From 5ffb9ef36cff401b47c5e3d93d998a02c904c1df Mon Sep 17 00:00:00 2001
From: Florian Zaruba <fl.zaruba@be4web.net>
Date: Fri, 12 May 2017 10:42:03 +0200
Subject: [PATCH] :bug: Fix remove ALU operators

---
 include/ariane_pkg.svh |  2 +-
 src/alu.sv             | 20 ++++++++++----------
 2 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/include/ariane_pkg.svh b/include/ariane_pkg.svh
index 6443eb8ca..8522d7bd9 100644
--- a/include/ariane_pkg.svh
+++ b/include/ariane_pkg.svh
@@ -74,7 +74,7 @@ package ariane_pkg;
                                // jumps
                                JAL, JALR,
                                // set lower than operations
-                               SLTS, SLTU, SLETS, SLETU,
+                               SLTS, SLTU,
                                // CSR functions
                                MRET, SRET, URET, ECALL, CSR_WRITE, CSR_READ, CSR_SET, CSR_CLEAR,
                                // LSU functions
diff --git a/src/alu.sv b/src/alu.sv
index f11f75f97..cdef04797 100644
--- a/src/alu.sv
+++ b/src/alu.sv
@@ -59,8 +59,7 @@ module alu
       // COMPARATOR OPs
       EQ,    NE,
       GEU,   LTU,
-      GES,   LTS,
-      SLETS, SLETU: adder_op_b_negate = 1'b1;
+      GES,   LTS: adder_op_b_negate = 1'b1;
 
       default: ;
     endcase
@@ -147,7 +146,9 @@ module alu
     cmp_signed = 1'b0;
 
     unique case (operator_i)
-      GES, LTS: begin
+      GES,
+      LTS,
+      SLTS: begin
         cmp_signed = 1'b1;
       end
 
@@ -181,11 +182,9 @@ module alu
     unique case (operator_i)
       EQ:        cmp_result = is_equal;
       NE:        cmp_result = (~is_equal);
-      // GTS, GTU:  cmp_result = is_greater_equal && (~is_equal);
       GES, GEU:  cmp_result = is_greater_equal;
-      LTS, LTU:  cmp_result = (~is_greater_equal);
-      // LES, LEU:  cmp_result = (~is_greater_equal) || is_equal;
-
+      LTS, SLTS,
+      LTU, SLTU: cmp_result = (~is_greater_equal);
       default: ;
     endcase
   end
@@ -217,9 +216,10 @@ module alu
       SRLW, SRAW: result_o = {{32{shift_result32[31]}}, shift_result32[31:0]};
 
       // Comparison Operations
-      EQ,  NE,
-      LTU, GEU,
-      GES, LTS : result_o = {63'b0, cmp_result};
+      EQ,    NE,
+      GEU,   LTU,
+      LTS,   GES,
+      SLTS,  SLTU: result_o = {63'b0, cmp_result};
 
       default: ; // default case to suppress unique warning
     endcase