combine.c (known_cond): Do not reverse the condition when SMAX/UMAX is being considered and the...
* combine.c (known_cond): Do not reverse the condition when SMAX/UMAX is being considered and the condition is for equality or inequality. * testsuite/gcc.c-torture/execute/20010221-1.c: New test. From-SVN: r40077
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2001-02-26 Jason Eckhardt <jle@redhat.com>
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* combine.c (known_cond): Do not reverse the condition when
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SMAX/UMAX is being considered and the condition is for equality
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or inequality.
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* testsuite/gcc.c-torture/execute/20010221-1.c: New test.
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2001-02-26 Philip Blundell <philb@gnu.org>
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* config.gcc: Remove obsolete targets "arm*-*-linuxoldld" and
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@ -7512,7 +7512,12 @@ known_cond (x, cond, reg, val)
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{
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int unsignedp = (code == UMIN || code == UMAX);
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if (code == SMAX || code == UMAX)
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/* Do not reverse the condition when it is NE or EQ.
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This is because we cannot conclude anything about
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the value of 'SMAX (x, y)' when x is not equal to y,
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but we can when x equals y. */
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if ((code == SMAX || code == UMAX)
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&& ! (cond == EQ || cond == NE))
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cond = reverse_condition (cond);
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switch (cond)
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@ -0,0 +1,17 @@
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int n = 2;
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main ()
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{
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int i, x = 45;
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for (i = 0; i < n; i++)
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{
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if (i != 0)
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x = ( i > 0 ) ? i : 0;
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}
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if (x != 1)
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abort ();
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exit (0);
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}
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