[InstSimplify] use ConstantRange to simplify more and-of-icmps

We can simplify (and (icmp X, C1), (icmp X, C2)) to one of the icmps in many cases. 
I had to check some of these with Alive to prove to myself it's right, but everything 
seems to check out. Eg, the code in instcombine was completely ignoring predicates with 
mismatched signedness.

Handling or-of-icmps would be a follow-up step.

Differential Revision: https://reviews.llvm.org/D32143

llvm-svn: 301260

1 files changed, 84 insertions, 252 deletions

diff --git a/llvm/test/Transforms/InstSimplify/icmp-ranges.ll b/llvm/test/Transforms/InstSimplify/icmp-ranges.ll
index dcbbe0bc7fb..292be6a8a55 100644
--- a/llvm/test/Transforms/InstSimplify/icmp-ranges.ll
+++ b/llvm/test/Transforms/InstSimplify/icmp-ranges.ll
@@ -21,9 +21,7 @@ define i1 @and_eq_eq(i8 %x) {
 define i1 @and_eq_ne(i8 %x) {
 ; CHECK-LABEL: @and_eq_ne(
 ; CHECK-NEXT:    [[A:%.*]] = icmp eq i8 %x, 13
-; CHECK-NEXT:    [[B:%.*]] = icmp ne i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp eq i8 %x, 13
   %b = icmp ne i8 %x, 17
@@ -60,9 +58,7 @@ define i1 @and_eq_sgt(i8 %x) {
 define i1 @and_eq_sle(i8 %x) {
 ; CHECK-LABEL: @and_eq_sle(
 ; CHECK-NEXT:    [[A:%.*]] = icmp eq i8 %x, 13
-; CHECK-NEXT:    [[B:%.*]] = icmp sle i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp eq i8 %x, 13
   %b = icmp sle i8 %x, 17
@@ -75,9 +71,7 @@ define i1 @and_eq_sle(i8 %x) {
 define i1 @and_eq_slt(i8 %x) {
 ; CHECK-LABEL: @and_eq_slt(
 ; CHECK-NEXT:    [[A:%.*]] = icmp eq i8 %x, 13
-; CHECK-NEXT:    [[B:%.*]] = icmp slt i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp eq i8 %x, 13
   %b = icmp slt i8 %x, 17
@@ -114,9 +108,7 @@ define i1 @and_eq_ugt(i8 %x) {
 define i1 @and_eq_ule(i8 %x) {
 ; CHECK-LABEL: @and_eq_ule(
 ; CHECK-NEXT:    [[A:%.*]] = icmp eq i8 %x, 13
-; CHECK-NEXT:    [[B:%.*]] = icmp ule i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp eq i8 %x, 13
   %b = icmp ule i8 %x, 17
@@ -129,9 +121,7 @@ define i1 @and_eq_ule(i8 %x) {
 define i1 @and_eq_ult(i8 %x) {
 ; CHECK-LABEL: @and_eq_ult(
 ; CHECK-NEXT:    [[A:%.*]] = icmp eq i8 %x, 13
-; CHECK-NEXT:    [[B:%.*]] = icmp ult i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp eq i8 %x, 13
   %b = icmp ult i8 %x, 17
@@ -144,10 +134,8 @@ define i1 @and_eq_ult(i8 %x) {
 
 define i1 @and_ne_eq(i8 %x) {
 ; CHECK-LABEL: @and_ne_eq(
-; CHECK-NEXT:    [[A:%.*]] = icmp ne i8 %x, 13
 ; CHECK-NEXT:    [[B:%.*]] = icmp eq i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp ne i8 %x, 13
   %b = icmp eq i8 %x, 17
@@ -174,10 +162,8 @@ define i1 @and_ne_ne(i8 %x) {
 
 define i1 @and_ne_sge(i8 %x) {
 ; CHECK-LABEL: @and_ne_sge(
-; CHECK-NEXT:    [[A:%.*]] = icmp ne i8 %x, 13
 ; CHECK-NEXT:    [[B:%.*]] = icmp sge i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp ne i8 %x, 13
   %b = icmp sge i8 %x, 17
@@ -189,10 +175,8 @@ define i1 @and_ne_sge(i8 %x) {
 
 define i1 @and_ne_sgt(i8 %x) {
 ; CHECK-LABEL: @and_ne_sgt(
-; CHECK-NEXT:    [[A:%.*]] = icmp ne i8 %x, 13
 ; CHECK-NEXT:    [[B:%.*]] = icmp sgt i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp ne i8 %x, 13
   %b = icmp sgt i8 %x, 17
@@ -234,10 +218,8 @@ define i1 @and_ne_slt(i8 %x) {
 
 define i1 @and_ne_uge(i8 %x) {
 ; CHECK-LABEL: @and_ne_uge(
-; CHECK-NEXT:    [[A:%.*]] = icmp ne i8 %x, 13
 ; CHECK-NEXT:    [[B:%.*]] = icmp uge i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp ne i8 %x, 13
   %b = icmp uge i8 %x, 17
@@ -249,10 +231,8 @@ define i1 @and_ne_uge(i8 %x) {
 
 define i1 @and_ne_ugt(i8 %x) {
 ; CHECK-LABEL: @and_ne_ugt(
-; CHECK-NEXT:    [[A:%.*]] = icmp ne i8 %x, 13
 ; CHECK-NEXT:    [[B:%.*]] = icmp ugt i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp ne i8 %x, 13
   %b = icmp ugt i8 %x, 17
@@ -295,10 +275,8 @@ define i1 @and_ne_ult(i8 %x) {
 
 define i1 @and_sge_eq(i8 %x) {
 ; CHECK-LABEL: @and_sge_eq(
-; CHECK-NEXT:    [[A:%.*]] = icmp sge i8 %x, 13
 ; CHECK-NEXT:    [[B:%.*]] = icmp eq i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp sge i8 %x, 13
   %b = icmp eq i8 %x, 17
@@ -325,10 +303,8 @@ define i1 @and_sge_ne(i8 %x) {
 
 define i1 @and_sge_sge(i8 %x) {
 ; CHECK-LABEL: @and_sge_sge(
-; CHECK-NEXT:    [[A:%.*]] = icmp sge i8 %x, 13
 ; CHECK-NEXT:    [[B:%.*]] = icmp sge i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp sge i8 %x, 13
   %b = icmp sge i8 %x, 17
@@ -340,10 +316,8 @@ define i1 @and_sge_sge(i8 %x) {
 
 define i1 @and_sge_sgt(i8 %x) {
 ; CHECK-LABEL: @and_sge_sgt(
-; CHECK-NEXT:    [[A:%.*]] = icmp sge i8 %x, 13
 ; CHECK-NEXT:    [[B:%.*]] = icmp sgt i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp sge i8 %x, 13
   %b = icmp sgt i8 %x, 17
@@ -446,10 +420,8 @@ define i1 @and_sge_ult(i8 %x) {
 
 define i1 @and_sgt_eq(i8 %x) {
 ; CHECK-LABEL: @and_sgt_eq(
-; CHECK-NEXT:    [[A:%.*]] = icmp sgt i8 %x, 13
 ; CHECK-NEXT:    [[B:%.*]] = icmp eq i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp sgt i8 %x, 13
   %b = icmp eq i8 %x, 17
@@ -476,10 +448,8 @@ define i1 @and_sgt_ne(i8 %x) {
 
 define i1 @and_sgt_sge(i8 %x) {
 ; CHECK-LABEL: @and_sgt_sge(
-; CHECK-NEXT:    [[A:%.*]] = icmp sgt i8 %x, 13
 ; CHECK-NEXT:    [[B:%.*]] = icmp sge i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp sgt i8 %x, 13
   %b = icmp sge i8 %x, 17
@@ -491,10 +461,8 @@ define i1 @and_sgt_sge(i8 %x) {
 
 define i1 @and_sgt_sgt(i8 %x) {
 ; CHECK-LABEL: @and_sgt_sgt(
-; CHECK-NEXT:    [[A:%.*]] = icmp sgt i8 %x, 13
 ; CHECK-NEXT:    [[B:%.*]] = icmp sgt i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp sgt i8 %x, 13
   %b = icmp sgt i8 %x, 17
@@ -610,9 +578,7 @@ define i1 @and_sle_eq(i8 %x) {
 define i1 @and_sle_ne(i8 %x) {
 ; CHECK-LABEL: @and_sle_ne(
 ; CHECK-NEXT:    [[A:%.*]] = icmp sle i8 %x, 13
-; CHECK-NEXT:    [[B:%.*]] = icmp ne i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp sle i8 %x, 13
   %b = icmp ne i8 %x, 17
@@ -649,9 +615,7 @@ define i1 @and_sle_sgt(i8 %x) {
 define i1 @and_sle_sle(i8 %x) {
 ; CHECK-LABEL: @and_sle_sle(
 ; CHECK-NEXT:    [[A:%.*]] = icmp sle i8 %x, 13
-; CHECK-NEXT:    [[B:%.*]] = icmp sle i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp sle i8 %x, 13
   %b = icmp sle i8 %x, 17
@@ -664,9 +628,7 @@ define i1 @and_sle_sle(i8 %x) {
 define i1 @and_sle_slt(i8 %x) {
 ; CHECK-LABEL: @and_sle_slt(
 ; CHECK-NEXT:    [[A:%.*]] = icmp sle i8 %x, 13
-; CHECK-NEXT:    [[B:%.*]] = icmp slt i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp sle i8 %x, 13
   %b = icmp slt i8 %x, 17
@@ -752,9 +714,7 @@ define i1 @and_slt_eq(i8 %x) {
 define i1 @and_slt_ne(i8 %x) {
 ; CHECK-LABEL: @and_slt_ne(
 ; CHECK-NEXT:    [[A:%.*]] = icmp slt i8 %x, 13
-; CHECK-NEXT:    [[B:%.*]] = icmp ne i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp slt i8 %x, 13
   %b = icmp ne i8 %x, 17
@@ -791,9 +751,7 @@ define i1 @and_slt_sgt(i8 %x) {
 define i1 @and_slt_sle(i8 %x) {
 ; CHECK-LABEL: @and_slt_sle(
 ; CHECK-NEXT:    [[A:%.*]] = icmp slt i8 %x, 13
-; CHECK-NEXT:    [[B:%.*]] = icmp sle i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp slt i8 %x, 13
   %b = icmp sle i8 %x, 17
@@ -806,9 +764,7 @@ define i1 @and_slt_sle(i8 %x) {
 define i1 @and_slt_slt(i8 %x) {
 ; CHECK-LABEL: @and_slt_slt(
 ; CHECK-NEXT:    [[A:%.*]] = icmp slt i8 %x, 13
-; CHECK-NEXT:    [[B:%.*]] = icmp slt i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp slt i8 %x, 13
   %b = icmp slt i8 %x, 17
@@ -881,10 +837,8 @@ define i1 @and_slt_ult(i8 %x) {
 
 define i1 @and_uge_eq(i8 %x) {
 ; CHECK-LABEL: @and_uge_eq(
-; CHECK-NEXT:    [[A:%.*]] = icmp uge i8 %x, 13
 ; CHECK-NEXT:    [[B:%.*]] = icmp eq i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp uge i8 %x, 13
   %b = icmp eq i8 %x, 17
@@ -911,10 +865,8 @@ define i1 @and_uge_ne(i8 %x) {
 
 define i1 @and_uge_sge(i8 %x) {
 ; CHECK-LABEL: @and_uge_sge(
-; CHECK-NEXT:    [[A:%.*]] = icmp uge i8 %x, 13
 ; CHECK-NEXT:    [[B:%.*]] = icmp sge i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp uge i8 %x, 13
   %b = icmp sge i8 %x, 17
@@ -926,10 +878,8 @@ define i1 @and_uge_sge(i8 %x) {
 
 define i1 @and_uge_sgt(i8 %x) {
 ; CHECK-LABEL: @and_uge_sgt(
-; CHECK-NEXT:    [[A:%.*]] = icmp uge i8 %x, 13
 ; CHECK-NEXT:    [[B:%.*]] = icmp sgt i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp uge i8 %x, 13
   %b = icmp sgt i8 %x, 17
@@ -971,10 +921,8 @@ define i1 @and_uge_slt(i8 %x) {
 
 define i1 @and_uge_uge(i8 %x) {
 ; CHECK-LABEL: @and_uge_uge(
-; CHECK-NEXT:    [[A:%.*]] = icmp uge i8 %x, 13
 ; CHECK-NEXT:    [[B:%.*]] = icmp uge i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp uge i8 %x, 13
   %b = icmp uge i8 %x, 17
@@ -986,10 +934,8 @@ define i1 @and_uge_uge(i8 %x) {
 
 define i1 @and_uge_ugt(i8 %x) {
 ; CHECK-LABEL: @and_uge_ugt(
-; CHECK-NEXT:    [[A:%.*]] = icmp uge i8 %x, 13
 ; CHECK-NEXT:    [[B:%.*]] = icmp ugt i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp uge i8 %x, 13
   %b = icmp ugt i8 %x, 17
@@ -1032,10 +978,8 @@ define i1 @and_uge_ult(i8 %x) {
 
 define i1 @and_ugt_eq(i8 %x) {
 ; CHECK-LABEL: @and_ugt_eq(
-; CHECK-NEXT:    [[A:%.*]] = icmp ugt i8 %x, 13
 ; CHECK-NEXT:    [[B:%.*]] = icmp eq i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp ugt i8 %x, 13
   %b = icmp eq i8 %x, 17
@@ -1062,10 +1006,8 @@ define i1 @and_ugt_ne(i8 %x) {
 
 define i1 @and_ugt_sge(i8 %x) {
 ; CHECK-LABEL: @and_ugt_sge(
-; CHECK-NEXT:    [[A:%.*]] = icmp ugt i8 %x, 13
 ; CHECK-NEXT:    [[B:%.*]] = icmp sge i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp ugt i8 %x, 13
   %b = icmp sge i8 %x, 17
@@ -1077,10 +1019,8 @@ define i1 @and_ugt_sge(i8 %x) {
 
 define i1 @and_ugt_sgt(i8 %x) {
 ; CHECK-LABEL: @and_ugt_sgt(
-; CHECK-NEXT:    [[A:%.*]] = icmp ugt i8 %x, 13
 ; CHECK-NEXT:    [[B:%.*]] = icmp sgt i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp ugt i8 %x, 13
   %b = icmp sgt i8 %x, 17
@@ -1122,10 +1062,8 @@ define i1 @and_ugt_slt(i8 %x) {
 
 define i1 @and_ugt_uge(i8 %x) {
 ; CHECK-LABEL: @and_ugt_uge(
-; CHECK-NEXT:    [[A:%.*]] = icmp ugt i8 %x, 13
 ; CHECK-NEXT:    [[B:%.*]] = icmp uge i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp ugt i8 %x, 13
   %b = icmp uge i8 %x, 17
@@ -1137,10 +1075,8 @@ define i1 @and_ugt_uge(i8 %x) {
 
 define i1 @and_ugt_ugt(i8 %x) {
 ; CHECK-LABEL: @and_ugt_ugt(
-; CHECK-NEXT:    [[A:%.*]] = icmp ugt i8 %x, 13
 ; CHECK-NEXT:    [[B:%.*]] = icmp ugt i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp ugt i8 %x, 13
   %b = icmp ugt i8 %x, 17
@@ -1196,9 +1132,7 @@ define i1 @and_ule_eq(i8 %x) {
 define i1 @and_ule_ne(i8 %x) {
 ; CHECK-LABEL: @and_ule_ne(
 ; CHECK-NEXT:    [[A:%.*]] = icmp ule i8 %x, 13
-; CHECK-NEXT:    [[B:%.*]] = icmp ne i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp ule i8 %x, 13
   %b = icmp ne i8 %x, 17
@@ -1235,9 +1169,7 @@ define i1 @and_ule_sgt(i8 %x) {
 define i1 @and_ule_sle(i8 %x) {
 ; CHECK-LABEL: @and_ule_sle(
 ; CHECK-NEXT:    [[A:%.*]] = icmp ule i8 %x, 13
-; CHECK-NEXT:    [[B:%.*]] = icmp sle i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp ule i8 %x, 13
   %b = icmp sle i8 %x, 17
@@ -1250,9 +1182,7 @@ define i1 @and_ule_sle(i8 %x) {
 define i1 @and_ule_slt(i8 %x) {
 ; CHECK-LABEL: @and_ule_slt(
 ; CHECK-NEXT:    [[A:%.*]] = icmp ule i8 %x, 13
-; CHECK-NEXT:    [[B:%.*]] = icmp slt i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp ule i8 %x, 13
   %b = icmp slt i8 %x, 17
@@ -1289,9 +1219,7 @@ define i1 @and_ule_ugt(i8 %x) {
 define i1 @and_ule_ule(i8 %x) {
 ; CHECK-LABEL: @and_ule_ule(
 ; CHECK-NEXT:    [[A:%.*]] = icmp ule i8 %x, 13
-; CHECK-NEXT:    [[B:%.*]] = icmp ule i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp ule i8 %x, 13
   %b = icmp ule i8 %x, 17
@@ -1304,9 +1232,7 @@ define i1 @and_ule_ule(i8 %x) {
 define i1 @and_ule_ult(i8 %x) {
 ; CHECK-LABEL: @and_ule_ult(
 ; CHECK-NEXT:    [[A:%.*]] = icmp ule i8 %x, 13
-; CHECK-NEXT:    [[B:%.*]] = icmp ult i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp ule i8 %x, 13
   %b = icmp ult i8 %x, 17
@@ -1332,9 +1258,7 @@ define i1 @and_ult_eq(i8 %x) {
 define i1 @and_ult_ne(i8 %x) {
 ; CHECK-LABEL: @and_ult_ne(
 ; CHECK-NEXT:    [[A:%.*]] = icmp ult i8 %x, 13
-; CHECK-NEXT:    [[B:%.*]] = icmp ne i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp ult i8 %x, 13
   %b = icmp ne i8 %x, 17
@@ -1371,9 +1295,7 @@ define i1 @and_ult_sgt(i8 %x) {
 define i1 @and_ult_sle(i8 %x) {
 ; CHECK-LABEL: @and_ult_sle(
 ; CHECK-NEXT:    [[A:%.*]] = icmp ult i8 %x, 13
-; CHECK-NEXT:    [[B:%.*]] = icmp sle i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp ult i8 %x, 13
   %b = icmp sle i8 %x, 17
@@ -1386,9 +1308,7 @@ define i1 @and_ult_sle(i8 %x) {
 define i1 @and_ult_slt(i8 %x) {
 ; CHECK-LABEL: @and_ult_slt(
 ; CHECK-NEXT:    [[A:%.*]] = icmp ult i8 %x, 13
-; CHECK-NEXT:    [[B:%.*]] = icmp slt i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp ult i8 %x, 13
   %b = icmp slt i8 %x, 17
@@ -1425,9 +1345,7 @@ define i1 @and_ult_ugt(i8 %x) {
 define i1 @and_ult_ule(i8 %x) {
 ; CHECK-LABEL: @and_ult_ule(
 ; CHECK-NEXT:    [[A:%.*]] = icmp ult i8 %x, 13
-; CHECK-NEXT:    [[B:%.*]] = icmp ule i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp ult i8 %x, 13
   %b = icmp ule i8 %x, 17
@@ -1440,9 +1358,7 @@ define i1 @and_ult_ule(i8 %x) {
 define i1 @and_ult_ult(i8 %x) {
 ; CHECK-LABEL: @and_ult_ult(
 ; CHECK-NEXT:    [[A:%.*]] = icmp ult i8 %x, 13
-; CHECK-NEXT:    [[B:%.*]] = icmp ult i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp ult i8 %x, 13
   %b = icmp ult i8 %x, 17
@@ -1468,9 +1384,7 @@ define i1 @and_eq_eq_swap(i8 %x) {
 define i1 @and_eq_ne_swap(i8 %x) {
 ; CHECK-LABEL: @and_eq_ne_swap(
 ; CHECK-NEXT:    [[A:%.*]] = icmp eq i8 %x, 23
-; CHECK-NEXT:    [[B:%.*]] = icmp ne i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp eq i8 %x, 23
   %b = icmp ne i8 %x, 17
@@ -1483,9 +1397,7 @@ define i1 @and_eq_ne_swap(i8 %x) {
 define i1 @and_eq_sge_swap(i8 %x) {
 ; CHECK-LABEL: @and_eq_sge_swap(
 ; CHECK-NEXT:    [[A:%.*]] = icmp eq i8 %x, 23
-; CHECK-NEXT:    [[B:%.*]] = icmp sge i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp eq i8 %x, 23
   %b = icmp sge i8 %x, 17
@@ -1498,9 +1410,7 @@ define i1 @and_eq_sge_swap(i8 %x) {
 define i1 @and_eq_sgt_swap(i8 %x) {
 ; CHECK-LABEL: @and_eq_sgt_swap(
 ; CHECK-NEXT:    [[A:%.*]] = icmp eq i8 %x, 23
-; CHECK-NEXT:    [[B:%.*]] = icmp sgt i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp eq i8 %x, 23
   %b = icmp sgt i8 %x, 17
@@ -1537,9 +1447,7 @@ define i1 @and_eq_slt_swap(i8 %x) {
 define i1 @and_eq_uge_swap(i8 %x) {
 ; CHECK-LABEL: @and_eq_uge_swap(
 ; CHECK-NEXT:    [[A:%.*]] = icmp eq i8 %x, 23
-; CHECK-NEXT:    [[B:%.*]] = icmp uge i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp eq i8 %x, 23
   %b = icmp uge i8 %x, 17
@@ -1552,9 +1460,7 @@ define i1 @and_eq_uge_swap(i8 %x) {
 define i1 @and_eq_ugt_swap(i8 %x) {
 ; CHECK-LABEL: @and_eq_ugt_swap(
 ; CHECK-NEXT:    [[A:%.*]] = icmp eq i8 %x, 23
-; CHECK-NEXT:    [[B:%.*]] = icmp ugt i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp eq i8 %x, 23
   %b = icmp ugt i8 %x, 17
@@ -1591,10 +1497,8 @@ define i1 @and_eq_ult_swap(i8 %x) {
 
 define i1 @and_ne_eq_swap(i8 %x) {
 ; CHECK-LABEL: @and_ne_eq_swap(
-; CHECK-NEXT:    [[A:%.*]] = icmp ne i8 %x, 23
 ; CHECK-NEXT:    [[B:%.*]] = icmp eq i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp ne i8 %x, 23
   %b = icmp eq i8 %x, 17
@@ -1651,10 +1555,8 @@ define i1 @and_ne_sgt_swap(i8 %x) {
 
 define i1 @and_ne_sle_swap(i8 %x) {
 ; CHECK-LABEL: @and_ne_sle_swap(
-; CHECK-NEXT:    [[A:%.*]] = icmp ne i8 %x, 23
 ; CHECK-NEXT:    [[B:%.*]] = icmp sle i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp ne i8 %x, 23
   %b = icmp sle i8 %x, 17
@@ -1666,10 +1568,8 @@ define i1 @and_ne_sle_swap(i8 %x) {
 
 define i1 @and_ne_slt_swap(i8 %x) {
 ; CHECK-LABEL: @and_ne_slt_swap(
-; CHECK-NEXT:    [[A:%.*]] = icmp ne i8 %x, 23
 ; CHECK-NEXT:    [[B:%.*]] = icmp slt i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp ne i8 %x, 23
   %b = icmp slt i8 %x, 17
@@ -1711,10 +1611,8 @@ define i1 @and_ne_ugt_swap(i8 %x) {
 
 define i1 @and_ne_ule_swap(i8 %x) {
 ; CHECK-LABEL: @and_ne_ule_swap(
-; CHECK-NEXT:    [[A:%.*]] = icmp ne i8 %x, 23
 ; CHECK-NEXT:    [[B:%.*]] = icmp ule i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp ne i8 %x, 23
   %b = icmp ule i8 %x, 17
@@ -1726,10 +1624,8 @@ define i1 @and_ne_ule_swap(i8 %x) {
 
 define i1 @and_ne_ult_swap(i8 %x) {
 ; CHECK-LABEL: @and_ne_ult_swap(
-; CHECK-NEXT:    [[A:%.*]] = icmp ne i8 %x, 23
 ; CHECK-NEXT:    [[B:%.*]] = icmp ult i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp ne i8 %x, 23
   %b = icmp ult i8 %x, 17
@@ -1755,9 +1651,7 @@ define i1 @and_sge_eq_swap(i8 %x) {
 define i1 @and_sge_ne_swap(i8 %x) {
 ; CHECK-LABEL: @and_sge_ne_swap(
 ; CHECK-NEXT:    [[A:%.*]] = icmp sge i8 %x, 23
-; CHECK-NEXT:    [[B:%.*]] = icmp ne i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp sge i8 %x, 23
   %b = icmp ne i8 %x, 17
@@ -1770,9 +1664,7 @@ define i1 @and_sge_ne_swap(i8 %x) {
 define i1 @and_sge_sge_swap(i8 %x) {
 ; CHECK-LABEL: @and_sge_sge_swap(
 ; CHECK-NEXT:    [[A:%.*]] = icmp sge i8 %x, 23
-; CHECK-NEXT:    [[B:%.*]] = icmp sge i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp sge i8 %x, 23
   %b = icmp sge i8 %x, 17
@@ -1785,9 +1677,7 @@ define i1 @and_sge_sge_swap(i8 %x) {
 define i1 @and_sge_sgt_swap(i8 %x) {
 ; CHECK-LABEL: @and_sge_sgt_swap(
 ; CHECK-NEXT:    [[A:%.*]] = icmp sge i8 %x, 23
-; CHECK-NEXT:    [[B:%.*]] = icmp sgt i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp sge i8 %x, 23
   %b = icmp sgt i8 %x, 17
@@ -1824,9 +1714,7 @@ define i1 @and_sge_slt_swap(i8 %x) {
 define i1 @and_sge_uge_swap(i8 %x) {
 ; CHECK-LABEL: @and_sge_uge_swap(
 ; CHECK-NEXT:    [[A:%.*]] = icmp sge i8 %x, 23
-; CHECK-NEXT:    [[B:%.*]] = icmp uge i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp sge i8 %x, 23
   %b = icmp uge i8 %x, 17
@@ -1839,9 +1727,7 @@ define i1 @and_sge_uge_swap(i8 %x) {
 define i1 @and_sge_ugt_swap(i8 %x) {
 ; CHECK-LABEL: @and_sge_ugt_swap(
 ; CHECK-NEXT:    [[A:%.*]] = icmp sge i8 %x, 23
-; CHECK-NEXT:    [[B:%.*]] = icmp ugt i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp sge i8 %x, 23
   %b = icmp ugt i8 %x, 17
@@ -1891,9 +1777,7 @@ define i1 @and_sgt_eq_swap(i8 %x) {
 define i1 @and_sgt_ne_swap(i8 %x) {
 ; CHECK-LABEL: @and_sgt_ne_swap(
 ; CHECK-NEXT:    [[A:%.*]] = icmp sgt i8 %x, 23
-; CHECK-NEXT:    [[B:%.*]] = icmp ne i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp sgt i8 %x, 23
   %b = icmp ne i8 %x, 17
@@ -1906,9 +1790,7 @@ define i1 @and_sgt_ne_swap(i8 %x) {
 define i1 @and_sgt_sge_swap(i8 %x) {
 ; CHECK-LABEL: @and_sgt_sge_swap(
 ; CHECK-NEXT:    [[A:%.*]] = icmp sgt i8 %x, 23
-; CHECK-NEXT:    [[B:%.*]] = icmp sge i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp sgt i8 %x, 23
   %b = icmp sge i8 %x, 17
@@ -1921,9 +1803,7 @@ define i1 @and_sgt_sge_swap(i8 %x) {
 define i1 @and_sgt_sgt_swap(i8 %x) {
 ; CHECK-LABEL: @and_sgt_sgt_swap(
 ; CHECK-NEXT:    [[A:%.*]] = icmp sgt i8 %x, 23
-; CHECK-NEXT:    [[B:%.*]] = icmp sgt i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp sgt i8 %x, 23
   %b = icmp sgt i8 %x, 17
@@ -1960,9 +1840,7 @@ define i1 @and_sgt_slt_swap(i8 %x) {
 define i1 @and_sgt_uge_swap(i8 %x) {
 ; CHECK-LABEL: @and_sgt_uge_swap(
 ; CHECK-NEXT:    [[A:%.*]] = icmp sgt i8 %x, 23
-; CHECK-NEXT:    [[B:%.*]] = icmp uge i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp sgt i8 %x, 23
   %b = icmp uge i8 %x, 17
@@ -1975,9 +1853,7 @@ define i1 @and_sgt_uge_swap(i8 %x) {
 define i1 @and_sgt_ugt_swap(i8 %x) {
 ; CHECK-LABEL: @and_sgt_ugt_swap(
 ; CHECK-NEXT:    [[A:%.*]] = icmp sgt i8 %x, 23
-; CHECK-NEXT:    [[B:%.*]] = icmp ugt i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp sgt i8 %x, 23
   %b = icmp ugt i8 %x, 17
@@ -2014,10 +1890,8 @@ define i1 @and_sgt_ult_swap(i8 %x) {
 
 define i1 @and_sle_eq_swap(i8 %x) {
 ; CHECK-LABEL: @and_sle_eq_swap(
-; CHECK-NEXT:    [[A:%.*]] = icmp sle i8 %x, 23
 ; CHECK-NEXT:    [[B:%.*]] = icmp eq i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp sle i8 %x, 23
   %b = icmp eq i8 %x, 17
@@ -2074,10 +1948,8 @@ define i1 @and_sle_sgt_swap(i8 %x) {
 
 define i1 @and_sle_sle_swap(i8 %x) {
 ; CHECK-LABEL: @and_sle_sle_swap(
-; CHECK-NEXT:    [[A:%.*]] = icmp sle i8 %x, 23
 ; CHECK-NEXT:    [[B:%.*]] = icmp sle i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp sle i8 %x, 23
   %b = icmp sle i8 %x, 17
@@ -2089,10 +1961,8 @@ define i1 @and_sle_sle_swap(i8 %x) {
 
 define i1 @and_sle_slt_swap(i8 %x) {
 ; CHECK-LABEL: @and_sle_slt_swap(
-; CHECK-NEXT:    [[A:%.*]] = icmp sle i8 %x, 23
 ; CHECK-NEXT:    [[B:%.*]] = icmp slt i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp sle i8 %x, 23
   %b = icmp slt i8 %x, 17
@@ -2134,10 +2004,8 @@ define i1 @and_sle_ugt_swap(i8 %x) {
 
 define i1 @and_sle_ule_swap(i8 %x) {
 ; CHECK-LABEL: @and_sle_ule_swap(
-; CHECK-NEXT:    [[A:%.*]] = icmp sle i8 %x, 23
 ; CHECK-NEXT:    [[B:%.*]] = icmp ule i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp sle i8 %x, 23
   %b = icmp ule i8 %x, 17
@@ -2149,10 +2017,8 @@ define i1 @and_sle_ule_swap(i8 %x) {
 
 define i1 @and_sle_ult_swap(i8 %x) {
 ; CHECK-LABEL: @and_sle_ult_swap(
-; CHECK-NEXT:    [[A:%.*]] = icmp sle i8 %x, 23
 ; CHECK-NEXT:    [[B:%.*]] = icmp ult i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp sle i8 %x, 23
   %b = icmp ult i8 %x, 17
@@ -2165,10 +2031,8 @@ define i1 @and_sle_ult_swap(i8 %x) {
 
 define i1 @and_slt_eq_swap(i8 %x) {
 ; CHECK-LABEL: @and_slt_eq_swap(
-; CHECK-NEXT:    [[A:%.*]] = icmp slt i8 %x, 23
 ; CHECK-NEXT:    [[B:%.*]] = icmp eq i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp slt i8 %x, 23
   %b = icmp eq i8 %x, 17
@@ -2225,10 +2089,8 @@ define i1 @and_slt_sgt_swap(i8 %x) {
 
 define i1 @and_slt_sle_swap(i8 %x) {
 ; CHECK-LABEL: @and_slt_sle_swap(
-; CHECK-NEXT:    [[A:%.*]] = icmp slt i8 %x, 23
 ; CHECK-NEXT:    [[B:%.*]] = icmp sle i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp slt i8 %x, 23
   %b = icmp sle i8 %x, 17
@@ -2240,10 +2102,8 @@ define i1 @and_slt_sle_swap(i8 %x) {
 
 define i1 @and_slt_slt_swap(i8 %x) {
 ; CHECK-LABEL: @and_slt_slt_swap(
-; CHECK-NEXT:    [[A:%.*]] = icmp slt i8 %x, 23
 ; CHECK-NEXT:    [[B:%.*]] = icmp slt i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp slt i8 %x, 23
   %b = icmp slt i8 %x, 17
@@ -2285,10 +2145,8 @@ define i1 @and_slt_ugt_swap(i8 %x) {
 
 define i1 @and_slt_ule_swap(i8 %x) {
 ; CHECK-LABEL: @and_slt_ule_swap(
-; CHECK-NEXT:    [[A:%.*]] = icmp slt i8 %x, 23
 ; CHECK-NEXT:    [[B:%.*]] = icmp ule i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp slt i8 %x, 23
   %b = icmp ule i8 %x, 17
@@ -2300,10 +2158,8 @@ define i1 @and_slt_ule_swap(i8 %x) {
 
 define i1 @and_slt_ult_swap(i8 %x) {
 ; CHECK-LABEL: @and_slt_ult_swap(
-; CHECK-NEXT:    [[A:%.*]] = icmp slt i8 %x, 23
 ; CHECK-NEXT:    [[B:%.*]] = icmp ult i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp slt i8 %x, 23
   %b = icmp ult i8 %x, 17
@@ -2329,9 +2185,7 @@ define i1 @and_uge_eq_swap(i8 %x) {
 define i1 @and_uge_ne_swap(i8 %x) {
 ; CHECK-LABEL: @and_uge_ne_swap(
 ; CHECK-NEXT:    [[A:%.*]] = icmp uge i8 %x, 23
-; CHECK-NEXT:    [[B:%.*]] = icmp ne i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp uge i8 %x, 23
   %b = icmp ne i8 %x, 17
@@ -2404,9 +2258,7 @@ define i1 @and_uge_slt_swap(i8 %x) {
 define i1 @and_uge_uge_swap(i8 %x) {
 ; CHECK-LABEL: @and_uge_uge_swap(
 ; CHECK-NEXT:    [[A:%.*]] = icmp uge i8 %x, 23
-; CHECK-NEXT:    [[B:%.*]] = icmp uge i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp uge i8 %x, 23
   %b = icmp uge i8 %x, 17
@@ -2419,9 +2271,7 @@ define i1 @and_uge_uge_swap(i8 %x) {
 define i1 @and_uge_ugt_swap(i8 %x) {
 ; CHECK-LABEL: @and_uge_ugt_swap(
 ; CHECK-NEXT:    [[A:%.*]] = icmp uge i8 %x, 23
-; CHECK-NEXT:    [[B:%.*]] = icmp ugt i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp uge i8 %x, 23
   %b = icmp ugt i8 %x, 17
@@ -2471,9 +2321,7 @@ define i1 @and_ugt_eq_swap(i8 %x) {
 define i1 @and_ugt_ne_swap(i8 %x) {
 ; CHECK-LABEL: @and_ugt_ne_swap(
 ; CHECK-NEXT:    [[A:%.*]] = icmp ugt i8 %x, 23
-; CHECK-NEXT:    [[B:%.*]] = icmp ne i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp ugt i8 %x, 23
   %b = icmp ne i8 %x, 17
@@ -2546,9 +2394,7 @@ define i1 @and_ugt_slt_swap(i8 %x) {
 define i1 @and_ugt_uge_swap(i8 %x) {
 ; CHECK-LABEL: @and_ugt_uge_swap(
 ; CHECK-NEXT:    [[A:%.*]] = icmp ugt i8 %x, 23
-; CHECK-NEXT:    [[B:%.*]] = icmp uge i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp ugt i8 %x, 23
   %b = icmp uge i8 %x, 17
@@ -2561,9 +2407,7 @@ define i1 @and_ugt_uge_swap(i8 %x) {
 define i1 @and_ugt_ugt_swap(i8 %x) {
 ; CHECK-LABEL: @and_ugt_ugt_swap(
 ; CHECK-NEXT:    [[A:%.*]] = icmp ugt i8 %x, 23
-; CHECK-NEXT:    [[B:%.*]] = icmp ugt i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[A]]
 ;
   %a = icmp ugt i8 %x, 23
   %b = icmp ugt i8 %x, 17
@@ -2600,10 +2444,8 @@ define i1 @and_ugt_ult_swap(i8 %x) {
 
 define i1 @and_ule_eq_swap(i8 %x) {
 ; CHECK-LABEL: @and_ule_eq_swap(
-; CHECK-NEXT:    [[A:%.*]] = icmp ule i8 %x, 23
 ; CHECK-NEXT:    [[B:%.*]] = icmp eq i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp ule i8 %x, 23
   %b = icmp eq i8 %x, 17
@@ -2720,10 +2562,8 @@ define i1 @and_ule_ugt_swap(i8 %x) {
 
 define i1 @and_ule_ule_swap(i8 %x) {
 ; CHECK-LABEL: @and_ule_ule_swap(
-; CHECK-NEXT:    [[A:%.*]] = icmp ule i8 %x, 23
 ; CHECK-NEXT:    [[B:%.*]] = icmp ule i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp ule i8 %x, 23
   %b = icmp ule i8 %x, 17
@@ -2735,10 +2575,8 @@ define i1 @and_ule_ule_swap(i8 %x) {
 
 define i1 @and_ule_ult_swap(i8 %x) {
 ; CHECK-LABEL: @and_ule_ult_swap(
-; CHECK-NEXT:    [[A:%.*]] = icmp ule i8 %x, 23
 ; CHECK-NEXT:    [[B:%.*]] = icmp ult i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp ule i8 %x, 23
   %b = icmp ult i8 %x, 17
@@ -2751,10 +2589,8 @@ define i1 @and_ule_ult_swap(i8 %x) {
 
 define i1 @and_ult_eq_swap(i8 %x) {
 ; CHECK-LABEL: @and_ult_eq_swap(
-; CHECK-NEXT:    [[A:%.*]] = icmp ult i8 %x, 23
 ; CHECK-NEXT:    [[B:%.*]] = icmp eq i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp ult i8 %x, 23
   %b = icmp eq i8 %x, 17
@@ -2871,10 +2707,8 @@ define i1 @and_ult_ugt_swap(i8 %x) {
 
 define i1 @and_ult_ule_swap(i8 %x) {
 ; CHECK-LABEL: @and_ult_ule_swap(
-; CHECK-NEXT:    [[A:%.*]] = icmp ult i8 %x, 23
 ; CHECK-NEXT:    [[B:%.*]] = icmp ule i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp ult i8 %x, 23
   %b = icmp ule i8 %x, 17
@@ -2886,10 +2720,8 @@ define i1 @and_ult_ule_swap(i8 %x) {
 
 define i1 @and_ult_ult_swap(i8 %x) {
 ; CHECK-LABEL: @and_ult_ult_swap(
-; CHECK-NEXT:    [[A:%.*]] = icmp ult i8 %x, 23
 ; CHECK-NEXT:    [[B:%.*]] = icmp ult i8 %x, 17
-; CHECK-NEXT:    [[C:%.*]] = and i1 [[A]], [[B]]
-; CHECK-NEXT:    ret i1 [[C]]
+; CHECK-NEXT:    ret i1 [[B]]
 ;
   %a = icmp ult i8 %x, 23
   %b = icmp ult i8 %x, 17