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Move emit and emit_safepoint to prelude.isle

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Even though the implementation of emit and emit_safepoint may
be platform-specific, the interface ought to be common so that
other code in prelude.isle may safely call these constructors.

This patch moves the definition of emit (from all platforms)
and emit_safepoint (s390x only) to prelude.isle.  This required
adding an emit_safepoint implementation to aarch64 and x64 as
well - the latter is still a stub as special move mitosis
handling will be required.
This commit is contained in:
Ulrich Weigand
2022-01-31 22:54:04 +01:00
parent 3c2f695dd3
commit a3e2f5c28b
12 changed files with 825 additions and 788 deletions
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7
cranelift/codegen/src/isa/x64/inst.isle
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@@ -613,13 +613,6 @@
;; maintain the invariant that each temporary register they allocate and define
;; only gets defined the once.
;; Emit an instruction.
;;
;; This is low-level and side-effectful; it should only be used as an
;; implementation detail by helpers that preserve the SSA facade themselves.
(decl emit (MInst) Unit)
(extern constructor emit emit)
;; Helper for emitting `MInst.AluRmiR` instructions.
(decl alu_rmi_r (Type AluRmiROpcode Reg RegMemImm) Reg)
(rule (alu_rmi_r ty opcode src1 src2)