[PATCH] D67281: [AArch64][SimplifyCFG] Add additional cost for instructions in mergeConditionalStoreToAddress

[Pavel Kosov via Phabricator via llvm-commits]

kpdev42 updated this revision to Diff 219480.
kpdev42 edited reviewers, added: lebedev.ri; removed: craig.topper, sanjoy.
kpdev42 added a comment.

Simplify test case. Relevant C code is:

  typedef struct {
    int * dummy;
    void *proc;
  } ptr_wrapper;
  
  ptr_wrapper * fds;
  
  int do_select(const unsigned long in, 
                unsigned long bit,
                const unsigned long mask)
  {
    int retval = 0;
    unsigned long res_in = 0;
  
    for( ; bit != 0; bit <<= 1)
    {
    	if (in & bit) {
    		res_in |= bit;
    		retval++;
    		fds->proc = NULL;
    	}
    	
    	if (mask & 0x1) {
    		fds->proc = NULL;
    	}
    }
  
    return retval + res_in;
  }


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D67281/new/

https://reviews.llvm.org/D67281

Files:
  llvm/test/Transforms/SimplifyCFG/AArch64/check-instr-cost-for-folding.ll

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