| ; RUN: opt -S -mtriple=amdgcn-unknown-amdhsa -mcpu=fiji -loop-vectorize < %s | FileCheck %s |
| |
| |
| ; For AMDGPU, loop unroll in loop vectorizer is disabled when VF==1. |
| ; |
| ; CHECK-LABEL: @small_loop( |
| ; CHECK: store i32 |
| ; CHECK-NOT: store i32 |
| ; CHECK: ret |
| define amdgpu_kernel void @small_loop(i32* nocapture %inArray, i32 %size) nounwind { |
| 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 |
| ; %lftr.wideiv = trunc i64 %indvars.iv.next to i32 |
| %cond = icmp eq i32 %iv1, %size |
| br i1 %cond, label %exit, label %loop |
| |
| exit: ; preds = %loop, %entry |
| ret void |
| } |