| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -passes=loop-vectorize -force-vector-width=4 -hoist-runtime-checks=false -S < %s | FileCheck %s --check-prefix=CHECK |
| ; RUN: opt -passes=loop-vectorize -force-vector-width=4 -S < %s | FileCheck %s --check-prefix=CHECK-HOIST |
| |
| ; This is the test case from PR26314. |
| ; When we were retrying dependence checking with memchecks only, |
| ; the loop-invariant access in the inner loop was incorrectly determined to be wrapping |
| ; because it was not strided in the inner loop. |
| ; Improved wrapping detection allows vectorization in the following case. |
| |
| ; #define Z 32 |
| ; typedef struct s { |
| ; int v1[Z]; |
| ; int v2[Z]; |
| ; int v3[Z][Z]; |
| ; } s; |
| ; |
| ; void slow_function (s* const obj, int z) { |
| ; for (int j=0; j<Z; j++) { |
| ; for (int k=0; k<z; k++) { |
| ; int x = obj->v1[k] + obj->v2[j]; |
| ; obj->v3[j][k] += x; |
| ; } |
| ; } |
| ; } |
| |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| |
| %struct.s = type { [32 x i32], [32 x i32], [32 x [32 x i32]] } |
| |
| define void @Test(ptr nocapture %obj, i64 %z) #0 { |
| ; CHECK-LABEL: @Test( |
| ; CHECK-NEXT: [[TMP1:%.*]] = shl i64 [[Z:%.*]], 2 |
| ; CHECK-NEXT: [[TMP2:%.*]] = add i64 [[TMP1]], 256 |
| ; CHECK-NEXT: [[SCEVGEP2:%.*]] = getelementptr i8, ptr [[OBJ:%.*]], i64 [[TMP1]] |
| ; CHECK-NEXT: br label [[DOTOUTER_PREHEADER:%.*]] |
| ; CHECK: .outer.preheader: |
| ; CHECK-NEXT: [[I:%.*]] = phi i64 [ 0, [[TMP0:%.*]] ], [ [[I_NEXT:%.*]], [[DOTOUTER:%.*]] ] |
| ; CHECK-NEXT: [[TMP3:%.*]] = shl nuw nsw i64 [[I]], 7 |
| ; CHECK-NEXT: [[TMP4:%.*]] = add i64 [[TMP3]], 256 |
| ; CHECK-NEXT: [[SCEVGEP:%.*]] = getelementptr nuw i8, ptr [[OBJ]], i64 [[TMP4]] |
| ; CHECK-NEXT: [[TMP5:%.*]] = add i64 [[TMP2]], [[TMP3]] |
| ; CHECK-NEXT: [[SCEVGEP1:%.*]] = getelementptr i8, ptr [[OBJ]], i64 [[TMP5]] |
| ; CHECK-NEXT: [[TMP6:%.*]] = shl nuw nsw i64 [[I]], 2 |
| ; CHECK-NEXT: [[TMP7:%.*]] = add i64 [[TMP6]], 128 |
| ; CHECK-NEXT: [[SCEVGEP3:%.*]] = getelementptr nuw i8, ptr [[OBJ]], i64 [[TMP7]] |
| ; CHECK-NEXT: [[TMP8:%.*]] = add i64 [[TMP6]], 132 |
| ; CHECK-NEXT: [[SCEVGEP4:%.*]] = getelementptr i8, ptr [[OBJ]], i64 [[TMP8]] |
| ; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds [[STRUCT_S:%.*]], ptr [[OBJ]], i64 0, i32 1, i64 [[I]] |
| ; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[Z]], 4 |
| ; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_MEMCHECK:%.*]] |
| ; CHECK: vector.memcheck: |
| ; CHECK-NEXT: [[BOUND0:%.*]] = icmp ult ptr [[SCEVGEP]], [[SCEVGEP2]] |
| ; CHECK-NEXT: [[BOUND1:%.*]] = icmp ult ptr [[OBJ]], [[SCEVGEP1]] |
| ; CHECK-NEXT: [[FOUND_CONFLICT:%.*]] = and i1 [[BOUND0]], [[BOUND1]] |
| ; CHECK-NEXT: [[BOUND05:%.*]] = icmp ult ptr [[SCEVGEP]], [[SCEVGEP4]] |
| ; CHECK-NEXT: [[BOUND16:%.*]] = icmp ult ptr [[SCEVGEP3]], [[SCEVGEP1]] |
| ; CHECK-NEXT: [[FOUND_CONFLICT7:%.*]] = and i1 [[BOUND05]], [[BOUND16]] |
| ; CHECK-NEXT: [[CONFLICT_RDX:%.*]] = or i1 [[FOUND_CONFLICT]], [[FOUND_CONFLICT7]] |
| ; CHECK-NEXT: br i1 [[CONFLICT_RDX]], label [[SCALAR_PH]], label [[VECTOR_PH:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[Z]], 4 |
| ; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[Z]], [[N_MOD_VF]] |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[TMP10:%.*]] = add i64 [[INDEX]], 0 |
| ; CHECK-NEXT: [[TMP11:%.*]] = getelementptr inbounds [[STRUCT_S]], ptr [[OBJ]], i64 0, i32 0, i64 [[TMP10]] |
| ; CHECK-NEXT: [[TMP12:%.*]] = getelementptr inbounds i32, ptr [[TMP11]], i32 0 |
| ; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x i32>, ptr [[TMP12]], align 4, !alias.scope [[META0:![0-9]+]] |
| ; CHECK-NEXT: [[TMP13:%.*]] = load i32, ptr [[TMP9]], align 4, !alias.scope [[META3:![0-9]+]] |
| ; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <4 x i32> poison, i32 [[TMP13]], i64 0 |
| ; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <4 x i32> [[BROADCAST_SPLATINSERT]], <4 x i32> poison, <4 x i32> zeroinitializer |
| ; CHECK-NEXT: [[TMP14:%.*]] = add nsw <4 x i32> [[BROADCAST_SPLAT]], [[WIDE_LOAD]] |
| ; CHECK-NEXT: [[TMP15:%.*]] = getelementptr inbounds [[STRUCT_S]], ptr [[OBJ]], i64 0, i32 2, i64 [[I]], i64 [[TMP10]] |
| ; CHECK-NEXT: [[TMP16:%.*]] = getelementptr inbounds i32, ptr [[TMP15]], i32 0 |
| ; CHECK-NEXT: [[WIDE_LOAD8:%.*]] = load <4 x i32>, ptr [[TMP16]], align 4, !alias.scope [[META5:![0-9]+]], !noalias [[META7:![0-9]+]] |
| ; CHECK-NEXT: [[TMP17:%.*]] = add nsw <4 x i32> [[TMP14]], [[WIDE_LOAD8]] |
| ; CHECK-NEXT: store <4 x i32> [[TMP17]], ptr [[TMP16]], align 4, !alias.scope [[META5]], !noalias [[META7]] |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4 |
| ; CHECK-NEXT: [[TMP18:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[TMP18]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP8:![0-9]+]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[Z]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[CMP_N]], label [[DOTOUTER]], label [[SCALAR_PH]] |
| ; CHECK: scalar.ph: |
| ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[VECTOR_MEMCHECK]] ], [ 0, [[DOTOUTER_PREHEADER]] ] |
| ; CHECK-NEXT: br label [[DOTINNER:%.*]] |
| ; CHECK: .exit: |
| ; CHECK-NEXT: ret void |
| ; CHECK: .outer: |
| ; CHECK-NEXT: [[I_NEXT]] = add nuw nsw i64 [[I]], 1 |
| ; CHECK-NEXT: [[EXITCOND_OUTER:%.*]] = icmp eq i64 [[I_NEXT]], 32 |
| ; CHECK-NEXT: br i1 [[EXITCOND_OUTER]], label [[DOTEXIT:%.*]], label [[DOTOUTER_PREHEADER]] |
| ; CHECK: .inner: |
| ; CHECK-NEXT: [[J:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[J_NEXT:%.*]], [[DOTINNER]] ] |
| ; CHECK-NEXT: [[TMP19:%.*]] = getelementptr inbounds [[STRUCT_S]], ptr [[OBJ]], i64 0, i32 0, i64 [[J]] |
| ; CHECK-NEXT: [[TMP20:%.*]] = load i32, ptr [[TMP19]], align 4 |
| ; CHECK-NEXT: [[TMP21:%.*]] = load i32, ptr [[TMP9]], align 4 |
| ; CHECK-NEXT: [[TMP22:%.*]] = add nsw i32 [[TMP21]], [[TMP20]] |
| ; CHECK-NEXT: [[TMP23:%.*]] = getelementptr inbounds [[STRUCT_S]], ptr [[OBJ]], i64 0, i32 2, i64 [[I]], i64 [[J]] |
| ; CHECK-NEXT: [[TMP24:%.*]] = load i32, ptr [[TMP23]], align 4 |
| ; CHECK-NEXT: [[TMP25:%.*]] = add nsw i32 [[TMP22]], [[TMP24]] |
| ; CHECK-NEXT: store i32 [[TMP25]], ptr [[TMP23]], align 4 |
| ; CHECK-NEXT: [[J_NEXT]] = add nuw nsw i64 [[J]], 1 |
| ; CHECK-NEXT: [[EXITCOND_INNER:%.*]] = icmp eq i64 [[J_NEXT]], [[Z]] |
| ; CHECK-NEXT: br i1 [[EXITCOND_INNER]], label [[DOTOUTER]], label [[DOTINNER]], !llvm.loop [[LOOP11:![0-9]+]] |
| ; |
| ; CHECK-HOIST-LABEL: @Test( |
| ; CHECK-HOIST-NEXT: [[SCEVGEP:%.*]] = getelementptr nuw i8, ptr [[OBJ:%.*]], i64 256 |
| ; CHECK-HOIST-NEXT: [[TMP1:%.*]] = shl i64 [[Z:%.*]], 2 |
| ; CHECK-HOIST-NEXT: [[TMP2:%.*]] = add i64 [[TMP1]], 4224 |
| ; CHECK-HOIST-NEXT: [[SCEVGEP1:%.*]] = getelementptr i8, ptr [[OBJ]], i64 [[TMP2]] |
| ; CHECK-HOIST-NEXT: [[SCEVGEP2:%.*]] = getelementptr i8, ptr [[OBJ]], i64 [[TMP1]] |
| ; CHECK-HOIST-NEXT: [[SCEVGEP3:%.*]] = getelementptr nuw i8, ptr [[OBJ]], i64 128 |
| ; CHECK-HOIST-NEXT: br label [[DOTOUTER_PREHEADER:%.*]] |
| ; CHECK-HOIST: .outer.preheader: |
| ; CHECK-HOIST-NEXT: [[I:%.*]] = phi i64 [ 0, [[TMP0:%.*]] ], [ [[I_NEXT:%.*]], [[DOTOUTER:%.*]] ] |
| ; CHECK-HOIST-NEXT: [[TMP3:%.*]] = getelementptr inbounds [[STRUCT_S:%.*]], ptr [[OBJ]], i64 0, i32 1, i64 [[I]] |
| ; CHECK-HOIST-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[Z]], 4 |
| ; CHECK-HOIST-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_MEMCHECK:%.*]] |
| ; CHECK-HOIST: vector.memcheck: |
| ; CHECK-HOIST-NEXT: [[BOUND0:%.*]] = icmp ult ptr [[SCEVGEP]], [[SCEVGEP2]] |
| ; CHECK-HOIST-NEXT: [[BOUND1:%.*]] = icmp ult ptr [[OBJ]], [[SCEVGEP1]] |
| ; CHECK-HOIST-NEXT: [[FOUND_CONFLICT:%.*]] = and i1 [[BOUND0]], [[BOUND1]] |
| ; CHECK-HOIST-NEXT: [[BOUND14:%.*]] = icmp ult ptr [[SCEVGEP3]], [[SCEVGEP1]] |
| ; CHECK-HOIST-NEXT: br i1 [[FOUND_CONFLICT]], label [[SCALAR_PH]], label [[VECTOR_PH:%.*]] |
| ; CHECK-HOIST: vector.ph: |
| ; CHECK-HOIST-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[Z]], 4 |
| ; CHECK-HOIST-NEXT: [[N_VEC:%.*]] = sub i64 [[Z]], [[N_MOD_VF]] |
| ; CHECK-HOIST-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK-HOIST: vector.body: |
| ; CHECK-HOIST-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-HOIST-NEXT: [[TMP4:%.*]] = add i64 [[INDEX]], 0 |
| ; CHECK-HOIST-NEXT: [[TMP5:%.*]] = getelementptr inbounds [[STRUCT_S]], ptr [[OBJ]], i64 0, i32 0, i64 [[TMP4]] |
| ; CHECK-HOIST-NEXT: [[TMP6:%.*]] = getelementptr inbounds i32, ptr [[TMP5]], i32 0 |
| ; CHECK-HOIST-NEXT: [[WIDE_LOAD:%.*]] = load <4 x i32>, ptr [[TMP6]], align 4, !alias.scope [[META0:![0-9]+]] |
| ; CHECK-HOIST-NEXT: [[TMP7:%.*]] = load i32, ptr [[TMP3]], align 4, !alias.scope [[META3:![0-9]+]] |
| ; CHECK-HOIST-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <4 x i32> poison, i32 [[TMP7]], i64 0 |
| ; CHECK-HOIST-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <4 x i32> [[BROADCAST_SPLATINSERT]], <4 x i32> poison, <4 x i32> zeroinitializer |
| ; CHECK-HOIST-NEXT: [[TMP8:%.*]] = add nsw <4 x i32> [[BROADCAST_SPLAT]], [[WIDE_LOAD]] |
| ; CHECK-HOIST-NEXT: [[TMP9:%.*]] = getelementptr inbounds [[STRUCT_S]], ptr [[OBJ]], i64 0, i32 2, i64 [[I]], i64 [[TMP4]] |
| ; CHECK-HOIST-NEXT: [[TMP10:%.*]] = getelementptr inbounds i32, ptr [[TMP9]], i32 0 |
| ; CHECK-HOIST-NEXT: [[WIDE_LOAD5:%.*]] = load <4 x i32>, ptr [[TMP10]], align 4, !alias.scope [[META5:![0-9]+]], !noalias [[META7:![0-9]+]] |
| ; CHECK-HOIST-NEXT: [[TMP11:%.*]] = add nsw <4 x i32> [[TMP8]], [[WIDE_LOAD5]] |
| ; CHECK-HOIST-NEXT: store <4 x i32> [[TMP11]], ptr [[TMP10]], align 4, !alias.scope [[META5]], !noalias [[META7]] |
| ; CHECK-HOIST-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4 |
| ; CHECK-HOIST-NEXT: [[TMP12:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]] |
| ; CHECK-HOIST-NEXT: br i1 [[TMP12]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP8:![0-9]+]] |
| ; CHECK-HOIST: middle.block: |
| ; CHECK-HOIST-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[Z]], [[N_VEC]] |
| ; CHECK-HOIST-NEXT: br i1 [[CMP_N]], label [[DOTOUTER]], label [[SCALAR_PH]] |
| ; CHECK-HOIST: scalar.ph: |
| ; CHECK-HOIST-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[VECTOR_MEMCHECK]] ], [ 0, [[DOTOUTER_PREHEADER]] ] |
| ; CHECK-HOIST-NEXT: br label [[DOTINNER:%.*]] |
| ; CHECK-HOIST: .exit: |
| ; CHECK-HOIST-NEXT: ret void |
| ; CHECK-HOIST: .outer: |
| ; CHECK-HOIST-NEXT: [[I_NEXT]] = add nuw nsw i64 [[I]], 1 |
| ; CHECK-HOIST-NEXT: [[EXITCOND_OUTER:%.*]] = icmp eq i64 [[I_NEXT]], 32 |
| ; CHECK-HOIST-NEXT: br i1 [[EXITCOND_OUTER]], label [[DOTEXIT:%.*]], label [[DOTOUTER_PREHEADER]] |
| ; CHECK-HOIST: .inner: |
| ; CHECK-HOIST-NEXT: [[J:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[J_NEXT:%.*]], [[DOTINNER]] ] |
| ; CHECK-HOIST-NEXT: [[TMP13:%.*]] = getelementptr inbounds [[STRUCT_S]], ptr [[OBJ]], i64 0, i32 0, i64 [[J]] |
| ; CHECK-HOIST-NEXT: [[TMP14:%.*]] = load i32, ptr [[TMP13]], align 4 |
| ; CHECK-HOIST-NEXT: [[TMP15:%.*]] = load i32, ptr [[TMP3]], align 4 |
| ; CHECK-HOIST-NEXT: [[TMP16:%.*]] = add nsw i32 [[TMP15]], [[TMP14]] |
| ; CHECK-HOIST-NEXT: [[TMP17:%.*]] = getelementptr inbounds [[STRUCT_S]], ptr [[OBJ]], i64 0, i32 2, i64 [[I]], i64 [[J]] |
| ; CHECK-HOIST-NEXT: [[TMP18:%.*]] = load i32, ptr [[TMP17]], align 4 |
| ; CHECK-HOIST-NEXT: [[TMP19:%.*]] = add nsw i32 [[TMP16]], [[TMP18]] |
| ; CHECK-HOIST-NEXT: store i32 [[TMP19]], ptr [[TMP17]], align 4 |
| ; CHECK-HOIST-NEXT: [[J_NEXT]] = add nuw nsw i64 [[J]], 1 |
| ; CHECK-HOIST-NEXT: [[EXITCOND_INNER:%.*]] = icmp eq i64 [[J_NEXT]], [[Z]] |
| ; CHECK-HOIST-NEXT: br i1 [[EXITCOND_INNER]], label [[DOTOUTER]], label [[DOTINNER]], !llvm.loop [[LOOP11:![0-9]+]] |
| ; |
| br label %.outer.preheader |
| |
| |
| .outer.preheader: |
| %i = phi i64 [ 0, %0 ], [ %i.next, %.outer ] |
| %1 = getelementptr inbounds %struct.s, ptr %obj, i64 0, i32 1, i64 %i |
| br label %.inner |
| |
| .exit: |
| ret void |
| |
| .outer: |
| %i.next = add nuw nsw i64 %i, 1 |
| %exitcond.outer = icmp eq i64 %i.next, 32 |
| br i1 %exitcond.outer, label %.exit, label %.outer.preheader |
| |
| .inner: |
| %j = phi i64 [ 0, %.outer.preheader ], [ %j.next, %.inner ] |
| %2 = getelementptr inbounds %struct.s, ptr %obj, i64 0, i32 0, i64 %j |
| %3 = load i32, ptr %2 |
| %4 = load i32, ptr %1 |
| %5 = add nsw i32 %4, %3 |
| %6 = getelementptr inbounds %struct.s, ptr %obj, i64 0, i32 2, i64 %i, i64 %j |
| %7 = load i32, ptr %6 |
| %8 = add nsw i32 %5, %7 |
| store i32 %8, ptr %6 |
| %j.next = add nuw nsw i64 %j, 1 |
| %exitcond.inner = icmp eq i64 %j.next, %z |
| br i1 %exitcond.inner, label %.outer, label %.inner |
| } |
