Use StmtRange explicitly

Author: serenity4

src/stage1/compiler_utils.jl

@@ -30,10 +30,6 @@ if VERSION < v"1.12.0-DEV.1268"
 
     Base.copy(ir::IRCode) = CC.copy(ir)
 
-    CC.BasicBlock(x::UnitRange) =
-        BasicBlock(StmtRange(first(x), last(x)))
-    CC.BasicBlock(x::UnitRange, preds::Vector{Int}, succs::Vector{Int}) =
-        BasicBlock(StmtRange(first(x), last(x)), preds, succs)
     Base.length(c::CC.NewNodeStream) = CC.length(c)
     Base.setindex!(i::Instruction, args...) = CC.setindex!(i, args...)
     Base.size(x::CC.UnitRange) = CC.size(x)

src/stage1/recurse.jl

@@ -183,10 +183,10 @@ function split_critical_edges!(ir)
             bb = ir.stmts[i][:inst].args[1]
             ir.stmts[i][:inst] = nothing
             bbnew = bb + ninserted
-            insert!(cfg.blocks, bbnew, BasicBlock(i:i))
+            insert!(cfg.blocks, bbnew, BasicBlock(StmtRange(i:i)))
             bb_rename_offset[bb] += 1
             bblock = cfg.blocks[bbnew+1]
-            cfg.blocks[bbnew+1] = BasicBlock((i+1):last(bblock.stmts),
+            cfg.blocks[bbnew+1] = BasicBlock(StmtRange((i+1):last(bblock.stmts)),
                 bblock.preds, bblock.succs)
             i += 1
             while i <= last(bblock.stmts)