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[LV][AArch64][NFC]: Change TC in a test case. #157512

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Sep 10, 2025
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[LV][AArch64][NFC]: Change TC in a test case. #157512

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52 changes: 28 additions & 24 deletions llvm/test/Transforms/LoopVectorize/AArch64/sve-epilog-vscale-fixed.ll
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Original file line number Diff line number Diff line change
Expand Up @@ -24,20 +24,21 @@ target triple = "aarch64-linux-gnu"
; DEBUG-EPILOG-PREFER-SCALABLE: Create Skeleton for epilogue vectorized loop (first pass)
; DEBUG-EPILOG-PREFER-SCALABLE: Main Loop VF:vscale x 16, Main Loop UF:2, Epilogue Loop VF:vscale x 8, Epilogue Loop UF:1

define void @main_vf_vscale_x_16(ptr %A) #0 {
define void @main_vf_vscale_x_16(ptr %A, i64 %n) #0 {
; CHECK-LABEL: @main_vf_vscale_x_16(
; CHECK-NEXT: iter.check:
; CHECK-NEXT: br i1 false, label [[VEC_EPILOG_SCALAR_PH:%.*]], label [[VECTOR_MAIN_LOOP_ITER_CHECK:%.*]]
; CHECK-NEXT: [[MIN_ITERS_CHECK1:%.*]] = icmp ult i64 [[N:%.*]], 8
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK1]], 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:%.*]] = shl nuw i64 [[TMP0]], 5
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 1024, [[TMP1]]
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N]], [[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 nuw i64 [[TMP2]], 32
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 1024, [[TMP3]]
; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 1024, [[N_MOD_VF]]
; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[N]], [[TMP3]]
; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[N]], [[N_MOD_VF]]
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
Expand All @@ -51,45 +52,48 @@ define void @main_vf_vscale_x_16(ptr %A) #0 {
; CHECK-NEXT: [[TMP8:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[TMP8]], 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: [[CMP_N:%.*]] = icmp eq i64 [[N]], [[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: [[N_VEC_REMAINING:%.*]] = sub i64 [[N]], [[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-NEXT: br i1 [[MIN_EPILOG_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH]], label [[VEC_EPILOG_PH]], !prof [[PROF3:![0-9]+]]
; 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: [[N_MOD_VF2:%.*]] = urem i64 [[N]], 8
; CHECK-NEXT: [[N_VEC3:%.*]] = sub i64 [[N]], [[N_MOD_VF2]]
; 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: [[TMP9:%.*]] = getelementptr inbounds i8, ptr [[A]], i64 [[INDEX1]]
; CHECK-NEXT: store <8 x i8> splat (i8 1), ptr [[TMP9]], align 1
; CHECK-NEXT: [[INDEX_NEXT2]] = add nuw i64 [[INDEX1]], 8
; CHECK-NEXT: [[TMP10:%.*]] = icmp eq i64 [[INDEX_NEXT2]], 1024
; CHECK-NEXT: br i1 [[TMP10]], label [[VEC_EPILOG_MIDDLE_BLOCK:%.*]], label [[VEC_EPILOG_VECTOR_BODY]], !llvm.loop [[LOOP3:![0-9]+]]
; CHECK-NEXT: [[TMP10:%.*]] = icmp eq i64 [[INDEX_NEXT2]], [[N_VEC3]]
; CHECK-NEXT: br i1 [[TMP10]], label [[VEC_EPILOG_MIDDLE_BLOCK:%.*]], label [[VEC_EPILOG_VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
; CHECK: vec.epilog.middle.block:
; CHECK-NEXT: br i1 true, label [[EXIT]], label [[VEC_EPILOG_SCALAR_PH]]
; CHECK-NEXT: [[CMP_N6:%.*]] = icmp eq i64 [[N]], [[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 [ 1024, [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[ITER_CHECK:%.*]] ]
; 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-EPILOG-PREFER-SCALABLE-LABEL: @main_vf_vscale_x_16(
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: iter.check:
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[TMP1:%.*]] = shl nuw i64 [[TMP0]], 3
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 1024, [[TMP1]]
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N:%.*]], [[TMP1]]
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH:%.*]], label [[VECTOR_MAIN_LOOP_ITER_CHECK:%.*]]
; CHECK-EPILOG-PREFER-SCALABLE: vector.main.loop.iter.check:
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[TMP3:%.*]] = shl nuw i64 [[TMP2]], 5
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[MIN_ITERS_CHECK1:%.*]] = icmp ult i64 1024, [[TMP3]]
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[MIN_ITERS_CHECK1:%.*]] = icmp ult i64 [[N]], [[TMP3]]
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: br i1 [[MIN_ITERS_CHECK1]], label [[VEC_EPILOG_PH:%.*]], label [[VECTOR_PH:%.*]]
; CHECK-EPILOG-PREFER-SCALABLE: vector.ph:
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[TMP4:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[TMP5:%.*]] = mul nuw i64 [[TMP4]], 32
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[N_MOD_VF:%.*]] = urem i64 1024, [[TMP5]]
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[N_VEC:%.*]] = sub i64 1024, [[N_MOD_VF]]
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[N]], [[TMP5]]
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[N_VEC:%.*]] = sub i64 [[N]], [[N_MOD_VF]]
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK-EPILOG-PREFER-SCALABLE: vector.body:
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
Expand All @@ -103,30 +107,30 @@ define void @main_vf_vscale_x_16(ptr %A) #0 {
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[TMP10:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: br i1 [[TMP10]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK-EPILOG-PREFER-SCALABLE: middle.block:
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[CMP_N:%.*]] = icmp eq i64 1024, [[N_VEC]]
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]]
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[VEC_EPILOG_ITER_CHECK:%.*]]
; CHECK-EPILOG-PREFER-SCALABLE: vec.epilog.iter.check:
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[N_VEC_REMAINING:%.*]] = sub i64 1024, [[N_VEC]]
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[N_VEC_REMAINING:%.*]] = sub i64 [[N]], [[N_VEC]]
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[TMP11:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[TMP12:%.*]] = shl nuw i64 [[TMP11]], 3
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[MIN_EPILOG_ITERS_CHECK:%.*]] = icmp ult i64 [[N_VEC_REMAINING]], [[TMP12]]
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: br i1 [[MIN_EPILOG_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH]], label [[VEC_EPILOG_PH]]
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: br i1 [[MIN_EPILOG_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH]], label [[VEC_EPILOG_PH]], !prof [[PROF3:![0-9]+]]
; CHECK-EPILOG-PREFER-SCALABLE: vec.epilog.ph:
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[VEC_EPILOG_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_MAIN_LOOP_ITER_CHECK]] ]
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[TMP13:%.*]] = call i64 @llvm.vscale.i64()
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[TMP14:%.*]] = mul nuw i64 [[TMP13]], 8
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[N_MOD_VF2:%.*]] = urem i64 1024, [[TMP14]]
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[N_VEC3:%.*]] = sub i64 1024, [[N_MOD_VF2]]
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[N_MOD_VF2:%.*]] = urem i64 [[N]], [[TMP14]]
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[N_VEC3:%.*]] = sub i64 [[N]], [[N_MOD_VF2]]
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: br label [[VEC_EPILOG_VECTOR_BODY:%.*]]
; CHECK-EPILOG-PREFER-SCALABLE: vec.epilog.vector.body:
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[INDEX4:%.*]] = phi i64 [ [[VEC_EPILOG_RESUME_VAL]], [[VEC_EPILOG_PH]] ], [ [[INDEX_NEXT5:%.*]], [[VEC_EPILOG_VECTOR_BODY]] ]
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[TMP15:%.*]] = getelementptr inbounds i8, ptr [[A]], i64 [[INDEX4]]
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: store <vscale x 8 x i8> splat (i8 1), ptr [[TMP15]], align 1
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[INDEX_NEXT5]] = add nuw i64 [[INDEX4]], [[TMP14]]
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[TMP16:%.*]] = icmp eq i64 [[INDEX_NEXT5]], [[N_VEC3]]
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: br i1 [[TMP16]], label [[VEC_EPILOG_MIDDLE_BLOCK:%.*]], label [[VEC_EPILOG_VECTOR_BODY]], !llvm.loop [[LOOP3:![0-9]+]]
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: br i1 [[TMP16]], label [[VEC_EPILOG_MIDDLE_BLOCK:%.*]], label [[VEC_EPILOG_VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
; CHECK-EPILOG-PREFER-SCALABLE: vec.epilog.middle.block:
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[CMP_N6:%.*]] = icmp eq i64 1024, [[N_VEC3]]
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[CMP_N6:%.*]] = icmp eq i64 [[N]], [[N_VEC3]]
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: br i1 [[CMP_N6]], label [[EXIT]], label [[VEC_EPILOG_SCALAR_PH]]
; CHECK-EPILOG-PREFER-SCALABLE: vec.epilog.scalar.ph:
; CHECK-EPILOG-PREFER-SCALABLE-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC3]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[ITER_CHECK:%.*]] ]
Expand All @@ -141,7 +145,7 @@ 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
%exitcond = icmp ne i64 %iv.next, %n
br i1 %exitcond, label %for.body, label %exit

exit:
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