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| author | Richard Stallman <rms@gnu.org> | 1993-03-11 08:18:16 +0000 |
|---|---|---|
| committer | Richard Stallman <rms@gnu.org> | 1993-03-11 08:18:16 +0000 |
| commit | 88ece8db619050933051cfd6ef3f42ea5eba16a1 (patch) | |
| tree | a7090b7175ec38b11e3ffe34e6c7759678d77b33 | |
| parent | db27aeecc2d19d28f0349191b0cc3c98e1642129 (diff) | |
| download | gcc-88ece8db619050933051cfd6ef3f42ea5eba16a1.zip gcc-88ece8db619050933051cfd6ef3f42ea5eba16a1.tar.gz gcc-88ece8db619050933051cfd6ef3f42ea5eba16a1.tar.bz2 | |
(const_binop): When evaluating a shift, ignore
overflows generated by force_fit_type.
From-SVN: r3700
| -rw-r--r-- | gcc/fold-const.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index fe9b72d..ec04f44 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -1095,7 +1095,12 @@ const_binop (code, arg1, arg2, notrunc) &low, &hi, !uns); t = build_int_2 (low, hi); - break; + TREE_TYPE (t) = TREE_TYPE (arg1); + if (!notrunc) + force_fit_type (t, 0); + TREE_CONSTANT_OVERFLOW (t) + = TREE_CONSTANT_OVERFLOW (arg1) | TREE_CONSTANT_OVERFLOW (arg2); + return t; case RROTATE_EXPR: int2l = - int2l; |