diff options
Diffstat (limited to 'contrib/gcc/cse.c')
| -rw-r--r-- | contrib/gcc/cse.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/contrib/gcc/cse.c b/contrib/gcc/cse.c index 45613ed..7182b74 100644 --- a/contrib/gcc/cse.c +++ b/contrib/gcc/cse.c @@ -5861,7 +5861,15 @@ fold_rtx (x, insn) hence not save anything) or be incorrect. */ if (const_arg1 != 0 && GET_CODE (const_arg1) == CONST_INT && INTVAL (const_arg1) < 0 - && - INTVAL (const_arg1) >= 0 + /* This used to test + + - INTVAL (const_arg1) >= 0 + + But The Sun V5.0 compilers mis-compiled that test. So + instead we test for the problematic value in a more direct + manner and hope the Sun compilers get it correct. */ + && INTVAL (const_arg1) != + ((HOST_WIDE_INT) 1 << (HOST_BITS_PER_WIDE_INT - 1)) && GET_CODE (folded_arg1) == REG) { rtx new_const = GEN_INT (- INTVAL (const_arg1)); |
