forked from OSchip/llvm-project
32 lines
966 B
LLVM
32 lines
966 B
LLVM
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; RUN: opt < %s -S -loop-unroll -unroll-allow-partial -unroll-max-count=1 | FileCheck %s
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; Checks that unroll MaxCount is honored.
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;
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; CHECK-LABEL: @foo(
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; CHECK-LABEL: for.body:
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; CHECK-NEXT: phi
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; CHECK-NEXT: getelementptr
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; CHECK-NEXT: load
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; CHECK-NEXT: add
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; CHECK-NEXT: store
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; CHECK-NEXT: add
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; CHECK-NEXT: icmp
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; CHECK-NEXT: br
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define void @foo(i32* nocapture %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 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, 1024
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br i1 %exitcond, label %for.end, label %for.body
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for.end: ; preds = %for.body
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ret void
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}
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