.

Also introduces `CSNeg` instruction.

Copyright (c) 2022 Arm Limited
This commit is contained in:
Damian Heaton
2022-07-18 19:12:34 +01:00
committed by GitHub
parent db7f9ccd2b
commit d792646677
8 changed files with 208 additions and 32 deletions
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4
cranelift/filetests/filetests/runtests/iabs.clif
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@@ -1,5 +1,7 @@
test interpret
; aarch64 & x86_64 only support vector iabs
test run
target aarch64
; x86_64 only supports vector iabs
function %iabs_i8(i8) -> i8 {
block0(v0: i8):