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Mirror of https://github.com/RPCS3/llvm-mirror
51e4379d7b
A random set of attributes are implemented by llc/opt forcing the string attributes on the IR functions before processing anything. This would not happen for MIR functions, which have not yet been created at this point. Use a callback in the MIR parser, purely to avoid dealing with the ugliness that the command line flags are in a .inc file, and would require allowing access to these flags from multiple places (either from the MIR parser directly, or a new utility pass to implement these flags). It would probably be better to cleanup the flag handling into a separate library. This is in preparation for treating more command line flags with a corresponding function attribute in a more uniform way. The fast math flags in particular have a messy system where the command line flag sets the behavior from a function attribute if present, and otherwise the command line flag. This means if any other pass tries to inspect the function attributes directly, it will be inconsistent with the intended behavior. This is also inconsistent with the current behavior of -mcpu and -mattr, which overwrites any pre-existing function attributes. I would like to move this to consistenly have the command line flags not overwrite any pre-existing attributes, and to always ensure the command line flags are consistent with the function attributes. |
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