diff --git a/compiler/aarch64/cpupara.pas b/compiler/aarch64/cpupara.pas
index d40f8f0fde..582efaacdf 100644
--- a/compiler/aarch64/cpupara.pas
+++ b/compiler/aarch64/cpupara.pas
@@ -92,7 +92,7 @@ unit cpupara;
 
     function tcpuparamanager.get_saved_registers_int(calloption: tproccalloption): tcpuregisterarray;
       const
-        saved_regs : {$ifndef VER3_0}tcpuregisterarray{$else}array[0..9] of tsuperregister{$endif} =
+        saved_regs : tcpuregisterarray =
           (RS_X19,RS_X20,RS_X21,RS_X22,RS_X23,RS_X24,RS_X25,RS_X26,RS_X27,RS_X28);
       begin
         result:=saved_regs;
@@ -101,7 +101,7 @@ unit cpupara;
 
     function tcpuparamanager.get_saved_registers_mm(calloption: tproccalloption): tcpuregisterarray;
       const
-        saved_mm_regs : {$ifndef VER3_0}tcpuregisterarray{$else}array[0..7] of tsuperregister{$endif} =
+        saved_mm_regs : tcpuregisterarray =
           (RS_D8,RS_D9,RS_D10,RS_D11,RS_D12,RS_D13,RS_D14,RS_D15);
       begin
         result:=saved_mm_regs;
diff --git a/compiler/arm/cpupara.pas b/compiler/arm/cpupara.pas
index 09816ec2eb..53189dcec9 100644
--- a/compiler/arm/cpupara.pas
+++ b/compiler/arm/cpupara.pas
@@ -87,7 +87,7 @@ unit cpupara;
 
     function tcpuparamanager.get_saved_registers_int(calloption : tproccalloption):tcpuregisterarray;
       const
-        saved_regs : {$ifndef VER3_0}tcpuregisterarray{$else}array[0..6] of tsuperregister{$endif} =
+        saved_regs : tcpuregisterarray =
           (RS_R4,RS_R5,RS_R6,RS_R7,RS_R8,RS_R9,RS_R10);
       begin
         result:=saved_regs;
diff --git a/compiler/fpcdefs.inc b/compiler/fpcdefs.inc
index 6e12a0b2a6..fca7827fff 100644
--- a/compiler/fpcdefs.inc
+++ b/compiler/fpcdefs.inc
@@ -58,11 +58,6 @@
 
 {$define USEEXCEPT}
 
-{$ifdef VER3_0}
-  { fix bootstrapping dfa gives warnings on 3.2+ code due to changed case behaviour }
-  {$OPTIMIZATION NODFA}
-{$endif VER3_0}
-
 { This fake CPU is used to allow incorporation of globtype unit
   into utils/ppudump without any CPU specific code PM }
 {$ifdef generic_cpu}
diff --git a/compiler/i386/cpupara.pas b/compiler/i386/cpupara.pas
index 4e2b47f2fd..f6edaf66a4 100644
--- a/compiler/i386/cpupara.pas
+++ b/compiler/i386/cpupara.pas
@@ -299,8 +299,8 @@ unit cpupara;
 
     function tcpuparamanager.get_saved_registers_int(calloption : tproccalloption):tcpuregisterarray;
       const
-        saveregs : {$ifndef VER3_0}tcpuregisterarray{$else}array[0..3] of tsuperregister{$endif} = (RS_EBX,RS_ESI,RS_EDI,RS_EBP);
-        saveregs_oldfpccall : {$ifndef VER3_0}tcpuregisterarray{$else}array[0..0] of tsuperregister{$endif} = (RS_EBP);
+        saveregs : tcpuregisterarray = (RS_EBX,RS_ESI,RS_EDI,RS_EBP);
+        saveregs_oldfpccall : tcpuregisterarray = (RS_EBP);
       begin
         case calloption of
           pocall_internproc,
diff --git a/compiler/i8086/cpupara.pas b/compiler/i8086/cpupara.pas
index 628327db7e..13344bc39e 100644
--- a/compiler/i8086/cpupara.pas
+++ b/compiler/i8086/cpupara.pas
@@ -235,8 +235,8 @@ unit cpupara;
 
     function tcpuparamanager.get_saved_registers_int(calloption : tproccalloption):tcpuregisterarray;
       const
-        saveregs_cdecl: {$ifndef VER3_0}tcpuregisterarray{$else}array [0..2] of tsuperregister{$endif} = (RS_BP,RS_SI,RS_DI);
-        saveregs_pascal: {$ifndef VER3_0}tcpuregisterarray{$else}array [0..0] of tsuperregister{$endif} = (RS_BP);
+        saveregs_cdecl: tcpuregisterarray = (RS_BP,RS_SI,RS_DI);
+        saveregs_pascal: tcpuregisterarray = (RS_BP);
       begin
         case calloption of
           pocall_register,
diff --git a/compiler/jvm/cpupara.pas b/compiler/jvm/cpupara.pas
index c4bdf0bc3f..1e9ba782ed 100644
--- a/compiler/jvm/cpupara.pas
+++ b/compiler/jvm/cpupara.pas
@@ -75,7 +75,7 @@ implementation
     function tcpuparamanager.get_saved_registers_int(calloption: tproccalloption): tcpuregisterarray;
       const
         { dummy, not used for JVM }
-        saved_regs: {$ifndef VER3_0}tcpuregisterarray{$else}array [0..0] of tsuperregister{$endif} = (RS_NO);
+        saved_regs: tcpuregisterarray = (RS_NO);
       begin
         result:=saved_regs;
       end;
diff --git a/compiler/m68k/cpupara.pas b/compiler/m68k/cpupara.pas
index 2a1c99bcad..d75686a455 100644
--- a/compiler/m68k/cpupara.pas
+++ b/compiler/m68k/cpupara.pas
@@ -106,21 +106,21 @@ unit cpupara;
 
     function tcpuparamanager.get_saved_registers_int(calloption:tproccalloption):tcpuregisterarray;
       const
-        saved_regs: {$ifndef VER3_0}tcpuregisterarray{$else}array[0..5] of tsuperregister{$endif} = (RS_D2,RS_D3,RS_D4,RS_D5,RS_D6,RS_D7);
+        saved_regs: tcpuregisterarray = (RS_D2,RS_D3,RS_D4,RS_D5,RS_D6,RS_D7);
       begin
         result:=saved_regs;
       end;
 
     function tcpuparamanager.get_saved_registers_address(calloption:tproccalloption):tcpuregisterarray;
       const
-        saved_addr_regs: {$ifndef VER3_0}tcpuregisterarray{$else}array[0..4] of tsuperregister{$endif} = (RS_A2,RS_A3,RS_A4,RS_A5,RS_A6);
+        saved_addr_regs: tcpuregisterarray = (RS_A2,RS_A3,RS_A4,RS_A5,RS_A6);
       begin
         result:=saved_addr_regs;
       end;
 
     function tcpuparamanager.get_saved_registers_fpu(calloption:tproccalloption):tcpuregisterarray;
       const
-        saved_fpu_regs: {$ifndef VER3_0}tcpuregisterarray{$else}array[0..5] of tsuperregister{$endif} = (RS_FP2,RS_FP3,RS_FP4,RS_FP5,RS_FP6,RS_FP7);
+        saved_fpu_regs: tcpuregisterarray = (RS_FP2,RS_FP3,RS_FP4,RS_FP5,RS_FP6,RS_FP7);
       begin
         result:=saved_fpu_regs;
       end;
diff --git a/compiler/mips/cpupara.pas b/compiler/mips/cpupara.pas
index 2f0e4ed5b1..fc5c7837e1 100644
--- a/compiler/mips/cpupara.pas
+++ b/compiler/mips/cpupara.pas
@@ -109,7 +109,7 @@ implementation
 
     function tcpuparamanager.get_saved_registers_int(calloption : tproccalloption):TCpuRegisterArray;
       const
-        saved_regs : {$ifndef VER3_0}tcpuregisterarray{$else}array[0..0] of tsuperregister{$endif} =
+        saved_regs : tcpuregisterarray =
           (RS_NO);
       begin
         result:=saved_regs;
diff --git a/compiler/nadd.pas b/compiler/nadd.pas
index 739b046816..323145261d 100644
--- a/compiler/nadd.pas
+++ b/compiler/nadd.pas
@@ -3209,16 +3209,13 @@ implementation
                     end
                   else
                     begin
-{$ifndef VER3_0}
                       { if left is a currency integer constant, we can get rid of the factor 10000 }
                       if (left.nodetype=ordconstn) and (is_currency(left.resultdef)) and ((tordconstnode(left).value mod 10000)=0) then
                         tordconstnode(left).value:=tordconstnode(left).value div 10000
                       { or if right is an integer constant, we can get rid of its factor 10000 }
                       else if (right.nodetype=ordconstn) and (is_currency(right.resultdef)) and ((tordconstnode(right).value mod 10000)=0) then
                         tordconstnode(right).value:=tordconstnode(right).value div 10000
-                      else
-{$endif VER3_0}
-                      if (right.nodetype=muln) and is_currency(right.resultdef) and
+                      else if (right.nodetype=muln) and is_currency(right.resultdef) and
                         { do not test swapped here as the internal conversions are only create as "var."*"10000" }
                         is_currency(taddnode(right).right.resultdef)  and (taddnode(right).right.nodetype=ordconstn) and (tordconstnode(taddnode(right).right).value=10000) and
                         is_currency(taddnode(right).left.resultdef) and (taddnode(right).left.nodetype=typeconvn) then
diff --git a/compiler/objcasm.pas b/compiler/objcasm.pas
index bbbc114c84..7d3a3cbe38 100644
--- a/compiler/objcasm.pas
+++ b/compiler/objcasm.pas
@@ -32,11 +32,7 @@ unit objcasm;
 { Workaround for mantis #29906: bug in PPC jump table generation if a jump
   table is created for a case-statement that handles at least the lowest
   and highest possible value of the case expression type }
-{$ifndef VER3_0_0}
   function objc_section_name(sec: TObjCAsmSectionType): string;
-{$else}
-  function objc_section_name(sec: TAsmSectionType): string;
-{$endif}
 
 implementation
 
@@ -44,11 +40,7 @@ implementation
     verbose,
     systems;
 
-{$ifndef VER3_0_0}
   function objc_section_name(sec: TObjCAsmSectionType): string;
-{$else}
-  function objc_section_name(sec: TAsmSectionType): string;
-{$endif}
     begin
       result:='';
       if target_info.system in systems_darwin then
diff --git a/compiler/paramgr.pas b/compiler/paramgr.pas
index 729cbf56e6..56d49e0237 100644
--- a/compiler/paramgr.pas
+++ b/compiler/paramgr.pas
@@ -325,7 +325,7 @@ implementation
 
     function tparamanager.get_saved_registers_int(calloption : tproccalloption):tcpuregisterarray;
       const
-        inv: {$ifndef VER3_0}tcpuregisterarray{$else}array [0..0] of tsuperregister{$endif} = (RS_INVALID);
+        inv: tcpuregisterarray = (RS_INVALID);
       begin
         result:=inv;
       end;
@@ -333,7 +333,7 @@ implementation
 
     function tparamanager.get_saved_registers_address(calloption : tproccalloption):tcpuregisterarray;
       const
-        inv: {$ifndef VER3_0}tcpuregisterarray{$else}array [0..0] of tsuperregister{$endif} = (RS_INVALID);
+        inv: tcpuregisterarray = (RS_INVALID);
       begin
         result:=inv;
       end;
@@ -341,7 +341,7 @@ implementation
 
     function tparamanager.get_saved_registers_fpu(calloption : tproccalloption):tcpuregisterarray;
       const
-        inv: {$ifndef VER3_0}tcpuregisterarray{$else}array [0..0] of tsuperregister{$endif} = (RS_INVALID);
+        inv: tcpuregisterarray = (RS_INVALID);
       begin
         result:=inv;
       end;
@@ -349,7 +349,7 @@ implementation
 
     function tparamanager.get_saved_registers_mm(calloption : tproccalloption):tcpuregisterarray;
       const
-        inv: {$ifndef VER3_0}tcpuregisterarray{$else}array [0..0] of tsuperregister{$endif} = (RS_INVALID);
+        inv: tcpuregisterarray = (RS_INVALID);
       begin
         result:=inv;
       end;
diff --git a/compiler/powerpc/cpupara.pas b/compiler/powerpc/cpupara.pas
index 737e6cfe52..fc740506ab 100644
--- a/compiler/powerpc/cpupara.pas
+++ b/compiler/powerpc/cpupara.pas
@@ -81,7 +81,7 @@ unit cpupara;
 
     function tcpuparamanager.get_saved_registers_int(calloption : tproccalloption):tcpuregisterarray;
       const
-        saved_regs : {$ifndef VER3_0}tcpuregisterarray{$else}array[0..18] of tsuperregister{$endif} = (
+        saved_regs : tcpuregisterarray = (
           RS_R13,RS_R14,RS_R15,RS_R16,RS_R17,RS_R18,RS_R19,
           RS_R20,RS_R21,RS_R22,RS_R23,RS_R24,RS_R25,RS_R26,RS_R27,RS_R28,RS_R29,
           RS_R30,RS_R31
diff --git a/compiler/powerpc64/cpupara.pas b/compiler/powerpc64/cpupara.pas
index b33bc2ecc0..62f19eb4ba 100644
--- a/compiler/powerpc64/cpupara.pas
+++ b/compiler/powerpc64/cpupara.pas
@@ -83,7 +83,7 @@ end;
 function tcpuparamanager.get_saved_registers_int(calloption: tproccalloption):
   tcpuregisterarray;
 const
-  saved_regs: {$ifndef VER3_0}tcpuregisterarray{$else}array[0..17] of tsuperregister{$endif} = (
+  saved_regs: tcpuregisterarray = (
     RS_R14, RS_R15, RS_R16, RS_R17, RS_R18, RS_R19,
     RS_R20, RS_R21, RS_R22, RS_R23, RS_R24, RS_R25,
     RS_R26, RS_R27, RS_R28, RS_R29, RS_R30, RS_R31
diff --git a/compiler/wasm32/cpupara.pas b/compiler/wasm32/cpupara.pas
index d7ff8e109e..bdda79fe1e 100644
--- a/compiler/wasm32/cpupara.pas
+++ b/compiler/wasm32/cpupara.pas
@@ -67,7 +67,7 @@ implementation
     function tcpuparamanager.get_saved_registers_int(calloption: tproccalloption): tcpuregisterarray;
       const
         { dummy, not used for WebAssembly }
-        saved_regs: {$ifndef VER3_0}tcpuregisterarray{$else}array [0..0] of tsuperregister{$endif} = (RS_NO);
+        saved_regs: tcpuregisterarray = (RS_NO);
       begin
         result:=saved_regs;
       end;
diff --git a/compiler/x86_64/cpupara.pas b/compiler/x86_64/cpupara.pas
index 8f81dbb0da..dfb96ee654 100644
--- a/compiler/x86_64/cpupara.pas
+++ b/compiler/x86_64/cpupara.pas
@@ -1386,8 +1386,8 @@ unit cpupara;
 
     function tcpuparamanager.get_saved_registers_int(calloption : tproccalloption):tcpuregisterarray;
       const
-        win64_saved_std_regs : {$ifndef VER3_0}tcpuregisterarray{$else}array[0..7] of tsuperregister{$endif} = (RS_RBX,RS_RDI,RS_RSI,RS_R12,RS_R13,RS_R14,RS_R15,RS_RBP);
-        others_saved_std_regs : {$ifndef VER3_0}tcpuregisterarray{$else}array[0..4] of tsuperregister{$endif} = (RS_RBX,RS_R12,RS_R13,RS_R14,RS_R15);
+        win64_saved_std_regs : tcpuregisterarray = (RS_RBX,RS_RDI,RS_RSI,RS_R12,RS_R13,RS_R14,RS_R15,RS_RBP);
+        others_saved_std_regs : tcpuregisterarray = (RS_RBX,RS_R12,RS_R13,RS_R14,RS_R15);
       begin
         if tcgx86_64(cg).use_ms_abi then
           result:=win64_saved_std_regs
@@ -1398,7 +1398,7 @@ unit cpupara;
 
     function tcpuparamanager.get_saved_registers_mm(calloption: tproccalloption):tcpuregisterarray;
       const
-        win64_saved_xmm_regs : {$ifndef VER3_0}tcpuregisterarray{$else}array[0..9] of tsuperregister{$endif} = (RS_XMM6,RS_XMM7,
+        win64_saved_xmm_regs : tcpuregisterarray = (RS_XMM6,RS_XMM7,
           RS_XMM8,RS_XMM9,RS_XMM10,RS_XMM11,RS_XMM12,RS_XMM13,RS_XMM14,RS_XMM15);
       begin
         if tcgx86_64(cg).use_ms_abi then