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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [testsuite/] [gcc.dg/] [torture/] [pr19683-1.c] - Blame information for rev 754

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Line No. Rev Author Line
1 689 jeremybenn
/* From PR rtl-optimization/19683.  On little-endian MIPS targets,
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   reload would incorrectly inherit the high part of the multiplication
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   result.  */
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/* { dg-do run { target mips*-*-* } } */
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extern void abort (void);
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extern void exit (int);
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#define REPEAT10(X, Y)                                  \
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  X(Y##0); X(Y##1); X(Y##2); X(Y##3); X(Y##4);          \
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  X(Y##5); X(Y##6); X(Y##7); X(Y##8); X(Y##9)
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#define REPEAT30(X) REPEAT10 (X, 0); REPEAT10 (X, 1); REPEAT10 (X, 2)
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#define IN(X) unsigned int x##X = ptr[0]
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#define OUT(X) ptr[0] = x##X
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union u { unsigned long long ll; unsigned int i[2]; };
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unsigned int __attribute__ ((nomips16))
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foo (volatile unsigned int *ptr)
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{
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  union u u;
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  int result;
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  u.ll = (unsigned long long) ptr[0] * ptr[0];
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  REPEAT30 (IN);
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  REPEAT30 (OUT);
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  asm ("#" : "=l" (result) : "l" (u.i[1]));
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  return result;
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}
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int __attribute__ ((nomips16))
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main (void)
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{
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  unsigned int array[] = { 1000 * 1000 * 1000 };
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  union u u;
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  u.ll = (unsigned long long) array[0] * array[0];
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  if (foo (array) != u.i[1])
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    abort ();
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  exit (0);
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}

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