Move compiler tests to Compiler package (#56522)

This does not yet make the compiler tests independently runnable using
`] test Compiler`; it only moves the files and wires them up to continue
running as part of the Base test runner.

---------

Co-authored-by: Shuhei Kadowaki <aviatesk@gmail.com>

Author: Keno

Compiler/src/optimize.jl

@@ -217,7 +217,7 @@ include("ssair/slot2ssa.jl")
 include("ssair/inlining.jl")
 include("ssair/verify.jl")
 include("ssair/legacy.jl")
-include("ssair/EscapeAnalysis/EscapeAnalysis.jl")
+include("ssair/EscapeAnalysis.jl")
 include("ssair/passes.jl")
 include("ssair/irinterp.jl")
 

Compiler/src/ssair/EscapeAnalysis/EscapeAnalysis.jl renamed to Compiler/src/ssair/EscapeAnalysis.jl

@@ -33,7 +33,7 @@ using ..Compiler: # Core.Compiler specific definitions
 function include(x)
     if !isdefined(_TOP_MOD.Base, :end_base_include)
         # During bootstrap, all includes are relative to `base/`
-        x = ccall(:jl_prepend_string, Ref{String}, (Any, Any), "ssair/EscapeAnalysis/", x)
+        x = ccall(:jl_prepend_string, Ref{String}, (Any, Any), "ssair/", x)
     end
     _TOP_MOD.include(@__MODULE__, x)
 end

Compiler/src/ssair/EscapeAnalysis/disjoint_set.jl renamed to Compiler/src/ssair/disjoint_set.jl

@@ -3,13 +3,11 @@
 # Heap operations on flat vectors
 # -------------------------------
 
-
 # Binary heap indexing
 heapleft(i::Integer) = 2i
 heapright(i::Integer) = 2i + 1
 heapparent(i::Integer) = div(i, 2)
 
-
 # Binary min-heap percolate down.
 function percolate_down!(xs::Vector, i::Integer, x, o::Ordering, len::Integer=length(xs))
     @inbounds while (l = heapleft(i)) <= len
@@ -60,7 +58,6 @@ function heappush!(xs::Vector, x, o::Ordering)
     return xs
 end
 
-
 """
     heapify!(v, ord::Ordering)
 

Compiler/src/ssair/heap.jl

@@ -1,15 +1,15 @@
 module test_EA
 
-const use_core_compiler = true
+global use_core_compiler::Bool = true
 
 if use_core_compiler
     const EscapeAnalysis = Core.Compiler.EscapeAnalysis
 else
-    include(normpath(Sys.BINDIR, "..", "..", "base", "compiler", "ssair", "EscapeAnalysis", "EscapeAnalysis.jl"))
+    include(normpath(Sys.BINDIR, "..", "..", "Compiler", "src", "ssair", "EscapeAnalysis.jl"))
 end
 
 include("EAUtils.jl")
-include("../irutils.jl")
+include("irutils.jl")
 
 using Test, .EscapeAnalysis, .EAUtils
 using .EscapeAnalysis: ignore_argescape