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x64: use constant pool for u64 constants rather than movabs. (#4088)

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* Allow emitting u64 constants into constant pool.

* Use constant pool for constants on x64 that do not fit in a simm32 and are needed as a RegMem or RegMemImm.

* Fix rip-relative addressing bug in pinsrd emission.
This commit is contained in:
Chris Fallin
2022-05-10 09:21:05 -07:00
committed by GitHub
parent d3087487ea
commit eb435f3057
16 changed files with 483 additions and 383 deletions
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10
cranelift/codegen/src/prelude.isle
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@@ -442,6 +442,16 @@
(decl emit (MInst) Unit)
(extern constructor emit emit)
;; Constant pool emission.
(type VCodeConstant (primitive VCodeConstant))
;; Add a u64 little-endian constant to the in-memory constant pool and
;; return a VCodeConstant index that refers to it. This is
;; side-effecting but idempotent (constants are deduplicated).
(decl emit_u64_le_const (u64) VCodeConstant)
(extern constructor emit_u64_le_const emit_u64_le_const)
;;;; Helpers for Side-Effectful Instructions Without Results ;;;;;;;;;;;;;;;;;;;
(type SideEffectNoResult (enum