forked from OSchip/llvm-project
0aaf8c16ac
Clamp function was too optimistic when choosing signed or unsigned min/max function for calculations. In fact, `!IsSignedPredicate` guarantees us that `Smallest` and `Greatest` can be compared safely using unsigned predicates, but we did not check this for `S` which can in theory be negative. This patch makes Clamp use signed min/max for cases when it fails to prove `S` being non-negative, and it adds a test where such situation may lead to incorrect conditions calculation. Differential Revision: https://reviews.llvm.org/D36873 llvm-svn: 311205 |
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Coroutines | ||
Hello | ||
IPO | ||
InstCombine | ||
Instrumentation | ||
ObjCARC | ||
Scalar | ||
Utils | ||
Vectorize | ||
CMakeLists.txt | ||
LLVMBuild.txt |