17 lines
624 B
LLVM
17 lines
624 B
LLVM
; RUN: opt < %s -instcombine -S | grep {lshr.*3}
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; RUN: opt < %s -instcombine -S | grep {call .*%cond}
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; PR2506
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; We can simplify the operand of udiv to '8', but not the operand to the
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; call. If the callee never returns, we can't assume the div is reachable.
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define i32 @a(i32 %x, i32 %y) {
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entry:
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%tobool = icmp ne i32 %y, 0 ; <i1> [#uses=1]
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%cond = select i1 %tobool, i32 8, i32 0 ; <i32> [#uses=2]
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%call = call i32 @b( i32 %cond ) ; <i32> [#uses=0]
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%div = udiv i32 %x, %cond ; <i32> [#uses=1]
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ret i32 %div
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}
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declare i32 @b(i32)
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