define i1 @xor_logic_and_logic_or2(i1 %c, i1 %x, i1 %y) {
; CHECK-LABEL: @xor_logic_and_logic_or2(
-; CHECK-NEXT: [[O:%.*]] = select i1 [[Y:%.*]], i1 true, i1 [[C:%.*]]
-; CHECK-NEXT: [[A:%.*]] = select i1 [[C]], i1 [[X:%.*]], i1 false
-; CHECK-NEXT: [[R:%.*]] = xor i1 [[A]], [[O]]
+; CHECK-NEXT: [[TMP1:%.*]] = xor i1 [[X:%.*]], true
+; CHECK-NEXT: [[R:%.*]] = select i1 [[C:%.*]], i1 [[TMP1]], i1 [[Y:%.*]]
; CHECK-NEXT: ret i1 [[R]]
;
%o = select i1 %y, i1 true, i1 %c
define i1 @xor_logic_and_logic_or3(i1 %c, i1 %x, i1 %y) {
; CHECK-LABEL: @xor_logic_and_logic_or3(
-; CHECK-NEXT: [[O:%.*]] = select i1 [[Y:%.*]], i1 true, i1 [[C:%.*]]
-; CHECK-NEXT: [[A:%.*]] = select i1 [[X:%.*]], i1 [[C]], i1 false
-; CHECK-NEXT: [[R:%.*]] = xor i1 [[A]], [[O]]
+; CHECK-NEXT: [[TMP1:%.*]] = freeze i1 [[C:%.*]]
+; CHECK-NEXT: [[TMP2:%.*]] = xor i1 [[X:%.*]], true
+; CHECK-NEXT: [[R:%.*]] = select i1 [[TMP1]], i1 [[TMP2]], i1 [[Y:%.*]]
; CHECK-NEXT: ret i1 [[R]]
;
%o = select i1 %y, i1 true, i1 %c
define i1 @xor_logic_and_logic_or4(i1 %c, i1 %x, i1 %y) {
; CHECK-LABEL: @xor_logic_and_logic_or4(
-; CHECK-NEXT: [[O:%.*]] = select i1 [[C:%.*]], i1 true, i1 [[Y:%.*]]
-; CHECK-NEXT: [[A:%.*]] = select i1 [[X:%.*]], i1 [[C]], i1 false
-; CHECK-NEXT: [[R:%.*]] = xor i1 [[A]], [[O]]
+; CHECK-NEXT: [[TMP1:%.*]] = xor i1 [[X:%.*]], true
+; CHECK-NEXT: [[R:%.*]] = select i1 [[C:%.*]], i1 [[TMP1]], i1 [[Y:%.*]]
; CHECK-NEXT: ret i1 [[R]]
;
%o = select i1 %c, i1 true, i1 %y
define <3 x i1> @xor_logic_and_logic_or_vector2(<3 x i1> %c, <3 x i1> %x, <3 x i1> %y) {
; CHECK-LABEL: @xor_logic_and_logic_or_vector2(
-; CHECK-NEXT: [[O:%.*]] = select <3 x i1> [[Y:%.*]], <3 x i1> <i1 true, i1 true, i1 true>, <3 x i1> [[C:%.*]]
-; CHECK-NEXT: [[A:%.*]] = select <3 x i1> [[X:%.*]], <3 x i1> [[C]], <3 x i1> zeroinitializer
-; CHECK-NEXT: [[R:%.*]] = xor <3 x i1> [[A]], [[O]]
+; CHECK-NEXT: [[TMP1:%.*]] = freeze <3 x i1> [[C:%.*]]
+; CHECK-NEXT: [[TMP2:%.*]] = xor <3 x i1> [[X:%.*]], <i1 true, i1 true, i1 true>
+; CHECK-NEXT: [[R:%.*]] = select <3 x i1> [[TMP1]], <3 x i1> [[TMP2]], <3 x i1> [[Y:%.*]]
; CHECK-NEXT: ret <3 x i1> [[R]]
;
%o = select <3 x i1> %y, <3 x i1> <i1 true, i1 true, i1 true>, <3 x i1> %c
define i1 @xor_and_logic_or1(i1 %c, i1 %x, i1 %y) {
; CHECK-LABEL: @xor_and_logic_or1(
-; CHECK-NEXT: [[O:%.*]] = select i1 [[C:%.*]], i1 true, i1 [[Y:%.*]]
-; CHECK-NEXT: [[A:%.*]] = and i1 [[C]], [[X:%.*]]
-; CHECK-NEXT: [[R:%.*]] = xor i1 [[A]], [[O]]
+; CHECK-NEXT: [[TMP1:%.*]] = xor i1 [[X:%.*]], true
+; CHECK-NEXT: [[R:%.*]] = select i1 [[C:%.*]], i1 [[TMP1]], i1 [[Y:%.*]]
; CHECK-NEXT: ret i1 [[R]]
;
%o = select i1 %c, i1 true, i1 %y
define i1 @xor_and_logic_or2(i1 %c, i1 %x, i1 %y) {
; CHECK-LABEL: @xor_and_logic_or2(
-; CHECK-NEXT: [[O:%.*]] = select i1 [[Y:%.*]], i1 true, i1 [[C:%.*]]
-; CHECK-NEXT: [[A:%.*]] = and i1 [[X:%.*]], [[C]]
-; CHECK-NEXT: [[R:%.*]] = xor i1 [[A]], [[O]]
+; CHECK-NEXT: [[TMP1:%.*]] = xor i1 [[X:%.*]], true
+; CHECK-NEXT: [[R:%.*]] = select i1 [[C:%.*]], i1 [[TMP1]], i1 [[Y:%.*]]
; CHECK-NEXT: ret i1 [[R]]
;
%o = select i1 %y, i1 true, i1 %c
define <2 x i1> @xor_and_logic_or_vector(<2 x i1> %c, <2 x i1> %x, <2 x i1> %y) {
; CHECK-LABEL: @xor_and_logic_or_vector(
-; CHECK-NEXT: [[O:%.*]] = select <2 x i1> [[C:%.*]], <2 x i1> <i1 true, i1 true>, <2 x i1> [[Y:%.*]]
-; CHECK-NEXT: [[A:%.*]] = and <2 x i1> [[C]], [[X:%.*]]
-; CHECK-NEXT: [[R:%.*]] = xor <2 x i1> [[A]], [[O]]
+; CHECK-NEXT: [[TMP1:%.*]] = xor <2 x i1> [[X:%.*]], <i1 true, i1 true>
+; CHECK-NEXT: [[R:%.*]] = select <2 x i1> [[C:%.*]], <2 x i1> [[TMP1]], <2 x i1> [[Y:%.*]]
; CHECK-NEXT: ret <2 x i1> [[R]]
;
%o = select <2 x i1> %c, <2 x i1> <i1 true, i1 true>, <2 x i1> %y
define i1 @xor_logic_and_or1(i1 %c, i1 %x, i1 %y) {
; CHECK-LABEL: @xor_logic_and_or1(
-; CHECK-NEXT: [[O:%.*]] = or i1 [[Y:%.*]], [[C:%.*]]
-; CHECK-NEXT: [[A:%.*]] = select i1 [[C]], i1 [[X:%.*]], i1 false
-; CHECK-NEXT: [[R:%.*]] = xor i1 [[A]], [[O]]
+; CHECK-NEXT: [[TMP1:%.*]] = xor i1 [[X:%.*]], true
+; CHECK-NEXT: [[R:%.*]] = select i1 [[C:%.*]], i1 [[TMP1]], i1 [[Y:%.*]]
; CHECK-NEXT: ret i1 [[R]]
;
%o = or i1 %y, %c
define i1 @xor_logic_and_or2(i1 %c, i1 %x, i1 %y) {
; CHECK-LABEL: @xor_logic_and_or2(
-; CHECK-NEXT: [[O:%.*]] = or i1 [[C:%.*]], [[Y:%.*]]
-; CHECK-NEXT: [[A:%.*]] = select i1 [[X:%.*]], i1 [[C]], i1 false
-; CHECK-NEXT: [[R:%.*]] = xor i1 [[A]], [[O]]
+; CHECK-NEXT: [[TMP1:%.*]] = xor i1 [[X:%.*]], true
+; CHECK-NEXT: [[R:%.*]] = select i1 [[C:%.*]], i1 [[TMP1]], i1 [[Y:%.*]]
; CHECK-NEXT: ret i1 [[R]]
;
%o = or i1 %c, %y
define <2 x i1> @xor_logic_and_or_vector(<2 x i1> %c, <2 x i1> %x, <2 x i1> %y) {
; CHECK-LABEL: @xor_logic_and_or_vector(
-; CHECK-NEXT: [[O:%.*]] = or <2 x i1> [[Y:%.*]], [[C:%.*]]
-; CHECK-NEXT: [[A:%.*]] = select <2 x i1> [[C]], <2 x i1> [[X:%.*]], <2 x i1> zeroinitializer
-; CHECK-NEXT: [[R:%.*]] = xor <2 x i1> [[A]], [[O]]
+; CHECK-NEXT: [[TMP1:%.*]] = xor <2 x i1> [[X:%.*]], <i1 true, i1 true>
+; CHECK-NEXT: [[R:%.*]] = select <2 x i1> [[C:%.*]], <2 x i1> [[TMP1]], <2 x i1> [[Y:%.*]]
; CHECK-NEXT: ret <2 x i1> [[R]]
;
%o = or <2 x i1> %y, %c
ret <2 x i1> %r
}
-;; TODO: do we really need to do this transform?
+;; even through we save a instruction here, select is heavier than normal
+;; and/or/xor on most backend, do we really need to do this transform?
define i1 @xor_and_or(i1 %c, i1 %x, i1 %y) {
; CHECK-LABEL: @xor_and_or(
-; CHECK-NEXT: [[O:%.*]] = or i1 [[Y:%.*]], [[C:%.*]]
-; CHECK-NEXT: [[A:%.*]] = and i1 [[C]], [[X:%.*]]
-; CHECK-NEXT: [[R:%.*]] = xor i1 [[A]], [[O]]
+; CHECK-NEXT: [[TMP1:%.*]] = xor i1 [[X:%.*]], true
+; CHECK-NEXT: [[R:%.*]] = select i1 [[C:%.*]], i1 [[TMP1]], i1 [[Y:%.*]]
; CHECK-NEXT: ret i1 [[R]]
;
%o = or i1 %y, %c
ret i1 %r
}
-;; TODO: do we really need to do this transform?
+;; even through we save a instruction here, select is heavier than normal
+;; and/or/xor on most backend, do we really need to do this transform?
define <4 x i1> @xor_and_or_vector(<4 x i1> %c, <4 x i1> %x, <4 x i1> %y) {
; CHECK-LABEL: @xor_and_or_vector(
-; CHECK-NEXT: [[O:%.*]] = or <4 x i1> [[Y:%.*]], [[C:%.*]]
-; CHECK-NEXT: [[A:%.*]] = and <4 x i1> [[C]], [[X:%.*]]
-; CHECK-NEXT: [[R:%.*]] = xor <4 x i1> [[A]], [[O]]
+; CHECK-NEXT: [[TMP1:%.*]] = xor <4 x i1> [[X:%.*]], <i1 true, i1 true, i1 true, i1 true>
+; CHECK-NEXT: [[R:%.*]] = select <4 x i1> [[C:%.*]], <4 x i1> [[TMP1]], <4 x i1> [[Y:%.*]]
; CHECK-NEXT: ret <4 x i1> [[R]]
;
%o = or <4 x i1> %y, %c
ret <4 x i1> %r
}
+; Negative test, more than one use
define i1 @xor_and_or_negative_oneuse(i1 %c, i1 %x, i1 %y) {
; CHECK-LABEL: @xor_and_or_negative_oneuse(
; CHECK-NEXT: [[O:%.*]] = or i1 [[Y:%.*]], [[C:%.*]]