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| author | David Mosberger <davidm@hpl.hp.com> | 1999-06-14 13:10:29 +0000 |
|---|---|---|
| committer | Jim Wilson <wilson@gcc.gnu.org> | 1999-06-14 06:10:29 -0700 |
| commit | 2e8f9abf1701a94e8dd09384faf2777455333f20 (patch) | |
| tree | 3539a1dcbd89df0f0c705a28344d912747c18faf /gcc | |
| parent | 69c9f0fbbc6e5f16d86473b0cc68b139ca49c08b (diff) | |
| download | gcc-2e8f9abf1701a94e8dd09384faf2777455333f20.zip gcc-2e8f9abf1701a94e8dd09384faf2777455333f20.tar.gz gcc-2e8f9abf1701a94e8dd09384faf2777455333f20.tar.bz2 | |
Patch from David Mosberger to fix 32 host cross 64 target bug.
* combine.c (simplify_logical, case AND): Only call
simplify_and_const_int if the mode is no wider than HOST_WIDE_INT
or the constant is positive.
From-SVN: r27517
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/combine.c | 7 |
2 files changed, 12 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index ea6fbbb..2f6b1a4 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +Mon Jun 14 12:57:38 1999 David Mosberger <davidm@hpl.hp.com> + + * combine.c (simplify_logical, case AND): Only call + simplify_and_const_int if the mode is no wider than HOST_WIDE_INT + or the constant is positive. + Mon Jun 14 11:43:41 1999 Nick Clifton <nickc@cygnus.com> * configure.in: Fix typo in rs6000-ibm-aix4 case. diff --git a/gcc/combine.c b/gcc/combine.c index 0b64a86..60e0ef2 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -4902,7 +4902,12 @@ simplify_logical (x, last) && ! side_effects_p (op1)) x = gen_binary (AND, mode, XEXP (XEXP (op0, 0), 0), op1); - if (GET_CODE (op1) == CONST_INT) + /* We can call simplify_and_const_int only if we don't lose + any (sign) bits when converting INTVAL (op1) to + "unsigned HOST_WIDE_INT". */ + if (GET_CODE (op1) == CONST_INT + && (GET_MODE_BITSIZE (mode) <= HOST_BITS_PER_WIDE_INT + || INTVAL (op1) > 0)) { x = simplify_and_const_int (x, mode, op0, INTVAL (op1)); |