1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt -passes=loop-vectorize,dce,instcombine -force-target-instruction-cost=1 \ 3; RUN: -prefer-predicate-over-epilogue=scalar-epilogue < %s -S | FileCheck %s 4 5target triple = "aarch64-linux-gnu" 6 7; Test a case where the vectorised induction variable is used to 8; generate a mask: 9; for (long long i = 0; i < n; i++) { 10; if (i & 0x1) 11; a[i] = b[i]; 12; } 13 14define void @cond_ind64(ptr noalias nocapture %a, ptr noalias nocapture readonly %b, i64 %n) #0 { 15; CHECK-LABEL: @cond_ind64( 16; CHECK-NEXT: entry: 17; CHECK-NEXT: [[TMP0:%.*]] = call i64 @llvm.vscale.i64() 18; CHECK-NEXT: [[TMP1:%.*]] = shl i64 [[TMP0]], 2 19; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N:%.*]], [[TMP1]] 20; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]] 21; CHECK: vector.ph: 22; CHECK-NEXT: [[TMP2:%.*]] = call i64 @llvm.vscale.i64() 23; CHECK-NEXT: [[TMP3:%.*]] = shl i64 [[TMP2]], 2 24; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[N]], [[TMP3]] 25; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[N]], [[N_MOD_VF]] 26; CHECK-NEXT: [[TMP4:%.*]] = call i64 @llvm.vscale.i64() 27; CHECK-NEXT: [[TMP5:%.*]] = shl i64 [[TMP4]], 2 28; CHECK-NEXT: [[TMP6:%.*]] = call <vscale x 4 x i64> @llvm.stepvector.nxv4i64() 29; CHECK-NEXT: [[DOTSPLATINSERT:%.*]] = insertelement <vscale x 4 x i64> poison, i64 [[TMP5]], i64 0 30; CHECK-NEXT: [[DOTSPLAT:%.*]] = shufflevector <vscale x 4 x i64> [[DOTSPLATINSERT]], <vscale x 4 x i64> poison, <vscale x 4 x i32> zeroinitializer 31; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] 32; CHECK: vector.body: 33; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] 34; CHECK-NEXT: [[VEC_IND:%.*]] = phi <vscale x 4 x i64> [ [[TMP6]], [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ] 35; CHECK-NEXT: [[TMP9:%.*]] = trunc <vscale x 4 x i64> [[VEC_IND]] to <vscale x 4 x i1> 36; CHECK-NEXT: [[TMP10:%.*]] = getelementptr i32, ptr [[B:%.*]], i64 [[INDEX]] 37; CHECK-NEXT: [[WIDE_MASKED_LOAD:%.*]] = call <vscale x 4 x i32> @llvm.masked.load.nxv4i32.p0(ptr [[TMP10]], i32 4, <vscale x 4 x i1> [[TMP9]], <vscale x 4 x i32> poison) 38; CHECK-NEXT: [[TMP11:%.*]] = getelementptr i32, ptr [[A:%.*]], i64 [[INDEX]] 39; CHECK-NEXT: call void @llvm.masked.store.nxv4i32.p0(<vscale x 4 x i32> [[WIDE_MASKED_LOAD]], ptr [[TMP11]], i32 4, <vscale x 4 x i1> [[TMP9]]) 40; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]] 41; CHECK-NEXT: [[VEC_IND_NEXT]] = add <vscale x 4 x i64> [[VEC_IND]], [[DOTSPLAT]] 42; CHECK-NEXT: [[TMP12:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]] 43; CHECK-NEXT: br i1 [[TMP12]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]] 44; CHECK: middle.block: 45; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N_MOD_VF]], 0 46; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]] 47; CHECK: scalar.ph: 48; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ] 49; CHECK-NEXT: br label [[FOR_BODY:%.*]] 50; CHECK: for.body: 51; CHECK-NEXT: [[I_08:%.*]] = phi i64 [ [[INC:%.*]], [[FOR_INC:%.*]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ] 52; CHECK-NEXT: [[AND:%.*]] = and i64 [[I_08]], 1 53; CHECK-NEXT: [[TOBOOL_NOT:%.*]] = icmp eq i64 [[AND]], 0 54; CHECK-NEXT: br i1 [[TOBOOL_NOT]], label [[FOR_INC]], label [[IF_THEN:%.*]] 55; CHECK: if.then: 56; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[B]], i64 [[I_08]] 57; CHECK-NEXT: [[TMP13:%.*]] = load i32, ptr [[ARRAYIDX]], align 4 58; CHECK-NEXT: [[ARRAYIDX1:%.*]] = getelementptr inbounds i32, ptr [[A]], i64 [[I_08]] 59; CHECK-NEXT: store i32 [[TMP13]], ptr [[ARRAYIDX1]], align 4 60; CHECK-NEXT: br label [[FOR_INC]] 61; CHECK: for.inc: 62; CHECK-NEXT: [[INC]] = add nuw nsw i64 [[I_08]], 1 63; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INC]], [[N]] 64; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[EXIT]], label [[FOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]] 65; CHECK: exit: 66; CHECK-NEXT: ret void 67; 68entry: 69 br label %for.body 70 71for.body: ; preds = %entry, %for.inc 72 %i.08 = phi i64 [ %inc, %for.inc ], [ 0, %entry ] 73 %and = and i64 %i.08, 1 74 %tobool.not = icmp eq i64 %and, 0 75 br i1 %tobool.not, label %for.inc, label %if.then 76 77if.then: ; preds = %for.body 78 %arrayidx = getelementptr inbounds i32, ptr %b, i64 %i.08 79 %0 = load i32, ptr %arrayidx, align 4 80 %arrayidx1 = getelementptr inbounds i32, ptr %a, i64 %i.08 81 store i32 %0, ptr %arrayidx1, align 4 82 br label %for.inc 83 84for.inc: ; preds = %for.body, %if.then 85 %inc = add nuw nsw i64 %i.08, 1 86 %exitcond.not = icmp eq i64 %inc, %n 87 br i1 %exitcond.not, label %exit, label %for.body, !llvm.loop !0 88 89exit: ; preds = %for.inc 90 ret void 91} 92 93attributes #0 = { "target-features"="+sve" } 94 95!0 = distinct !{!0, !1, !2, !3, !4, !5} 96!1 = !{!"llvm.loop.mustprogress"} 97!2 = !{!"llvm.loop.vectorize.scalable.enable", i1 true} 98!3 = !{!"llvm.loop.vectorize.enable", i1 true} 99!4 = !{!"llvm.loop.vectorize.width", i32 4} 100!5 = !{!"llvm.loop.interleave.count", i32 1} 101