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ae64db0c14
Currently, SCEV creates SCEVUnknown for every node of unreachable code. If we have a huge amounts of such code, we will be littering SE with these nodes. We could just state that they all are undef and save some memory. Differential Revision: https://reviews.llvm.org/D57567 Reviewed By: sanjoy llvm-svn: 353017
14 lines
188 B
LLVM
14 lines
188 B
LLVM
; RUN: opt < %s -analyze -scalar-evolution | FileCheck %s
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; CHECK: %t = add i64 %t, 1
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; CHECK: --> undef
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define void @foo() {
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entry:
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ret void
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dead:
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%t = add i64 %t, 1
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ret void
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}
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