1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt -S -mtriple=riscv64 -mattr=+v -passes=loop-vectorize -scalable-vectorization=off -riscv-v-vector-bits-min=0 < %s | FileCheck %s 3 4; Make sure we don't unroll scalar loops in the loop vectorizer. 5; 6define void @small_loop(ptr nocapture %inArray, i32 %size) nounwind { 7; CHECK-LABEL: @small_loop( 8; CHECK-NEXT: entry: 9; CHECK-NEXT: [[TMP0:%.*]] = icmp sgt i32 [[SIZE:%.*]], 0 10; CHECK-NEXT: br i1 [[TMP0]], label [[LOOP_PREHEADER:%.*]], label [[EXIT:%.*]] 11; CHECK: loop.preheader: 12; CHECK-NEXT: br label [[LOOP:%.*]] 13; CHECK: loop: 14; CHECK-NEXT: [[IV:%.*]] = phi i32 [ [[IV1:%.*]], [[LOOP]] ], [ 0, [[LOOP_PREHEADER]] ] 15; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i32, ptr [[INARRAY:%.*]], i32 [[IV]] 16; CHECK-NEXT: [[TMP2:%.*]] = load i32, ptr [[TMP1]], align 4 17; CHECK-NEXT: [[TMP3:%.*]] = add nsw i32 [[TMP2]], 6 18; CHECK-NEXT: store i32 [[TMP3]], ptr [[TMP1]], align 4 19; CHECK-NEXT: [[IV1]] = add i32 [[IV]], 1 20; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[IV1]], [[SIZE]] 21; CHECK-NEXT: br i1 [[COND]], label [[EXIT_LOOPEXIT:%.*]], label [[LOOP]] 22; CHECK: exit.loopexit: 23; CHECK-NEXT: br label [[EXIT]] 24; CHECK: exit: 25; CHECK-NEXT: ret void 26; 27entry: 28 %0 = icmp sgt i32 %size, 0 29 br i1 %0, label %loop, label %exit 30 31loop: ; preds = %entry, %loop 32 %iv = phi i32 [ %iv1, %loop ], [ 0, %entry ] 33 %1 = getelementptr inbounds i32, ptr %inArray, i32 %iv 34 %2 = load i32, ptr %1, align 4 35 %3 = add nsw i32 %2, 6 36 store i32 %3, ptr %1, align 4 37 %iv1 = add i32 %iv, 1 38 %cond = icmp eq i32 %iv1, %size 39 br i1 %cond, label %exit, label %loop 40 41exit: ; preds = %loop, %entry 42 ret void 43} 44