diff --git a/compiler/cgen.nim b/compiler/cgen.nim
index b39e5ffedc..598b77ecdb 100644
--- a/compiler/cgen.nim
+++ b/compiler/cgen.nim
@@ -1467,6 +1467,8 @@ proc genProcPrototype(m: BModule, sym: PSym) =
           m.s[cfsProcHeaders].add(extract(header))
           m.s[cfsProcHeaders].finishProcHeaderAsProto()
 
+include inliner
+
 # TODO: figure out how to rename this - it DOES generate a forward declaration
 proc genProcNoForward(m: BModule, prc: PSym) =
   if lfImportCompilerProc in prc.loc.flags:
@@ -1505,16 +1507,22 @@ proc genProcNoForward(m: BModule, prc: PSym) =
       #if prc.loc.k == locNone:
       # mangle the inline proc based on the module where it is defined -
       # not on the first module that uses it
-      let m2 = if m.config.symbolFiles != disabledSf: m
-               else: findPendingModule(m, prc)
-      fillProcLoc(m2, prc.ast[namePos])
-      #elif {sfExportc, sfImportc} * prc.flags == {}:
-      #  # reset name to restore consistency in case of hashing collisions:
-      #  echo "resetting ", prc.id, " by ", m.module.name.s
-      #  prc.loc.snippet = nil
-      #  prc.loc.snippet = mangleName(m, prc)
-      genProcPrototype(m, prc)
-      genProcAux(m, prc)
+      if optCompress in m.config.globalOptions:
+        let prcCopy = copyInlineProc(prc, m.idgen)
+        fillProcLoc(m, prcCopy.ast[namePos])
+        genProcPrototype(m, prcCopy)
+        genProcAux(m, prcCopy)
+      else:
+        let m2 = if m.config.symbolFiles != disabledSf: m
+                else: findPendingModule(m, prc)
+        fillProcLoc(m2, prc.ast[namePos])
+        #elif {sfExportc, sfImportc} * prc.flags == {}:
+        #  # reset name to restore consistency in case of hashing collisions:
+        #  echo "resetting ", prc.id, " by ", m.module.name.s
+        #  prc.loc.snippet = nil
+        #  prc.loc.snippet = mangleName(m, prc)
+        genProcPrototype(m, prc)
+        genProcAux(m, prc)
   elif sfImportc notin prc.flags:
     var q = findPendingModule(m, prc)
     fillProcLoc(q, prc.ast[namePos])
diff --git a/compiler/inliner.nim b/compiler/inliner.nim
new file mode 100644
index 0000000000..31620ae99e
--- /dev/null
+++ b/compiler/inliner.nim
@@ -0,0 +1,81 @@
+
+
+proc copyInlineProcBody(n: PNode; locals: var Table[int, PSym]; idgen: IdGenerator): PNode =
+  case n.kind
+  of nkEmpty..pred(nkSym), succ(nkSym)..nkNilLit:
+    result = n
+  of nkSym:
+    let sym = locals.getOrDefault(n.sym.id)
+    if sym != nil:
+      result = newSymNode(sym, n.info)
+    else:
+      result = n
+  of nkLetSection, nkVarSection, nkConstSection:
+    result = shallowCopy(n)
+    for i in 0..<n.len:
+      let it = n[i]
+      if it.kind == nkCommentStmt:
+        result[i] = it
+      elif it.kind == nkIdentDefs:
+        if it[0].kind == nkSym:
+          let oldSym = it[0].sym
+          let newSym = copySym(oldSym, idgen)
+          locals[oldSym.id] = newSym
+          result[i] = shallowCopy(it)
+          result[i][0] = newSymNode(newSym, oldSym.info)
+          for j in 1..<it.len:
+            result[i][j] = copyInlineProcBody(it[j], locals, idgen)
+        else:
+          result[i] = it
+      else:
+        assert it.kind == nkVarTuple
+        result[i] = shallowCopy(it)
+        for j in 0..<it.len-2:
+          assert it[j].kind == nkSym
+          let oldSym = it[j].sym
+          let newSym = copySym(oldSym, idgen)
+          locals[oldSym.id] = newSym
+          result[i][j] = newSymNode(newSym, oldSym.info)
+        for j in it.len-2..<it.len:
+          result[i][j] = copyInlineProcBody(it[j], locals, idgen)
+
+  of routineDefs, nkTypeSection, nkTypeOfExpr, nkMixinStmt, nkBindStmt:
+    result = n
+  else:
+    result = shallowCopy(n)
+    for i in 0..<n.len:
+      result[i] = copyInlineProcBody(n[i], locals, idgen)
+  
+proc copyParams(n: PNode; locals: var Table[int, PSym]; idgen: IdGenerator): PNode =
+  result = shallowCopy(n)
+  result[0] = n[0] # return type
+  for i in 1..<n.len:
+    let it = n[i]
+    assert it.kind == nkIdentDefs
+    assert it[0].kind == nkSym
+    let oldSym = it[0].sym
+    let newSym = copySym(oldSym, idgen)
+    locals[oldSym.id] = newSym
+    result[i] = shallowCopy(it)
+    result[i][0] = newSymNode(newSym, oldSym.info)
+    for j in 1..<it.len:
+      result[i][j] = copyInlineProcBody(it[j], locals, idgen)
+
+proc copyInlineProc(prc: PSym; idgen: IdGenerator): PSym =
+  result = copySym(prc, idgen)
+  var locals = initTable[int, PSym]()
+
+  var a = newNodeI(prc.ast.kind, prc.ast.info)
+  for i in 0..<prc.ast.len:
+    if i == paramsPos:
+      a.add copyParams(prc.ast[i], locals, idgen)
+    elif i == resultPos:
+      assert prc.ast[i].kind == nkSym
+      let oldRes = prc.ast[i].sym
+      let newRes = copySym(oldRes, idgen)
+      locals[oldRes.id] = newRes
+      a.add newSymNode(newRes, oldRes.info)
+    else:
+      a.add copyInlineProcBody(prc.ast[i], locals, idgen)
+  result.ast = a
+