1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt < %s -loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -S | FileCheck %s 3target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 4 5 6; Function Attrs: nofree norecurse nounwind 7define void @a(i8* readnone %b) { 8; CHECK-LABEL: @a( 9; CHECK-NEXT: entry: 10; CHECK-NEXT: [[B1:%.*]] = ptrtoint i8* [[B:%.*]] to i64 11; CHECK-NEXT: [[CMP_NOT4:%.*]] = icmp eq i8* [[B]], null 12; CHECK-NEXT: br i1 [[CMP_NOT4]], label [[FOR_COND_CLEANUP:%.*]], label [[FOR_BODY_PREHEADER:%.*]] 13; CHECK: for.body.preheader: 14; CHECK-NEXT: [[TMP0:%.*]] = sub i64 0, [[B1]] 15; CHECK-NEXT: [[SCEVGEP:%.*]] = getelementptr i8, i8* null, i64 [[TMP0]] 16; CHECK-NEXT: [[EXITCOUNT_PTRCNT_TO_INT:%.*]] = ptrtoint i8* [[SCEVGEP]] to i64 17; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[EXITCOUNT_PTRCNT_TO_INT]], 4 18; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]] 19; CHECK: vector.ph: 20; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[EXITCOUNT_PTRCNT_TO_INT]], 4 21; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[EXITCOUNT_PTRCNT_TO_INT]], [[N_MOD_VF]] 22; CHECK-NEXT: [[TMP1:%.*]] = mul i64 [[N_VEC]], -1 23; CHECK-NEXT: [[IND_END:%.*]] = getelementptr i8, i8* null, i64 [[TMP1]] 24; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] 25; CHECK: vector.body: 26; CHECK-NEXT: [[POINTER_PHI:%.*]] = phi i8* [ null, [[VECTOR_PH]] ], [ [[PTR_IND:%.*]], [[PRED_STORE_CONTINUE7:%.*]] ] 27; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[PRED_STORE_CONTINUE7]] ] 28; CHECK-NEXT: [[TMP2:%.*]] = getelementptr i8, i8* [[POINTER_PHI]], <4 x i64> <i64 0, i64 -1, i64 -2, i64 -3> 29; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds i8, <4 x i8*> [[TMP2]], i64 -1 30; CHECK-NEXT: [[TMP4:%.*]] = extractelement <4 x i8*> [[TMP3]], i32 0 31; CHECK-NEXT: [[TMP5:%.*]] = getelementptr i8, i8* [[TMP4]], i32 0 32; CHECK-NEXT: [[TMP6:%.*]] = getelementptr i8, i8* [[TMP5]], i32 -3 33; CHECK-NEXT: [[TMP7:%.*]] = bitcast i8* [[TMP6]] to <4 x i8>* 34; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x i8>, <4 x i8>* [[TMP7]], align 1 35; CHECK-NEXT: [[REVERSE:%.*]] = shufflevector <4 x i8> [[WIDE_LOAD]], <4 x i8> poison, <4 x i32> <i32 3, i32 2, i32 1, i32 0> 36; CHECK-NEXT: [[TMP8:%.*]] = icmp eq <4 x i8> [[REVERSE]], zeroinitializer 37; CHECK-NEXT: [[TMP9:%.*]] = xor <4 x i1> [[TMP8]], <i1 true, i1 true, i1 true, i1 true> 38; CHECK-NEXT: [[TMP10:%.*]] = extractelement <4 x i1> [[TMP9]], i32 0 39; CHECK-NEXT: br i1 [[TMP10]], label [[PRED_STORE_IF:%.*]], label [[PRED_STORE_CONTINUE:%.*]] 40; CHECK: pred.store.if: 41; CHECK-NEXT: [[TMP11:%.*]] = extractelement <4 x i8*> [[TMP3]], i32 0 42; CHECK-NEXT: store i8 95, i8* [[TMP11]], align 1 43; CHECK-NEXT: br label [[PRED_STORE_CONTINUE]] 44; CHECK: pred.store.continue: 45; CHECK-NEXT: [[TMP12:%.*]] = extractelement <4 x i1> [[TMP9]], i32 1 46; CHECK-NEXT: br i1 [[TMP12]], label [[PRED_STORE_IF2:%.*]], label [[PRED_STORE_CONTINUE3:%.*]] 47; CHECK: pred.store.if2: 48; CHECK-NEXT: [[TMP13:%.*]] = extractelement <4 x i8*> [[TMP3]], i32 1 49; CHECK-NEXT: store i8 95, i8* [[TMP13]], align 1 50; CHECK-NEXT: br label [[PRED_STORE_CONTINUE3]] 51; CHECK: pred.store.continue3: 52; CHECK-NEXT: [[TMP14:%.*]] = extractelement <4 x i1> [[TMP9]], i32 2 53; CHECK-NEXT: br i1 [[TMP14]], label [[PRED_STORE_IF4:%.*]], label [[PRED_STORE_CONTINUE5:%.*]] 54; CHECK: pred.store.if4: 55; CHECK-NEXT: [[TMP15:%.*]] = extractelement <4 x i8*> [[TMP3]], i32 2 56; CHECK-NEXT: store i8 95, i8* [[TMP15]], align 1 57; CHECK-NEXT: br label [[PRED_STORE_CONTINUE5]] 58; CHECK: pred.store.continue5: 59; CHECK-NEXT: [[TMP16:%.*]] = extractelement <4 x i1> [[TMP9]], i32 3 60; CHECK-NEXT: br i1 [[TMP16]], label [[PRED_STORE_IF6:%.*]], label [[PRED_STORE_CONTINUE7]] 61; CHECK: pred.store.if6: 62; CHECK-NEXT: [[TMP17:%.*]] = extractelement <4 x i8*> [[TMP3]], i32 3 63; CHECK-NEXT: store i8 95, i8* [[TMP17]], align 1 64; CHECK-NEXT: br label [[PRED_STORE_CONTINUE7]] 65; CHECK: pred.store.continue7: 66; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 4 67; CHECK-NEXT: [[TMP18:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]] 68; CHECK-NEXT: [[PTR_IND]] = getelementptr i8, i8* [[POINTER_PHI]], i64 -4 69; CHECK-NEXT: br i1 [[TMP18]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP0:!llvm.loop !.*]] 70; CHECK: middle.block: 71; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[EXITCOUNT_PTRCNT_TO_INT]], [[N_VEC]] 72; CHECK-NEXT: br i1 [[CMP_N]], label [[FOR_COND_CLEANUP_LOOPEXIT:%.*]], label [[SCALAR_PH]] 73; CHECK: scalar.ph: 74; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i8* [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ null, [[FOR_BODY_PREHEADER]] ] 75; CHECK-NEXT: br label [[FOR_BODY:%.*]] 76; CHECK: for.cond.cleanup.loopexit: 77; CHECK-NEXT: br label [[FOR_COND_CLEANUP]] 78; CHECK: for.cond.cleanup: 79; CHECK-NEXT: ret void 80; CHECK: for.body: 81; CHECK-NEXT: [[C_05:%.*]] = phi i8* [ [[INCDEC_PTR:%.*]], [[IF_END:%.*]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ] 82; CHECK-NEXT: [[INCDEC_PTR]] = getelementptr inbounds i8, i8* [[C_05]], i64 -1 83; CHECK-NEXT: [[TMP19:%.*]] = load i8, i8* [[INCDEC_PTR]], align 1 84; CHECK-NEXT: [[TOBOOL_NOT:%.*]] = icmp eq i8 [[TMP19]], 0 85; CHECK-NEXT: br i1 [[TOBOOL_NOT]], label [[IF_END]], label [[IF_THEN:%.*]] 86; CHECK: if.then: 87; CHECK-NEXT: store i8 95, i8* [[INCDEC_PTR]], align 1 88; CHECK-NEXT: br label [[IF_END]] 89; CHECK: if.end: 90; CHECK-NEXT: [[CMP_NOT:%.*]] = icmp eq i8* [[INCDEC_PTR]], [[B]] 91; CHECK-NEXT: br i1 [[CMP_NOT]], label [[FOR_COND_CLEANUP_LOOPEXIT]], label [[FOR_BODY]], [[LOOP2:!llvm.loop !.*]] 92; 93 94entry: 95 %cmp.not4 = icmp eq i8* %b, null 96 br i1 %cmp.not4, label %for.cond.cleanup, label %for.body.preheader 97 98for.body.preheader: ; preds = %entry 99 br label %for.body 100 101for.cond.cleanup.loopexit: ; preds = %if.end 102 br label %for.cond.cleanup 103 104for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry 105 ret void 106 107for.body: ; preds = %for.body.preheader, %if.end 108 %c.05 = phi i8* [ %incdec.ptr, %if.end ], [ null, %for.body.preheader ] 109 %incdec.ptr = getelementptr inbounds i8, i8* %c.05, i64 -1 110 %0 = load i8, i8* %incdec.ptr, align 1 111 %tobool.not = icmp eq i8 %0, 0 112 br i1 %tobool.not, label %if.end, label %if.then 113 114if.then: ; preds = %for.body 115 store i8 95, i8* %incdec.ptr, align 1 116 br label %if.end 117 118if.end: ; preds = %for.body, %if.then 119 %cmp.not = icmp eq i8* %incdec.ptr, %b 120 br i1 %cmp.not, label %for.cond.cleanup.loopexit, label %for.body 121} 122 123