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28 lines
559 B
LLVM
28 lines
559 B
LLVM
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; RUN: opt -indvars -S < %s | FileCheck %s
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declare void @use(i1)
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define void @f() {
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; CHECK-LABEL: @f(
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entry:
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%x = alloca i32
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%y = alloca i32
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br label %loop
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loop:
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%iv = phi i32 [ 0, %entry ], [ %iv.inc, %loop ]
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%iv.inc = add i32 %iv, 1
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%x.gep = getelementptr i32, i32* %x, i32 %iv
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%eql = icmp eq i32* %x.gep, %y
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; CHECK-NOT: @use(i1 true)
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call void @use(i1 %eql)
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; %be.cond deliberately 'false' -- we want want the trip count to be 0.
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%be.cond = icmp ult i32 %iv, 0
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br i1 %be.cond, label %loop, label %leave
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leave:
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ret void
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}
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