diff options
Diffstat (limited to 'llvm/test/Transforms/LoopVectorize/preserve-dbg-loc-and-loop-metadata.ll')
| -rw-r--r-- | llvm/test/Transforms/LoopVectorize/preserve-dbg-loc-and-loop-metadata.ll | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/llvm/test/Transforms/LoopVectorize/preserve-dbg-loc-and-loop-metadata.ll b/llvm/test/Transforms/LoopVectorize/preserve-dbg-loc-and-loop-metadata.ll new file mode 100644 index 00000000000..8880d99290d --- /dev/null +++ b/llvm/test/Transforms/LoopVectorize/preserve-dbg-loc-and-loop-metadata.ll @@ -0,0 +1,38 @@ +; 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} |
