; NOTE: Assertions have been autogenerated by utils/update_test_checks.py ; RUN: opt -S -mtriple=riscv64 -mattr=+v -loop-vectorize -scalable-vectorization=off -riscv-v-vector-bits-min=0 < %s | FileCheck %s ; Make sure we don't unroll scalar loops in the loop vectorizer. ; define void @small_loop(i32* nocapture %inArray, i32 %size) nounwind { ; CHECK-LABEL: @small_loop( ; CHECK-NEXT: entry: ; CHECK-NEXT: [[TMP0:%.*]] = icmp sgt i32 [[SIZE:%.*]], 0 ; CHECK-NEXT: br i1 [[TMP0]], label [[LOOP_PREHEADER:%.*]], label [[EXIT:%.*]] ; CHECK: loop.preheader: ; CHECK-NEXT: br label [[LOOP:%.*]] ; CHECK: loop: ; CHECK-NEXT: [[IV:%.*]] = phi i32 [ [[IV1:%.*]], [[LOOP]] ], [ 0, [[LOOP_PREHEADER]] ] ; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i32, i32* [[INARRAY:%.*]], i32 [[IV]] ; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[TMP1]], align 4 ; CHECK-NEXT: [[TMP3:%.*]] = add nsw i32 [[TMP2]], 6 ; CHECK-NEXT: store i32 [[TMP3]], i32* [[TMP1]], align 4 ; CHECK-NEXT: [[IV1]] = add i32 [[IV]], 1 ; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[IV1]], [[SIZE]] ; CHECK-NEXT: br i1 [[COND]], label [[EXIT_LOOPEXIT:%.*]], label [[LOOP]] ; CHECK: exit.loopexit: ; CHECK-NEXT: br label [[EXIT]] ; CHECK: exit: ; CHECK-NEXT: ret void ; entry: %0 = icmp sgt i32 %size, 0 br i1 %0, label %loop, label %exit loop: ; preds = %entry, %loop %iv = phi i32 [ %iv1, %loop ], [ 0, %entry ] %1 = getelementptr inbounds i32, i32* %inArray, i32 %iv %2 = load i32, i32* %1, align 4 %3 = add nsw i32 %2, 6 store i32 %3, i32* %1, align 4 %iv1 = add i32 %iv, 1 %cond = icmp eq i32 %iv1, %size br i1 %cond, label %exit, label %loop exit: ; preds = %loop, %entry ret void }