maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

Added inline constant expressions, including uses in binary subtract. 

llvm-svn: 4125
This commit is contained in:
Vikram S. Adve 2002-10-12 23:47:36 +00:00
parent 1a061216a0
commit 46f21c4443
1 changed files with 42 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

55
llvm/test/Regression/LLC/globalrefs.c
View File

@ -1,5 +1,6 @@
/* globalrefs.c - Test constant expressions constructed from global /* globalrefs.c - Test symbolic constant expressions constructed from
* addresses and index expressions into global addresses. * global addresses and index expressions into global addresses.
* Do this both with global constants and with inline constant.
* Instead of printing absolute addresses, print out the differences in * Instead of printing absolute addresses, print out the differences in
* memory addresses to get output that matches that of the native compiler. * memory addresses to get output that matches that of the native compiler.
*/ */
@ -18,23 +19,51 @@ struct test {
struct test TestArray[10]; struct test TestArray[10];
struct test Test1; struct test Test1;
struct test* TestArrayPtr = TestArray; /* Create global symbolic constants from the addresses of the above globals */
struct test* TestArrayPtr = &TestArray[3];
long* Aptr = &Test1.A; long* Aptr = &Test1.A;
unsigned* Xptr = &Test1.S.X; unsigned* Yptr = &Test1.S.Y;
struct test** NextPtr = &Test1.next;
void
printdiff(void* p1, void* p2)
{
printf(" 0x%lx", (unsigned long) p1 - (unsigned long) p2);
}
int int
main(int argc, char** argv) main(int argc, char** argv)
{ {
void* a1 = (void*) TestArrayPtr; unsigned long diff1, diff2, diff3, diff4;
void* a2 = (void*) Aptr;
void* a3 = (void*) Xptr;
#ifdef WANT_ABSOLUTE_ADDRESSES printf("sizeof(struct Test) = %llu\n\n", sizeof(struct test));
printf("Aptr = 0x%lx, Xptr = 0x%lx, TestArrayPtr = 0x%lx\n",
Aptr, Xptr, TestArrayPtr); printdiff(&TestArray[3], TestArray);
#endif printdiff(&Test1.A, &TestArray[3]);
printdiff(&Test1.S.Y, &Test1.A);
printdiff(&Test1.next, &Test1.S.Y);
printf("\n");
diff1 = (unsigned long) &TestArray[3] - (unsigned long) TestArray;
diff2 = (unsigned long) &Test1.A - (unsigned long) &TestArray[3];
diff3 = (unsigned long) &Test1.S.Y - (unsigned long) &Test1.A;
diff4 = (unsigned long) &Test1.next - (unsigned long) &Test1.S.Y;
printf("&TestArray[3] - TestArray = 0x%lx\n", diff1);
printf("Aptr - &TestArray[3] = 0x%lx\n", diff2);
printf("Xptr - Aptr = 0x%lx\n", diff3);
printf("NextPtr - Xptr = 0x%lx\n\n", diff4);
diff1 = (unsigned long) TestArrayPtr - (unsigned long) TestArray;
diff2 = (unsigned long) Aptr - (unsigned long) TestArrayPtr;
diff3 = (unsigned long) Yptr - (unsigned long) Aptr;
diff4 = (unsigned long) NextPtr - (unsigned long) Yptr;
printf("&TestArray[3] - TestArray = 0x%lx\n", diff1);
printf("Aptr - &TestArray[3] = 0x%lx\n", diff2);
printf("Xptr - Aptr = 0x%lx\n", diff3);
printf("NextPtr - Xptr = 0x%lx\n\n", diff4);
printf("Aptr - TestArrayPtr = 0x%lx, Xptr - Aptr = 0x%lx\n",
(uint64_t) a2 - (uint64_t) a1, (uint64_t) a3 - (uint64_t) a2);
return 0; return 0;
} }