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

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.
2022-02-24 23:03:06 +01:00
parent e8881b2cc0
commit 07d615d3f7
12 changed files with 1145 additions and 925 deletions
--- a/cranelift/codegen/src/isa/aarch64/lower.isle
+++ b/cranelift/codegen/src/isa/aarch64/lower.isle
@@ -2,7 +2,7 @@

 ;; The main lowering constructor term: takes a clif `Inst` and returns the
 ;; register(s) within which the lowered instruction's result values live.
-(decl lower (Inst) ValueRegs)
+(decl lower (Inst) InstOutput)

 ;;;; Rules for `iconst` ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

--- a/cranelift/codegen/src/isa/aarch64/lower/isle/generated_code.manifest
+++ b/cranelift/codegen/src/isa/aarch64/lower/isle/generated_code.manifest
@@ -1,4 +1,4 @@
 src/clif.isle 9ea75a6f790b5c03
-src/prelude.isle 8bf92e18323e7041
+src/prelude.isle 957023853b23dacb
 src/isa/aarch64/inst.isle 3678d0a37bdb4cff
-src/isa/aarch64/lower.isle 1bc1f817a4721801
+src/isa/aarch64/lower.isle 90accbfcadaea46d
--- a/cranelift/codegen/src/isa/aarch64/lower/isle/generated_code.rs
+++ b/cranelift/codegen/src/isa/aarch64/lower/isle/generated_code.rs