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The FixSGPRCopies pass converts instructions to VALU when removing illegal VGPR to SGPR copies. Instructions that use SCC are changed to use VCC instead. When that happens, the pass must also change instructions that define SCC to define VCC. The pass was not changing the SCC definition when an ADDC is converted due to a input that is a VGPR to SGPR copy. But, the initial ADD insruction, which define SCC, is not converted. This causes a compilation failure due to a use of an undefined physical register. This patch adds code that inserts the SCC definition in the MoveToVALU worklist when a SCC use is converted to a VCC use. Differential Revision: https://reviews.llvm.org/D102111 |
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| DWARFLinker | ||
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| Fuzzer | ||
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