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ISLE: Lowering of multi-output instructions (#3783)

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This changes the output of the `lower` constructor from a
`ValueRegs` to a new `InstOutput` type, which is a vector
of `ValueRegs`.

Code in `lower_common` is updated to use this new type to
handle instructions with multiple outputs.  All back-ends
are updated to use the new type.
This commit is contained in:
Ulrich Weigand
2022-02-24 23:03:06 +01:00
committed by GitHub
parent e8881b2cc0
commit 07d615d3f7
12 changed files with 1145 additions and 925 deletions
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20
cranelift/codegen/src/isa/x64/inst.isle
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@@ -1009,20 +1009,20 @@
(rule (put_in_xmm_mem_imm val)
(xmm_mem_imm_new (put_in_reg_mem_imm val)))
;; Construct a `ValueRegs` out of a single GPR register.
(decl value_gpr (Gpr) ValueRegs)
(rule (value_gpr x)
(value_reg (gpr_to_reg x)))
;; Construct an `InstOutput` out of a single GPR register.
(decl output_gpr (Gpr) InstOutput)
(rule (output_gpr x)
(output_reg (gpr_to_reg x)))
;; Construct a `ValueRegs` out of two GPR registers.
(decl value_gprs (Gpr Gpr) ValueRegs)
(rule (value_gprs x y)
(value_regs (gpr_to_reg x) (gpr_to_reg y)))
;; Construct a `ValueRegs` out of a single XMM register.
(decl value_xmm (Xmm) ValueRegs)
(rule (value_xmm x)
(value_reg (xmm_to_reg x)))
;; Construct an `InstOutput` out of a single XMM register.
(decl output_xmm (Xmm) InstOutput)
(rule (output_xmm x)
(output_reg (xmm_to_reg x)))
;; Get the `n`th reg in a `ValueRegs` and construct a GPR from it.
;;
@@ -2223,7 +2223,7 @@
;;;; Automatic conversions ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(convert Gpr ValueRegs value_gpr)
(convert Gpr InstOutput output_gpr)
(convert Value Gpr put_in_gpr)
(convert Value GprMem put_in_gpr_mem)
(convert Value GprMemImm put_in_gpr_mem_imm)
@@ -2242,7 +2242,7 @@
(convert WritableGpr WritableReg writable_gpr_to_reg)
(convert WritableGpr Reg writable_gpr_to_r_reg)
(convert Xmm ValueRegs value_xmm)
(convert Xmm InstOutput output_xmm)
(convert Value Xmm put_in_xmm)
(convert Value XmmMem put_in_xmm_mem)
(convert Value XmmMemImm put_in_xmm_mem_imm)