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25 lines
540 B
LLVM
25 lines
540 B
LLVM
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; RUN: opt < %s -loop-reduce -S | FileCheck %s
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;
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; Test LSR's OptimizeShadowIV. Handle a floating-point IV with a
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; nonzero initial value.
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; rdar://9786536
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; First, make sure LSR doesn't crash on an empty IVUsers list.
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; CHECK: @dummyIV
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; CHECK-NOT: phi
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; CHECK-NOT: sitofp
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; CHECK: br
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define void @dummyIV() nounwind {
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entry:
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br label %loop
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loop:
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%i.01 = phi i32 [ -39, %entry ], [ %inc, %loop ]
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%conv7 = sitofp i32 %i.01 to double
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%inc = add nsw i32 %i.01, 1
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br i1 undef, label %loop, label %for.end
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for.end:
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unreachable
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}
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