Add test cases coming from #163108

Author: spaits

llvm/test/Transforms/InstCombine/binop-select.ll

@@ -403,3 +403,163 @@ define i32 @ashr_sel_op1_use(i1 %b) {
   %r = ashr i32 -2, %s
   ret i32 %r
 }
+
+define i8 @commonArgWithOr0(i1 %arg0) {
+; CHECK-LABEL: @commonArgWithOr0(
+; CHECK-NEXT:    [[V0:%.*]] = zext i1 [[ARG0:%.*]] to i8
+; CHECK-NEXT:    [[V1:%.*]] = select i1 [[ARG0]], i8 0, i8 8
+; CHECK-NEXT:    [[V2:%.*]] = or disjoint i8 [[V1]], [[V0]]
+; CHECK-NEXT:    [[V3:%.*]] = or disjoint i8 [[V2]], 16
+; CHECK-NEXT:    ret i8 [[V3]]
+;
+  %v0 = zext i1 %arg0 to i8
+  %v1 = select i1 %arg0, i8 0, i8 8
+  %v2 = or i8 %v1, %v0
+  %v3 = or i8 %v2, 16
+  ret i8 %v3
+}
+
+define i8 @commonArgWithOr1(i1 %arg0) {
+; CHECK-LABEL: @commonArgWithOr1(
+; CHECK-NEXT:    [[V3:%.*]] = select i1 [[ARG0:%.*]], i8 17, i8 23
+; CHECK-NEXT:    ret i8 [[V3]]
+;
+  %v0 = zext i1 %arg0 to i8
+  %v1 = select i1 %arg0, i8 1, i8 7
+  %v2 = or i8 %v1, %v0
+  %v3 = or i8 %v2, 16
+  ret i8 %v3
+}
+
+define i8 @commonArgWithOr2(i1 %arg0) {
+; CHECK-LABEL: @commonArgWithOr2(
+; CHECK-NEXT:    [[V0:%.*]] = zext i1 [[ARG0:%.*]] to i8
+; CHECK-NEXT:    [[V1:%.*]] = select i1 [[ARG0]], i8 5, i8 42
+; CHECK-NEXT:    [[V2:%.*]] = or i8 [[V1]], [[V0]]
+; CHECK-NEXT:    [[V3:%.*]] = or disjoint i8 [[V2]], 16
+; CHECK-NEXT:    ret i8 [[V3]]
+;
+  %v0 = zext i1 %arg0 to i8
+  %v1 = select i1 %arg0, i8 21, i8 42
+  %v2 = or i8 %v1, %v0
+  %v3 = or i8 %v2, 16
+  ret i8 %v3
+}
+
+define i8 @commonArgWithAnd0(i1 %arg0) {
+; CHECK-LABEL: @commonArgWithAnd0(
+; CHECK-NEXT:    ret i8 16
+;
+  %v0 = zext i1 %arg0 to i8
+  %v1 = select i1 %arg0, i8 0, i8 8
+  %v2 = and i8 %v1, %v0
+  %v3 = or i8 %v2, 16
+  ret i8 %v3
+}
+
+define i8 @commonArgWithAnd1(i1 %arg0) {
+; CHECK-LABEL: @commonArgWithAnd1(
+; CHECK-NEXT:    ret i8 16
+;
+  %v0 = zext i1 %arg0 to i8
+  %v1 = select i1 %arg0, i8 8, i8 1
+  %v2 = and i8 %v1, %v0
+  %v3 = or i8 %v2, 16
+  ret i8 %v3
+}
+
+define i8 @commonArgWithAnd2(i1 %arg0) {
+; CHECK-LABEL: @commonArgWithAnd2(
+; CHECK-NEXT:    [[V2:%.*]] = zext i1 [[ARG0:%.*]] to i8
+; CHECK-NEXT:    [[V3:%.*]] = or disjoint i8 [[V2]], 16
+; CHECK-NEXT:    ret i8 [[V3]]
+;
+  %v0 = zext i1 %arg0 to i8
+  %v1 = select i1 %arg0, i8 1, i8 7
+  %v2 = and i8 %v1, %v0
+  %v3 = or i8 %v2, 16
+  ret i8 %v3
+}
+
+define i8 @commonArgWithAnd3(i1 %arg0) {
+; CHECK-LABEL: @commonArgWithAnd3(
+; CHECK-NEXT:    [[V2:%.*]] = zext i1 [[ARG0:%.*]] to i8
+; CHECK-NEXT:    [[V3:%.*]] = or disjoint i8 [[V2]], 16
+; CHECK-NEXT:    ret i8 [[V3]]
+;
+  %v0 = zext i1 %arg0 to i8
+  %v1 = select i1 %arg0, i8 21, i8 42
+  %v2 = and i8 %v1, %v0
+  %v3 = or i8 %v2, 16
+  ret i8 %v3
+}
+
+define i8 @commonArgWithXor0(i1 %arg0) {
+; CHECK-LABEL: @commonArgWithXor0(
+; CHECK-NEXT:    [[V0:%.*]] = zext i1 [[ARG0:%.*]] to i8
+; CHECK-NEXT:    [[V1:%.*]] = select i1 [[ARG0]], i8 0, i8 8
+; CHECK-NEXT:    [[V2:%.*]] = or disjoint i8 [[V1]], [[V0]]
+; CHECK-NEXT:    [[V3:%.*]] = or disjoint i8 [[V2]], 16
+; CHECK-NEXT:    ret i8 [[V3]]
+;
+  %v0 = zext i1 %arg0 to i8
+  %v1 = select i1 %arg0, i8 0, i8 8
+  %v2 = xor i8 %v1, %v0
+  %v3 = or i8 %v2, 16
+  ret i8 %v3
+}
+
+define i8 @commonArgWithXor1(i1 %arg0) {
+; CHECK-LABEL: @commonArgWithXor1(
+; CHECK-NEXT:    [[V0:%.*]] = zext i1 [[ARG0:%.*]] to i8
+; CHECK-NEXT:    [[V1:%.*]] = select i1 [[ARG0]], i8 9, i8 1
+; CHECK-NEXT:    [[V2:%.*]] = xor i8 [[V1]], [[V0]]
+; CHECK-NEXT:    ret i8 [[V2]]
+;
+  %v0 = zext i1 %arg0 to i8
+  %v1 = select i1 %arg0, i8 9, i8 1
+  %v2 = xor i8 %v1, %v0
+  ret i8 %v2
+}
+
+define i8 @commonArgWithXor2(i1 %arg0) {
+; CHECK-LABEL: @commonArgWithXor2(
+; CHECK-NEXT:    [[V0:%.*]] = zext i1 [[ARG0:%.*]] to i8
+; CHECK-NEXT:    [[V1:%.*]] = select i1 [[ARG0]], i8 1, i8 7
+; CHECK-NEXT:    [[V2:%.*]] = xor i8 [[V1]], [[V0]]
+; CHECK-NEXT:    [[V3:%.*]] = or disjoint i8 [[V2]], 16
+; CHECK-NEXT:    ret i8 [[V3]]
+;
+  %v0 = zext i1 %arg0 to i8
+  %v1 = select i1 %arg0, i8 1, i8 7
+  %v2 = xor i8 %v1, %v0
+  %v3 = or i8 %v2, 16
+  ret i8 %v3
+}
+
+define i8 @commonArgWithXor3(i1 %arg0) {
+; CHECK-LABEL: @commonArgWithXor3(
+; CHECK-NEXT:    [[V0:%.*]] = zext i1 [[ARG0:%.*]] to i8
+; CHECK-NEXT:    [[V1:%.*]] = select i1 [[ARG0]], i8 5, i8 45
+; CHECK-NEXT:    [[V2:%.*]] = xor i8 [[V1]], [[V0]]
+; CHECK-NEXT:    [[V3:%.*]] = or disjoint i8 [[V2]], 16
+; CHECK-NEXT:    ret i8 [[V3]]
+;
+  %v0 = zext i1 %arg0 to i8
+  %v1 = select i1 %arg0, i8 21, i8 45
+  %v2 = xor i8 %v1, %v0
+  %v3 = or i8 %v2, 16
+  ret i8 %v3
+}
+
+define i8 @commonArgWithAdd0(i1 %arg0) {
+; CHECK-LABEL: @commonArgWithAdd0(
+; CHECK-NEXT:    [[V3:%.*]] = select i1 [[ARG0:%.*]], i8 22, i8 61
+; CHECK-NEXT:    ret i8 [[V3]]
+;
+  %v0 = zext i1 %arg0 to i8
+  %v1 = select i1 %arg0, i8 21, i8 45
+  %v2 = add i8 %v1, %v0
+  %v3 = or i8 %v2, 16
+  ret i8 %v3
+}