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29 lines
1.3 KiB
29 lines
1.3 KiB
4 months ago
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; RUN: opt < %s -loop-unroll -unroll-count=2 -S | FileCheck %s
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; LoopUnroll should unroll this loop into one big basic block.
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; CHECK: for.body:
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; CHECK: %i.013 = phi i64 [ 0, %entry ], [ %tmp16.1, %for.body ]
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; CHECK: br i1 %exitcond.1, label %for.end, label %for.body
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define void @foo(double* nocapture %p, i64 %n) nounwind {
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entry:
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%mul10 = shl i64 %n, 1 ; <i64> [#uses=2]
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br label %for.body
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for.body: ; preds = %entry, %for.body
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%i.013 = phi i64 [ %tmp16, %for.body ], [ 0, %entry ] ; <i64> [#uses=2]
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%arrayidx7 = getelementptr double, double* %p, i64 %i.013 ; <double*> [#uses=2]
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%tmp16 = add i64 %i.013, 1 ; <i64> [#uses=3]
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%arrayidx = getelementptr double, double* %p, i64 %tmp16 ; <double*> [#uses=1]
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%tmp4 = load double, double* %arrayidx ; <double> [#uses=1]
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%tmp8 = load double, double* %arrayidx7 ; <double> [#uses=1]
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%mul9 = fmul double %tmp8, %tmp4 ; <double> [#uses=1]
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store double %mul9, double* %arrayidx7
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%exitcond = icmp eq i64 %tmp16, %mul10 ; <i1> [#uses=1]
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.body, %entry
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ret void
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}
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