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| author | bstarynk <bstarynk@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-10-12 21:35:19 +0000 |
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| committer | bstarynk <bstarynk@138bc75d-0d04-0410-961f-82ee72b054a4> | 2011-10-12 21:35:19 +0000 |
| commit | a3ed3761ca3501faa64e92e7e38d32fdb146a0ff (patch) | |
| tree | ba5ea342196989db654db06103cbefccccbe76fc /gcc/convert.c | |
| parent | 64c0b1493f1490fe1a0171227b57429410dc15f2 (diff) | |
| download | gcc-a3ed3761ca3501faa64e92e7e38d32fdb146a0ff.tar.gz | |
2011-10-12 Basile Starynkevitch <basile@starynkevitch.net>
MELT branch merged with trunk rev 179863 using svnmerge.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/melt-branch@179867 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/convert.c')
| -rw-r--r-- | gcc/convert.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/gcc/convert.c b/gcc/convert.c index a647193ca94..f04b2048194 100644 --- a/gcc/convert.c +++ b/gcc/convert.c @@ -745,6 +745,15 @@ convert_to_integer (tree type, tree expr) tree arg0 = get_unwidened (TREE_OPERAND (expr, 0), type); tree arg1 = get_unwidened (TREE_OPERAND (expr, 1), type); + /* Do not try to narrow operands of pointer subtraction; + that will interfere with other folding. */ + if (ex_form == MINUS_EXPR + && CONVERT_EXPR_P (arg0) + && CONVERT_EXPR_P (arg1) + && POINTER_TYPE_P (TREE_TYPE (TREE_OPERAND (arg0, 0))) + && POINTER_TYPE_P (TREE_TYPE (TREE_OPERAND (arg1, 0)))) + break; + if (outprec >= BITS_PER_WORD || TRULY_NOOP_TRUNCATION (outprec, inprec) || inprec > TYPE_PRECISION (TREE_TYPE (arg0)) |