31 lines
913 B
LLVM
31 lines
913 B
LLVM
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; RUN: opt -disable-loop-unrolling -O1 -S < %s | FileCheck %s
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;
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; Check loop unrolling metadata is honored despite automatic unrolling
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; being disabled in the pass builder.
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;
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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; CHECK-LABEL: @forced(
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; CHECK: load
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; CHECK: load
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define void @forced(i32* nocapture %a) {
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entry:
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br label %for.body
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for.body:
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%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
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%arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv
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%0 = load i32, i32* %arrayidx, align 4
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%inc = add nsw i32 %0, 1
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store i32 %inc, i32* %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, 64
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br i1 %exitcond, label %for.end, label %for.body, !llvm.loop !0
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for.end:
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ret void
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}
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!0 = distinct !{!0, !{!"llvm.loop.unroll.enable"},
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!{!"llvm.loop.unroll.count", i32 2}}
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