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| author | Richard Kenner <kenner@gcc.gnu.org> | 1993-12-25 09:28:45 -0500 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1993-12-25 09:28:45 -0500 |
| commit | 9e69be8c656d6bc4a6159e546c2297d28b844572 (patch) | |
| tree | a6ee34070916a92b0ece4bc1e3fc039eca36712b /gcc | |
| parent | 14d4a67a3239f8bd5ec0d1b327e6c3118cc5ce74 (diff) | |
| download | gcc-9e69be8c656d6bc4a6159e546c2297d28b844572.zip gcc-9e69be8c656d6bc4a6159e546c2297d28b844572.tar.gz gcc-9e69be8c656d6bc4a6159e546c2297d28b844572.tar.bz2 | |
(set_nonzero_bits_and_sign_copies, nonzero_bits): Fix errors in
SHORT_IMMEDIATES_SIGN_EXTEND code.
From-SVN: r6315
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/combine.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index 801d26c..8c27d89 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -728,7 +728,7 @@ set_nonzero_bits_and_sign_copies (x, set) && INTVAL (src) > 0 && 0 != (INTVAL (src) & ((HOST_WIDE_INT) 1 - << GET_MODE_BITSIZE (GET_MODE (x))))) + << (GET_MODE_BITSIZE (GET_MODE (x)) - 1)))) src = GEN_INT (INTVAL (src) | ((HOST_WIDE_INT) (-1) << GET_MODE_BITSIZE (GET_MODE (x)))); @@ -6559,7 +6559,7 @@ nonzero_bits (x, mode) && INTVAL (tem) > 0 && 0 != (INTVAL (tem) & ((HOST_WIDE_INT) 1 - << GET_MODE_BITSIZE (GET_MODE (x))))) + << (GET_MODE_BITSIZE (GET_MODE (x)) - 1)))) tem = GEN_INT (INTVAL (tem) | ((HOST_WIDE_INT) (-1) << GET_MODE_BITSIZE (GET_MODE (x)))); @@ -6574,11 +6574,9 @@ nonzero_bits (x, mode) case CONST_INT: #ifdef SHORT_IMMEDIATES_SIGN_EXTEND /* If X is negative in MODE, sign-extend the value. */ - if (INTVAL (x) > 0 - && 0 != (INTVAL (x) - & ((HOST_WIDE_INT) 1 << GET_MODE_BITSIZE (GET_MODE (x))))) - return (INTVAL (x) - | ((HOST_WIDE_INT) (-1) << GET_MODE_BITSIZE (GET_MODE (x)))); + if (INTVAL (x) > 0 && mode_width < BITS_PER_WORD + && 0 != (INTVAL (x) & ((HOST_WIDE_INT) 1 << (mode_width - 1)))) + return (INTVAL (x) | ((HOST_WIDE_INT) (-1) << mode_width)); #endif return INTVAL (x); |