vhdl: recognize conv_signed. For #2408

3 files changed, 155 insertions, 138 deletions

diff --git a/pyGHDL/libghdl/vhdl/nodes.py b/pyGHDL/libghdl/vhdl/nodes.py
index 72c2c57f6..e91d44a81 100644
--- a/pyGHDL/libghdl/vhdl/nodes.py
+++ b/pyGHDL/libghdl/vhdl/nodes.py
@@ -1836,144 +1836,148 @@ class Iir_Predefined(IntEnum):
     Ieee_Std_Logic_Arith_Conv_Unsigned_Uns = 614
     Ieee_Std_Logic_Arith_Conv_Unsigned_Sgn = 615
     Ieee_Std_Logic_Arith_Conv_Unsigned_Log = 616
-    Ieee_Std_Logic_Arith_Conv_Integer_Int = 617
-    Ieee_Std_Logic_Arith_Conv_Integer_Uns = 618
-    Ieee_Std_Logic_Arith_Conv_Integer_Sgn = 619
-    Ieee_Std_Logic_Arith_Conv_Integer_Log = 620
-    Ieee_Std_Logic_Arith_Conv_Vector_Int = 621
-    Ieee_Std_Logic_Arith_Conv_Vector_Uns = 622
-    Ieee_Std_Logic_Arith_Conv_Vector_Sgn = 623
-    Ieee_Std_Logic_Arith_Conv_Vector_Log = 624
-    Ieee_Std_Logic_Arith_Ext = 625
-    Ieee_Std_Logic_Arith_Sxt = 626
-    Ieee_Std_Logic_Arith_Id_Uns_Uns = 627
-    Ieee_Std_Logic_Arith_Id_Sgn_Sgn = 628
-    Ieee_Std_Logic_Arith_Neg_Sgn_Sgn = 629
-    Ieee_Std_Logic_Arith_Abs_Sgn_Sgn = 630
-    Ieee_Std_Logic_Arith_Shl_Uns = 631
-    Ieee_Std_Logic_Arith_Shl_Sgn = 632
-    Ieee_Std_Logic_Arith_Shr_Uns = 633
-    Ieee_Std_Logic_Arith_Shr_Sgn = 634
-    Ieee_Std_Logic_Arith_Id_Uns_Slv = 635
-    Ieee_Std_Logic_Arith_Id_Sgn_Slv = 636
-    Ieee_Std_Logic_Arith_Neg_Sgn_Slv = 637
-    Ieee_Std_Logic_Arith_Abs_Sgn_Slv = 638
-    Ieee_Std_Logic_Arith_Mul_Uns_Uns_Uns = 639
-    Ieee_Std_Logic_Arith_Mul_Sgn_Sgn_Sgn = 640
-    Ieee_Std_Logic_Arith_Mul_Sgn_Uns_Sgn = 641
-    Ieee_Std_Logic_Arith_Mul_Uns_Sgn_Sgn = 642
-    Ieee_Std_Logic_Arith_Mul_Uns_Uns_Slv = 643
-    Ieee_Std_Logic_Arith_Mul_Sgn_Sgn_Slv = 644
-    Ieee_Std_Logic_Arith_Mul_Sgn_Uns_Slv = 645
-    Ieee_Std_Logic_Arith_Mul_Uns_Sgn_Slv = 646
-    Ieee_Std_Logic_Arith_Add_Uns_Uns_Uns = 647
-    Ieee_Std_Logic_Arith_Add_Sgn_Sgn_Sgn = 648
-    Ieee_Std_Logic_Arith_Add_Uns_Sgn_Sgn = 649
-    Ieee_Std_Logic_Arith_Add_Sgn_Uns_Sgn = 650
-    Ieee_Std_Logic_Arith_Add_Uns_Int_Uns = 651
-    Ieee_Std_Logic_Arith_Add_Int_Uns_Uns = 652
-    Ieee_Std_Logic_Arith_Add_Sgn_Int_Sgn = 653
-    Ieee_Std_Logic_Arith_Add_Int_Sgn_Sgn = 654
-    Ieee_Std_Logic_Arith_Add_Uns_Log_Uns = 655
-    Ieee_Std_Logic_Arith_Add_Log_Uns_Uns = 656
-    Ieee_Std_Logic_Arith_Add_Sgn_Log_Sgn = 657
-    Ieee_Std_Logic_Arith_Add_Log_Sgn_Sgn = 658
-    Ieee_Std_Logic_Arith_Add_Uns_Uns_Slv = 659
-    Ieee_Std_Logic_Arith_Add_Sgn_Sgn_Slv = 660
-    Ieee_Std_Logic_Arith_Add_Uns_Sgn_Slv = 661
-    Ieee_Std_Logic_Arith_Add_Sgn_Uns_Slv = 662
-    Ieee_Std_Logic_Arith_Add_Uns_Int_Slv = 663
-    Ieee_Std_Logic_Arith_Add_Int_Uns_Slv = 664
-    Ieee_Std_Logic_Arith_Add_Sgn_Int_Slv = 665
-    Ieee_Std_Logic_Arith_Add_Int_Sgn_Slv = 666
-    Ieee_Std_Logic_Arith_Add_Uns_Log_Slv = 667
-    Ieee_Std_Logic_Arith_Add_Log_Uns_Slv = 668
-    Ieee_Std_Logic_Arith_Add_Sgn_Log_Slv = 669
-    Ieee_Std_Logic_Arith_Add_Log_Sgn_Slv = 670
-    Ieee_Std_Logic_Arith_Sub_Uns_Uns_Uns = 671
-    Ieee_Std_Logic_Arith_Sub_Sgn_Sgn_Sgn = 672
-    Ieee_Std_Logic_Arith_Sub_Uns_Sgn_Sgn = 673
-    Ieee_Std_Logic_Arith_Sub_Sgn_Uns_Sgn = 674
-    Ieee_Std_Logic_Arith_Sub_Uns_Int_Uns = 675
-    Ieee_Std_Logic_Arith_Sub_Int_Uns_Uns = 676
-    Ieee_Std_Logic_Arith_Sub_Sgn_Int_Sgn = 677
-    Ieee_Std_Logic_Arith_Sub_Int_Sgn_Sgn = 678
-    Ieee_Std_Logic_Arith_Sub_Uns_Log_Uns = 679
-    Ieee_Std_Logic_Arith_Sub_Log_Uns_Uns = 680
-    Ieee_Std_Logic_Arith_Sub_Sgn_Log_Sgn = 681
-    Ieee_Std_Logic_Arith_Sub_Log_Sgn_Sgn = 682
-    Ieee_Std_Logic_Arith_Sub_Uns_Uns_Slv = 683
-    Ieee_Std_Logic_Arith_Sub_Sgn_Sgn_Slv = 684
-    Ieee_Std_Logic_Arith_Sub_Uns_Sgn_Slv = 685
-    Ieee_Std_Logic_Arith_Sub_Sgn_Uns_Slv = 686
-    Ieee_Std_Logic_Arith_Sub_Uns_Int_Slv = 687
-    Ieee_Std_Logic_Arith_Sub_Int_Uns_Slv = 688
-    Ieee_Std_Logic_Arith_Sub_Sgn_Int_Slv = 689
-    Ieee_Std_Logic_Arith_Sub_Int_Sgn_Slv = 690
-    Ieee_Std_Logic_Arith_Sub_Uns_Log_Slv = 691
-    Ieee_Std_Logic_Arith_Sub_Log_Uns_Slv = 692
-    Ieee_Std_Logic_Arith_Sub_Sgn_Log_Slv = 693
-    Ieee_Std_Logic_Arith_Sub_Log_Sgn_Slv = 694
-    Ieee_Std_Logic_Arith_Lt_Uns_Uns = 695
-    Ieee_Std_Logic_Arith_Lt_Sgn_Sgn = 696
-    Ieee_Std_Logic_Arith_Lt_Uns_Sgn = 697
-    Ieee_Std_Logic_Arith_Lt_Sgn_Uns = 698
-    Ieee_Std_Logic_Arith_Lt_Uns_Int = 699
-    Ieee_Std_Logic_Arith_Lt_Int_Uns = 700
-    Ieee_Std_Logic_Arith_Lt_Sgn_Int = 701
-    Ieee_Std_Logic_Arith_Lt_Int_Sgn = 702
-    Ieee_Std_Logic_Arith_Le_Uns_Uns = 703
-    Ieee_Std_Logic_Arith_Le_Sgn_Sgn = 704
-    Ieee_Std_Logic_Arith_Le_Uns_Sgn = 705
-    Ieee_Std_Logic_Arith_Le_Sgn_Uns = 706
-    Ieee_Std_Logic_Arith_Le_Uns_Int = 707
-    Ieee_Std_Logic_Arith_Le_Int_Uns = 708
-    Ieee_Std_Logic_Arith_Le_Sgn_Int = 709
-    Ieee_Std_Logic_Arith_Le_Int_Sgn = 710
-    Ieee_Std_Logic_Arith_Gt_Uns_Uns = 711
-    Ieee_Std_Logic_Arith_Gt_Sgn_Sgn = 712
-    Ieee_Std_Logic_Arith_Gt_Uns_Sgn = 713
-    Ieee_Std_Logic_Arith_Gt_Sgn_Uns = 714
-    Ieee_Std_Logic_Arith_Gt_Uns_Int = 715
-    Ieee_Std_Logic_Arith_Gt_Int_Uns = 716
-    Ieee_Std_Logic_Arith_Gt_Sgn_Int = 717
-    Ieee_Std_Logic_Arith_Gt_Int_Sgn = 718
-    Ieee_Std_Logic_Arith_Ge_Uns_Uns = 719
-    Ieee_Std_Logic_Arith_Ge_Sgn_Sgn = 720
-    Ieee_Std_Logic_Arith_Ge_Uns_Sgn = 721
-    Ieee_Std_Logic_Arith_Ge_Sgn_Uns = 722
-    Ieee_Std_Logic_Arith_Ge_Uns_Int = 723
-    Ieee_Std_Logic_Arith_Ge_Int_Uns = 724
-    Ieee_Std_Logic_Arith_Ge_Sgn_Int = 725
-    Ieee_Std_Logic_Arith_Ge_Int_Sgn = 726
-    Ieee_Std_Logic_Arith_Eq_Uns_Uns = 727
-    Ieee_Std_Logic_Arith_Eq_Sgn_Sgn = 728
-    Ieee_Std_Logic_Arith_Eq_Uns_Sgn = 729
-    Ieee_Std_Logic_Arith_Eq_Sgn_Uns = 730
-    Ieee_Std_Logic_Arith_Eq_Uns_Int = 731
-    Ieee_Std_Logic_Arith_Eq_Int_Uns = 732
-    Ieee_Std_Logic_Arith_Eq_Sgn_Int = 733
-    Ieee_Std_Logic_Arith_Eq_Int_Sgn = 734
-    Ieee_Std_Logic_Arith_Ne_Uns_Uns = 735
-    Ieee_Std_Logic_Arith_Ne_Sgn_Sgn = 736
-    Ieee_Std_Logic_Arith_Ne_Uns_Sgn = 737
-    Ieee_Std_Logic_Arith_Ne_Sgn_Uns = 738
-    Ieee_Std_Logic_Arith_Ne_Uns_Int = 739
-    Ieee_Std_Logic_Arith_Ne_Int_Uns = 740
-    Ieee_Std_Logic_Arith_Ne_Sgn_Int = 741
-    Ieee_Std_Logic_Arith_Ne_Int_Sgn = 742
-    Ieee_Std_Logic_Misc_And_Reduce_Slv = 743
-    Ieee_Std_Logic_Misc_And_Reduce_Suv = 744
-    Ieee_Std_Logic_Misc_Nand_Reduce_Slv = 745
-    Ieee_Std_Logic_Misc_Nand_Reduce_Suv = 746
-    Ieee_Std_Logic_Misc_Or_Reduce_Slv = 747
-    Ieee_Std_Logic_Misc_Or_Reduce_Suv = 748
-    Ieee_Std_Logic_Misc_Nor_Reduce_Slv = 749
-    Ieee_Std_Logic_Misc_Nor_Reduce_Suv = 750
-    Ieee_Std_Logic_Misc_Xor_Reduce_Slv = 751
-    Ieee_Std_Logic_Misc_Xor_Reduce_Suv = 752
-    Ieee_Std_Logic_Misc_Xnor_Reduce_Slv = 753
-    Ieee_Std_Logic_Misc_Xnor_Reduce_Suv = 754
+    Ieee_Std_Logic_Arith_Conv_Signed_Int = 617
+    Ieee_Std_Logic_Arith_Conv_Signed_Uns = 618
+    Ieee_Std_Logic_Arith_Conv_Signed_Sgn = 619
+    Ieee_Std_Logic_Arith_Conv_Signed_Log = 620
+    Ieee_Std_Logic_Arith_Conv_Integer_Int = 621
+    Ieee_Std_Logic_Arith_Conv_Integer_Uns = 622
+    Ieee_Std_Logic_Arith_Conv_Integer_Sgn = 623
+    Ieee_Std_Logic_Arith_Conv_Integer_Log = 624
+    Ieee_Std_Logic_Arith_Conv_Vector_Int = 625
+    Ieee_Std_Logic_Arith_Conv_Vector_Uns = 626
+    Ieee_Std_Logic_Arith_Conv_Vector_Sgn = 627
+    Ieee_Std_Logic_Arith_Conv_Vector_Log = 628
+    Ieee_Std_Logic_Arith_Ext = 629
+    Ieee_Std_Logic_Arith_Sxt = 630
+    Ieee_Std_Logic_Arith_Id_Uns_Uns = 631
+    Ieee_Std_Logic_Arith_Id_Sgn_Sgn = 632
+    Ieee_Std_Logic_Arith_Neg_Sgn_Sgn = 633
+    Ieee_Std_Logic_Arith_Abs_Sgn_Sgn = 634
+    Ieee_Std_Logic_Arith_Shl_Uns = 635
+    Ieee_Std_Logic_Arith_Shl_Sgn = 636
+    Ieee_Std_Logic_Arith_Shr_Uns = 637
+    Ieee_Std_Logic_Arith_Shr_Sgn = 638
+    Ieee_Std_Logic_Arith_Id_Uns_Slv = 639
+    Ieee_Std_Logic_Arith_Id_Sgn_Slv = 640
+    Ieee_Std_Logic_Arith_Neg_Sgn_Slv = 641
+    Ieee_Std_Logic_Arith_Abs_Sgn_Slv = 642
+    Ieee_Std_Logic_Arith_Mul_Uns_Uns_Uns = 643
+    Ieee_Std_Logic_Arith_Mul_Sgn_Sgn_Sgn = 644
+    Ieee_Std_Logic_Arith_Mul_Sgn_Uns_Sgn = 645
+    Ieee_Std_Logic_Arith_Mul_Uns_Sgn_Sgn = 646
+    Ieee_Std_Logic_Arith_Mul_Uns_Uns_Slv = 647
+    Ieee_Std_Logic_Arith_Mul_Sgn_Sgn_Slv = 648
+    Ieee_Std_Logic_Arith_Mul_Sgn_Uns_Slv = 649
+    Ieee_Std_Logic_Arith_Mul_Uns_Sgn_Slv = 650
+    Ieee_Std_Logic_Arith_Add_Uns_Uns_Uns = 651
+    Ieee_Std_Logic_Arith_Add_Sgn_Sgn_Sgn = 652
+    Ieee_Std_Logic_Arith_Add_Uns_Sgn_Sgn = 653
+    Ieee_Std_Logic_Arith_Add_Sgn_Uns_Sgn = 654
+    Ieee_Std_Logic_Arith_Add_Uns_Int_Uns = 655
+    Ieee_Std_Logic_Arith_Add_Int_Uns_Uns = 656
+    Ieee_Std_Logic_Arith_Add_Sgn_Int_Sgn = 657
+    Ieee_Std_Logic_Arith_Add_Int_Sgn_Sgn = 658
+    Ieee_Std_Logic_Arith_Add_Uns_Log_Uns = 659
+    Ieee_Std_Logic_Arith_Add_Log_Uns_Uns = 660
+    Ieee_Std_Logic_Arith_Add_Sgn_Log_Sgn = 661
+    Ieee_Std_Logic_Arith_Add_Log_Sgn_Sgn = 662
+    Ieee_Std_Logic_Arith_Add_Uns_Uns_Slv = 663
+    Ieee_Std_Logic_Arith_Add_Sgn_Sgn_Slv = 664
+    Ieee_Std_Logic_Arith_Add_Uns_Sgn_Slv = 665
+    Ieee_Std_Logic_Arith_Add_Sgn_Uns_Slv = 666
+    Ieee_Std_Logic_Arith_Add_Uns_Int_Slv = 667
+    Ieee_Std_Logic_Arith_Add_Int_Uns_Slv = 668
+    Ieee_Std_Logic_Arith_Add_Sgn_Int_Slv = 669
+    Ieee_Std_Logic_Arith_Add_Int_Sgn_Slv = 670
+    Ieee_Std_Logic_Arith_Add_Uns_Log_Slv = 671
+    Ieee_Std_Logic_Arith_Add_Log_Uns_Slv = 672
+    Ieee_Std_Logic_Arith_Add_Sgn_Log_Slv = 673
+    Ieee_Std_Logic_Arith_Add_Log_Sgn_Slv = 674
+    Ieee_Std_Logic_Arith_Sub_Uns_Uns_Uns = 675
+    Ieee_Std_Logic_Arith_Sub_Sgn_Sgn_Sgn = 676
+    Ieee_Std_Logic_Arith_Sub_Uns_Sgn_Sgn = 677
+    Ieee_Std_Logic_Arith_Sub_Sgn_Uns_Sgn = 678
+    Ieee_Std_Logic_Arith_Sub_Uns_Int_Uns = 679
+    Ieee_Std_Logic_Arith_Sub_Int_Uns_Uns = 680
+    Ieee_Std_Logic_Arith_Sub_Sgn_Int_Sgn = 681
+    Ieee_Std_Logic_Arith_Sub_Int_Sgn_Sgn = 682
+    Ieee_Std_Logic_Arith_Sub_Uns_Log_Uns = 683
+    Ieee_Std_Logic_Arith_Sub_Log_Uns_Uns = 684
+    Ieee_Std_Logic_Arith_Sub_Sgn_Log_Sgn = 685
+    Ieee_Std_Logic_Arith_Sub_Log_Sgn_Sgn = 686
+    Ieee_Std_Logic_Arith_Sub_Uns_Uns_Slv = 687
+    Ieee_Std_Logic_Arith_Sub_Sgn_Sgn_Slv = 688
+    Ieee_Std_Logic_Arith_Sub_Uns_Sgn_Slv = 689
+    Ieee_Std_Logic_Arith_Sub_Sgn_Uns_Slv = 690
+    Ieee_Std_Logic_Arith_Sub_Uns_Int_Slv = 691
+    Ieee_Std_Logic_Arith_Sub_Int_Uns_Slv = 692
+    Ieee_Std_Logic_Arith_Sub_Sgn_Int_Slv = 693
+    Ieee_Std_Logic_Arith_Sub_Int_Sgn_Slv = 694
+    Ieee_Std_Logic_Arith_Sub_Uns_Log_Slv = 695
+    Ieee_Std_Logic_Arith_Sub_Log_Uns_Slv = 696
+    Ieee_Std_Logic_Arith_Sub_Sgn_Log_Slv = 697
+    Ieee_Std_Logic_Arith_Sub_Log_Sgn_Slv = 698
+    Ieee_Std_Logic_Arith_Lt_Uns_Uns = 699
+    Ieee_Std_Logic_Arith_Lt_Sgn_Sgn = 700
+    Ieee_Std_Logic_Arith_Lt_Uns_Sgn = 701
+    Ieee_Std_Logic_Arith_Lt_Sgn_Uns = 702
+    Ieee_Std_Logic_Arith_Lt_Uns_Int = 703
+    Ieee_Std_Logic_Arith_Lt_Int_Uns = 704
+    Ieee_Std_Logic_Arith_Lt_Sgn_Int = 705
+    Ieee_Std_Logic_Arith_Lt_Int_Sgn = 706
+    Ieee_Std_Logic_Arith_Le_Uns_Uns = 707
+    Ieee_Std_Logic_Arith_Le_Sgn_Sgn = 708
+    Ieee_Std_Logic_Arith_Le_Uns_Sgn = 709
+    Ieee_Std_Logic_Arith_Le_Sgn_Uns = 710
+    Ieee_Std_Logic_Arith_Le_Uns_Int = 711
+    Ieee_Std_Logic_Arith_Le_Int_Uns = 712
+    Ieee_Std_Logic_Arith_Le_Sgn_Int = 713
+    Ieee_Std_Logic_Arith_Le_Int_Sgn = 714
+    Ieee_Std_Logic_Arith_Gt_Uns_Uns = 715
+    Ieee_Std_Logic_Arith_Gt_Sgn_Sgn = 716
+    Ieee_Std_Logic_Arith_Gt_Uns_Sgn = 717
+    Ieee_Std_Logic_Arith_Gt_Sgn_Uns = 718
+    Ieee_Std_Logic_Arith_Gt_Uns_Int = 719
+    Ieee_Std_Logic_Arith_Gt_Int_Uns = 720
+    Ieee_Std_Logic_Arith_Gt_Sgn_Int = 721
+    Ieee_Std_Logic_Arith_Gt_Int_Sgn = 722
+    Ieee_Std_Logic_Arith_Ge_Uns_Uns = 723
+    Ieee_Std_Logic_Arith_Ge_Sgn_Sgn = 724
+    Ieee_Std_Logic_Arith_Ge_Uns_Sgn = 725
+    Ieee_Std_Logic_Arith_Ge_Sgn_Uns = 726
+    Ieee_Std_Logic_Arith_Ge_Uns_Int = 727
+    Ieee_Std_Logic_Arith_Ge_Int_Uns = 728
+    Ieee_Std_Logic_Arith_Ge_Sgn_Int = 729
+    Ieee_Std_Logic_Arith_Ge_Int_Sgn = 730
+    Ieee_Std_Logic_Arith_Eq_Uns_Uns = 731
+    Ieee_Std_Logic_Arith_Eq_Sgn_Sgn = 732
+    Ieee_Std_Logic_Arith_Eq_Uns_Sgn = 733
+    Ieee_Std_Logic_Arith_Eq_Sgn_Uns = 734
+    Ieee_Std_Logic_Arith_Eq_Uns_Int = 735
+    Ieee_Std_Logic_Arith_Eq_Int_Uns = 736
+    Ieee_Std_Logic_Arith_Eq_Sgn_Int = 737
+    Ieee_Std_Logic_Arith_Eq_Int_Sgn = 738
+    Ieee_Std_Logic_Arith_Ne_Uns_Uns = 739
+    Ieee_Std_Logic_Arith_Ne_Sgn_Sgn = 740
+    Ieee_Std_Logic_Arith_Ne_Uns_Sgn = 741
+    Ieee_Std_Logic_Arith_Ne_Sgn_Uns = 742
+    Ieee_Std_Logic_Arith_Ne_Uns_Int = 743
+    Ieee_Std_Logic_Arith_Ne_Int_Uns = 744
+    Ieee_Std_Logic_Arith_Ne_Sgn_Int = 745
+    Ieee_Std_Logic_Arith_Ne_Int_Sgn = 746
+    Ieee_Std_Logic_Misc_And_Reduce_Slv = 747
+    Ieee_Std_Logic_Misc_And_Reduce_Suv = 748
+    Ieee_Std_Logic_Misc_Nand_Reduce_Slv = 749
+    Ieee_Std_Logic_Misc_Nand_Reduce_Suv = 750
+    Ieee_Std_Logic_Misc_Or_Reduce_Slv = 751
+    Ieee_Std_Logic_Misc_Or_Reduce_Suv = 752
+    Ieee_Std_Logic_Misc_Nor_Reduce_Slv = 753
+    Ieee_Std_Logic_Misc_Nor_Reduce_Suv = 754
+    Ieee_Std_Logic_Misc_Xor_Reduce_Slv = 755
+    Ieee_Std_Logic_Misc_Xor_Reduce_Suv = 756
+    Ieee_Std_Logic_Misc_Xnor_Reduce_Slv = 757
+    Ieee_Std_Logic_Misc_Xnor_Reduce_Suv = 758
 
 
 @export
diff --git a/src/vhdl/vhdl-ieee-std_logic_arith.adb b/src/vhdl/vhdl-ieee-std_logic_arith.adb
index 0786f753e..b3f6e9c81 100644
--- a/src/vhdl/vhdl-ieee-std_logic_arith.adb
+++ b/src/vhdl/vhdl-ieee-std_logic_arith.adb
@@ -50,6 +50,12 @@ package body Vhdl.Ieee.Std_Logic_Arith is
       Iir_Predefined_Ieee_Std_Logic_Arith_Conv_Unsigned_Int,
       Iir_Predefined_Ieee_Std_Logic_Arith_Conv_Unsigned_Log);
 
+   Conv_Sgn_Patterns : constant Conv_Pattern_Type :=
+     (Iir_Predefined_Ieee_Std_Logic_Arith_Conv_Signed_Sgn,
+      Iir_Predefined_Ieee_Std_Logic_Arith_Conv_Signed_Uns,
+      Iir_Predefined_Ieee_Std_Logic_Arith_Conv_Signed_Int,
+      Iir_Predefined_Ieee_Std_Logic_Arith_Conv_Signed_Log);
+
    Conv_Int_Patterns : constant Conv_Pattern_Type :=
      (Iir_Predefined_Ieee_Std_Logic_Arith_Conv_Integer_Sgn,
       Iir_Predefined_Ieee_Std_Logic_Arith_Conv_Integer_Uns,
@@ -521,6 +527,8 @@ package body Vhdl.Ieee.Std_Logic_Arith is
                         Def := Handle_Bin (Mul_Patterns);
                      when Name_Conv_Unsigned =>
                         Def := Handle_Conv (Conv_Uns_Patterns);
+                     when Name_Conv_Signed =>
+                        Def := Handle_Conv (Conv_Sgn_Patterns);
                      when Name_Conv_Std_Logic_Vector =>
                         Def := Handle_Conv (Conv_Vec_Patterns);
                      when Name_Op_Less =>
diff --git a/src/vhdl/vhdl-nodes.ads b/src/vhdl/vhdl-nodes.ads
index 3d9561662..95676af3e 100644
--- a/src/vhdl/vhdl-nodes.ads
+++ b/src/vhdl/vhdl-nodes.ads
@@ -6289,6 +6289,11 @@ package Vhdl.Nodes is
       Iir_Predefined_Ieee_Std_Logic_Arith_Conv_Unsigned_Sgn,
       Iir_Predefined_Ieee_Std_Logic_Arith_Conv_Unsigned_Log,
 
+      Iir_Predefined_Ieee_Std_Logic_Arith_Conv_Signed_Int,
+      Iir_Predefined_Ieee_Std_Logic_Arith_Conv_Signed_Uns,
+      Iir_Predefined_Ieee_Std_Logic_Arith_Conv_Signed_Sgn,
+      Iir_Predefined_Ieee_Std_Logic_Arith_Conv_Signed_Log,
+
       Iir_Predefined_Ieee_Std_Logic_Arith_Conv_Integer_Int,
       Iir_Predefined_Ieee_Std_Logic_Arith_Conv_Integer_Uns,
       Iir_Predefined_Ieee_Std_Logic_Arith_Conv_Integer_Sgn,