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02764e0318
lookupTarget() can update the passed triple argument. This happens when no triple is given on the command line, and the architecture argument does not match the architecture in the default triple. For example, passing -march=aarch64 on the command line, and the default triple being x86_64-windows-msvc, the triple is changed to aarch64-windows-msvc. However, this triple is not saved, and later in the code, the triple is constructed again from the triple name, which is the default triple at this point. Thus the default triple is passed to constructor of MCSubtargetInfo instance. The triple is only used determine the object file format, and by chance, the AArch64 target also uses the COFF file format, and all is fine. Obviously, the AArch64 target does not support all available binary file formats, e.g. XCOFF and GOFF, and llvm-mca crashes in this case. The fix is to update the triple name with the changed triple name for the target lookup. Then the default object file format for the architecture is used, in the example ELF. Reviewed By: andreadb, abhina.sreeskantharajan Differential Revision: https://reviews.llvm.org/D100992 |
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| .. | ||
| Views | ||
| CMakeLists.txt | ||
| CodeRegion.cpp | ||
| CodeRegion.h | ||
| CodeRegionGenerator.cpp | ||
| CodeRegionGenerator.h | ||
| llvm-mca.cpp | ||
| PipelinePrinter.cpp | ||
| PipelinePrinter.h | ||