| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -S -passes=loop-vectorize -prefer-predicate-over-epilogue=predicate-else-scalar-epilogue < %s | FileCheck --check-prefix=FORCED-TF %s |
| ; RUN: opt -S -passes=loop-vectorize < %s | FileCheck %s |
| |
| ; This tests should produce the same result as with default options, and when tail folding |
| ; is preferred, because the vectorizer can't fold the tail by masking (due to an |
| ; outside user of %incdec.ptr in %end) and should fallback to a scalar epilogue. |
| ; |
| ; The first test (@basic_loop) simply relies on the command-line switches. |
| ; The second test (@metadata) specificies its tail-folding preference via metadata. |
| ; Both tests should always generate a scalar epilogue. |
| |
| target datalayout = "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64" |
| |
| define void @basic_loop(ptr nocapture readonly %ptr, i32 %size, ptr %pos) { |
| ; FORCED-TF-LABEL: @basic_loop( |
| ; FORCED-TF-NEXT: header: |
| ; FORCED-TF-NEXT: [[PTR0:%.*]] = load ptr, ptr [[POS:%.*]], align 4 |
| ; FORCED-TF-NEXT: br label [[BODY:%.*]] |
| ; FORCED-TF: body: |
| ; FORCED-TF-NEXT: [[DEC66:%.*]] = phi i32 [ [[DEC:%.*]], [[BODY]] ], [ [[SIZE:%.*]], [[HEADER:%.*]] ] |
| ; FORCED-TF-NEXT: [[BUFF:%.*]] = phi ptr [ [[INCDEC_PTR:%.*]], [[BODY]] ], [ [[PTR:%.*]], [[HEADER]] ] |
| ; FORCED-TF-NEXT: [[INCDEC_PTR]] = getelementptr inbounds i8, ptr [[BUFF]], i32 1 |
| ; FORCED-TF-NEXT: [[DEC]] = add nsw i32 [[DEC66]], -1 |
| ; FORCED-TF-NEXT: [[TMP0:%.*]] = load i8, ptr [[INCDEC_PTR]], align 1 |
| ; FORCED-TF-NEXT: store i8 [[TMP0]], ptr [[BUFF]], align 1 |
| ; FORCED-TF-NEXT: [[TOBOOL11:%.*]] = icmp eq i32 [[DEC]], 0 |
| ; FORCED-TF-NEXT: br i1 [[TOBOOL11]], label [[END:%.*]], label [[BODY]] |
| ; FORCED-TF: end: |
| ; FORCED-TF-NEXT: [[INCDEC_PTR_LCSSA:%.*]] = phi ptr [ [[INCDEC_PTR]], [[BODY]] ] |
| ; FORCED-TF-NEXT: store ptr [[INCDEC_PTR_LCSSA]], ptr [[POS]], align 4 |
| ; FORCED-TF-NEXT: ret void |
| ; |
| ; CHECK-LABEL: @basic_loop( |
| ; CHECK-NEXT: header: |
| ; CHECK-NEXT: [[PTR0:%.*]] = load ptr, ptr [[POS:%.*]], align 4 |
| ; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[SIZE:%.*]], 4 |
| ; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i32 [[SIZE]], 4 |
| ; CHECK-NEXT: [[N_VEC:%.*]] = sub i32 [[SIZE]], [[N_MOD_VF]] |
| ; CHECK-NEXT: [[TMP0:%.*]] = sub i32 [[SIZE]], [[N_VEC]] |
| ; CHECK-NEXT: [[TMP1:%.*]] = getelementptr i8, ptr [[PTR:%.*]], i32 [[N_VEC]] |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[NEXT_GEP:%.*]] = getelementptr i8, ptr [[PTR]], i32 [[INDEX]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i8, ptr [[NEXT_GEP]], i32 1 |
| ; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x i8>, ptr [[TMP2]], align 1 |
| ; CHECK-NEXT: store <4 x i8> [[WIDE_LOAD]], ptr [[NEXT_GEP]], align 1 |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 4 |
| ; CHECK-NEXT: [[TMP3:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[TMP3]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[SIZE]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[CMP_N]], label [[END:%.*]], label [[SCALAR_PH]] |
| ; CHECK: scalar.ph: |
| ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ [[TMP0]], [[MIDDLE_BLOCK]] ], [ [[SIZE]], [[HEADER:%.*]] ] |
| ; CHECK-NEXT: [[BC_RESUME_VAL1:%.*]] = phi ptr [ [[TMP1]], [[MIDDLE_BLOCK]] ], [ [[PTR]], [[HEADER]] ] |
| ; CHECK-NEXT: br label [[BODY:%.*]] |
| ; CHECK: body: |
| ; CHECK-NEXT: [[DEC66:%.*]] = phi i32 [ [[DEC:%.*]], [[BODY]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ] |
| ; CHECK-NEXT: [[BUFF:%.*]] = phi ptr [ [[INCDEC_PTR:%.*]], [[BODY]] ], [ [[BC_RESUME_VAL1]], [[SCALAR_PH]] ] |
| ; CHECK-NEXT: [[INCDEC_PTR]] = getelementptr inbounds i8, ptr [[BUFF]], i32 1 |
| ; CHECK-NEXT: [[DEC]] = add nsw i32 [[DEC66]], -1 |
| ; CHECK-NEXT: [[TMP4:%.*]] = load i8, ptr [[INCDEC_PTR]], align 1 |
| ; CHECK-NEXT: store i8 [[TMP4]], ptr [[BUFF]], align 1 |
| ; CHECK-NEXT: [[TOBOOL11:%.*]] = icmp eq i32 [[DEC]], 0 |
| ; CHECK-NEXT: br i1 [[TOBOOL11]], label [[END]], label [[BODY]], !llvm.loop [[LOOP3:![0-9]+]] |
| ; CHECK: end: |
| ; CHECK-NEXT: [[INCDEC_PTR_LCSSA:%.*]] = phi ptr [ [[INCDEC_PTR]], [[BODY]] ], [ [[TMP1]], [[MIDDLE_BLOCK]] ] |
| ; CHECK-NEXT: store ptr [[INCDEC_PTR_LCSSA]], ptr [[POS]], align 4 |
| ; CHECK-NEXT: ret void |
| ; |
| header: |
| %ptr0 = load ptr, ptr %pos, align 4 |
| br label %body |
| |
| body: |
| %dec66 = phi i32 [ %dec, %body ], [ %size, %header ] |
| %buff = phi ptr [ %incdec.ptr, %body ], [ %ptr, %header ] |
| %incdec.ptr = getelementptr inbounds i8, ptr %buff, i32 1 |
| %dec = add nsw i32 %dec66, -1 |
| %0 = load i8, ptr %incdec.ptr, align 1 |
| store i8 %0, ptr %buff, align 1 |
| %tobool11 = icmp eq i32 %dec, 0 |
| br i1 %tobool11, label %end, label %body |
| |
| end: |
| store ptr %incdec.ptr, ptr %pos, align 4 |
| ret void |
| } |
| |
| define void @metadata(ptr nocapture readonly %ptr, i32 %size, ptr %pos) { |
| ; FORCED-TF-LABEL: @metadata( |
| ; FORCED-TF-NEXT: header: |
| ; FORCED-TF-NEXT: [[PTR0:%.*]] = load ptr, ptr [[POS:%.*]], align 4 |
| ; FORCED-TF-NEXT: br label [[VECTOR_PH:%.*]] |
| ; FORCED-TF: vector.ph: |
| ; FORCED-TF-NEXT: [[N_RND_UP:%.*]] = add i32 [[SIZE:%.*]], 3 |
| ; FORCED-TF-NEXT: [[N_MOD_VF:%.*]] = urem i32 [[N_RND_UP]], 4 |
| ; FORCED-TF-NEXT: [[N_VEC:%.*]] = sub i32 [[N_RND_UP]], [[N_MOD_VF]] |
| ; FORCED-TF-NEXT: [[TRIP_COUNT_MINUS_1:%.*]] = sub i32 [[SIZE]], 1 |
| ; FORCED-TF-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <4 x i32> poison, i32 [[TRIP_COUNT_MINUS_1]], i64 0 |
| ; FORCED-TF-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <4 x i32> [[BROADCAST_SPLATINSERT]], <4 x i32> poison, <4 x i32> zeroinitializer |
| ; FORCED-TF-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; FORCED-TF: vector.body: |
| ; FORCED-TF-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[PRED_STORE_CONTINUE11:%.*]] ] |
| ; FORCED-TF-NEXT: [[TMP0:%.*]] = add i32 [[INDEX]], 0 |
| ; FORCED-TF-NEXT: [[TMP1:%.*]] = add i32 [[INDEX]], 1 |
| ; FORCED-TF-NEXT: [[TMP2:%.*]] = add i32 [[INDEX]], 2 |
| ; FORCED-TF-NEXT: [[TMP3:%.*]] = add i32 [[INDEX]], 3 |
| ; FORCED-TF-NEXT: [[NEXT_GEP:%.*]] = getelementptr i8, ptr [[PTR:%.*]], i32 [[TMP0]] |
| ; FORCED-TF-NEXT: [[NEXT_GEP1:%.*]] = getelementptr i8, ptr [[PTR]], i32 [[TMP1]] |
| ; FORCED-TF-NEXT: [[NEXT_GEP2:%.*]] = getelementptr i8, ptr [[PTR]], i32 [[TMP2]] |
| ; FORCED-TF-NEXT: [[NEXT_GEP3:%.*]] = getelementptr i8, ptr [[PTR]], i32 [[TMP3]] |
| ; FORCED-TF-NEXT: [[TMP4:%.*]] = insertelement <4 x ptr> poison, ptr [[NEXT_GEP]], i32 0 |
| ; FORCED-TF-NEXT: [[TMP5:%.*]] = insertelement <4 x ptr> [[TMP4]], ptr [[NEXT_GEP1]], i32 1 |
| ; FORCED-TF-NEXT: [[TMP6:%.*]] = insertelement <4 x ptr> [[TMP5]], ptr [[NEXT_GEP2]], i32 2 |
| ; FORCED-TF-NEXT: [[TMP7:%.*]] = insertelement <4 x ptr> [[TMP6]], ptr [[NEXT_GEP3]], i32 3 |
| ; FORCED-TF-NEXT: [[BROADCAST_SPLATINSERT4:%.*]] = insertelement <4 x i32> poison, i32 [[INDEX]], i64 0 |
| ; FORCED-TF-NEXT: [[BROADCAST_SPLAT5:%.*]] = shufflevector <4 x i32> [[BROADCAST_SPLATINSERT4]], <4 x i32> poison, <4 x i32> zeroinitializer |
| ; FORCED-TF-NEXT: [[VEC_IV:%.*]] = add <4 x i32> [[BROADCAST_SPLAT5]], <i32 0, i32 1, i32 2, i32 3> |
| ; FORCED-TF-NEXT: [[TMP8:%.*]] = icmp ule <4 x i32> [[VEC_IV]], [[BROADCAST_SPLAT]] |
| ; FORCED-TF-NEXT: [[TMP9:%.*]] = getelementptr inbounds i8, ptr [[NEXT_GEP]], i32 1 |
| ; FORCED-TF-NEXT: [[TMP10:%.*]] = getelementptr inbounds i8, ptr [[NEXT_GEP1]], i32 1 |
| ; FORCED-TF-NEXT: [[TMP11:%.*]] = getelementptr inbounds i8, ptr [[NEXT_GEP2]], i32 1 |
| ; FORCED-TF-NEXT: [[TMP12:%.*]] = getelementptr inbounds i8, ptr [[NEXT_GEP3]], i32 1 |
| ; FORCED-TF-NEXT: [[TMP13:%.*]] = insertelement <4 x ptr> poison, ptr [[TMP9]], i32 0 |
| ; FORCED-TF-NEXT: [[TMP14:%.*]] = insertelement <4 x ptr> [[TMP13]], ptr [[TMP10]], i32 1 |
| ; FORCED-TF-NEXT: [[TMP15:%.*]] = insertelement <4 x ptr> [[TMP14]], ptr [[TMP11]], i32 2 |
| ; FORCED-TF-NEXT: [[TMP16:%.*]] = insertelement <4 x ptr> [[TMP15]], ptr [[TMP12]], i32 3 |
| ; FORCED-TF-NEXT: [[TMP17:%.*]] = extractelement <4 x i1> [[TMP8]], i32 0 |
| ; FORCED-TF-NEXT: br i1 [[TMP17]], label [[PRED_STORE_IF:%.*]], label [[PRED_STORE_CONTINUE:%.*]] |
| ; FORCED-TF: pred.store.if: |
| ; FORCED-TF-NEXT: [[TMP18:%.*]] = load i8, ptr [[TMP9]], align 1 |
| ; FORCED-TF-NEXT: store i8 [[TMP18]], ptr [[NEXT_GEP]], align 1 |
| ; FORCED-TF-NEXT: br label [[PRED_STORE_CONTINUE]] |
| ; FORCED-TF: pred.store.continue: |
| ; FORCED-TF-NEXT: [[TMP19:%.*]] = extractelement <4 x i1> [[TMP8]], i32 1 |
| ; FORCED-TF-NEXT: br i1 [[TMP19]], label [[PRED_STORE_IF6:%.*]], label [[PRED_STORE_CONTINUE7:%.*]] |
| ; FORCED-TF: pred.store.if6: |
| ; FORCED-TF-NEXT: [[TMP20:%.*]] = load i8, ptr [[TMP10]], align 1 |
| ; FORCED-TF-NEXT: store i8 [[TMP20]], ptr [[NEXT_GEP1]], align 1 |
| ; FORCED-TF-NEXT: br label [[PRED_STORE_CONTINUE7]] |
| ; FORCED-TF: pred.store.continue7: |
| ; FORCED-TF-NEXT: [[TMP21:%.*]] = extractelement <4 x i1> [[TMP8]], i32 2 |
| ; FORCED-TF-NEXT: br i1 [[TMP21]], label [[PRED_STORE_IF8:%.*]], label [[PRED_STORE_CONTINUE9:%.*]] |
| ; FORCED-TF: pred.store.if8: |
| ; FORCED-TF-NEXT: [[TMP22:%.*]] = load i8, ptr [[TMP11]], align 1 |
| ; FORCED-TF-NEXT: store i8 [[TMP22]], ptr [[NEXT_GEP2]], align 1 |
| ; FORCED-TF-NEXT: br label [[PRED_STORE_CONTINUE9]] |
| ; FORCED-TF: pred.store.continue9: |
| ; FORCED-TF-NEXT: [[TMP23:%.*]] = extractelement <4 x i1> [[TMP8]], i32 3 |
| ; FORCED-TF-NEXT: br i1 [[TMP23]], label [[PRED_STORE_IF10:%.*]], label [[PRED_STORE_CONTINUE11]] |
| ; FORCED-TF: pred.store.if10: |
| ; FORCED-TF-NEXT: [[TMP24:%.*]] = load i8, ptr [[TMP12]], align 1 |
| ; FORCED-TF-NEXT: store i8 [[TMP24]], ptr [[NEXT_GEP3]], align 1 |
| ; FORCED-TF-NEXT: br label [[PRED_STORE_CONTINUE11]] |
| ; FORCED-TF: pred.store.continue11: |
| ; FORCED-TF-NEXT: [[INDEX_NEXT]] = add i32 [[INDEX]], 4 |
| ; FORCED-TF-NEXT: [[TMP25:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]] |
| ; FORCED-TF-NEXT: br i1 [[TMP25]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]] |
| ; FORCED-TF: middle.block: |
| ; FORCED-TF-NEXT: [[TMP26:%.*]] = xor <4 x i1> [[TMP8]], splat (i1 true) |
| ; FORCED-TF-NEXT: [[TMP27:%.*]] = call i64 @llvm.experimental.cttz.elts.i64.v4i1(<4 x i1> [[TMP26]], i1 false) |
| ; FORCED-TF-NEXT: [[TMP28:%.*]] = sub i64 [[TMP27]], 1 |
| ; FORCED-TF-NEXT: [[TMP29:%.*]] = extractelement <4 x ptr> [[TMP16]], i64 [[TMP28]] |
| ; FORCED-TF-NEXT: br label [[END:%.*]] |
| ; FORCED-TF: end: |
| ; FORCED-TF-NEXT: store ptr [[TMP29]], ptr [[POS]], align 4 |
| ; FORCED-TF-NEXT: ret void |
| ; |
| ; CHECK-LABEL: @metadata( |
| ; CHECK-NEXT: header: |
| ; CHECK-NEXT: [[PTR0:%.*]] = load ptr, ptr [[POS:%.*]], align 4 |
| ; CHECK-NEXT: br label [[VECTOR_PH:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: [[N_RND_UP:%.*]] = add i32 [[SIZE:%.*]], 3 |
| ; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i32 [[N_RND_UP]], 4 |
| ; CHECK-NEXT: [[N_VEC:%.*]] = sub i32 [[N_RND_UP]], [[N_MOD_VF]] |
| ; CHECK-NEXT: [[TRIP_COUNT_MINUS_1:%.*]] = sub i32 [[SIZE]], 1 |
| ; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <4 x i32> poison, i32 [[TRIP_COUNT_MINUS_1]], i64 0 |
| ; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <4 x i32> [[BROADCAST_SPLATINSERT]], <4 x i32> poison, <4 x i32> zeroinitializer |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[PRED_STORE_CONTINUE11:%.*]] ] |
| ; CHECK-NEXT: [[TMP0:%.*]] = add i32 [[INDEX]], 0 |
| ; CHECK-NEXT: [[TMP1:%.*]] = add i32 [[INDEX]], 1 |
| ; CHECK-NEXT: [[TMP2:%.*]] = add i32 [[INDEX]], 2 |
| ; CHECK-NEXT: [[TMP3:%.*]] = add i32 [[INDEX]], 3 |
| ; CHECK-NEXT: [[NEXT_GEP:%.*]] = getelementptr i8, ptr [[PTR:%.*]], i32 [[TMP0]] |
| ; CHECK-NEXT: [[NEXT_GEP1:%.*]] = getelementptr i8, ptr [[PTR]], i32 [[TMP1]] |
| ; CHECK-NEXT: [[NEXT_GEP2:%.*]] = getelementptr i8, ptr [[PTR]], i32 [[TMP2]] |
| ; CHECK-NEXT: [[NEXT_GEP3:%.*]] = getelementptr i8, ptr [[PTR]], i32 [[TMP3]] |
| ; CHECK-NEXT: [[TMP4:%.*]] = insertelement <4 x ptr> poison, ptr [[NEXT_GEP]], i32 0 |
| ; CHECK-NEXT: [[TMP5:%.*]] = insertelement <4 x ptr> [[TMP4]], ptr [[NEXT_GEP1]], i32 1 |
| ; CHECK-NEXT: [[TMP6:%.*]] = insertelement <4 x ptr> [[TMP5]], ptr [[NEXT_GEP2]], i32 2 |
| ; CHECK-NEXT: [[TMP7:%.*]] = insertelement <4 x ptr> [[TMP6]], ptr [[NEXT_GEP3]], i32 3 |
| ; CHECK-NEXT: [[BROADCAST_SPLATINSERT4:%.*]] = insertelement <4 x i32> poison, i32 [[INDEX]], i64 0 |
| ; CHECK-NEXT: [[BROADCAST_SPLAT5:%.*]] = shufflevector <4 x i32> [[BROADCAST_SPLATINSERT4]], <4 x i32> poison, <4 x i32> zeroinitializer |
| ; CHECK-NEXT: [[VEC_IV:%.*]] = add <4 x i32> [[BROADCAST_SPLAT5]], <i32 0, i32 1, i32 2, i32 3> |
| ; CHECK-NEXT: [[TMP8:%.*]] = icmp ule <4 x i32> [[VEC_IV]], [[BROADCAST_SPLAT]] |
| ; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds i8, ptr [[NEXT_GEP]], i32 1 |
| ; CHECK-NEXT: [[TMP10:%.*]] = getelementptr inbounds i8, ptr [[NEXT_GEP1]], i32 1 |
| ; CHECK-NEXT: [[TMP11:%.*]] = getelementptr inbounds i8, ptr [[NEXT_GEP2]], i32 1 |
| ; CHECK-NEXT: [[TMP12:%.*]] = getelementptr inbounds i8, ptr [[NEXT_GEP3]], i32 1 |
| ; CHECK-NEXT: [[TMP13:%.*]] = insertelement <4 x ptr> poison, ptr [[TMP9]], i32 0 |
| ; CHECK-NEXT: [[TMP14:%.*]] = insertelement <4 x ptr> [[TMP13]], ptr [[TMP10]], i32 1 |
| ; CHECK-NEXT: [[TMP15:%.*]] = insertelement <4 x ptr> [[TMP14]], ptr [[TMP11]], i32 2 |
| ; CHECK-NEXT: [[TMP16:%.*]] = insertelement <4 x ptr> [[TMP15]], ptr [[TMP12]], i32 3 |
| ; CHECK-NEXT: [[TMP17:%.*]] = extractelement <4 x i1> [[TMP8]], i32 0 |
| ; CHECK-NEXT: br i1 [[TMP17]], label [[PRED_STORE_IF:%.*]], label [[PRED_STORE_CONTINUE:%.*]] |
| ; CHECK: pred.store.if: |
| ; CHECK-NEXT: [[TMP18:%.*]] = load i8, ptr [[TMP9]], align 1 |
| ; CHECK-NEXT: store i8 [[TMP18]], ptr [[NEXT_GEP]], align 1 |
| ; CHECK-NEXT: br label [[PRED_STORE_CONTINUE]] |
| ; CHECK: pred.store.continue: |
| ; CHECK-NEXT: [[TMP19:%.*]] = extractelement <4 x i1> [[TMP8]], i32 1 |
| ; CHECK-NEXT: br i1 [[TMP19]], label [[PRED_STORE_IF6:%.*]], label [[PRED_STORE_CONTINUE7:%.*]] |
| ; CHECK: pred.store.if6: |
| ; CHECK-NEXT: [[TMP20:%.*]] = load i8, ptr [[TMP10]], align 1 |
| ; CHECK-NEXT: store i8 [[TMP20]], ptr [[NEXT_GEP1]], align 1 |
| ; CHECK-NEXT: br label [[PRED_STORE_CONTINUE7]] |
| ; CHECK: pred.store.continue7: |
| ; CHECK-NEXT: [[TMP21:%.*]] = extractelement <4 x i1> [[TMP8]], i32 2 |
| ; CHECK-NEXT: br i1 [[TMP21]], label [[PRED_STORE_IF8:%.*]], label [[PRED_STORE_CONTINUE9:%.*]] |
| ; CHECK: pred.store.if8: |
| ; CHECK-NEXT: [[TMP22:%.*]] = load i8, ptr [[TMP11]], align 1 |
| ; CHECK-NEXT: store i8 [[TMP22]], ptr [[NEXT_GEP2]], align 1 |
| ; CHECK-NEXT: br label [[PRED_STORE_CONTINUE9]] |
| ; CHECK: pred.store.continue9: |
| ; CHECK-NEXT: [[TMP23:%.*]] = extractelement <4 x i1> [[TMP8]], i32 3 |
| ; CHECK-NEXT: br i1 [[TMP23]], label [[PRED_STORE_IF10:%.*]], label [[PRED_STORE_CONTINUE11]] |
| ; CHECK: pred.store.if10: |
| ; CHECK-NEXT: [[TMP24:%.*]] = load i8, ptr [[TMP12]], align 1 |
| ; CHECK-NEXT: store i8 [[TMP24]], ptr [[NEXT_GEP3]], align 1 |
| ; CHECK-NEXT: br label [[PRED_STORE_CONTINUE11]] |
| ; CHECK: pred.store.continue11: |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add i32 [[INDEX]], 4 |
| ; CHECK-NEXT: [[TMP25:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[TMP25]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[TMP26:%.*]] = xor <4 x i1> [[TMP8]], splat (i1 true) |
| ; CHECK-NEXT: [[TMP27:%.*]] = call i64 @llvm.experimental.cttz.elts.i64.v4i1(<4 x i1> [[TMP26]], i1 false) |
| ; CHECK-NEXT: [[TMP28:%.*]] = sub i64 [[TMP27]], 1 |
| ; CHECK-NEXT: [[TMP29:%.*]] = extractelement <4 x ptr> [[TMP16]], i64 [[TMP28]] |
| ; CHECK-NEXT: br label [[END:%.*]] |
| ; CHECK: end: |
| ; CHECK-NEXT: store ptr [[TMP29]], ptr [[POS]], align 4 |
| ; CHECK-NEXT: ret void |
| ; |
| header: |
| %ptr0 = load ptr, ptr %pos, align 4 |
| br label %body |
| |
| body: |
| %dec66 = phi i32 [ %dec, %body ], [ %size, %header ] |
| %buff = phi ptr [ %incdec.ptr, %body ], [ %ptr, %header ] |
| %incdec.ptr = getelementptr inbounds i8, ptr %buff, i32 1 |
| %dec = add nsw i32 %dec66, -1 |
| %0 = load i8, ptr %incdec.ptr, align 1 |
| store i8 %0, ptr %buff, align 1 |
| %tobool11 = icmp eq i32 %dec, 0 |
| br i1 %tobool11, label %end, label %body, !llvm.loop !1 |
| |
| end: |
| store ptr %incdec.ptr, ptr %pos, align 4 |
| ret void |
| } |
| |
| !1 = distinct !{!1, !2, !3} |
| !2 = !{!"llvm.loop.vectorize.predicate.enable", i1 true} |
| !3 = !{!"llvm.loop.vectorize.enable", i1 true} |
