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