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x64: Migrate fabs and bnot vector operations to ISLE

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This was my first attempt at transitioning code to ISLE to originally
fix #3327 but that fix has since landed on `main`, so this is instead
now just porting a few operations to ISLE.

Closes #3336
This commit is contained in:
Alex Crichton
2021-11-05 11:15:46 -07:00
parent 5d5629de60
commit 92394566fc
8 changed files with 651 additions and 310 deletions
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33
cranelift/codegen/src/isa/x64/lower.isle
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@@ -484,18 +484,8 @@
;; SSE.
(rule (lower (has_type $F32X4 (bxor x y)))
(value_reg (xorps (put_in_reg x)
(put_in_reg_mem y))))
(rule (lower (has_type $F64X2 (bxor x y)))
(value_reg (xorpd (put_in_reg x)
(put_in_reg_mem y))))
(rule (lower (has_type (multi_lane _bits _lanes)
(bxor x y)))
(value_reg (pxor (put_in_reg x)
(put_in_reg_mem y))))
(rule (lower (has_type ty @ (multi_lane _bits _lanes) (bxor x y)))
(value_reg (sse_xor ty (put_in_reg x) (put_in_reg_mem y))))
;; `{i,b}128`.
@@ -945,3 +935,22 @@
(rule (lower (has_type (multi_lane _bits _lanes) (band_not x y)))
(value_reg (pandn (put_in_reg y) (put_in_reg_mem x))))
;;;; Rules for `fabs` ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Special case for `f32x4.abs`.
(rule (lower (has_type $F32X4 (fabs x)))
(value_reg (andps (put_in_reg x)
(RegMem.Reg (psrld (vector_all_ones $F32X4) (RegMemImm.Imm 1))))))
;; Special case for `f64x2.abs`.
(rule (lower (has_type $F64X2 (fabs x)))
(value_reg (andpd (put_in_reg x)
(RegMem.Reg (psrlq (vector_all_ones $F64X2) (RegMemImm.Imm 1))))))
;;;; Rules for `bnot` ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Special case for vector-types where bit-negation is an xor against an
;; all-one value
(rule (lower (has_type ty @ (multi_lane _bits _lanes) (bnot x)))
(value_reg (sse_xor ty (put_in_reg x) (RegMem.Reg (vector_all_ones ty)))))