forked from OSchip/llvm-project
f4ceef8d3f
When hoisting common code from the "then" and "else" branches of a condition to before the "if", the HoistThenElseCodeToIf routine will attempt to merge the debug location associated with the two original copies of the hoisted instruction. This is a problem in the special case where the hoisted instruction is a debug info intrinsic, since for those the debug location is considered part of the intrinsic and attempting to modify it may resut in invalid IR. This is the underlying cause of PR36410. This patch fixes the problem by handling debug info intrinsics specially: instead of hoisting one copy and merging the two locations, the code now simply hoists both copies, each with its original location intact. Note that this is still only done in the case where both original copies are otherwise (i.e. apart from location metadata) identical. Reviewed By: aprantl Differential Revision: https://reviews.llvm.org/D44312 llvm-svn: 327622 |
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| AggressiveInstCombine | ||
| Coroutines | ||
| Hello | ||
| IPO | ||
| InstCombine | ||
| Instrumentation | ||
| ObjCARC | ||
| Scalar | ||
| Utils | ||
| Vectorize | ||
| CMakeLists.txt | ||
| LLVMBuild.txt | ||