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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals none --version 52; RUN: opt -passes=loop-vectorize -force-vector-interleave=2 -force-vector-width=1 -S %s | FileCheck %s3 4target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"5 6; Test for PR54427.7define void @test_nonconst_start_and_step(ptr %dst, i32 %start, i32 %step, i64 %N) {8; CHECK-LABEL: define void @test_nonconst_start_and_step(9; CHECK-SAME: ptr [[DST:%.*]], i32 [[START:%.*]], i32 [[STEP:%.*]], i64 [[N:%.*]]) {10; CHECK-NEXT: [[ENTRY:.*]]:11; CHECK-NEXT: [[NEG_STEP:%.*]] = sub i32 0, [[STEP]]12; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[N]], 213; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label %[[SCALAR_PH:.*]], label %[[VECTOR_PH:.*]]14; CHECK: [[VECTOR_PH]]:15; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[N]], 216; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[N]], [[N_MOD_VF]]17; CHECK-NEXT: [[DOTCAST:%.*]] = trunc i64 [[N_VEC]] to i3218; CHECK-NEXT: [[TMP1:%.*]] = mul i32 [[DOTCAST]], [[NEG_STEP]]19; CHECK-NEXT: [[TMP4:%.*]] = add i32 [[START]], [[TMP1]]20; CHECK-NEXT: br label %[[VECTOR_BODY:.*]]21; CHECK: [[VECTOR_BODY]]:22; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, %[[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], %[[VECTOR_BODY]] ]23; CHECK-NEXT: [[INDUCTION4:%.*]] = add i64 [[INDEX]], 124; CHECK-NEXT: [[TMP2:%.*]] = trunc i64 [[INDEX]] to i3225; CHECK-NEXT: [[TMP3:%.*]] = mul i32 [[TMP2]], [[NEG_STEP]]26; CHECK-NEXT: [[OFFSET_IDX:%.*]] = add i32 [[START]], [[TMP3]]27; CHECK-NEXT: [[TMP5:%.*]] = mul i32 1, [[NEG_STEP]]28; CHECK-NEXT: [[INDUCTION2:%.*]] = add i32 [[OFFSET_IDX]], [[TMP5]]29; CHECK-NEXT: [[TMP6:%.*]] = sub nsw i32 [[OFFSET_IDX]], [[STEP]]30; CHECK-NEXT: [[TMP7:%.*]] = sub nsw i32 [[INDUCTION2]], [[STEP]]31; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds i32, ptr [[DST]], i64 [[INDEX]]32; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds i32, ptr [[DST]], i64 [[INDUCTION4]]33; CHECK-NEXT: store i32 [[TMP6]], ptr [[TMP8]], align 234; CHECK-NEXT: store i32 [[TMP7]], ptr [[TMP9]], align 235; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 236; CHECK-NEXT: [[TMP11:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]37; CHECK-NEXT: br i1 [[TMP11]], label %[[MIDDLE_BLOCK:.*]], label %[[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]38; CHECK: [[MIDDLE_BLOCK]]:39; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[N]], [[N_VEC]]40; CHECK-NEXT: br i1 [[CMP_N]], label %[[EXIT:.*]], label %[[SCALAR_PH]]41; CHECK: [[SCALAR_PH]]:42; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], %[[MIDDLE_BLOCK]] ], [ 0, %[[ENTRY]] ]43; CHECK-NEXT: [[BC_RESUME_VAL2:%.*]] = phi i32 [ [[TMP4]], %[[MIDDLE_BLOCK]] ], [ [[START]], %[[ENTRY]] ]44; CHECK-NEXT: br label %[[LOOP:.*]]45; CHECK: [[LOOP]]:46; CHECK-NEXT: [[PRIMARY_IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], %[[SCALAR_PH]] ], [ [[PRIMARY_IV_NEXT:%.*]], %[[LOOP]] ]47; CHECK-NEXT: [[IV_DOWN:%.*]] = phi i32 [ [[BC_RESUME_VAL2]], %[[SCALAR_PH]] ], [ [[IV_DOWN_NEXT:%.*]], %[[LOOP]] ]48; CHECK-NEXT: [[IV_DOWN_NEXT]] = sub nsw i32 [[IV_DOWN]], [[STEP]]49; CHECK-NEXT: [[GEP_DST:%.*]] = getelementptr inbounds i32, ptr [[DST]], i64 [[PRIMARY_IV]]50; CHECK-NEXT: store i32 [[IV_DOWN_NEXT]], ptr [[GEP_DST]], align 251; CHECK-NEXT: [[PRIMARY_IV_NEXT]] = add nuw nsw i64 [[PRIMARY_IV]], 152; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i64 [[PRIMARY_IV_NEXT]], [[N]]53; CHECK-NEXT: br i1 [[EXITCOND]], label %[[EXIT]], label %[[LOOP]], !llvm.loop [[LOOP3:![0-9]+]]54; CHECK: [[EXIT]]:55; CHECK-NEXT: ret void56;57entry:58 br label %loop59 60loop:61 %primary.iv = phi i64 [ 0, %entry ], [ %primary.iv.next, %loop ]62 %iv.down = phi i32 [ %start, %entry ], [ %iv.down.next, %loop ]63 %iv.down.next = sub nsw i32 %iv.down, %step64 %gep.dst = getelementptr inbounds i32, ptr %dst, i64 %primary.iv65 store i32 %iv.down.next, ptr %gep.dst, align 266 %primary.iv.next = add nuw nsw i64 %primary.iv, 167 %exitcond = icmp eq i64 %primary.iv.next, %N68 br i1 %exitcond, label %exit, label %loop69 70exit:71 ret void72}73