| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4 |
| ; RUN: opt -S < %s -p loop-vectorize -enable-early-exit-vectorization | FileCheck %s --check-prefixes=CHECK |
| |
| target triple = "aarch64-unknown-linux-gnu" |
| |
| declare void @init_mem(ptr, i64); |
| |
| define i64 @same_exit_block_pre_inc_use1() #1 { |
| ; CHECK-LABEL: define i64 @same_exit_block_pre_inc_use1( |
| ; CHECK-SAME: ) #[[ATTR0:[0-9]+]] { |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[P1:%.*]] = alloca [1024 x i8], align 4 |
| ; CHECK-NEXT: [[P2:%.*]] = alloca [1024 x i8], align 4 |
| ; CHECK-NEXT: call void @init_mem(ptr [[P1]], i64 1024) |
| ; CHECK-NEXT: call void @init_mem(ptr [[P2]], i64 1024) |
| ; CHECK-NEXT: [[TMP0:%.*]] = call i64 @llvm.vscale.i64() |
| ; CHECK-NEXT: [[TMP1:%.*]] = mul i64 [[TMP0]], 16 |
| ; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 64, [[TMP1]] |
| ; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: [[TMP2:%.*]] = call i64 @llvm.vscale.i64() |
| ; CHECK-NEXT: [[TMP3:%.*]] = mul i64 [[TMP2]], 16 |
| ; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 64, [[TMP3]] |
| ; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 64, [[N_MOD_VF]] |
| ; CHECK-NEXT: [[TMP4:%.*]] = call i64 @llvm.vscale.i64() |
| ; CHECK-NEXT: [[TMP5:%.*]] = mul i64 [[TMP4]], 16 |
| ; CHECK-NEXT: [[TMP6:%.*]] = add i64 3, [[N_VEC]] |
| ; CHECK-NEXT: [[TMP7:%.*]] = call <vscale x 16 x i64> @llvm.stepvector.nxv16i64() |
| ; CHECK-NEXT: [[TMP8:%.*]] = mul <vscale x 16 x i64> [[TMP7]], splat (i64 1) |
| ; CHECK-NEXT: [[INDUCTION:%.*]] = add <vscale x 16 x i64> splat (i64 3), [[TMP8]] |
| ; CHECK-NEXT: [[TMP9:%.*]] = mul i64 1, [[TMP5]] |
| ; CHECK-NEXT: [[DOTSPLATINSERT:%.*]] = insertelement <vscale x 16 x i64> poison, i64 [[TMP9]], i64 0 |
| ; CHECK-NEXT: [[DOTSPLAT:%.*]] = shufflevector <vscale x 16 x i64> [[DOTSPLATINSERT]], <vscale x 16 x i64> poison, <vscale x 16 x i32> zeroinitializer |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX1:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT3:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[VEC_IND:%.*]] = phi <vscale x 16 x i64> [ [[INDUCTION]], [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[OFFSET_IDX:%.*]] = add i64 3, [[INDEX1]] |
| ; CHECK-NEXT: [[TMP10:%.*]] = add i64 [[OFFSET_IDX]], 0 |
| ; CHECK-NEXT: [[TMP11:%.*]] = getelementptr inbounds i8, ptr [[P1]], i64 [[TMP10]] |
| ; CHECK-NEXT: [[TMP12:%.*]] = getelementptr inbounds i8, ptr [[TMP11]], i32 0 |
| ; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <vscale x 16 x i8>, ptr [[TMP12]], align 1 |
| ; CHECK-NEXT: [[TMP13:%.*]] = getelementptr inbounds i8, ptr [[P2]], i64 [[TMP10]] |
| ; CHECK-NEXT: [[TMP14:%.*]] = getelementptr inbounds i8, ptr [[TMP13]], i32 0 |
| ; CHECK-NEXT: [[WIDE_LOAD2:%.*]] = load <vscale x 16 x i8>, ptr [[TMP14]], align 1 |
| ; CHECK-NEXT: [[TMP15:%.*]] = icmp eq <vscale x 16 x i8> [[WIDE_LOAD]], [[WIDE_LOAD2]] |
| ; CHECK-NEXT: [[INDEX_NEXT3]] = add nuw i64 [[INDEX1]], [[TMP5]] |
| ; CHECK-NEXT: [[TMP16:%.*]] = xor <vscale x 16 x i1> [[TMP15]], splat (i1 true) |
| ; CHECK-NEXT: [[TMP17:%.*]] = call i1 @llvm.vector.reduce.or.nxv16i1(<vscale x 16 x i1> [[TMP16]]) |
| ; CHECK-NEXT: [[TMP18:%.*]] = icmp eq i64 [[INDEX_NEXT3]], [[N_VEC]] |
| ; CHECK-NEXT: [[VEC_IND_NEXT]] = add <vscale x 16 x i64> [[VEC_IND]], [[DOTSPLAT]] |
| ; CHECK-NEXT: [[TMP19:%.*]] = or i1 [[TMP17]], [[TMP18]] |
| ; CHECK-NEXT: br i1 [[TMP19]], label [[MIDDLE_SPLIT:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]] |
| ; CHECK: middle.split: |
| ; CHECK-NEXT: br i1 [[TMP17]], label [[VECTOR_EARLY_EXIT:%.*]], label [[MIDDLE_BLOCK:%.*]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 64, [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[CMP_N]], label [[LOOP_END:%.*]], label [[SCALAR_PH]] |
| ; CHECK: vector.early.exit: |
| ; CHECK-NEXT: [[FIRST_ACTIVE_LANE:%.*]] = call i64 @llvm.experimental.cttz.elts.i64.nxv16i1(<vscale x 16 x i1> [[TMP16]], i1 true) |
| ; CHECK-NEXT: [[EARLY_EXIT_VALUE:%.*]] = extractelement <vscale x 16 x i64> [[VEC_IND]], i64 [[FIRST_ACTIVE_LANE]] |
| ; CHECK-NEXT: br label [[LOOP_END]] |
| ; CHECK: scalar.ph: |
| ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[TMP6]], [[MIDDLE_BLOCK]] ], [ 3, [[ENTRY:%.*]] ] |
| ; CHECK-NEXT: br label [[LOOP:%.*]] |
| ; CHECK: loop: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ [[INDEX_NEXT:%.*]], [[LOOP_INC:%.*]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ] |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i8, ptr [[P1]], i64 [[INDEX]] |
| ; CHECK-NEXT: [[LD1:%.*]] = load i8, ptr [[ARRAYIDX]], align 1 |
| ; CHECK-NEXT: [[ARRAYIDX1:%.*]] = getelementptr inbounds i8, ptr [[P2]], i64 [[INDEX]] |
| ; CHECK-NEXT: [[LD2:%.*]] = load i8, ptr [[ARRAYIDX1]], align 1 |
| ; CHECK-NEXT: [[CMP3:%.*]] = icmp eq i8 [[LD1]], [[LD2]] |
| ; CHECK-NEXT: br i1 [[CMP3]], label [[LOOP_INC]], label [[LOOP_END]] |
| ; CHECK: loop.inc: |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 1 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[INDEX_NEXT]], 67 |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[LOOP]], label [[LOOP_END]], !llvm.loop [[LOOP3:![0-9]+]] |
| ; CHECK: loop.end: |
| ; CHECK-NEXT: [[RETVAL:%.*]] = phi i64 [ [[INDEX]], [[LOOP]] ], [ 67, [[LOOP_INC]] ], [ 67, [[MIDDLE_BLOCK]] ], [ [[EARLY_EXIT_VALUE]], [[VECTOR_EARLY_EXIT]] ] |
| ; CHECK-NEXT: ret i64 [[RETVAL]] |
| ; |
| entry: |
| %p1 = alloca [1024 x i8] |
| %p2 = alloca [1024 x i8] |
| call void @init_mem(ptr %p1, i64 1024) |
| call void @init_mem(ptr %p2, i64 1024) |
| br label %loop |
| |
| loop: |
| %index = phi i64 [ %index.next, %loop.inc ], [ 3, %entry ] |
| %arrayidx = getelementptr inbounds i8, ptr %p1, i64 %index |
| %ld1 = load i8, ptr %arrayidx, align 1 |
| %arrayidx1 = getelementptr inbounds i8, ptr %p2, i64 %index |
| %ld2 = load i8, ptr %arrayidx1, align 1 |
| %cmp3 = icmp eq i8 %ld1, %ld2 |
| br i1 %cmp3, label %loop.inc, label %loop.end |
| |
| loop.inc: |
| %index.next = add i64 %index, 1 |
| %exitcond = icmp ne i64 %index.next, 67 |
| br i1 %exitcond, label %loop, label %loop.end |
| |
| loop.end: |
| %retval = phi i64 [ %index, %loop ], [ 67, %loop.inc ] |
| ret i64 %retval |
| } |
| |
| |
| ; In this example the early exit block appears in the list of ExitNotTaken |
| ; SCEVs, but is not computable. |
| define i64 @same_exit_block_pre_inc_use4() { |
| ; CHECK-LABEL: define i64 @same_exit_block_pre_inc_use4() { |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[P1:%.*]] = alloca [1024 x i64], align 8 |
| ; CHECK-NEXT: [[P2:%.*]] = alloca [1024 x i64], align 8 |
| ; CHECK-NEXT: call void @init_mem(ptr [[P1]], i64 1024) |
| ; CHECK-NEXT: call void @init_mem(ptr [[P2]], i64 1024) |
| ; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX1:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT2:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[VEC_IND:%.*]] = phi <2 x i64> [ <i64 3, i64 4>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[OFFSET_IDX:%.*]] = add i64 3, [[INDEX1]] |
| ; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[OFFSET_IDX]], 0 |
| ; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i64, ptr [[P1]], i64 [[TMP0]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i64, ptr [[TMP1]], i32 0 |
| ; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <2 x i64>, ptr [[TMP2]], align 1 |
| ; CHECK-NEXT: [[TMP3:%.*]] = icmp ult <2 x i64> [[VEC_IND]], [[WIDE_LOAD]] |
| ; CHECK-NEXT: [[INDEX_NEXT2]] = add nuw i64 [[INDEX1]], 2 |
| ; CHECK-NEXT: [[TMP4:%.*]] = xor <2 x i1> [[TMP3]], splat (i1 true) |
| ; CHECK-NEXT: [[TMP5:%.*]] = call i1 @llvm.vector.reduce.or.v2i1(<2 x i1> [[TMP4]]) |
| ; CHECK-NEXT: [[TMP6:%.*]] = icmp eq i64 [[INDEX_NEXT2]], 64 |
| ; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i64> [[VEC_IND]], splat (i64 2) |
| ; CHECK-NEXT: [[TMP7:%.*]] = or i1 [[TMP5]], [[TMP6]] |
| ; CHECK-NEXT: br i1 [[TMP7]], label [[MIDDLE_SPLIT:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]] |
| ; CHECK: middle.split: |
| ; CHECK-NEXT: br i1 [[TMP5]], label [[VECTOR_EARLY_EXIT:%.*]], label [[MIDDLE_BLOCK:%.*]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: br i1 true, label [[LOOP_END:%.*]], label [[SCALAR_PH]] |
| ; CHECK: vector.early.exit: |
| ; CHECK-NEXT: [[FIRST_ACTIVE_LANE:%.*]] = call i64 @llvm.experimental.cttz.elts.i64.v2i1(<2 x i1> [[TMP4]], i1 true) |
| ; CHECK-NEXT: [[EARLY_EXIT_VALUE:%.*]] = extractelement <2 x i64> [[VEC_IND]], i64 [[FIRST_ACTIVE_LANE]] |
| ; CHECK-NEXT: br label [[LOOP_END]] |
| ; CHECK: scalar.ph: |
| ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 67, [[MIDDLE_BLOCK]] ], [ 3, [[ENTRY:%.*]] ] |
| ; CHECK-NEXT: br label [[LOOP:%.*]] |
| ; CHECK: loop: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ [[INDEX_NEXT:%.*]], [[LOOP_INC:%.*]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ] |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i64, ptr [[P1]], i64 [[INDEX]] |
| ; CHECK-NEXT: [[LD1:%.*]] = load i64, ptr [[ARRAYIDX]], align 1 |
| ; CHECK-NEXT: [[CMP3:%.*]] = icmp ult i64 [[INDEX]], [[LD1]] |
| ; CHECK-NEXT: br i1 [[CMP3]], label [[LOOP_INC]], label [[LOOP_END]] |
| ; CHECK: loop.inc: |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 1 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[INDEX_NEXT]], 67 |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[LOOP]], label [[LOOP_END]], !llvm.loop [[LOOP5:![0-9]+]] |
| ; CHECK: loop.end: |
| ; CHECK-NEXT: [[RETVAL:%.*]] = phi i64 [ [[INDEX]], [[LOOP]] ], [ 67, [[LOOP_INC]] ], [ 67, [[MIDDLE_BLOCK]] ], [ [[EARLY_EXIT_VALUE]], [[VECTOR_EARLY_EXIT]] ] |
| ; CHECK-NEXT: ret i64 [[RETVAL]] |
| ; |
| entry: |
| %p1 = alloca [1024 x i64] |
| %p2 = alloca [1024 x i64] |
| call void @init_mem(ptr %p1, i64 1024) |
| call void @init_mem(ptr %p2, i64 1024) |
| br label %loop |
| |
| loop: |
| %index = phi i64 [ %index.next, %loop.inc ], [ 3, %entry ] |
| %arrayidx = getelementptr inbounds i64, ptr %p1, i64 %index |
| %ld1 = load i64, ptr %arrayidx, align 1 |
| %cmp3 = icmp ult i64 %index, %ld1 |
| br i1 %cmp3, label %loop.inc, label %loop.end |
| |
| loop.inc: |
| %index.next = add i64 %index, 1 |
| %exitcond = icmp ne i64 %index.next, 67 |
| br i1 %exitcond, label %loop, label %loop.end |
| |
| loop.end: |
| %retval = phi i64 [ %index, %loop ], [ 67, %loop.inc ] |
| ret i64 %retval |
| } |
| |
| |
| define i64 @loop_contains_safe_call() #1 { |
| ; CHECK-LABEL: define i64 @loop_contains_safe_call( |
| ; CHECK-SAME: ) #[[ATTR0]] { |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[P1:%.*]] = alloca [1024 x i8], align 4 |
| ; CHECK-NEXT: [[P2:%.*]] = alloca [1024 x i8], align 4 |
| ; CHECK-NEXT: call void @init_mem(ptr [[P1]], i64 1024) |
| ; CHECK-NEXT: call void @init_mem(ptr [[P2]], i64 1024) |
| ; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX1:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT2:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[VEC_IND:%.*]] = phi <4 x i64> [ <i64 3, i64 4, i64 5, i64 6>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[OFFSET_IDX:%.*]] = add i64 3, [[INDEX1]] |
| ; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[OFFSET_IDX]], 0 |
| ; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds float, ptr [[P1]], i64 [[TMP0]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds float, ptr [[TMP1]], i32 0 |
| ; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x float>, ptr [[TMP2]], align 1 |
| ; CHECK-NEXT: [[TMP3:%.*]] = call fast <4 x float> @llvm.sqrt.v4f32(<4 x float> [[WIDE_LOAD]]) |
| ; CHECK-NEXT: [[TMP4:%.*]] = fcmp fast ult <4 x float> [[TMP3]], splat (float 3.000000e+00) |
| ; CHECK-NEXT: [[INDEX_NEXT2]] = add nuw i64 [[INDEX1]], 4 |
| ; CHECK-NEXT: [[TMP5:%.*]] = xor <4 x i1> [[TMP4]], splat (i1 true) |
| ; CHECK-NEXT: [[TMP6:%.*]] = call i1 @llvm.vector.reduce.or.v4i1(<4 x i1> [[TMP5]]) |
| ; CHECK-NEXT: [[TMP7:%.*]] = icmp eq i64 [[INDEX_NEXT2]], 64 |
| ; CHECK-NEXT: [[VEC_IND_NEXT]] = add <4 x i64> [[VEC_IND]], splat (i64 4) |
| ; CHECK-NEXT: [[TMP8:%.*]] = or i1 [[TMP6]], [[TMP7]] |
| ; CHECK-NEXT: br i1 [[TMP8]], label [[MIDDLE_SPLIT:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]] |
| ; CHECK: middle.split: |
| ; CHECK-NEXT: br i1 [[TMP6]], label [[VECTOR_EARLY_EXIT:%.*]], label [[MIDDLE_BLOCK:%.*]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: br i1 true, label [[LOOP_END:%.*]], label [[SCALAR_PH]] |
| ; CHECK: vector.early.exit: |
| ; CHECK-NEXT: [[FIRST_ACTIVE_LANE:%.*]] = call i64 @llvm.experimental.cttz.elts.i64.v4i1(<4 x i1> [[TMP5]], i1 true) |
| ; CHECK-NEXT: [[EARLY_EXIT_VALUE:%.*]] = extractelement <4 x i64> [[VEC_IND]], i64 [[FIRST_ACTIVE_LANE]] |
| ; CHECK-NEXT: br label [[LOOP_END]] |
| ; CHECK: scalar.ph: |
| ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 67, [[MIDDLE_BLOCK]] ], [ 3, [[ENTRY:%.*]] ] |
| ; CHECK-NEXT: br label [[LOOP:%.*]] |
| ; CHECK: loop: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ [[INDEX_NEXT:%.*]], [[LOOP_INC:%.*]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ] |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds float, ptr [[P1]], i64 [[INDEX]] |
| ; CHECK-NEXT: [[LD1:%.*]] = load float, ptr [[ARRAYIDX]], align 1 |
| ; CHECK-NEXT: [[SQRT:%.*]] = tail call fast float @llvm.sqrt.f32(float [[LD1]]) |
| ; CHECK-NEXT: [[CMP:%.*]] = fcmp fast ult float [[SQRT]], 3.000000e+00 |
| ; CHECK-NEXT: br i1 [[CMP]], label [[LOOP_INC]], label [[LOOP_END]] |
| ; CHECK: loop.inc: |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 1 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[INDEX_NEXT]], 67 |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[LOOP]], label [[LOOP_END]], !llvm.loop [[LOOP7:![0-9]+]] |
| ; CHECK: loop.end: |
| ; CHECK-NEXT: [[RETVAL:%.*]] = phi i64 [ [[INDEX]], [[LOOP]] ], [ 67, [[LOOP_INC]] ], [ 67, [[MIDDLE_BLOCK]] ], [ [[EARLY_EXIT_VALUE]], [[VECTOR_EARLY_EXIT]] ] |
| ; CHECK-NEXT: ret i64 [[RETVAL]] |
| ; |
| entry: |
| %p1 = alloca [1024 x i8] |
| %p2 = alloca [1024 x i8] |
| call void @init_mem(ptr %p1, i64 1024) |
| call void @init_mem(ptr %p2, i64 1024) |
| br label %loop |
| |
| loop: |
| %index = phi i64 [ %index.next, %loop.inc ], [ 3, %entry ] |
| %arrayidx = getelementptr inbounds float, ptr %p1, i64 %index |
| %ld1 = load float, ptr %arrayidx, align 1 |
| %sqrt = tail call fast float @llvm.sqrt.f32(float %ld1) |
| %cmp = fcmp fast ult float %sqrt, 3.0e+00 |
| br i1 %cmp, label %loop.inc, label %loop.end |
| |
| loop.inc: |
| %index.next = add i64 %index, 1 |
| %exitcond = icmp ne i64 %index.next, 67 |
| br i1 %exitcond, label %loop, label %loop.end |
| |
| loop.end: |
| %retval = phi i64 [ %index, %loop ], [ 67, %loop.inc ] |
| ret i64 %retval |
| } |
| |
| |
| define i64 @loop_contains_safe_div() #1 { |
| ; CHECK-LABEL: define i64 @loop_contains_safe_div( |
| ; CHECK-SAME: ) #[[ATTR0]] { |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[P1:%.*]] = alloca [1024 x i8], align 4 |
| ; CHECK-NEXT: [[P2:%.*]] = alloca [1024 x i8], align 4 |
| ; CHECK-NEXT: call void @init_mem(ptr [[P1]], i64 1024) |
| ; CHECK-NEXT: call void @init_mem(ptr [[P2]], i64 1024) |
| ; CHECK-NEXT: [[TMP11:%.*]] = call i64 @llvm.vscale.i64() |
| ; CHECK-NEXT: [[TMP12:%.*]] = mul i64 [[TMP11]], 4 |
| ; CHECK-NEXT: [[TMP18:%.*]] = call i64 @llvm.umax.i64(i64 8, i64 [[TMP12]]) |
| ; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: [[TMP10:%.*]] = call i64 @llvm.vscale.i64() |
| ; CHECK-NEXT: [[TMP3:%.*]] = mul i64 [[TMP10]], 4 |
| ; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 64, [[TMP3]] |
| ; CHECK-NEXT: [[INDEX1:%.*]] = sub i64 64, [[N_MOD_VF]] |
| ; CHECK-NEXT: [[TMP4:%.*]] = call i64 @llvm.vscale.i64() |
| ; CHECK-NEXT: [[TMP5:%.*]] = mul i64 [[TMP4]], 4 |
| ; CHECK-NEXT: [[OFFSET_IDX:%.*]] = add i64 3, [[INDEX1]] |
| ; CHECK-NEXT: [[TMP16:%.*]] = call <vscale x 4 x i64> @llvm.stepvector.nxv4i64() |
| ; CHECK-NEXT: [[TMP17:%.*]] = mul <vscale x 4 x i64> [[TMP16]], splat (i64 1) |
| ; CHECK-NEXT: [[INDUCTION:%.*]] = add <vscale x 4 x i64> splat (i64 3), [[TMP17]] |
| ; CHECK-NEXT: [[TMP9:%.*]] = mul i64 1, [[TMP5]] |
| ; CHECK-NEXT: [[DOTSPLATINSERT:%.*]] = insertelement <vscale x 4 x i64> poison, i64 [[TMP9]], i64 0 |
| ; CHECK-NEXT: [[DOTSPLAT:%.*]] = shufflevector <vscale x 4 x i64> [[DOTSPLATINSERT]], <vscale x 4 x i64> poison, <vscale x 4 x i32> zeroinitializer |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX2:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT2:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[VEC_IND:%.*]] = phi <vscale x 4 x i64> [ [[INDUCTION]], [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[OFFSET_IDX1:%.*]] = add i64 3, [[INDEX2]] |
| ; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[OFFSET_IDX1]], 0 |
| ; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i32, ptr [[P1]], i64 [[TMP0]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i32, ptr [[TMP1]], i32 0 |
| ; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <vscale x 4 x i32>, ptr [[TMP2]], align 1 |
| ; CHECK-NEXT: [[TMP13:%.*]] = udiv <vscale x 4 x i32> [[WIDE_LOAD]], splat (i32 20000) |
| ; CHECK-NEXT: [[TMP14:%.*]] = icmp eq <vscale x 4 x i32> [[TMP13]], splat (i32 1) |
| ; CHECK-NEXT: [[INDEX_NEXT2]] = add nuw i64 [[INDEX2]], [[TMP5]] |
| ; CHECK-NEXT: [[TMP15:%.*]] = xor <vscale x 4 x i1> [[TMP14]], splat (i1 true) |
| ; CHECK-NEXT: [[TMP6:%.*]] = call i1 @llvm.vector.reduce.or.nxv4i1(<vscale x 4 x i1> [[TMP15]]) |
| ; CHECK-NEXT: [[TMP7:%.*]] = icmp eq i64 [[INDEX_NEXT2]], [[INDEX1]] |
| ; CHECK-NEXT: [[VEC_IND_NEXT]] = add <vscale x 4 x i64> [[VEC_IND]], [[DOTSPLAT]] |
| ; CHECK-NEXT: [[TMP8:%.*]] = or i1 [[TMP6]], [[TMP7]] |
| ; CHECK-NEXT: br i1 [[TMP8]], label [[MIDDLE_SPLIT:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP8:![0-9]+]] |
| ; CHECK: middle.split: |
| ; CHECK-NEXT: br i1 [[TMP6]], label [[VECTOR_EARLY_EXIT:%.*]], label [[MIDDLE_BLOCK:%.*]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 64, [[INDEX1]] |
| ; CHECK-NEXT: br i1 [[CMP_N]], label [[LOOP_END:%.*]], label [[SCALAR_PH]] |
| ; CHECK: vector.early.exit: |
| ; CHECK-NEXT: [[FIRST_ACTIVE_LANE:%.*]] = call i64 @llvm.experimental.cttz.elts.i64.nxv4i1(<vscale x 4 x i1> [[TMP15]], i1 true) |
| ; CHECK-NEXT: [[EARLY_EXIT_VALUE:%.*]] = extractelement <vscale x 4 x i64> [[VEC_IND]], i64 [[FIRST_ACTIVE_LANE]] |
| ; CHECK-NEXT: br label [[LOOP_END]] |
| ; CHECK: scalar.ph: |
| ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[OFFSET_IDX]], [[MIDDLE_BLOCK]] ], [ 3, [[ENTRY:%.*]] ] |
| ; CHECK-NEXT: br label [[LOOP:%.*]] |
| ; CHECK: loop: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ [[INDEX_NEXT:%.*]], [[LOOP_INC:%.*]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ] |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[P1]], i64 [[INDEX]] |
| ; CHECK-NEXT: [[LD1:%.*]] = load i32, ptr [[ARRAYIDX]], align 1 |
| ; CHECK-NEXT: [[DIV:%.*]] = udiv i32 [[LD1]], 20000 |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[DIV]], 1 |
| ; CHECK-NEXT: br i1 [[CMP]], label [[LOOP_INC]], label [[LOOP_END]] |
| ; CHECK: loop.inc: |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 1 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[INDEX_NEXT]], 67 |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[LOOP]], label [[LOOP_END]], !llvm.loop [[LOOP9:![0-9]+]] |
| ; CHECK: loop.end: |
| ; CHECK-NEXT: [[RETVAL:%.*]] = phi i64 [ [[INDEX]], [[LOOP]] ], [ 67, [[LOOP_INC]] ], [ 67, [[MIDDLE_BLOCK]] ], [ [[EARLY_EXIT_VALUE]], [[VECTOR_EARLY_EXIT]] ] |
| ; CHECK-NEXT: ret i64 [[RETVAL]] |
| ; |
| entry: |
| %p1 = alloca [1024 x i8] |
| %p2 = alloca [1024 x i8] |
| call void @init_mem(ptr %p1, i64 1024) |
| call void @init_mem(ptr %p2, i64 1024) |
| br label %loop |
| |
| loop: |
| %index = phi i64 [ %index.next, %loop.inc ], [ 3, %entry ] |
| %arrayidx = getelementptr inbounds i32, ptr %p1, i64 %index |
| %ld1 = load i32, ptr %arrayidx, align 1 |
| %div = udiv i32 %ld1, 20000 |
| %cmp = icmp eq i32 %div, 1 |
| br i1 %cmp, label %loop.inc, label %loop.end |
| |
| loop.inc: |
| %index.next = add i64 %index, 1 |
| %exitcond = icmp ne i64 %index.next, 67 |
| br i1 %exitcond, label %loop, label %loop.end |
| |
| loop.end: |
| %retval = phi i64 [ %index, %loop ], [ 67, %loop.inc ] |
| ret i64 %retval |
| } |
| |
| |
| define i64 @loop_contains_load_after_early_exit(ptr dereferenceable(1024) align(8) %p2) { |
| ; DEBUG-LABEL: LV: Checking a loop in 'loop_contains_load_after_early_exit' |
| ; DEBUG: LV: Found an early exit loop with symbolic max backedge taken count: 63 |
| ; DEBUG-NEXT: LV: We can vectorize this loop! |
| ; DEBUG-NEXT: LV: Not vectorizing: Auto-vectorization of loops with uncountable early exit is not yet supported. |
| ; CHECK-LABEL: define i64 @loop_contains_load_after_early_exit( |
| ; CHECK-SAME: ptr align 8 dereferenceable(1024) [[P2:%.*]]) { |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[P1:%.*]] = alloca [1024 x i8], align 4 |
| ; CHECK-NEXT: call void @init_mem(ptr [[P1]], i64 1024) |
| ; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX1:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT3:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[VEC_IND:%.*]] = phi <4 x i64> [ <i64 3, i64 4, i64 5, i64 6>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[OFFSET_IDX:%.*]] = add i64 3, [[INDEX1]] |
| ; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[OFFSET_IDX]], 0 |
| ; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i32, ptr [[P1]], i64 [[TMP0]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i32, ptr [[TMP1]], i32 0 |
| ; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x i32>, ptr [[TMP2]], align 1 |
| ; CHECK-NEXT: [[TMP3:%.*]] = icmp eq <4 x i32> [[WIDE_LOAD]], splat (i32 1) |
| ; CHECK-NEXT: [[TMP4:%.*]] = getelementptr i64, ptr [[P2]], i64 [[TMP0]] |
| ; CHECK-NEXT: [[TMP5:%.*]] = getelementptr i64, ptr [[TMP4]], i32 0 |
| ; CHECK-NEXT: [[WIDE_LOAD2:%.*]] = load <4 x i64>, ptr [[TMP5]], align 8 |
| ; CHECK-NEXT: [[INDEX_NEXT3]] = add nuw i64 [[INDEX1]], 4 |
| ; CHECK-NEXT: [[TMP6:%.*]] = xor <4 x i1> [[TMP3]], splat (i1 true) |
| ; CHECK-NEXT: [[TMP7:%.*]] = call i1 @llvm.vector.reduce.or.v4i1(<4 x i1> [[TMP6]]) |
| ; CHECK-NEXT: [[TMP8:%.*]] = icmp eq i64 [[INDEX_NEXT3]], 64 |
| ; CHECK-NEXT: [[VEC_IND_NEXT]] = add <4 x i64> [[VEC_IND]], splat (i64 4) |
| ; CHECK-NEXT: [[TMP9:%.*]] = or i1 [[TMP7]], [[TMP8]] |
| ; CHECK-NEXT: br i1 [[TMP9]], label [[MIDDLE_SPLIT:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP10:![0-9]+]] |
| ; CHECK: middle.split: |
| ; CHECK-NEXT: [[TMP10:%.*]] = extractelement <4 x i64> [[WIDE_LOAD2]], i32 3 |
| ; CHECK-NEXT: br i1 [[TMP7]], label [[VECTOR_EARLY_EXIT:%.*]], label [[MIDDLE_BLOCK:%.*]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: br i1 true, label [[LOOP_END:%.*]], label [[SCALAR_PH]] |
| ; CHECK: vector.early.exit: |
| ; CHECK-NEXT: [[FIRST_ACTIVE_LANE:%.*]] = call i64 @llvm.experimental.cttz.elts.i64.v4i1(<4 x i1> [[TMP6]], i1 true) |
| ; CHECK-NEXT: [[EARLY_EXIT_VALUE:%.*]] = extractelement <4 x i64> [[VEC_IND]], i64 [[FIRST_ACTIVE_LANE]] |
| ; CHECK-NEXT: br label [[LOOP_END]] |
| ; CHECK: scalar.ph: |
| ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 67, [[MIDDLE_BLOCK]] ], [ 3, [[ENTRY:%.*]] ] |
| ; CHECK-NEXT: br label [[LOOP:%.*]] |
| ; CHECK: loop: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ [[INDEX_NEXT:%.*]], [[LOOP_INC:%.*]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ] |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[P1]], i64 [[INDEX]] |
| ; CHECK-NEXT: [[LD1:%.*]] = load i32, ptr [[ARRAYIDX]], align 1 |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[LD1]], 1 |
| ; CHECK-NEXT: br i1 [[CMP]], label [[LOOP_INC]], label [[LOOP_END]] |
| ; CHECK: loop.inc: |
| ; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds i64, ptr [[P2]], i64 [[INDEX]] |
| ; CHECK-NEXT: [[LD2:%.*]] = load i64, ptr [[ARRAYIDX2]], align 8 |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 1 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[INDEX_NEXT]], 67 |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[LOOP]], label [[LOOP_END]], !llvm.loop [[LOOP11:![0-9]+]] |
| ; CHECK: loop.end: |
| ; CHECK-NEXT: [[RETVAL:%.*]] = phi i64 [ [[INDEX]], [[LOOP]] ], [ [[LD2]], [[LOOP_INC]] ], [ [[TMP10]], [[MIDDLE_BLOCK]] ], [ [[EARLY_EXIT_VALUE]], [[VECTOR_EARLY_EXIT]] ] |
| ; CHECK-NEXT: ret i64 [[RETVAL]] |
| ; |
| entry: |
| %p1 = alloca [1024 x i8] |
| call void @init_mem(ptr %p1, i64 1024) |
| br label %loop |
| |
| loop: |
| %index = phi i64 [ %index.next, %loop.inc ], [ 3, %entry ] |
| %arrayidx = getelementptr inbounds i32, ptr %p1, i64 %index |
| %ld1 = load i32, ptr %arrayidx, align 1 |
| %cmp = icmp eq i32 %ld1, 1 |
| br i1 %cmp, label %loop.inc, label %loop.end |
| |
| loop.inc: |
| %arrayidx2 = getelementptr inbounds i64, ptr %p2, i64 %index |
| %ld2 = load i64, ptr %arrayidx2, align 8 |
| %index.next = add i64 %index, 1 |
| %exitcond = icmp ne i64 %index.next, 67 |
| br i1 %exitcond, label %loop, label %loop.end |
| |
| loop.end: |
| %retval = phi i64 [ %index, %loop ], [ %ld2, %loop.inc ] |
| ret i64 %retval |
| } |
| |
| |
| ; The form of the induction variables requires SCEV predicates. |
| define i32 @diff_exit_block_needs_scev_check(i32 %end) { |
| ; DEBUG-LABEL: LV: Checking a loop in 'diff_exit_block_needs_scev_check' |
| ; DEBUG: Found an early exit loop with symbolic max backedge taken count: (-1 + (1 umax (zext i10 (trunc i32 %end to i10) to i32)))<nsw> |
| ; DEBUG-NEXT: LV: We can vectorize this loop! |
| ; DEBUG-NEXT: LV: Not vectorizing: Auto-vectorization of loops with uncountable early exit is not yet supported. |
| ; CHECK-LABEL: define i32 @diff_exit_block_needs_scev_check( |
| ; CHECK-SAME: i32 [[END:%.*]]) { |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[P1:%.*]] = alloca [1024 x i32], align 4 |
| ; CHECK-NEXT: [[P2:%.*]] = alloca [1024 x i32], align 4 |
| ; CHECK-NEXT: call void @init_mem(ptr [[P1]], i64 1024) |
| ; CHECK-NEXT: call void @init_mem(ptr [[P2]], i64 1024) |
| ; CHECK-NEXT: [[END_CLAMPED:%.*]] = and i32 [[END]], 1023 |
| ; CHECK-NEXT: [[TMP0:%.*]] = trunc i32 [[END]] to i10 |
| ; CHECK-NEXT: [[TMP1:%.*]] = zext i10 [[TMP0]] to i64 |
| ; CHECK-NEXT: [[UMAX1:%.*]] = call i64 @llvm.umax.i64(i64 [[TMP1]], i64 1) |
| ; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[UMAX1]], 12 |
| ; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_SCEVCHECK:%.*]] |
| ; CHECK: vector.scevcheck: |
| ; CHECK-NEXT: [[UMAX:%.*]] = call i32 @llvm.umax.i32(i32 [[END_CLAMPED]], i32 1) |
| ; CHECK-NEXT: [[TMP2:%.*]] = add nsw i32 [[UMAX]], -1 |
| ; CHECK-NEXT: [[TMP3:%.*]] = trunc i32 [[TMP2]] to i8 |
| ; CHECK-NEXT: [[TMP4:%.*]] = add i8 1, [[TMP3]] |
| ; CHECK-NEXT: [[TMP5:%.*]] = icmp ult i8 [[TMP4]], 1 |
| ; CHECK-NEXT: [[TMP6:%.*]] = icmp ugt i32 [[TMP2]], 255 |
| ; CHECK-NEXT: [[TMP7:%.*]] = or i1 [[TMP5]], [[TMP6]] |
| ; CHECK-NEXT: br i1 [[TMP7]], label [[SCALAR_PH]], label [[VECTOR_PH:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[UMAX1]], 4 |
| ; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[UMAX1]], [[N_MOD_VF]] |
| ; CHECK-NEXT: [[TMP8:%.*]] = trunc i64 [[N_VEC]] to i8 |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[TMP9:%.*]] = add i64 [[INDEX]], 0 |
| ; CHECK-NEXT: [[TMP10:%.*]] = getelementptr inbounds i32, ptr [[P1]], i64 [[TMP9]] |
| ; CHECK-NEXT: [[TMP11:%.*]] = getelementptr inbounds i32, ptr [[TMP10]], i32 0 |
| ; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x i32>, ptr [[TMP11]], align 4 |
| ; CHECK-NEXT: [[TMP12:%.*]] = getelementptr inbounds i32, ptr [[P2]], i64 [[TMP9]] |
| ; CHECK-NEXT: [[TMP13:%.*]] = getelementptr inbounds i32, ptr [[TMP12]], i32 0 |
| ; CHECK-NEXT: [[WIDE_LOAD2:%.*]] = load <4 x i32>, ptr [[TMP13]], align 4 |
| ; CHECK-NEXT: [[TMP14:%.*]] = icmp eq <4 x i32> [[WIDE_LOAD]], [[WIDE_LOAD2]] |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4 |
| ; CHECK-NEXT: [[TMP15:%.*]] = call i1 @llvm.vector.reduce.or.v4i1(<4 x i1> [[TMP14]]) |
| ; CHECK-NEXT: [[TMP16:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]] |
| ; CHECK-NEXT: [[TMP17:%.*]] = or i1 [[TMP15]], [[TMP16]] |
| ; CHECK-NEXT: br i1 [[TMP17]], label [[MIDDLE_SPLIT:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP12:![0-9]+]] |
| ; CHECK: middle.split: |
| ; CHECK-NEXT: br i1 [[TMP15]], label [[VECTOR_EARLY_EXIT:%.*]], label [[MIDDLE_BLOCK:%.*]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[UMAX1]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]] |
| ; CHECK: vector.early.exit: |
| ; CHECK-NEXT: br label [[FOUND:%.*]] |
| ; CHECK: scalar.ph: |
| ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i8 [ [[TMP8]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ], [ 0, [[VECTOR_SCEVCHECK]] ] |
| ; CHECK-NEXT: [[BC_RESUME_VAL3:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY]] ], [ 0, [[VECTOR_SCEVCHECK]] ] |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[IND:%.*]] = phi i8 [ [[IND_NEXT:%.*]], [[FOR_INC:%.*]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ] |
| ; CHECK-NEXT: [[GEP_IND:%.*]] = phi i64 [ [[GEP_IND_NEXT:%.*]], [[FOR_INC]] ], [ [[BC_RESUME_VAL3]], [[SCALAR_PH]] ] |
| ; CHECK-NEXT: [[ARRAYIDX1:%.*]] = getelementptr inbounds i32, ptr [[P1]], i64 [[GEP_IND]] |
| ; CHECK-NEXT: [[TMP18:%.*]] = load i32, ptr [[ARRAYIDX1]], align 4 |
| ; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, ptr [[P2]], i64 [[GEP_IND]] |
| ; CHECK-NEXT: [[TMP19:%.*]] = load i32, ptr [[ARRAYIDX2]], align 4 |
| ; CHECK-NEXT: [[CMP_EARLY:%.*]] = icmp eq i32 [[TMP18]], [[TMP19]] |
| ; CHECK-NEXT: br i1 [[CMP_EARLY]], label [[FOUND]], label [[FOR_INC]] |
| ; CHECK: for.inc: |
| ; CHECK-NEXT: [[IND_NEXT]] = add i8 [[IND]], 1 |
| ; CHECK-NEXT: [[CONV:%.*]] = zext i8 [[IND_NEXT]] to i32 |
| ; CHECK-NEXT: [[GEP_IND_NEXT]] = add i64 [[GEP_IND]], 1 |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[CONV]], [[END_CLAMPED]] |
| ; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[EXIT]], !llvm.loop [[LOOP13:![0-9]+]] |
| ; CHECK: found: |
| ; CHECK-NEXT: ret i32 1 |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret i32 0 |
| ; |
| entry: |
| %p1 = alloca [1024 x i32] |
| %p2 = alloca [1024 x i32] |
| call void @init_mem(ptr %p1, i64 1024) |
| call void @init_mem(ptr %p2, i64 1024) |
| %end.clamped = and i32 %end, 1023 |
| br label %for.body |
| |
| for.body: |
| %ind = phi i8 [ %ind.next, %for.inc ], [ 0, %entry ] |
| %gep.ind = phi i64 [ %gep.ind.next, %for.inc ], [ 0, %entry ] |
| %arrayidx1 = getelementptr inbounds i32, ptr %p1, i64 %gep.ind |
| %0 = load i32, ptr %arrayidx1, align 4 |
| %arrayidx2 = getelementptr inbounds i32, ptr %p2, i64 %gep.ind |
| %1 = load i32, ptr %arrayidx2, align 4 |
| %cmp.early = icmp eq i32 %0, %1 |
| br i1 %cmp.early, label %found, label %for.inc |
| |
| for.inc: |
| %ind.next = add i8 %ind, 1 |
| %conv = zext i8 %ind.next to i32 |
| %gep.ind.next = add i64 %gep.ind, 1 |
| %cmp = icmp ult i32 %conv, %end.clamped |
| br i1 %cmp, label %for.body, label %exit |
| |
| found: |
| ret i32 1 |
| |
| exit: |
| ret i32 0 |
| } |
| |
| %my.struct = type { i8, i8 } |
| |
| define i64 @same_exit_block_requires_interleaving() { |
| ; CHECK-LABEL: define i64 @same_exit_block_requires_interleaving() { |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[P1:%.*]] = alloca [128 x %my.struct], align 8 |
| ; CHECK-NEXT: call void @init_mem(ptr [[P1]], i64 256) |
| ; CHECK-NEXT: br label [[LOOP:%.*]] |
| ; CHECK: loop: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ [[INDEX_NEXT:%.*]], [[LOOP_LATCH:%.*]] ], [ 3, [[ENTRY:%.*]] ] |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [128 x %my.struct], ptr [[P1]], i64 0, i64 [[INDEX]] |
| ; CHECK-NEXT: [[LD1:%.*]] = load i8, ptr [[ARRAYIDX]], align 1 |
| ; CHECK-NEXT: [[CMP3:%.*]] = icmp eq i8 [[LD1]], 3 |
| ; CHECK-NEXT: br i1 [[CMP3]], label [[LOOP_LATCH]], label [[LOOP_END:%.*]] |
| ; CHECK: loop.latch: |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 1 |
| ; CHECK-NEXT: [[EXITCOND:%.*]] = icmp ne i64 [[INDEX_NEXT]], 69 |
| ; CHECK-NEXT: br i1 [[EXITCOND]], label [[LOOP]], label [[LOOP_END]] |
| ; CHECK: loop.end: |
| ; CHECK-NEXT: [[RETVAL:%.*]] = phi i64 [ 0, [[LOOP_LATCH]] ], [ 1, [[LOOP]] ] |
| ; CHECK-NEXT: ret i64 [[RETVAL]] |
| ; |
| entry: |
| %p1 = alloca [128 x %my.struct] |
| call void @init_mem(ptr %p1, i64 256) |
| br label %loop |
| |
| loop: |
| %index = phi i64 [ %index.next, %loop.latch ], [ 3, %entry ] |
| %arrayidx = getelementptr inbounds [128 x %my.struct], ptr %p1, i64 0, i64 %index |
| %ld1 = load i8, ptr %arrayidx, align 1 |
| %cmp3 = icmp eq i8 %ld1, 3 |
| br i1 %cmp3, label %loop.latch, label %loop.end |
| |
| loop.latch: |
| %index.next = add i64 %index, 1 |
| %exitcond = icmp ne i64 %index.next, 69 |
| br i1 %exitcond, label %loop, label %loop.end |
| |
| loop.end: |
| %retval = phi i64 [ 0, %loop.latch ], [ 1, %loop ] |
| ret i64 %retval |
| } |
| |
| declare i32 @foo(i32) readonly |
| declare <vscale x 4 x i32> @foo_vec(<vscale x 4 x i32>) |
| |
| attributes #0 = { "vector-function-abi-variant"="_ZGVsNxv_foo(foo_vec)" } |
| attributes #1 = { "target-features"="+sve" vscale_range(1,16) } |
| ;. |
| ; CHECK: [[LOOP0]] = distinct !{[[LOOP0]], [[META1:![0-9]+]], [[META2:![0-9]+]]} |
| ; CHECK: [[META1]] = !{!"llvm.loop.isvectorized", i32 1} |
| ; CHECK: [[META2]] = !{!"llvm.loop.unroll.runtime.disable"} |
| ; CHECK: [[LOOP3]] = distinct !{[[LOOP3]], [[META2]], [[META1]]} |
| ; CHECK: [[LOOP4]] = distinct !{[[LOOP4]], [[META1]], [[META2]]} |
| ; CHECK: [[LOOP5]] = distinct !{[[LOOP5]], [[META2]], [[META1]]} |
| ; CHECK: [[LOOP6]] = distinct !{[[LOOP6]], [[META1]], [[META2]]} |
| ; CHECK: [[LOOP7]] = distinct !{[[LOOP7]], [[META2]], [[META1]]} |
| ; CHECK: [[LOOP8]] = distinct !{[[LOOP8]], [[META1]], [[META2]]} |
| ; CHECK: [[LOOP9]] = distinct !{[[LOOP9]], [[META2]], [[META1]]} |
| ; CHECK: [[LOOP10]] = distinct !{[[LOOP10]], [[META1]], [[META2]]} |
| ; CHECK: [[LOOP11]] = distinct !{[[LOOP11]], [[META2]], [[META1]]} |
| ; CHECK: [[LOOP12]] = distinct !{[[LOOP12]], [[META1]], [[META2]]} |
| ; CHECK: [[LOOP13]] = distinct !{[[LOOP13]], [[META1]]} |
| ;. |
