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25 lines
526 B
LLVM
25 lines
526 B
LLVM
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; RUN: llvm-as < %s | opt -sccp -adce -simplifycfg | llvm-dis | not grep br
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; No matter how hard you try, sqrt(1.0) is always 1.0. This allows the
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; optimizer to delete this loop.
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declare double %sqrt(double)
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double %test(uint %param) {
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entry:
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br label %Loop
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Loop:
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%I2 = phi uint [ 0, %entry ], [ %I3, %Loop ]
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%V = phi double [ 1.0, %entry], [ %V2, %Loop ]
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%V2 = call double %sqrt(double %V)
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%I3 = add uint %I2, 1
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%tmp.7 = setne uint %I3, %param
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br bool %tmp.7, label %Loop, label %Exit
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Exit:
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ret double %V
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}
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