1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4 2; RUN: opt -passes=loop-vectorize -force-tail-folding-style=data-with-evl \ 3; RUN: -prefer-predicate-over-epilogue=predicate-dont-vectorize \ 4; RUN: -mtriple=riscv64 -mattr=+v -S < %s | FileCheck %s 5 6; Make sure we do not vectorize a loop with a widened int induction. 7define void @test_wide_integer_induction(ptr noalias %a, i64 %N) { 8; CHECK-LABEL: define void @test_wide_integer_induction( 9; CHECK-SAME: ptr noalias [[A:%.*]], i64 [[N:%.*]]) #[[ATTR0:[0-9]+]] { 10; CHECK-NEXT: entry: 11; CHECK-NEXT: br label [[FOR_BODY:%.*]] 12; CHECK: for.body: 13; CHECK-NEXT: [[IV:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[FOR_BODY]] ] 14; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[IV]] 15; CHECK-NEXT: store i64 [[IV]], ptr [[ARRAYIDX]], align 8 16; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1 17; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i64 [[IV_NEXT]], [[N]] 18; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[FOR_COND_CLEANUP:%.*]], label [[FOR_BODY]] 19; CHECK: for.cond.cleanup: 20; CHECK-NEXT: ret void 21; 22entry: 23 br label %for.body 24 25for.body: 26 %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ] 27 %arrayidx = getelementptr inbounds i64, ptr %a, i64 %iv 28 store i64 %iv, ptr %arrayidx, align 8 29 %iv.next = add nuw nsw i64 %iv, 1 30 %exitcond.not = icmp eq i64 %iv.next, %N 31 br i1 %exitcond.not, label %for.cond.cleanup, label %for.body 32 33for.cond.cleanup: 34 ret void 35} 36 37; Make sure we do not vectorize a loop with a widened ptr induction. 38define void @test_wide_ptr_induction(ptr noalias %a, ptr noalias %b, i64 %N) { 39; CHECK-LABEL: define void @test_wide_ptr_induction( 40; CHECK-SAME: ptr noalias [[A:%.*]], ptr noalias [[B:%.*]], i64 [[N:%.*]]) #[[ATTR0]] { 41; CHECK-NEXT: entry: 42; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] 43; CHECK: for.body: 44; CHECK-NEXT: [[EVL_BASED_IV:%.*]] = phi i64 [ 0, [[VECTOR_PH:%.*]] ], [ [[INDEX_EVL_NEXT:%.*]], [[VECTOR_BODY]] ] 45; CHECK-NEXT: [[ADDR:%.*]] = phi ptr [ [[INCDEC_PTR:%.*]], [[VECTOR_BODY]] ], [ [[B]], [[VECTOR_PH]] ] 46; CHECK-NEXT: [[INCDEC_PTR]] = getelementptr inbounds i8, ptr [[ADDR]], i64 8 47; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i64, ptr [[A]], i64 [[EVL_BASED_IV]] 48; CHECK-NEXT: store ptr [[ADDR]], ptr [[ARRAYIDX]], align 8 49; CHECK-NEXT: [[INDEX_EVL_NEXT]] = add nuw nsw i64 [[EVL_BASED_IV]], 1 50; CHECK-NEXT: [[EXITCOND_NOT:%.*]] = icmp eq i64 [[INDEX_EVL_NEXT]], [[N]] 51; CHECK-NEXT: br i1 [[EXITCOND_NOT]], label [[FOR_COND_CLEANUP:%.*]], label [[VECTOR_BODY]] 52; CHECK: for.cond.cleanup: 53; CHECK-NEXT: ret void 54; 55entry: 56 br label %for.body 57 58for.body: 59 %iv = phi i64 [ 0, %entry ], [ %iv.next, %for.body ] 60 %addr = phi ptr [ %incdec.ptr, %for.body ], [ %b, %entry ] 61 %incdec.ptr = getelementptr inbounds i8, ptr %addr, i64 8 62 %arrayidx = getelementptr inbounds i64, ptr %a, i64 %iv 63 store ptr %addr, ptr %arrayidx, align 8 64 %iv.next = add nuw nsw i64 %iv, 1 65 %exitcond.not = icmp eq i64 %iv.next, %N 66 br i1 %exitcond.not, label %for.cond.cleanup, label %for.body 67 68for.cond.cleanup: 69 ret void 70} 71