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PR bootstrap/53021 * alias.h (UNIQUE_BASE_VALUE_SP, UNIQUE_BASE_VALUE_ARGP, UNIQUE_BASE_VALUE_FP, UNIQUE_BASE_VALUE_HFP): Define. * alias.c (init_alias_targets): Use UNIQUE_BASE_VALUE_* macros instead of constants. * dse.c (record_store): Check for SP ADDRESS by comparing XWINT to UNIQUE_BASE_VALUE_SP instead of expecting XEXP to be stack_pointer_rtx. From-SVN: r186623
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