| ; RUN: opt < %s -loop-vectorize -S 2>&1 | FileCheck %s |
| ; RUN: opt < %s -debugify -loop-vectorize -S | FileCheck %s -check-prefix DEBUGLOC |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| |
| ; This test makes sure we don't duplicate the loop vectorizer's metadata |
| ; while marking them as already vectorized (by setting width = 1), even |
| ; at lower optimization levels, where no extra cleanup is done |
| |
| ; DEBUGLOC-LABEL: define void @_Z3fooPf( |
| ; Check that the phi to resume the scalar part of the loop |
| ; has Debug Location. |
| define void @_Z3fooPf(float* %a) { |
| entry: |
| br label %for.body |
| |
| for.body: ; preds = %for.body, %entry |
| %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] |
| %arrayidx = getelementptr inbounds float, float* %a, i64 %indvars.iv |
| %p = load float, float* %arrayidx, align 4 |
| %mul = fmul float %p, 2.000000e+00 |
| store float %mul, float* %arrayidx, align 4 |
| %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1 |
| %exitcond = icmp eq i64 %indvars.iv.next, 1024 |
| br i1 %exitcond, label %for.end, label %for.body, !llvm.loop !0 |
| |
| ; DEBUGLOC: scalar.ph: |
| ; DEBUGLOC-NEXT: %bc.resume.val = phi {{.*}} !dbg ![[DbgLoc:[0-9]+]] |
| ; |
| ; DEBUGLOC: ![[DbgLoc]] = !DILocation(line: 2 |
| |
| for.end: ; preds = %for.body |
| ret void |
| } |
| |
| !0 = !{!0, !1} |
| !1 = !{!"llvm.loop.vectorize.width", i32 4} |
| ; CHECK-NOT: !{metadata !"llvm.loop.vectorize.width", i32 4} |
| ; CHECK: !{!"llvm.loop.isvectorized", i32 1} |
