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| author | Jakub Jelinek <jakub@redhat.com> | 2011-07-28 22:35:12 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2011-07-28 22:35:12 +0200 |
| commit | 4fe249e74807053dac6c37a8e23f43155ecb6ccb (patch) | |
| tree | fb9fac801cacf39ca6eee7caac1c8695a6a8ced3 /gcc/var-tracking.c | |
| parent | 86f98641242b99e49d98708bdad9ffa38396c141 (diff) | |
| download | gcc-4fe249e74807053dac6c37a8e23f43155ecb6ccb.zip gcc-4fe249e74807053dac6c37a8e23f43155ecb6ccb.tar.gz gcc-4fe249e74807053dac6c37a8e23f43155ecb6ccb.tar.bz2 | |
re PR debug/49846 (entryval: missing DW_TAG_GNU_call_site_parameter for stack-passed `double' parameter)
PR debug/49846
* var-tracking.c (prepare_call_arguments): For non-MODE_INT stack
arguments also check if they aren't initialized with a MODE_INT
mode of the same size.
From-SVN: r176892
Diffstat (limited to 'gcc/var-tracking.c')
| -rw-r--r-- | gcc/var-tracking.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/gcc/var-tracking.c b/gcc/var-tracking.c index 56f6983..f67b3f5 100644 --- a/gcc/var-tracking.c +++ b/gcc/var-tracking.c @@ -5777,6 +5777,22 @@ prepare_call_arguments (basic_block bb, rtx insn) val = cselib_lookup (mem, GET_MODE (mem), 0, VOIDmode); if (val && cselib_preserved_value_p (val)) item = gen_rtx_CONCAT (GET_MODE (x), copy_rtx (x), val->val_rtx); + else if (GET_MODE_CLASS (GET_MODE (mem)) != MODE_INT) + { + /* For non-integer stack argument see also if they weren't + initialized by integers. */ + enum machine_mode imode = int_mode_for_mode (GET_MODE (mem)); + if (imode != GET_MODE (mem) && imode != BLKmode) + { + val = cselib_lookup (adjust_address_nv (mem, imode, 0), + imode, 0, VOIDmode); + if (val && cselib_preserved_value_p (val)) + item = gen_rtx_CONCAT (GET_MODE (x), copy_rtx (x), + lowpart_subreg (GET_MODE (x), + val->val_rtx, + imode)); + } + } } if (item) call_arguments = gen_rtx_EXPR_LIST (VOIDmode, item, call_arguments); |