forked from OSchip/llvm-project
140757bfaa
During LoopStrengthReduce, some of the SSA values that are used by debug values may be lost and/or salvaged. After LSR we attempt to recover any undef debug values, including any that were salvaged but then lost their values afterwards, by replacing the lost values with any live equal values (plus a possible constant offset) that have been gathered prior to running LSR. When we do this we restore the debug value's original DIExpression, to undo any salvaging (as we have gone back to using the original debug value). This process can currently produce invalid debug info if the number of operands has changed by salvaging during LSR. Replacing old values during the applyEqualValues step does not change the number of location operands, which means that when we restore the old DIExpression we may have a mismatch between the number of operands used by the debug value and the number of operands referenced by the DIExpression. This patch fixes this by restoring the full original location metadata at the start of the applyEqualValues step, so that there is no mismatch in operand count between the debug value and its DIExpression. Differential Revision: https://reviews.llvm.org/D98644 |
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| .. | ||
| AggressiveInstCombine | ||
| CFGuard | ||
| Coroutines | ||
| Hello | ||
| IPO | ||
| InstCombine | ||
| Instrumentation | ||
| ObjCARC | ||
| Scalar | ||
| Utils | ||
| Vectorize | ||
| CMakeLists.txt | ||