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| author | J"orn Rennecke <amylaar@cygnus.co.uk> | 1999-01-27 11:35:30 +0000 |
|---|---|---|
| committer | Joern Rennecke <amylaar@gcc.gnu.org> | 1999-01-27 11:35:30 +0000 |
| commit | d91dfff4d1a480cd924e7273d5c79d02bd4ec768 (patch) | |
| tree | 933b0d05eb053d65f6b7b33bc67abec736876c46 /gcc/function.c | |
| parent | a1660badb60537faafc659b24e2bc95a4b5fccba (diff) | |
| download | gcc-d91dfff4d1a480cd924e7273d5c79d02bd4ec768.zip gcc-d91dfff4d1a480cd924e7273d5c79d02bd4ec768.tar.gz gcc-d91dfff4d1a480cd924e7273d5c79d02bd4ec768.tar.bz2 | |
function.c (purge_addressof_1): Handle case when a register has been used in a wider mode.
* function.c (purge_addressof_1): Handle case when a register
has been used in a wider mode.
From-SVN: r24887
Diffstat (limited to 'gcc/function.c')
| -rw-r--r-- | gcc/function.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/gcc/function.c b/gcc/function.c index 90540d7..e2c836d 100644 --- a/gcc/function.c +++ b/gcc/function.c @@ -2939,7 +2939,20 @@ purge_addressof_1 (loc, insn, force, store) < GET_MODE_SIZE (GET_MODE (y))) abort (); - z = gen_lowpart (GET_MODE (x), z); + if (GET_MODE_SIZE (GET_MODE (x)) > UNITS_PER_WORD + && (GET_MODE_SIZE (GET_MODE (x)) + > GET_MODE_SIZE (GET_MODE (z)))) + { + /* This can occur as a result in invalid + pointer casts, e.g. float f; ... + *(long long int *)&f. + ??? We could emit a warning here, but + without a line number that wouldn't be + very helpful. */ + z = gen_rtx_SUBREG (GET_MODE (x), z, 0); + } + else + z = gen_lowpart (GET_MODE (x), z); } *loc = z; |