diff --git a/builtins/util.m4 b/builtins/util.m4
index 0ea7763e..73998ddc 100644
--- a/builtins/util.m4
+++ b/builtins/util.m4
@@ -1497,10 +1497,12 @@ define <$1 x $2> @__atomic_compare_exchange_$3_global($2* %ptr, <$1 x $2> %cmp,
   per_lane($1, <$1 x MASK> %mask, `
    %cmp_LANE_ID = extractelement <$1 x $2> %cmp, i32 LANE
    %val_LANE_ID = extractelement <$1 x $2> %val, i32 LANE
+
+  ;; 3.5 and 3.6 code is the same since m4 has no OR and AND operators
   ifelse(LLVM_VERSION,LLVM_3_5,`
     %r_LANE_ID_t = cmpxchg $2 * %ptr, $2 %cmp_LANE_ID, $2 %val_LANE_ID seq_cst seq_cst
     %r_LANE_ID = extractvalue { $2, i1 } %r_LANE_ID_t, 0
-  ',LLVM_VERSION,LLVM_3_6,` ; this is duplicated for 3.6 since m4 has no OR and AND operators
+  ',LLVM_VERSION,LLVM_3_6,` 
     %r_LANE_ID_t = cmpxchg $2 * %ptr, $2 %cmp_LANE_ID, $2 %val_LANE_ID seq_cst seq_cst
     %r_LANE_ID = extractvalue { $2, i1 } %r_LANE_ID_t, 0
   ',`
@@ -1514,11 +1516,12 @@ define <$1 x $2> @__atomic_compare_exchange_$3_global($2* %ptr, <$1 x $2> %cmp,
 }
 
 define $2 @__atomic_compare_exchange_uniform_$3_global($2* %ptr, $2 %cmp,
-                                                       $2 %val) nounwind alwaysinline {
+                                                       $2 %val) nounwind alwaysinline {                                                           
+  ;; 3.5 and 3.6 code is the same since m4 has no OR and AND operators
   ifelse(LLVM_VERSION,LLVM_3_5,`
    %r_t = cmpxchg $2 * %ptr, $2 %cmp, $2 %val seq_cst seq_cst
    %r = extractvalue { $2, i1 } %r_t, 0
-  ',LLVM_VERSION,LLVM_3_6,` ; this is duplicated for 3.6 since m4 has no OR and AND operators
+  ',LLVM_VERSION,LLVM_3_6,`
    %r_t = cmpxchg $2 * %ptr, $2 %cmp, $2 %val seq_cst seq_cst
    %r = extractvalue { $2, i1 } %r_t, 0
   ',`