forked from OSchip/llvm-project
ee86688b81
When exporting statepoint results to virtual registers we try to avoid generating exports for duplicated inputs. But we erroneously use IR Value* to check if inputs are duplicated. Instead, we should use SDValue, because even different IR values can get lowered to the same SDValue. I'm adding a (degenerate) test case which emphasizes importance of this feature for invoke statepoints. If we fail to export only unique values we will end up with something like that: %0 = STATEPOINT %1 = COPY %0 landing_pad: <use of %1> And when exceptional path is taken, %1 is left uninitialized (COPY is never execute). Reviewed By: reames Differential Revision: https://reviews.llvm.org/D87695 |
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README.txt
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