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x64: Add shuffle specialization for palignr (#5999)

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* x64: Add `shuffle` specialization for `palignr`

This commit adds specializations for the `palignr` instruction to the
x64 backend to specialize some more patterns of byte shuffles.

* Fix tests
This commit is contained in:
Alex Crichton
2023-03-13 16:01:24 -05:00
committed by GitHub
parent bba49646c3
commit e2a6fe99c2
6 changed files with 218 additions and 18 deletions
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16
cranelift/filetests/filetests/runtests/simd-shuffle.clif
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@@ -73,7 +73,7 @@ block0(v0: i32x4, v1: i32x4):
v5 = bitcast.i32x4 little v4
return v5
}
; run: %pshufd_0022([1 2 3 4], [5 6 7 8]) == [4 2 3 1]
; run: %pshufd_3120([1 2 3 4], [5 6 7 8]) == [4 2 3 1]
function %pshufd_7546(i32x4, i32x4) -> i32x4 {
block0(v0: i32x4, v1: i32x4):
@@ -83,7 +83,7 @@ block0(v0: i32x4, v1: i32x4):
v5 = bitcast.i32x4 little v4
return v5
}
; run: %pshufd_0022([1 2 3 4], [5 6 7 8]) == [8 6 5 7]
; run: %pshufd_7546([1 2 3 4], [5 6 7 8]) == [8 6 5 7]
function %not_pshufd(i32x4, i32x4) -> i32x4 {
block0(v0: i32x4, v1: i32x4):
@@ -93,7 +93,17 @@ block0(v0: i32x4, v1: i32x4):
v5 = bitcast.i32x4 little v4
return v5
}
; run: %pshufd_0022([1 2 3 4], [5 6 7 8]) == [3 4 5 6]
; run: %not_pshufd([1 2 3 4], [5 6 7 8]) == [3 4 5 6]
function %not_pshufd2(i32x4, i32x4) -> i32x4 {
block0(v0: i32x4, v1: i32x4):
v2 = bitcast.i8x16 little v0
v3 = bitcast.i8x16 little v1
v4 = shuffle v2, v3, [8 9 10 11 12 13 14 15 20 21 22 23 20 21 22 23]
v5 = bitcast.i32x4 little v4
return v5
}
; run: %not_pshufd2([1 2 3 4], [5 6 7 8]) == [3 4 6 6]
function %punpckldq(i32x4, i32x4) -> i32x4 {
block0(v0: i32x4, v1: i32x4):