[InstSimplify] Add tests for icmp with urem divisor (NFC)

Author: xldenis

llvm/test/Transforms/InstSimplify/compare.ll

@@ -723,6 +723,50 @@ define i1 @urem7(i32 %X) {
   ret i1 %B
 }
 
+define i1 @urem8(i8 %X, i8 %Y) {
+; CHECK-LABEL: @urem8(
+; CHECK-NEXT:    [[A:%.*]] = urem i8 [[X:%.*]], [[Y:%.*]]
+; CHECK-NEXT:    [[B:%.*]] = icmp ule i8 [[A]], [[X]]
+; CHECK-NEXT:    ret i1 [[B]]
+;
+  %A = urem i8 %X, %Y
+  %B = icmp ule i8 %A, %X
+  ret i1 %B
+}
+
+define i1 @urem9(i8 %X, i8 %Y) {
+; CHECK-LABEL: @urem9(
+; CHECK-NEXT:    [[A:%.*]] = urem i8 [[X:%.*]], [[Y:%.*]]
+; CHECK-NEXT:    [[B:%.*]] = icmp ugt i8 [[A]], [[X]]
+; CHECK-NEXT:    ret i1 [[B]]
+;
+  %A = urem i8 %X, %Y
+  %B = icmp ugt i8 %A, %X
+  ret i1 %B
+}
+
+define i1 @urem10(i8 %X, i8 %Y) {
+; CHECK-LABEL: @urem10(
+; CHECK-NEXT:    [[A:%.*]] = urem i8 [[X:%.*]], [[Y:%.*]]
+; CHECK-NEXT:    [[B:%.*]] = icmp uge i8 [[X]], [[A]]
+; CHECK-NEXT:    ret i1 [[B]]
+;
+  %A = urem i8 %X, %Y
+  %B = icmp uge i8 %X, %A
+  ret i1 %B
+}
+
+define i1 @urem11(i8 %X, i8 %Y) {
+; CHECK-LABEL: @urem11(
+; CHECK-NEXT:    [[A:%.*]] = urem i8 [[X:%.*]], [[Y:%.*]]
+; CHECK-NEXT:    [[B:%.*]] = icmp ult i8 [[X]], [[A]]
+; CHECK-NEXT:    ret i1 [[B]]
+;
+  %A = urem i8 %X, %Y
+  %B = icmp ult i8 %X, %A
+  ret i1 %B
+}
+
 ; PR9343 #15
 define i1 @srem2(i16 %X, i32 %Y) {
 ; CHECK-LABEL: @srem2(
@@ -961,7 +1005,7 @@ define i1 @alloca_compare(i64 %idx) {
 
 define i1 @alloca_compare_no_null_opt(i64 %idx) #0 {
 ; CHECK-LABEL: @alloca_compare_no_null_opt(
-; CHECK-NEXT:    [[SV:%.*]] = alloca { i32, i32, [124 x i32] }
+; CHECK-NEXT:    [[SV:%.*]] = alloca { i32, i32, [124 x i32] }, align 8
 ; CHECK-NEXT:    [[CMP:%.*]] = getelementptr inbounds { i32, i32, [124 x i32] }, { i32, i32, [124 x i32] }* [[SV]], i32 0, i32 2, i64 [[IDX:%.*]]
 ; CHECK-NEXT:    [[X:%.*]] = icmp eq i32* [[CMP]], null
 ; CHECK-NEXT:    ret i1 [[X]]
@@ -995,7 +1039,7 @@ unreachableblock:
 
 define i1 @alloca_argument_compare(i64* %arg) {
 ; CHECK-LABEL: @alloca_argument_compare(
-; CHECK-NEXT:    [[ALLOC:%.*]] = alloca i64
+; CHECK-NEXT:    [[ALLOC:%.*]] = alloca i64, align 8
 ; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i64* [[ARG:%.*]], [[ALLOC]]
 ; CHECK-NEXT:    ret i1 [[CMP]]
 ;
@@ -1008,7 +1052,7 @@ define i1 @alloca_argument_compare(i64* %arg) {
 
 define i1 @alloca_argument_compare_swapped(i64* %arg) {
 ; CHECK-LABEL: @alloca_argument_compare_swapped(
-; CHECK-NEXT:    [[ALLOC:%.*]] = alloca i64
+; CHECK-NEXT:    [[ALLOC:%.*]] = alloca i64, align 8
 ; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i64* [[ALLOC]], [[ARG:%.*]]
 ; CHECK-NEXT:    ret i1 [[CMP]]
 ;