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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 52; RUN: opt -p loop-vectorize -S %s | FileCheck %s3 4target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"5target triple = "x86_64-unknown-linux-gnu"6 7; Test case for https://github.com/llvm/llvm-project/issues/106248.8define i64 @test_foldable_live_in_via_scev() {9; CHECK-LABEL: define i64 @test_foldable_live_in_via_scev() {10; CHECK-NEXT: [[ENTRY:.*:]]11; CHECK-NEXT: [[CONV:%.*]] = zext i16 -6 to i6412; CHECK-NEXT: [[ADD:%.*]] = add nsw i64 [[CONV]], -6552813; CHECK-NEXT: br label %[[VECTOR_PH:.*]]14; CHECK: [[VECTOR_PH]]:15; CHECK-NEXT: br label %[[VECTOR_BODY:.*]]16; CHECK: [[VECTOR_BODY]]:17; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]18; CHECK-NEXT: [[VEC_PHI:%.*]] = phi <2 x i64> [ splat (i64 1), %[[VECTOR_PH]] ], [ [[TMP0:%.*]], %[[VECTOR_BODY]] ]19; CHECK-NEXT: [[VEC_PHI1:%.*]] = phi <2 x i64> [ splat (i64 1), %[[VECTOR_PH]] ], [ [[TMP1:%.*]], %[[VECTOR_BODY]] ]20; CHECK-NEXT: [[TMP0]] = mul <2 x i64> [[VEC_PHI]], splat (i64 2)21; CHECK-NEXT: [[TMP1]] = mul <2 x i64> [[VEC_PHI1]], splat (i64 2)22; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 423; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i32 [[INDEX_NEXT]], 9624; CHECK-NEXT: br i1 [[TMP2]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]25; CHECK: [[MIDDLE_BLOCK]]:26; CHECK-NEXT: [[BIN_RDX:%.*]] = mul <2 x i64> [[TMP1]], [[TMP0]]27; CHECK-NEXT: [[TMP3:%.*]] = call i64 @llvm.vector.reduce.mul.v2i64(<2 x i64> [[BIN_RDX]])28; CHECK-NEXT: br label %[[SCALAR_PH:.*]]29; CHECK: [[SCALAR_PH]]:30; CHECK-NEXT: br label %[[LOOP:.*]]31; CHECK: [[LOOP]]:32; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 97, %[[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], %[[LOOP]] ]33; CHECK-NEXT: [[RED:%.*]] = phi i64 [ [[TMP3]], %[[SCALAR_PH]] ], [ [[MUL:%.*]], %[[LOOP]] ]34; CHECK-NEXT: [[MUL]] = mul nsw i64 [[RED]], [[ADD]]35; CHECK-NEXT: [[IV_NEXT]] = add nsw i32 [[IV]], 136; CHECK-NEXT: [[EC:%.*]] = icmp eq i32 [[IV_NEXT]], 10037; CHECK-NEXT: br i1 [[EC]], label %[[EXIT:.*]], label %[[LOOP]], !llvm.loop [[LOOP3:![0-9]+]]38; CHECK: [[EXIT]]:39; CHECK-NEXT: [[RET:%.*]] = phi i64 [ [[MUL]], %[[LOOP]] ]40; CHECK-NEXT: ret i64 [[RET]]41;42entry:43 %conv = zext i16 -6 to i6444 %add = add nsw i64 %conv, -6552845 br label %loop46 47loop:48 %iv = phi i32 [ 1, %entry ], [ %iv.next, %loop ]49 %red = phi i64 [ 1, %entry ], [ %mul, %loop ]50 %mul = mul nsw i64 %red, %add51 %iv.next = add nsw i32 %iv, 152 %ec = icmp eq i32 %iv.next, 10053 br i1 %ec, label %exit, label %loop54 55exit:56 %ret = phi i64 [ %mul, %loop ]57 ret i64 %ret58}59 60; Test case for https://github.com/llvm/llvm-project/issues/109528.61define i64 @second_lshr_operand_zero_via_scev() {62; CHECK-LABEL: define i64 @second_lshr_operand_zero_via_scev() {63; CHECK-NEXT: [[ENTRY:.*:]]64; CHECK-NEXT: [[EXT_0:%.*]] = sext i8 0 to i3265; CHECK-NEXT: br label %[[VECTOR_PH:.*]]66; CHECK: [[VECTOR_PH]]:67; CHECK-NEXT: br label %[[VECTOR_BODY:.*]]68; CHECK: [[VECTOR_BODY]]:69; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]70; CHECK-NEXT: [[VEC_IND:%.*]] = phi <2 x i64> [ <i64 0, i64 1>, %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], %[[VECTOR_BODY]] ]71; CHECK-NEXT: [[VEC_PHI:%.*]] = phi <2 x i64> [ zeroinitializer, %[[VECTOR_PH]] ], [ [[TMP10:%.*]], %[[VECTOR_BODY]] ]72; CHECK-NEXT: [[VEC_PHI1:%.*]] = phi <2 x i64> [ zeroinitializer, %[[VECTOR_PH]] ], [ [[TMP11:%.*]], %[[VECTOR_BODY]] ]73; CHECK-NEXT: [[VEC_IND2:%.*]] = phi <2 x i32> [ <i32 0, i32 1>, %[[VECTOR_PH]] ], [ [[VEC_IND_NEXT3:%.*]], %[[VECTOR_BODY]] ]74; CHECK-NEXT: [[STEP_ADD:%.*]] = add <2 x i64> [[VEC_IND]], splat (i64 2)75; CHECK-NEXT: [[STEP_ADD4:%.*]] = add <2 x i32> [[VEC_IND2]], splat (i32 2)76; CHECK-NEXT: [[TMP0:%.*]] = icmp eq <2 x i64> [[VEC_IND]], zeroinitializer77; CHECK-NEXT: [[TMP1:%.*]] = icmp eq <2 x i64> [[STEP_ADD]], zeroinitializer78; CHECK-NEXT: [[TMP4:%.*]] = lshr <2 x i32> [[VEC_IND2]], zeroinitializer79; CHECK-NEXT: [[TMP5:%.*]] = lshr <2 x i32> [[STEP_ADD4]], zeroinitializer80; CHECK-NEXT: [[TMP6:%.*]] = zext <2 x i32> [[TMP4]] to <2 x i64>81; CHECK-NEXT: [[TMP7:%.*]] = zext <2 x i32> [[TMP5]] to <2 x i64>82; CHECK-NEXT: [[TMP8:%.*]] = select <2 x i1> [[TMP0]], <2 x i64> zeroinitializer, <2 x i64> [[TMP6]]83; CHECK-NEXT: [[TMP9:%.*]] = select <2 x i1> [[TMP1]], <2 x i64> zeroinitializer, <2 x i64> [[TMP7]]84; CHECK-NEXT: [[TMP10]] = or <2 x i64> [[TMP8]], [[VEC_PHI]]85; CHECK-NEXT: [[TMP11]] = or <2 x i64> [[TMP9]], [[VEC_PHI1]]86; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 487; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i64> [[STEP_ADD]], splat (i64 2)88; CHECK-NEXT: [[VEC_IND_NEXT3]] = add <2 x i32> [[STEP_ADD4]], splat (i32 2)89; CHECK-NEXT: [[TMP12:%.*]] = icmp eq i64 [[INDEX_NEXT]], 100090; CHECK-NEXT: br i1 [[TMP12]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]91; CHECK: [[MIDDLE_BLOCK]]:92; CHECK-NEXT: [[BIN_RDX:%.*]] = or <2 x i64> [[TMP11]], [[TMP10]]93; CHECK-NEXT: [[TMP13:%.*]] = call i64 @llvm.vector.reduce.or.v2i64(<2 x i64> [[BIN_RDX]])94; CHECK-NEXT: br label %[[EXIT:.*]]95; CHECK: [[EXIT]]:96; CHECK-NEXT: ret i64 [[TMP13]]97;98entry:99 %ext.0 = sext i8 0 to i32100 br label %loops101 102loops:103 %iv = phi i64 [ 0, %entry ], [ %iv.next, %loops ]104 %red = phi i64 [ 0, %entry ], [ %red.next, %loops ]105 %c = icmp eq i64 %iv, 0106 %and = and i64 %iv, 0107 %0 = trunc i64 %iv to i32108 %shr = lshr i32 %0, %ext.0109 %conv.1 = zext i32 %shr to i64110 %red.next.v = select i1 %c, i64 %and, i64 %conv.1111 %red.next = or i64 %red.next.v, %red112 %iv.next = add i64 %iv, 1113 %ec = icmp eq i64 %iv.next, 1000114 br i1 %ec, label %exit, label %loops115 116exit:117 %res = phi i64 [ %red.next, %loops ]118 ret i64 %res119}120 121;.122; CHECK: [[LOOP0]] = distinct !{[[LOOP0]], [[META1:![0-9]+]], [[META2:![0-9]+]]}123; CHECK: [[META1]] = !{!"llvm.loop.isvectorized", i32 1}124; CHECK: [[META2]] = !{!"llvm.loop.unroll.runtime.disable"}125; CHECK: [[LOOP3]] = distinct !{[[LOOP3]], [[META2]], [[META1]]}126; CHECK: [[LOOP4]] = distinct !{[[LOOP4]], [[META1]], [[META2]]}127;.128