| ; REQUIRES: asserts |
| ; RUN: opt -loop-vectorize -pass-remarks-analysis=loop-vectorize -debug-only=loop-vectorize -S -scalable-vectorization=on < %s 2>&1 | FileCheck %s |
| |
| target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" |
| |
| ; CHECK: LV: User VF=vscale x 4 is ignored because scalable vectors are not available. |
| ; CHECK: remark: <unknown>:0:0: User-specified vectorization factor vscale x 4 is ignored because the target does not support scalable vectors. The compiler will pick a more suitable value. |
| ; CHECK: LV: The Widest register safe to use is: 32 bits. |
| define void @test1(i32* %a, i32* %b) { |
| entry: |
| br label %loop |
| |
| loop: |
| %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ] |
| %arrayidx = getelementptr inbounds i32, i32* %a, i64 %iv |
| %0 = load i32, i32* %arrayidx, align 4 |
| %arrayidx2 = getelementptr inbounds i32, i32* %b, i64 %iv |
| %1 = load i32, i32* %arrayidx2, align 4 |
| %add = add nsw i32 %1, %0 |
| %2 = add nuw nsw i64 %iv, 4 |
| %arrayidx5 = getelementptr inbounds i32, i32* %a, i64 %2 |
| store i32 %add, i32* %arrayidx5, align 4 |
| %iv.next = add nuw nsw i64 %iv, 1 |
| %exitcond.not = icmp eq i64 %iv.next, 1024 |
| br i1 %exitcond.not, label %exit, label %loop, !llvm.loop !0 |
| |
| exit: |
| ret void |
| } |
| |
| !0 = !{!0, !1, !2} |
| !1 = !{!"llvm.loop.vectorize.width", i32 4} |
| !2 = !{!"llvm.loop.vectorize.scalable.enable", i1 true} |