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When push instructions are being used to pass function arguments on the stack, and either EH or debugging are enabled, we need to generate .cfi_adjust_cfa_offset directives appropriately. For (synch) EH, it is enough for the CFA offset to be correct at every call site, while for debugging we want to be correct after every push. Darwin does not support this well, so don't use pushes whenever it would be required. Differential Revision: http://reviews.llvm.org/D13767 llvm-svn: 251904 |
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