diff options
| author | spark <spark@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-07-05 23:44:44 +0000 |
|---|---|---|
| committer | spark <spark@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-07-05 23:44:44 +0000 |
| commit | 37ad331865e3a7d269f5236df4e7c1aea72fedd0 (patch) | |
| tree | 28228c38feeee42fd8a1f3ffb190fb8e777dcee4 /gcc/df-scan.c | |
| parent | 2e5b424c063f4421d2589cea2e13a0f0fc25ffff (diff) | |
| download | gcc-37ad331865e3a7d269f5236df4e7c1aea72fedd0.tar.gz | |
2007-07-05 Seongbae Park <seongbae.park@gmail.com>
PR rtl-optimization/32475
* df-scan.c (df_def_record_1): Add a use of the stack pointer
for every definition of the stack pointer.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@126391 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/df-scan.c')
| -rw-r--r-- | gcc/df-scan.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/df-scan.c b/gcc/df-scan.c index 61147be59fc..4a8a1be00b1 100644 --- a/gcc/df-scan.c +++ b/gcc/df-scan.c @@ -2763,6 +2763,12 @@ df_def_record_1 (struct df_collection_rec *collection_rec, || (GET_CODE (dst) == SUBREG && REG_P (SUBREG_REG (dst)))) df_ref_record (collection_rec, dst, loc, bb, insn, DF_REF_REG_DEF, flags); + + /* We want to keep sp alive everywhere - by making all + writes to sp also use of sp. */ + if (REG_P (dst) && REGNO (dst) == STACK_POINTER_REGNUM) + df_ref_record (collection_rec, + dst, NULL, bb, insn, DF_REF_REG_USE, flags); } |