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(num_sign_bit_copies): At end, return 1 if NONZERO has the high bit set.

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From-SVN: r4627
This commit is contained in:
Richard Stallman 1993-06-04 00:45:44 +00:00
parent 12194c388f
commit df6f4086b0
1 changed files with 1 additions and 1 deletions
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2
gcc/combine.c
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@ -6801,7 +6801,7 @@ num_sign_bit_copies (x, mode)
return 1;
nonzero = nonzero_bits (x, mode);
return (nonzero == GET_MODE_MASK (mode)
return (nonzero & ((HOST_WIDE_INT) 1 << (bitwidth - 1))
? 1 : bitwidth - floor_log2 (nonzero) - 1);
}