ssa-ccp.c (ssa_ccp_substitute_constants): Don't crash if def is NULL.
* ssa-ccp.c (ssa_ccp_substitute_constants): Don't crash if def is NULL. * gcc.dg/20020304-1.c: New test. From-SVN: r50311
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@ -1,3 +1,8 @@
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2002-03-05 Jakub Jelinek <jakub@redhat.com>
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* ssa-ccp.c (ssa_ccp_substitute_constants): Don't crash if def
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is NULL.
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2002-03-05 Richard Henderson <rth@redhat.com>
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* rs6000.h (TOTAL_ALTIVEC_REGS): Fix off-by-one error.
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@ -856,10 +856,14 @@ ssa_ccp_substitute_constants ()
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{
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if (values[i].lattice_val == CONSTANT)
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{
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rtx def = VARRAY_RTX (ssa_definition, i);
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rtx set = single_set (def);
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rtx def = VARRAY_RTX (ssa_definition, i), set;
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struct df_link *curruse;
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/* Definition might have been deleted already. */
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if (! def)
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continue;
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set = single_set (def);
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if (! set)
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continue;
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@ -1,3 +1,7 @@
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2002-03-05 Jakub Jelinek <jakub@redhat.com>
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* gcc.dg/20020304-1.c: New test.
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2002-03-04 Zack Weinberg <zack@codesourcery.com>
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* gcc.c-torture/compile/20020304-1.c: New test case
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@ -0,0 +1,37 @@
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/* { dg-do compile } */
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/* { dg-options "-O -fssa -fssa-ccp" } */
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double a[10][35], b[10][8];
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int c, c, d, e, f, g, h;
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int foo ()
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{
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int i, j, k, l;
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if (c > 10)
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c = 10;
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for (j = 0; j < c; j++)
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{
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k = 0;
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for (l = 0; l < h; l++)
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{
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if (d != 5)
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return -1;
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k = l * g;
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a[j][k] = (double) e; k++;
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a[j][k] = (double) f; k++;
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}
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for (i = 0;i < 35; i++)
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{
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if (a[j][i] >= 0.9)
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a[j][i] = 0.9;
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if (a[j][i] <= 0.1)
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a[j][i] = 0.1;
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}
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k = 0;
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b[j][k] = (double) e; k++;
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b[j][k] = (double) f; k++;
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}
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return 0;
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}
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