REPEAT_SYMBOL_CLEANUP is set when there is changes to the addressability of a symbol, typically when a OP_SYMADDR is removed. However, currently most OP_SYMADDRs are 'simplified'/folded into their use. For example: symaddr.64 %r1 <- var add.64 %r2 <- %r1, $4 is simplified into: add.64 %r2 <- var, $4 One of the bad consequences of this 'simplification' is that if the 'add' instruction is later optimized away, this correspond to an effective change to the addressability of the symbol. This is exactly as if the 'symaddr' has been removed before being so 'simplified', but because the symaddr is not there anymore there is no change recorded to the addressability to the symbol and some further optimizations may be missed. Change that by checking at each time the usage is removed from an instruction if the corresponding pseudo was a symbol and set REPEAT_SYMBOL_CLEANUP if it was the case. Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>