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1647429cc3
The byte swapping, when dealing with 4 byte (float) FP constants in DwarfExpression::addConstantFP, added in commit ef8992b9f0189005 was not correct. It always performed byte swapping using an uint64_t value. When dealing with 4 byte values the 4 interesting bytes ended up in the big end of the uint64_t, but later we emitted the 4 bytes at the little end. So we ended up with zeroes being emitted and faulty debug information. This patch simplifies things a bit, IMHO. Using the APInt representation throughout the function, instead of looking at the internal representation using getRawBytes and without using reinterpret_cast etc. And using API.byteSwap() should result in correct byte swapping independent of APInt being 4 or 8 bytes. Differential Revision: https://reviews.llvm.org/D86272 |
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