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-rw-r--r--llvm/test/Transforms/InstCombine/ispow2.ll75
1 files changed, 28 insertions, 47 deletions
diff --git a/llvm/test/Transforms/InstCombine/ispow2.ll b/llvm/test/Transforms/InstCombine/ispow2.ll
index 095e1260794..bf6352e52ac 100644
--- a/llvm/test/Transforms/InstCombine/ispow2.ll
+++ b/llvm/test/Transforms/InstCombine/ispow2.ll
@@ -3,9 +3,8 @@
define i1 @is_pow2or0_negate_op(i32 %x) {
; CHECK-LABEL: @is_pow2or0_negate_op(
-; CHECK-NEXT: [[TMP1:%.*]] = add i32 [[X:%.*]], -1
-; CHECK-NEXT: [[TMP2:%.*]] = and i32 [[TMP1]], [[X]]
-; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[TMP2]], 0
+; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.ctpop.i32(i32 [[X:%.*]]), !range !0
+; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[TMP1]], 2
; CHECK-NEXT: ret i1 [[CMP]]
;
%neg = sub i32 0, %x
@@ -16,9 +15,8 @@ define i1 @is_pow2or0_negate_op(i32 %x) {
define <2 x i1> @is_pow2or0_negate_op_vec(<2 x i32> %x) {
; CHECK-LABEL: @is_pow2or0_negate_op_vec(
-; CHECK-NEXT: [[TMP1:%.*]] = add <2 x i32> [[X:%.*]], <i32 -1, i32 -1>
-; CHECK-NEXT: [[TMP2:%.*]] = and <2 x i32> [[TMP1]], [[X]]
-; CHECK-NEXT: [[CMP:%.*]] = icmp eq <2 x i32> [[TMP2]], zeroinitializer
+; CHECK-NEXT: [[TMP1:%.*]] = call <2 x i32> @llvm.ctpop.v2i32(<2 x i32> [[X:%.*]])
+; CHECK-NEXT: [[CMP:%.*]] = icmp ult <2 x i32> [[TMP1]], <i32 2, i32 2>
; CHECK-NEXT: ret <2 x i1> [[CMP]]
;
%neg = sub <2 x i32> zeroinitializer, %x
@@ -55,9 +53,8 @@ define <2 x i1> @is_pow2or0_decrement_op_vec(<2 x i8> %x) {
define i1 @isnot_pow2or0_negate_op(i32 %x) {
; CHECK-LABEL: @isnot_pow2or0_negate_op(
-; CHECK-NEXT: [[TMP1:%.*]] = add i32 [[X:%.*]], -1
-; CHECK-NEXT: [[TMP2:%.*]] = and i32 [[TMP1]], [[X]]
-; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[TMP2]], 0
+; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.ctpop.i32(i32 [[X:%.*]]), !range !0
+; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i32 [[TMP1]], 1
; CHECK-NEXT: ret i1 [[CMP]]
;
%neg = sub i32 0, %x
@@ -68,9 +65,8 @@ define i1 @isnot_pow2or0_negate_op(i32 %x) {
define <2 x i1> @isnot_pow2or0_negate_op_vec(<2 x i32> %x) {
; CHECK-LABEL: @isnot_pow2or0_negate_op_vec(
-; CHECK-NEXT: [[TMP1:%.*]] = add <2 x i32> [[X:%.*]], <i32 -1, i32 -1>
-; CHECK-NEXT: [[TMP2:%.*]] = and <2 x i32> [[TMP1]], [[X]]
-; CHECK-NEXT: [[CMP:%.*]] = icmp ne <2 x i32> [[TMP2]], zeroinitializer
+; CHECK-NEXT: [[TMP1:%.*]] = call <2 x i32> @llvm.ctpop.v2i32(<2 x i32> [[X:%.*]])
+; CHECK-NEXT: [[CMP:%.*]] = icmp ugt <2 x i32> [[TMP1]], <i32 1, i32 1>
; CHECK-NEXT: ret <2 x i1> [[CMP]]
;
%neg = sub <2 x i32> zeroinitializer, %x
@@ -108,9 +104,8 @@ define <2 x i1> @isnot_pow2or0_decrement_op_vec(<2 x i8> %x) {
define i1 @is_pow2or0_negate_op_commute1(i32 %p) {
; CHECK-LABEL: @is_pow2or0_negate_op_commute1(
; CHECK-NEXT: [[X:%.*]] = srem i32 42, [[P:%.*]]
-; CHECK-NEXT: [[TMP1:%.*]] = add nsw i32 [[X]], -1
-; CHECK-NEXT: [[TMP2:%.*]] = and i32 [[X]], [[TMP1]]
-; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[TMP2]], 0
+; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.ctpop.i32(i32 [[X]]), !range !1
+; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[TMP1]], 2
; CHECK-NEXT: ret i1 [[CMP]]
;
%x = srem i32 42, %p ; thwart complexity-based canonicalization
@@ -125,9 +120,8 @@ define i1 @is_pow2or0_negate_op_commute1(i32 %p) {
define i1 @isnot_pow2or0_negate_op_commute2(i32 %p) {
; CHECK-LABEL: @isnot_pow2or0_negate_op_commute2(
; CHECK-NEXT: [[X:%.*]] = urem i32 42, [[P:%.*]]
-; CHECK-NEXT: [[TMP1:%.*]] = add nsw i32 [[X]], -1
-; CHECK-NEXT: [[TMP2:%.*]] = and i32 [[X]], [[TMP1]]
-; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[TMP2]], 0
+; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.ctpop.i32(i32 [[X]]), !range !2
+; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i32 [[TMP1]], 1
; CHECK-NEXT: ret i1 [[CMP]]
;
%x = urem i32 42, %p ; thwart complexity-based canonicalization
@@ -140,9 +134,8 @@ define i1 @isnot_pow2or0_negate_op_commute2(i32 %p) {
define i1 @isnot_pow2or0_negate_op_commute3(i32 %p) {
; CHECK-LABEL: @isnot_pow2or0_negate_op_commute3(
; CHECK-NEXT: [[X:%.*]] = urem i32 42, [[P:%.*]]
-; CHECK-NEXT: [[TMP1:%.*]] = add nsw i32 [[X]], -1
-; CHECK-NEXT: [[TMP2:%.*]] = and i32 [[X]], [[TMP1]]
-; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[TMP2]], 0
+; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.ctpop.i32(i32 [[X]]), !range !2
+; CHECK-NEXT: [[CMP:%.*]] = icmp ugt i32 [[TMP1]], 1
; CHECK-NEXT: ret i1 [[CMP]]
;
%x = urem i32 42, %p ; thwart complexity-based canonicalization
@@ -158,8 +151,8 @@ define i1 @is_pow2or0_negate_op_extra_use1(i32 %x) {
; CHECK-LABEL: @is_pow2or0_negate_op_extra_use1(
; CHECK-NEXT: [[NEG:%.*]] = sub i32 0, [[X:%.*]]
; CHECK-NEXT: call void @use(i32 [[NEG]])
-; CHECK-NEXT: [[AND:%.*]] = and i32 [[NEG]], [[X]]
-; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[AND]], [[X]]
+; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.ctpop.i32(i32 [[X]]), !range !0
+; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[TMP1]], 2
; CHECK-NEXT: ret i1 [[CMP]]
;
%neg = sub i32 0, %x
@@ -428,12 +421,9 @@ define i1 @isnot_pow2_ctpop_wrong_pred2(i32 %x) {
define i1 @is_pow2_negate_op(i32 %x) {
; CHECK-LABEL: @is_pow2_negate_op(
-; CHECK-NEXT: [[TMP1:%.*]] = add i32 [[X:%.*]], -1
-; CHECK-NEXT: [[TMP2:%.*]] = and i32 [[TMP1]], [[X]]
-; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[TMP2]], 0
-; CHECK-NEXT: [[NOTZERO:%.*]] = icmp ne i32 [[X]], 0
-; CHECK-NEXT: [[R:%.*]] = and i1 [[NOTZERO]], [[CMP]]
-; CHECK-NEXT: ret i1 [[R]]
+; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.ctpop.i32(i32 [[X:%.*]]), !range !0
+; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i32 [[TMP1]], 1
+; CHECK-NEXT: ret i1 [[TMP2]]
;
%neg = sub i32 0, %x
%and = and i32 %neg, %x
@@ -445,12 +435,9 @@ define i1 @is_pow2_negate_op(i32 %x) {
define <2 x i1> @is_pow2_negate_op_vec(<2 x i32> %x) {
; CHECK-LABEL: @is_pow2_negate_op_vec(
-; CHECK-NEXT: [[TMP1:%.*]] = add <2 x i32> [[X:%.*]], <i32 -1, i32 -1>
-; CHECK-NEXT: [[TMP2:%.*]] = and <2 x i32> [[TMP1]], [[X]]
-; CHECK-NEXT: [[CMP:%.*]] = icmp eq <2 x i32> [[TMP2]], zeroinitializer
-; CHECK-NEXT: [[NOTZERO:%.*]] = icmp ne <2 x i32> [[X]], zeroinitializer
-; CHECK-NEXT: [[R:%.*]] = and <2 x i1> [[CMP]], [[NOTZERO]]
-; CHECK-NEXT: ret <2 x i1> [[R]]
+; CHECK-NEXT: [[TMP1:%.*]] = call <2 x i32> @llvm.ctpop.v2i32(<2 x i32> [[X:%.*]])
+; CHECK-NEXT: [[TMP2:%.*]] = icmp eq <2 x i32> [[TMP1]], <i32 1, i32 1>
+; CHECK-NEXT: ret <2 x i1> [[TMP2]]
;
%neg = sub <2 x i32> zeroinitializer, %x
%and = and <2 x i32> %neg, %x
@@ -496,12 +483,9 @@ define <2 x i1> @is_pow2_decrement_op_vec(<2 x i8> %x) {
define i1 @isnot_pow2_negate_op(i32 %x) {
; CHECK-LABEL: @isnot_pow2_negate_op(
-; CHECK-NEXT: [[TMP1:%.*]] = add i32 [[X:%.*]], -1
-; CHECK-NEXT: [[TMP2:%.*]] = and i32 [[TMP1]], [[X]]
-; CHECK-NEXT: [[CMP:%.*]] = icmp ne i32 [[TMP2]], 0
-; CHECK-NEXT: [[ISZERO:%.*]] = icmp eq i32 [[X]], 0
-; CHECK-NEXT: [[R:%.*]] = or i1 [[CMP]], [[ISZERO]]
-; CHECK-NEXT: ret i1 [[R]]
+; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.ctpop.i32(i32 [[X:%.*]]), !range !0
+; CHECK-NEXT: [[TMP2:%.*]] = icmp ne i32 [[TMP1]], 1
+; CHECK-NEXT: ret i1 [[TMP2]]
;
%neg = sub i32 0, %x
%and = and i32 %neg, %x
@@ -513,12 +497,9 @@ define i1 @isnot_pow2_negate_op(i32 %x) {
define <2 x i1> @isnot_pow2_negate_op_vec(<2 x i32> %x) {
; CHECK-LABEL: @isnot_pow2_negate_op_vec(
-; CHECK-NEXT: [[TMP1:%.*]] = add <2 x i32> [[X:%.*]], <i32 -1, i32 -1>
-; CHECK-NEXT: [[TMP2:%.*]] = and <2 x i32> [[TMP1]], [[X]]
-; CHECK-NEXT: [[CMP:%.*]] = icmp ne <2 x i32> [[TMP2]], zeroinitializer
-; CHECK-NEXT: [[ISZERO:%.*]] = icmp eq <2 x i32> [[X]], zeroinitializer
-; CHECK-NEXT: [[R:%.*]] = or <2 x i1> [[ISZERO]], [[CMP]]
-; CHECK-NEXT: ret <2 x i1> [[R]]
+; CHECK-NEXT: [[TMP1:%.*]] = call <2 x i32> @llvm.ctpop.v2i32(<2 x i32> [[X:%.*]])
+; CHECK-NEXT: [[TMP2:%.*]] = icmp ne <2 x i32> [[TMP1]], <i32 1, i32 1>
+; CHECK-NEXT: ret <2 x i1> [[TMP2]]
;
%neg = sub <2 x i32> zeroinitializer, %x
%and = and <2 x i32> %neg, %x
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