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| author | ian <ian@138bc75d-0d04-0410-961f-82ee72b054a4> | 2005-10-12 20:30:46 +0000 |
|---|---|---|
| committer | ian <ian@138bc75d-0d04-0410-961f-82ee72b054a4> | 2005-10-12 20:30:46 +0000 |
| commit | 201bc2b0bf9da2c5de0660e0f03fdc975350e29f (patch) | |
| tree | 7660ea507d7f2bb6251942eadcbc1293734cb064 /gcc/combine.c | |
| parent | 3923b69f425942813467f05a97628cce628cb260 (diff) | |
| download | gcc-201bc2b0bf9da2c5de0660e0f03fdc975350e29f.tar.gz | |
* combine.c (make_extraction): Correct offset computation.
* gcc.c-torture/execute/20051012-1.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@105330 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index 3be34e4b44d..ff10663a147 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -6512,11 +6512,12 @@ make_extraction (enum machine_mode mode, rtx inner, HOST_WIDE_INT pos, offset -= GET_MODE_SIZE (is_mode) - GET_MODE_SIZE (inner_mode); /* If this is a constant position, we can move to the desired byte. - Be careful not to go beyond the original object. */ + Be careful not to go beyond the original object and maintain the + natural alignment of the memory. */ if (pos_rtx == 0) { enum machine_mode bfmode = smallest_mode_for_size (len, MODE_INT); - offset += pos / GET_MODE_BITSIZE (bfmode); + offset += (pos / GET_MODE_BITSIZE (bfmode)) * GET_MODE_SIZE (bfmode); pos %= GET_MODE_BITSIZE (bfmode); } |