Introduce per-function environment for Emit (ocaml#8936)

(cherry picked from commit 24d7f3b)

.depend

@@ -2481,6 +2481,7 @@ asmcomp/emit.cmo : \
     asmcomp/mach.cmi \
     asmcomp/linear.cmi \
     lambda/lambda.cmi \
+    asmcomp/emitenv.cmi \
     asmcomp/emitaux.cmi \
     utils/domainstate.cmi \
     utils/config.cmi \
@@ -2503,6 +2504,7 @@ asmcomp/emit.cmx : \
     asmcomp/mach.cmx \
     asmcomp/linear.cmx \
     lambda/lambda.cmx \
+    asmcomp/emitenv.cmi \
     asmcomp/emitaux.cmx \
     utils/domainstate.cmx \
     utils/config.cmx \
@@ -2516,21 +2518,27 @@ asmcomp/emit.cmi : \
     asmcomp/linear.cmi \
     asmcomp/cmm.cmi
 asmcomp/emitaux.cmo : \
+    asmcomp/emitenv.cmi \
     lambda/debuginfo.cmi \
     utils/config.cmi \
     asmcomp/cmm.cmi \
     utils/clflags.cmi \
     asmcomp/arch.cmo \
     asmcomp/emitaux.cmi
 asmcomp/emitaux.cmx : \
+    asmcomp/emitenv.cmi \
     lambda/debuginfo.cmx \
     utils/config.cmx \
     asmcomp/cmm.cmx \
     utils/clflags.cmx \
     asmcomp/arch.cmx \
     asmcomp/emitaux.cmi
 asmcomp/emitaux.cmi : \
+    asmcomp/linear.cmi \
+    asmcomp/emitenv.cmi \
     lambda/debuginfo.cmi
+asmcomp/emitenv.cmi : \
+    asmcomp/linear.cmi
 asmcomp/interf.cmo : \
     asmcomp/reg.cmi \
     asmcomp/proc.cmi \

Changes

@@ -10,6 +10,9 @@ OCaml 4.12, maintenance version
 - #10349: Fix destroyed_at_c_call on RISC-V
   (Mark Shinwell, review by Nicolás Ojeda Bär)
 
+- #8936: Per-function environment for Emit
+  (Greta Yorsh, review by Vincent Laviron and Florian Angeletti)
+
 - #10294, #10295: fix an assert-failure in pattern-matching compilation
   (Gabriel Scherer, review by Thomas Refis and Luc Maranget,
    report by Nicolás Ojeda Bär)