1; RUN: opt -S -mtriple=amdgcn-unknown-amdhsa -mcpu=fiji -passes=loop-vectorize < %s | FileCheck %s 2 3 4; For AMDGPU, loop unroll in loop vectorizer is disabled when VF==1. 5; 6; CHECK-LABEL: @small_loop( 7; CHECK: store i32 8; CHECK-NOT: store i32 9; CHECK: ret 10define amdgpu_kernel void @small_loop(ptr nocapture %inArray, i32 %size) nounwind { 11entry: 12 %0 = icmp sgt i32 %size, 0 13 br i1 %0, label %loop, label %exit 14 15loop: ; preds = %entry, %loop 16 %iv = phi i32 [ %iv1, %loop ], [ 0, %entry ] 17 %1 = getelementptr inbounds i32, ptr %inArray, i32 %iv 18 %2 = load i32, ptr %1, align 4 19 %3 = add nsw i32 %2, 6 20 store i32 %3, ptr %1, align 4 21 %iv1 = add i32 %iv, 1 22; %lftr.wideiv = trunc i64 %indvars.iv.next to i32 23 %cond = icmp eq i32 %iv1, %size 24 br i1 %cond, label %exit, label %loop 25 26exit: ; preds = %loop, %entry 27 ret void 28} 29