forked from OSchip/llvm-project
75 lines
2.0 KiB
C
75 lines
2.0 KiB
C
/*
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* Program: llc
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*
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* Test Name: badfuncptr.c
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*
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* Test Problem:
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* Indirect call via function pointer is mishandled in reg. alloc.
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* The indirect call address was allocated the same register as the
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* first outgoing argument, so it was overwritten before the call.
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*
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* Test Resolution:
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* In PhyRegAlloc.cpp, mark the live range for the indirect call
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* address as having a Call Interference. This has to be done
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* as a special case since it may not be live after the call.
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*
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* Resolution Status:
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* Fixed on 3/29/02 -- Adve.
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*/
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/* For copyright information, see olden_v1.0/COPYRIGHT */
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#include <stdlib.h>
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/* #include "hash.h" */
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/*--------*/
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/* hash.h */
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/*--------*/
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/* For copyright information, see olden_v1.0/COPYRIGHT */
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#include "stdio.h"
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typedef struct hash_entry {
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unsigned int key;
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void *entry;
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struct hash_entry *next;
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} *HashEntry;
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typedef struct hash {
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HashEntry *array;
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int (*mapfunc)(unsigned int);
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int size;
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} *Hash;
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Hash MakeHash(int size, int (*map)(unsigned int));
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void *HashLookup(unsigned int key, Hash hash);
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void HashInsert(void *entry,unsigned int key, Hash hash);
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void HashDelete(unsigned int key, Hash hash);
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/*--------*/
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/* END hash.h */
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/*--------*/
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#define assert(num,a) if (!(a)) {printf("Assertion failure:%d in hash\n",num); exit(-1);}
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void *HashLookup(unsigned int key, Hash hash)
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{
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int j;
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HashEntry ent;
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j = (hash->mapfunc)(key); /* 14% miss in hash->mapfunc */
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assert(1,j>=0);
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assert(2,j<hash->size);
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for (ent = hash->array[j]; /* 17% miss in hash->array[j] */ /* adt_pf can't detect :( */
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ent && /* 47% miss in ent->key */ /* adt_pf can detect :) */
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ent->key!=key;
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ent=ent->next); /* 8% miss in ent->next */ /* adt_pf can detect :) */
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if (ent) return ent->entry;
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return NULL;
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}
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/* essentially dummy main so testing does not fail */
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int
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main()
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{
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printf("&HashLookup = %d\n", !!HashLookup);
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return 0;
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}
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