; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; REQUIRES: asserts
; RUN: opt < %s -passes=loop-vectorize -force-vector-interleave=2 -epilogue-vectorization-minimum-VF=0 -prefer-predicate-over-epilogue=scalar-epilogue \
; RUN: -debug-only=loop-vectorize -force-target-instruction-cost=1 -S 2>%t | FileCheck %s --check-prefix=CHECK
; RUN: cat %t | FileCheck %s --check-prefix=DEBUG
; RUN: opt < %s -passes=loop-vectorize -force-vector-interleave=2 -epilogue-vectorization-force-VF=8 \
; RUN: -debug-only=loop-vectorize -S 2>%t | FileCheck %s --check-prefix=CHECK-VF8
; RUN: cat %t | FileCheck %s --check-prefix=DEBUG-FORCED
target triple = "aarch64-linux-gnu"
; DEBUG: LV: Checking a loop in 'main_vf_vscale_x_16'
; DEBUG: Create Skeleton for epilogue vectorized loop (first pass)
; DEBUG: Main Loop VF:vscale x 16, Main Loop UF:2, Epilogue Loop VF:vscale x 8, Epilogue Loop UF:1
; DEBUG-FORCED: LV: Checking a loop in 'main_vf_vscale_x_16'
; DEBUG-FORCED: LEV: Epilogue vectorization factor is forced.
; DEBUG-FORCED: Create Skeleton for epilogue vectorized loop (first pass)
; DEBUG-FORCED: Main Loop VF:vscale x 16, Main Loop UF:2, Epilogue Loop VF:8, Epilogue Loop UF:1
define void @main_vf_vscale_x_16(ptr %A) #0 {
; CHECK-LABEL: @main_vf_vscale_x_16(
; CHECK-NEXT: iter.check:
; CHECK-NEXT: [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP1:%.*]] = mul i64 [[TMP0]], 8
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 1024, [[TMP1]]
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH:%.*]], label [[VECTOR_MAIN_LOOP_ITER_CHECK:%.*]]
; CHECK: vector.main.loop.iter.check:
; CHECK-NEXT: [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP3:%.*]] = mul i64 [[TMP2]], 32
; CHECK-NEXT: [[MIN_ITERS_CHECK1:%.*]] = icmp ult i64 1024, [[TMP3]]
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK1]], label [[VEC_EPILOG_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP5:%.*]] = mul i64 [[TMP4]], 32
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 1024, [[TMP5]]
; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 1024, [[N_MOD_VF]]
; CHECK-NEXT: [[TMP6:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP7:%.*]] = mul i64 [[TMP6]], 32
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP8:%.*]] = add i64 [[INDEX]], 0
; CHECK-NEXT: [[TMP14:%.*]] = getelementptr inbounds i8, ptr [[A:%.*]], i64 [[TMP8]]
; CHECK-NEXT: [[TMP16:%.*]] = getelementptr inbounds i8, ptr [[TMP14]], i32 0
; CHECK-NEXT: [[TMP17:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP18:%.*]] = mul i64 [[TMP17]], 16
; CHECK-NEXT: [[TMP19:%.*]] = getelementptr inbounds i8, ptr [[TMP14]], i64 [[TMP18]]
; CHECK-NEXT: store <vscale x 16 x i8> shufflevector (<vscale x 16 x i8> insertelement (<vscale x 16 x i8> poison, i8 1, i64 0), <vscale x 16 x i8> poison, <vscale x 16 x i32> zeroinitializer), ptr [[TMP16]], align 1
; CHECK-NEXT: store <vscale x 16 x i8> shufflevector (<vscale x 16 x i8> insertelement (<vscale x 16 x i8> poison, i8 1, i64 0), <vscale x 16 x i8> poison, <vscale x 16 x i32> zeroinitializer), ptr [[TMP19]], align 1
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP7]]
; CHECK-NEXT: [[TMP20:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[TMP20]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 1024, [[N_VEC]]
; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[VEC_EPILOG_ITER_CHECK:%.*]]
; CHECK: vec.epilog.iter.check:
; CHECK-NEXT: [[N_VEC_REMAINING:%.*]] = sub i64 1024, [[N_VEC]]
; CHECK-NEXT: [[TMP21:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP22:%.*]] = mul i64 [[TMP21]], 8
; CHECK-NEXT: [[MIN_EPILOG_ITERS_CHECK:%.*]] = icmp ult i64 [[N_VEC_REMAINING]], [[TMP22]]
; CHECK-NEXT: br i1 [[MIN_EPILOG_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH]], label [[VEC_EPILOG_PH]]
; CHECK: vec.epilog.ph:
; CHECK-NEXT: [[VEC_EPILOG_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_MAIN_LOOP_ITER_CHECK]] ]
; CHECK-NEXT: [[TMP23:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP24:%.*]] = mul i64 [[TMP23]], 8
; CHECK-NEXT: [[N_MOD_VF2:%.*]] = urem i64 1024, [[TMP24]]
; CHECK-NEXT: [[N_VEC3:%.*]] = sub i64 1024, [[N_MOD_VF2]]
; CHECK-NEXT: [[TMP25:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP26:%.*]] = mul i64 [[TMP25]], 8
; CHECK-NEXT: br label [[VEC_EPILOG_VECTOR_BODY:%.*]]
; CHECK: vec.epilog.vector.body:
; CHECK-NEXT: [[INDEX5:%.*]] = phi i64 [ [[VEC_EPILOG_RESUME_VAL]], [[VEC_EPILOG_PH]] ], [ [[INDEX_NEXT6:%.*]], [[VEC_EPILOG_VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP27:%.*]] = add i64 [[INDEX5]], 0
; CHECK-NEXT: [[TMP28:%.*]] = getelementptr inbounds i8, ptr [[A]], i64 [[TMP27]]
; CHECK-NEXT: [[TMP29:%.*]] = getelementptr inbounds i8, ptr [[TMP28]], i32 0
; CHECK-NEXT: store <vscale x 8 x i8> shufflevector (<vscale x 8 x i8> insertelement (<vscale x 8 x i8> poison, i8 1, i64 0), <vscale x 8 x i8> poison, <vscale x 8 x i32> zeroinitializer), ptr [[TMP29]], align 1
; CHECK-NEXT: [[INDEX_NEXT6]] = add nuw i64 [[INDEX5]], [[TMP26]]
; CHECK-NEXT: [[TMP30:%.*]] = icmp eq i64 [[INDEX_NEXT6]], [[N_VEC3]]
; CHECK-NEXT: br i1 [[TMP30]], label [[VEC_EPILOG_MIDDLE_BLOCK:%.*]], label [[VEC_EPILOG_VECTOR_BODY]], !llvm.loop [[LOOP3:![0-9]+]]
; CHECK: vec.epilog.middle.block:
; CHECK-NEXT: [[CMP_N4:%.*]] = icmp eq i64 1024, [[N_VEC3]]
; CHECK-NEXT: br i1 [[CMP_N4]], label [[EXIT]], label [[VEC_EPILOG_SCALAR_PH]]
; CHECK: vec.epilog.scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC3]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[ITER_CHECK:%.*]] ]
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[FOR_BODY]] ]
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i8, ptr [[A]], i64 [[IV]]
; CHECK-NEXT: store i8 1, ptr [[ARRAYIDX]], align 1
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[IV_NEXT]], 1024
; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[EXIT]], !llvm.loop [[LOOP4:![0-9]+]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
; CHECK-VF8-LABEL: @main_vf_vscale_x_16(
; CHECK-VF8-NEXT: iter.check:
; CHECK-VF8-NEXT: br i1 false, label [[VEC_EPILOG_SCALAR_PH:%.*]], label [[VECTOR_MAIN_LOOP_ITER_CHECK:%.*]]
; CHECK-VF8: vector.main.loop.iter.check:
; CHECK-VF8-NEXT: [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-VF8-NEXT: [[TMP1:%.*]] = mul i64 [[TMP0]], 32
; CHECK-VF8-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 1024, [[TMP1]]
; CHECK-VF8-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[VEC_EPILOG_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK-VF8: vector.ph:
; CHECK-VF8-NEXT: [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-VF8-NEXT: [[TMP3:%.*]] = mul i64 [[TMP2]], 32
; CHECK-VF8-NEXT: [[N_MOD_VF:%.*]] = urem i64 1024, [[TMP3]]
; CHECK-VF8-NEXT: [[N_VEC:%.*]] = sub i64 1024, [[N_MOD_VF]]
; CHECK-VF8-NEXT: [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-VF8-NEXT: [[TMP5:%.*]] = mul i64 [[TMP4]], 32
; CHECK-VF8-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK-VF8: vector.body:
; CHECK-VF8-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-VF8-NEXT: [[TMP6:%.*]] = add i64 [[INDEX]], 0
; CHECK-VF8-NEXT: [[TMP12:%.*]] = getelementptr inbounds i8, ptr [[A:%.*]], i64 [[TMP6]]
; CHECK-VF8-NEXT: [[TMP14:%.*]] = getelementptr inbounds i8, ptr [[TMP12]], i32 0
; CHECK-VF8-NEXT: [[TMP15:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-VF8-NEXT: [[TMP16:%.*]] = mul i64 [[TMP15]], 16
; CHECK-VF8-NEXT: [[TMP17:%.*]] = getelementptr inbounds i8, ptr [[TMP12]], i64 [[TMP16]]
; CHECK-VF8-NEXT: store <vscale x 16 x i8> shufflevector (<vscale x 16 x i8> insertelement (<vscale x 16 x i8> poison, i8 1, i64 0), <vscale x 16 x i8> poison, <vscale x 16 x i32> zeroinitializer), ptr [[TMP14]], align 1
; CHECK-VF8-NEXT: store <vscale x 16 x i8> shufflevector (<vscale x 16 x i8> insertelement (<vscale x 16 x i8> poison, i8 1, i64 0), <vscale x 16 x i8> poison, <vscale x 16 x i32> zeroinitializer), ptr [[TMP17]], align 1
; CHECK-VF8-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]]
; CHECK-VF8-NEXT: [[TMP18:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-VF8-NEXT: br i1 [[TMP18]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK-VF8: middle.block:
; CHECK-VF8-NEXT: [[CMP_N:%.*]] = icmp eq i64 1024, [[N_VEC]]
; CHECK-VF8-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[VEC_EPILOG_ITER_CHECK:%.*]]
; CHECK-VF8: vec.epilog.iter.check:
; CHECK-VF8-NEXT: [[N_VEC_REMAINING:%.*]] = sub i64 1024, [[N_VEC]]
; CHECK-VF8-NEXT: [[MIN_EPILOG_ITERS_CHECK:%.*]] = icmp ult i64 [[N_VEC_REMAINING]], 8
; CHECK-VF8-NEXT: br i1 [[MIN_EPILOG_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH]], label [[VEC_EPILOG_PH]]
; CHECK-VF8: vec.epilog.ph:
; CHECK-VF8-NEXT: [[VEC_EPILOG_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_MAIN_LOOP_ITER_CHECK]] ]
; CHECK-VF8-NEXT: br label [[VEC_EPILOG_VECTOR_BODY:%.*]]
; CHECK-VF8: vec.epilog.vector.body:
; CHECK-VF8-NEXT: [[INDEX1:%.*]] = phi i64 [ [[VEC_EPILOG_RESUME_VAL]], [[VEC_EPILOG_PH]] ], [ [[INDEX_NEXT2:%.*]], [[VEC_EPILOG_VECTOR_BODY]] ]
; CHECK-VF8-NEXT: [[TMP19:%.*]] = add i64 [[INDEX1]], 0
; CHECK-VF8-NEXT: [[TMP20:%.*]] = getelementptr inbounds i8, ptr [[A]], i64 [[TMP19]]
; CHECK-VF8-NEXT: [[TMP21:%.*]] = getelementptr inbounds i8, ptr [[TMP20]], i32 0
; CHECK-VF8-NEXT: store <8 x i8> <i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1>, ptr [[TMP21]], align 1
; CHECK-VF8-NEXT: [[INDEX_NEXT2]] = add nuw i64 [[INDEX1]], 8
; CHECK-VF8-NEXT: [[TMP22:%.*]] = icmp eq i64 [[INDEX_NEXT2]], 1024
; CHECK-VF8-NEXT: br i1 [[TMP22]], label [[VEC_EPILOG_MIDDLE_BLOCK:%.*]], label [[VEC_EPILOG_VECTOR_BODY]], !llvm.loop [[LOOP3:![0-9]+]]
; CHECK-VF8: vec.epilog.middle.block:
; CHECK-VF8-NEXT: br i1 true, label [[EXIT]], label [[VEC_EPILOG_SCALAR_PH]]
; CHECK-VF8: vec.epilog.scalar.ph:
; CHECK-VF8-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 1024, [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[ITER_CHECK:%.*]] ]
; CHECK-VF8-NEXT: br label [[FOR_BODY:%.*]]
; CHECK-VF8: for.body:
; CHECK-VF8-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[FOR_BODY]] ]
; CHECK-VF8-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i8, ptr [[A]], i64 [[IV]]
; CHECK-VF8-NEXT: store i8 1, ptr [[ARRAYIDX]], align 1
; CHECK-VF8-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF8-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[IV_NEXT]], 1024
; CHECK-VF8-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[EXIT]], !llvm.loop [[LOOP4:![0-9]+]]
; CHECK-VF8: exit:
; CHECK-VF8-NEXT: ret void
;
entry:
br label %for.body
for.body:
%iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]
%arrayidx = getelementptr inbounds i8, ptr %A, i64 %iv
store i8 1, ptr %arrayidx, align 1
%iv.next = add nuw nsw i64 %iv, 1
%exitcond = icmp ne i64 %iv.next, 1024
br i1 %exitcond, label %for.body, label %exit
exit:
ret void
}
; DEBUG: LV: Checking a loop in 'main_vf_vscale_x_2'
; DEBUG: Create Skeleton for epilogue vectorized loop (first pass)
; DEBUG: Main Loop VF:vscale x 2, Main Loop UF:2, Epilogue Loop VF:8, Epilogue Loop UF:1
; DEBUG-FORCED: LV: Checking a loop in 'main_vf_vscale_x_2'
; DEBUG-FORCED: LEV: Epilogue vectorization factor is forced.
; DEBUG-FORCED: Create Skeleton for epilogue vectorized loop (first pass)
; DEBUG-FORCED: Main Loop VF:vscale x 2, Main Loop UF:2, Epilogue Loop VF:8, Epilogue Loop UF:1
; When the vector.body uses VF=vscale x 1 (or VF=vscale x 2 because
; that's the minimum supported VF by SVE), we could still use a wide
; fixed-width VF=8 for the epilogue if the vectors are known to be
; sufficiently wide. This information can be deduced from vscale_range or
; VScaleForTuning (set by mcpu/mtune).
define void @main_vf_vscale_x_2(ptr %A) #0 vscale_range(8, 8) {
; CHECK-LABEL: @main_vf_vscale_x_2(
; CHECK-NEXT: iter.check:
; CHECK-NEXT: br i1 false, label [[VEC_EPILOG_SCALAR_PH:%.*]], label [[VECTOR_MAIN_LOOP_ITER_CHECK:%.*]]
; CHECK: vector.main.loop.iter.check:
; CHECK-NEXT: [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP1:%.*]] = mul i64 [[TMP0]], 4
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 1024, [[TMP1]]
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[VEC_EPILOG_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP3:%.*]] = mul i64 [[TMP2]], 4
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 1024, [[TMP3]]
; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 1024, [[N_MOD_VF]]
; CHECK-NEXT: [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP5:%.*]] = mul i64 [[TMP4]], 4
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP6:%.*]] = add i64 [[INDEX]], 0
; CHECK-NEXT: [[TMP12:%.*]] = getelementptr inbounds i64, ptr [[A:%.*]], i64 [[TMP6]]
; CHECK-NEXT: [[TMP14:%.*]] = getelementptr inbounds i64, ptr [[TMP12]], i32 0
; CHECK-NEXT: [[TMP15:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP16:%.*]] = mul i64 [[TMP15]], 2
; CHECK-NEXT: [[TMP17:%.*]] = getelementptr inbounds i64, ptr [[TMP12]], i64 [[TMP16]]
; CHECK-NEXT: store <vscale x 2 x i64> shufflevector (<vscale x 2 x i64> insertelement (<vscale x 2 x i64> poison, i64 1, i64 0), <vscale x 2 x i64> poison, <vscale x 2 x i32> zeroinitializer), ptr [[TMP14]], align 1
; CHECK-NEXT: store <vscale x 2 x i64> shufflevector (<vscale x 2 x i64> insertelement (<vscale x 2 x i64> poison, i64 1, i64 0), <vscale x 2 x i64> poison, <vscale x 2 x i32> zeroinitializer), ptr [[TMP17]], align 1
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]]
; CHECK-NEXT: [[TMP18:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[TMP18]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP5:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 1024, [[N_VEC]]
; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[VEC_EPILOG_ITER_CHECK:%.*]]
; CHECK: vec.epilog.iter.check:
; CHECK-NEXT: [[N_VEC_REMAINING:%.*]] = sub i64 1024, [[N_VEC]]
; CHECK-NEXT: [[MIN_EPILOG_ITERS_CHECK:%.*]] = icmp ult i64 [[N_VEC_REMAINING]], 8
; CHECK-NEXT: br i1 [[MIN_EPILOG_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH]], label [[VEC_EPILOG_PH]]
; CHECK: vec.epilog.ph:
; CHECK-NEXT: [[VEC_EPILOG_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_MAIN_LOOP_ITER_CHECK]] ]
; CHECK-NEXT: br label [[VEC_EPILOG_VECTOR_BODY:%.*]]
; CHECK: vec.epilog.vector.body:
; CHECK-NEXT: [[INDEX1:%.*]] = phi i64 [ [[VEC_EPILOG_RESUME_VAL]], [[VEC_EPILOG_PH]] ], [ [[INDEX_NEXT2:%.*]], [[VEC_EPILOG_VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP19:%.*]] = add i64 [[INDEX1]], 0
; CHECK-NEXT: [[TMP20:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP19]]
; CHECK-NEXT: [[TMP21:%.*]] = getelementptr inbounds i64, ptr [[TMP20]], i32 0
; CHECK-NEXT: store <8 x i64> <i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1>, ptr [[TMP21]], align 1
; CHECK-NEXT: [[INDEX_NEXT2]] = add nuw i64 [[INDEX1]], 8
; CHECK-NEXT: [[TMP22:%.*]] = icmp eq i64 [[INDEX_NEXT2]], 1024
; CHECK-NEXT: br i1 [[TMP22]], label [[VEC_EPILOG_MIDDLE_BLOCK:%.*]], label [[VEC_EPILOG_VECTOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]]
; CHECK: vec.epilog.middle.block:
; CHECK-NEXT: br i1 true, label [[EXIT]], label [[VEC_EPILOG_SCALAR_PH]]
; CHECK: vec.epilog.scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 1024, [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[ITER_CHECK:%.*]] ]
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[FOR_BODY]] ]
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[IV]]
; CHECK-NEXT: store i64 1, ptr [[ARRAYIDX]], align 1
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[IV_NEXT]], 1024
; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[EXIT]], !llvm.loop [[LOOP7:![0-9]+]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
; CHECK-VF8-LABEL: @main_vf_vscale_x_2(
; CHECK-VF8-NEXT: iter.check:
; CHECK-VF8-NEXT: br i1 false, label [[VEC_EPILOG_SCALAR_PH:%.*]], label [[VECTOR_MAIN_LOOP_ITER_CHECK:%.*]]
; CHECK-VF8: vector.main.loop.iter.check:
; CHECK-VF8-NEXT: [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-VF8-NEXT: [[TMP1:%.*]] = mul i64 [[TMP0]], 4
; CHECK-VF8-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 1024, [[TMP1]]
; CHECK-VF8-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[VEC_EPILOG_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK-VF8: vector.ph:
; CHECK-VF8-NEXT: [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-VF8-NEXT: [[TMP3:%.*]] = mul i64 [[TMP2]], 4
; CHECK-VF8-NEXT: [[N_MOD_VF:%.*]] = urem i64 1024, [[TMP3]]
; CHECK-VF8-NEXT: [[N_VEC:%.*]] = sub i64 1024, [[N_MOD_VF]]
; CHECK-VF8-NEXT: [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-VF8-NEXT: [[TMP5:%.*]] = mul i64 [[TMP4]], 4
; CHECK-VF8-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK-VF8: vector.body:
; CHECK-VF8-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-VF8-NEXT: [[TMP6:%.*]] = add i64 [[INDEX]], 0
; CHECK-VF8-NEXT: [[TMP12:%.*]] = getelementptr inbounds i64, ptr [[A:%.*]], i64 [[TMP6]]
; CHECK-VF8-NEXT: [[TMP14:%.*]] = getelementptr inbounds i64, ptr [[TMP12]], i32 0
; CHECK-VF8-NEXT: [[TMP15:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-VF8-NEXT: [[TMP16:%.*]] = mul i64 [[TMP15]], 2
; CHECK-VF8-NEXT: [[TMP17:%.*]] = getelementptr inbounds i64, ptr [[TMP12]], i64 [[TMP16]]
; CHECK-VF8-NEXT: store <vscale x 2 x i64> shufflevector (<vscale x 2 x i64> insertelement (<vscale x 2 x i64> poison, i64 1, i64 0), <vscale x 2 x i64> poison, <vscale x 2 x i32> zeroinitializer), ptr [[TMP14]], align 1
; CHECK-VF8-NEXT: store <vscale x 2 x i64> shufflevector (<vscale x 2 x i64> insertelement (<vscale x 2 x i64> poison, i64 1, i64 0), <vscale x 2 x i64> poison, <vscale x 2 x i32> zeroinitializer), ptr [[TMP17]], align 1
; CHECK-VF8-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]]
; CHECK-VF8-NEXT: [[TMP18:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-VF8-NEXT: br i1 [[TMP18]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP5:![0-9]+]]
; CHECK-VF8: middle.block:
; CHECK-VF8-NEXT: [[CMP_N:%.*]] = icmp eq i64 1024, [[N_VEC]]
; CHECK-VF8-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[VEC_EPILOG_ITER_CHECK:%.*]]
; CHECK-VF8: vec.epilog.iter.check:
; CHECK-VF8-NEXT: [[N_VEC_REMAINING:%.*]] = sub i64 1024, [[N_VEC]]
; CHECK-VF8-NEXT: [[MIN_EPILOG_ITERS_CHECK:%.*]] = icmp ult i64 [[N_VEC_REMAINING]], 8
; CHECK-VF8-NEXT: br i1 [[MIN_EPILOG_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH]], label [[VEC_EPILOG_PH]]
; CHECK-VF8: vec.epilog.ph:
; CHECK-VF8-NEXT: [[VEC_EPILOG_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_MAIN_LOOP_ITER_CHECK]] ]
; CHECK-VF8-NEXT: br label [[VEC_EPILOG_VECTOR_BODY:%.*]]
; CHECK-VF8: vec.epilog.vector.body:
; CHECK-VF8-NEXT: [[INDEX1:%.*]] = phi i64 [ [[VEC_EPILOG_RESUME_VAL]], [[VEC_EPILOG_PH]] ], [ [[INDEX_NEXT2:%.*]], [[VEC_EPILOG_VECTOR_BODY]] ]
; CHECK-VF8-NEXT: [[TMP19:%.*]] = add i64 [[INDEX1]], 0
; CHECK-VF8-NEXT: [[TMP20:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[TMP19]]
; CHECK-VF8-NEXT: [[TMP21:%.*]] = getelementptr inbounds i64, ptr [[TMP20]], i32 0
; CHECK-VF8-NEXT: store <8 x i64> <i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1>, ptr [[TMP21]], align 1
; CHECK-VF8-NEXT: [[INDEX_NEXT2]] = add nuw i64 [[INDEX1]], 8
; CHECK-VF8-NEXT: [[TMP22:%.*]] = icmp eq i64 [[INDEX_NEXT2]], 1024
; CHECK-VF8-NEXT: br i1 [[TMP22]], label [[VEC_EPILOG_MIDDLE_BLOCK:%.*]], label [[VEC_EPILOG_VECTOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]]
; CHECK-VF8: vec.epilog.middle.block:
; CHECK-VF8-NEXT: br i1 true, label [[EXIT]], label [[VEC_EPILOG_SCALAR_PH]]
; CHECK-VF8: vec.epilog.scalar.ph:
; CHECK-VF8-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 1024, [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[ITER_CHECK:%.*]] ]
; CHECK-VF8-NEXT: br label [[FOR_BODY:%.*]]
; CHECK-VF8: for.body:
; CHECK-VF8-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[FOR_BODY]] ]
; CHECK-VF8-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[IV]]
; CHECK-VF8-NEXT: store i64 1, ptr [[ARRAYIDX]], align 1
; CHECK-VF8-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF8-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[IV_NEXT]], 1024
; CHECK-VF8-NEXT: br i1 [[EXITCOND]], label [[FOR_BODY]], label [[EXIT]], !llvm.loop [[LOOP7:![0-9]+]]
; CHECK-VF8: exit:
; CHECK-VF8-NEXT: ret void
;
entry:
br label %for.body
for.body:
%iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ]
%arrayidx = getelementptr inbounds i64, ptr %A, i64 %iv
store i64 1, ptr %arrayidx, align 1
%iv.next = add nuw nsw i64 %iv, 1
%exitcond = icmp ne i64 %iv.next, 1024
br i1 %exitcond, label %for.body, label %exit
exit:
ret void
}
; FIXME: The epilogue loop is currently miscompiled: the pointer induction
; uses an incorrect resume value.
define void @test_pr57912_pointer_induction(ptr %start) #0 {
; CHECK-LABEL: @test_pr57912_pointer_induction(
; CHECK-NEXT: iter.check:
; CHECK-NEXT: [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP1:%.*]] = mul i64 [[TMP0]], 8
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 10000, [[TMP1]]
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH:%.*]], label [[VECTOR_MAIN_LOOP_ITER_CHECK:%.*]]
; CHECK: vector.main.loop.iter.check:
; CHECK-NEXT: [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP3:%.*]] = mul i64 [[TMP2]], 32
; CHECK-NEXT: [[MIN_ITERS_CHECK1:%.*]] = icmp ult i64 10000, [[TMP3]]
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK1]], label [[VEC_EPILOG_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP5:%.*]] = mul i64 [[TMP4]], 32
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 10000, [[TMP5]]
; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 10000, [[N_MOD_VF]]
; CHECK-NEXT: [[TMP6:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP7:%.*]] = mul i64 [[TMP6]], 32
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP8:%.*]] = add i64 [[INDEX]], 0
; CHECK-NEXT: [[TMP14:%.*]] = getelementptr i8, ptr [[START:%.*]], i64 [[TMP8]]
; CHECK-NEXT: [[TMP16:%.*]] = getelementptr i8, ptr [[TMP14]], i32 0
; CHECK-NEXT: [[TMP17:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP18:%.*]] = mul i64 [[TMP17]], 16
; CHECK-NEXT: [[TMP19:%.*]] = getelementptr i8, ptr [[TMP14]], i64 [[TMP18]]
; CHECK-NEXT: store <vscale x 16 x i8> zeroinitializer, ptr [[TMP16]], align 1
; CHECK-NEXT: store <vscale x 16 x i8> zeroinitializer, ptr [[TMP19]], align 1
; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP7]]
; CHECK-NEXT: [[TMP20:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[TMP20]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP8:![0-9]+]]
; CHECK: middle.block:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 10000, [[N_VEC]]
; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[VEC_EPILOG_ITER_CHECK:%.*]]
; CHECK: vec.epilog.iter.check:
; CHECK-NEXT: [[IND_END4:%.*]] = getelementptr i8, ptr [[START]], i64 [[N_VEC]]
; CHECK-NEXT: [[N_VEC_REMAINING:%.*]] = sub i64 10000, [[N_VEC]]
; CHECK-NEXT: [[TMP21:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP22:%.*]] = mul i64 [[TMP21]], 8
; CHECK-NEXT: [[MIN_EPILOG_ITERS_CHECK:%.*]] = icmp ult i64 [[N_VEC_REMAINING]], [[TMP22]]
; CHECK-NEXT: br i1 [[MIN_EPILOG_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH]], label [[VEC_EPILOG_PH]]
; CHECK: vec.epilog.ph:
; CHECK-NEXT: [[VEC_EPILOG_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_MAIN_LOOP_ITER_CHECK]] ]
; CHECK-NEXT: [[TMP23:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP24:%.*]] = mul i64 [[TMP23]], 8
; CHECK-NEXT: [[N_MOD_VF2:%.*]] = urem i64 10000, [[TMP24]]
; CHECK-NEXT: [[N_VEC3:%.*]] = sub i64 10000, [[N_MOD_VF2]]
; CHECK-NEXT: [[IND_END:%.*]] = getelementptr i8, ptr [[START]], i64 [[N_VEC3]]
; CHECK-NEXT: [[TMP25:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-NEXT: [[TMP26:%.*]] = mul i64 [[TMP25]], 8
; CHECK-NEXT: br label [[VEC_EPILOG_VECTOR_BODY:%.*]]
; CHECK: vec.epilog.vector.body:
; CHECK-NEXT: [[INDEX7:%.*]] = phi i64 [ [[VEC_EPILOG_RESUME_VAL]], [[VEC_EPILOG_PH]] ], [ [[INDEX_NEXT8:%.*]], [[VEC_EPILOG_VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP27:%.*]] = add i64 [[INDEX7]], 0
; CHECK-NEXT: [[TMP28:%.*]] = getelementptr i8, ptr [[START]], i64 [[TMP27]]
; CHECK-NEXT: [[TMP29:%.*]] = getelementptr i8, ptr [[TMP28]], i32 0
; CHECK-NEXT: store <vscale x 8 x i8> zeroinitializer, ptr [[TMP29]], align 1
; CHECK-NEXT: [[INDEX_NEXT8]] = add nuw i64 [[INDEX7]], [[TMP26]]
; CHECK-NEXT: [[TMP30:%.*]] = icmp eq i64 [[INDEX_NEXT8]], [[N_VEC3]]
; CHECK-NEXT: br i1 [[TMP30]], label [[VEC_EPILOG_MIDDLE_BLOCK:%.*]], label [[VEC_EPILOG_VECTOR_BODY]], !llvm.loop [[LOOP9:![0-9]+]]
; CHECK: vec.epilog.middle.block:
; CHECK-NEXT: [[CMP_N6:%.*]] = icmp eq i64 10000, [[N_VEC3]]
; CHECK-NEXT: br i1 [[CMP_N6]], label [[EXIT]], label [[VEC_EPILOG_SCALAR_PH]]
; CHECK: vec.epilog.scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC3]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[ITER_CHECK:%.*]] ]
; CHECK-NEXT: [[BC_RESUME_VAL5:%.*]] = phi ptr [ [[IND_END]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[IND_END4]], [[VEC_EPILOG_ITER_CHECK]] ], [ [[START]], [[ITER_CHECK]] ]
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[PTR_IV:%.*]] = phi ptr [ [[BC_RESUME_VAL5]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-NEXT: store i8 0, ptr [[PTR_IV]], align 1
; CHECK-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i8, ptr [[PTR_IV]], i64 1
; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i64 [[IV_NEXT]], 10000
; CHECK-NEXT: br i1 [[CMP]], label [[EXIT]], label [[LOOP]], !llvm.loop [[LOOP10:![0-9]+]]
; CHECK: exit:
; CHECK-NEXT: ret void
;
; CHECK-VF8-LABEL: @test_pr57912_pointer_induction(
; CHECK-VF8-NEXT: iter.check:
; CHECK-VF8-NEXT: br i1 false, label [[VEC_EPILOG_SCALAR_PH:%.*]], label [[VECTOR_MAIN_LOOP_ITER_CHECK:%.*]]
; CHECK-VF8: vector.main.loop.iter.check:
; CHECK-VF8-NEXT: [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-VF8-NEXT: [[TMP1:%.*]] = mul i64 [[TMP0]], 32
; CHECK-VF8-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 10000, [[TMP1]]
; CHECK-VF8-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[VEC_EPILOG_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK-VF8: vector.ph:
; CHECK-VF8-NEXT: [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-VF8-NEXT: [[TMP3:%.*]] = mul i64 [[TMP2]], 32
; CHECK-VF8-NEXT: [[N_MOD_VF:%.*]] = urem i64 10000, [[TMP3]]
; CHECK-VF8-NEXT: [[N_VEC:%.*]] = sub i64 10000, [[N_MOD_VF]]
; CHECK-VF8-NEXT: [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-VF8-NEXT: [[TMP5:%.*]] = mul i64 [[TMP4]], 32
; CHECK-VF8-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK-VF8: vector.body:
; CHECK-VF8-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-VF8-NEXT: [[TMP6:%.*]] = add i64 [[INDEX]], 0
; CHECK-VF8-NEXT: [[TMP12:%.*]] = getelementptr i8, ptr [[START:%.*]], i64 [[TMP6]]
; CHECK-VF8-NEXT: [[TMP14:%.*]] = getelementptr i8, ptr [[TMP12]], i32 0
; CHECK-VF8-NEXT: [[TMP15:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-VF8-NEXT: [[TMP16:%.*]] = mul i64 [[TMP15]], 16
; CHECK-VF8-NEXT: [[TMP17:%.*]] = getelementptr i8, ptr [[TMP12]], i64 [[TMP16]]
; CHECK-VF8-NEXT: store <vscale x 16 x i8> zeroinitializer, ptr [[TMP14]], align 1
; CHECK-VF8-NEXT: store <vscale x 16 x i8> zeroinitializer, ptr [[TMP17]], align 1
; CHECK-VF8-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP5]]
; CHECK-VF8-NEXT: [[TMP18:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-VF8-NEXT: br i1 [[TMP18]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP8:![0-9]+]]
; CHECK-VF8: middle.block:
; CHECK-VF8-NEXT: [[CMP_N:%.*]] = icmp eq i64 10000, [[N_VEC]]
; CHECK-VF8-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[VEC_EPILOG_ITER_CHECK:%.*]]
; CHECK-VF8: vec.epilog.iter.check:
; CHECK-VF8-NEXT: [[IND_END1:%.*]] = getelementptr i8, ptr [[START]], i64 [[N_VEC]]
; CHECK-VF8-NEXT: [[N_VEC_REMAINING:%.*]] = sub i64 10000, [[N_VEC]]
; CHECK-VF8-NEXT: [[MIN_EPILOG_ITERS_CHECK:%.*]] = icmp ult i64 [[N_VEC_REMAINING]], 8
; CHECK-VF8-NEXT: br i1 [[MIN_EPILOG_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH]], label [[VEC_EPILOG_PH]]
; CHECK-VF8: vec.epilog.ph:
; CHECK-VF8-NEXT: [[VEC_EPILOG_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_MAIN_LOOP_ITER_CHECK]] ]
; CHECK-VF8-NEXT: [[IND_END:%.*]] = getelementptr i8, ptr [[START]], i64 10000
; CHECK-VF8-NEXT: br label [[VEC_EPILOG_VECTOR_BODY:%.*]]
; CHECK-VF8: vec.epilog.vector.body:
; CHECK-VF8-NEXT: [[INDEX3:%.*]] = phi i64 [ [[VEC_EPILOG_RESUME_VAL]], [[VEC_EPILOG_PH]] ], [ [[INDEX_NEXT4:%.*]], [[VEC_EPILOG_VECTOR_BODY]] ]
; CHECK-VF8-NEXT: [[TMP19:%.*]] = add i64 [[INDEX3]], 0
; CHECK-VF8-NEXT: [[TMP20:%.*]] = getelementptr i8, ptr [[START]], i64 [[TMP19]]
; CHECK-VF8-NEXT: [[TMP21:%.*]] = getelementptr i8, ptr [[TMP20]], i32 0
; CHECK-VF8-NEXT: store <8 x i8> zeroinitializer, ptr [[TMP21]], align 1
; CHECK-VF8-NEXT: [[INDEX_NEXT4]] = add nuw i64 [[INDEX3]], 8
; CHECK-VF8-NEXT: [[TMP22:%.*]] = icmp eq i64 [[INDEX_NEXT4]], 10000
; CHECK-VF8-NEXT: br i1 [[TMP22]], label [[VEC_EPILOG_MIDDLE_BLOCK:%.*]], label [[VEC_EPILOG_VECTOR_BODY]], !llvm.loop [[LOOP9:![0-9]+]]
; CHECK-VF8: vec.epilog.middle.block:
; CHECK-VF8-NEXT: br i1 true, label [[EXIT]], label [[VEC_EPILOG_SCALAR_PH]]
; CHECK-VF8: vec.epilog.scalar.ph:
; CHECK-VF8-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 10000, [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[ITER_CHECK:%.*]] ]
; CHECK-VF8-NEXT: [[BC_RESUME_VAL2:%.*]] = phi ptr [ [[IND_END]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[IND_END1]], [[VEC_EPILOG_ITER_CHECK]] ], [ [[START]], [[ITER_CHECK]] ]
; CHECK-VF8-NEXT: br label [[LOOP:%.*]]
; CHECK-VF8: loop:
; CHECK-VF8-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-VF8-NEXT: [[PTR_IV:%.*]] = phi ptr [ [[BC_RESUME_VAL2]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[PTR_IV_NEXT:%.*]], [[LOOP]] ]
; CHECK-VF8-NEXT: store i8 0, ptr [[PTR_IV]], align 1
; CHECK-VF8-NEXT: [[PTR_IV_NEXT]] = getelementptr inbounds i8, ptr [[PTR_IV]], i64 1
; CHECK-VF8-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
; CHECK-VF8-NEXT: [[CMP:%.*]] = icmp eq i64 [[IV_NEXT]], 10000
; CHECK-VF8-NEXT: br i1 [[CMP]], label [[EXIT]], label [[LOOP]], !llvm.loop [[LOOP10:![0-9]+]]
; CHECK-VF8: exit:
; CHECK-VF8-NEXT: ret void
;
entry:
br label %loop
loop:
%iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
%ptr.iv = phi ptr [ %start, %entry ], [ %ptr.iv.next, %loop ]
store i8 0, ptr %ptr.iv, align 1
%ptr.iv.next = getelementptr inbounds i8, ptr %ptr.iv, i64 1
%iv.next = add nuw nsw i64 %iv, 1
%cmp = icmp eq i64 %iv.next, 10000
br i1 %cmp, label %exit, label %loop
exit:
ret void
}
attributes #0 = { "target-features"="+sve" }
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