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| author | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 1999-08-31 22:48:58 +0000 |
|---|---|---|
| committer | law <law@138bc75d-0d04-0410-961f-82ee72b054a4> | 1999-08-31 22:48:58 +0000 |
| commit | 78690da30420a0a57cf2a50c24cb0ced9e410d8d (patch) | |
| tree | 5939ebfd2ec6fdb99ee8a5d2b7da426f50b58c8a /gcc/cse.c | |
| parent | 82575fa702c5782ac79aad4b5d7c86b597bc71b0 (diff) | |
| download | gcc-78690da30420a0a57cf2a50c24cb0ced9e410d8d.tar.gz | |
* cse.c (delete_trivially_dead_insns): Do not delete stores to
the internal_arg_pointer.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@29017 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/cse.c')
| -rw-r--r-- | gcc/cse.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/gcc/cse.c b/gcc/cse.c index 6c7aef31ecd..68fe7b04a92 100644 --- a/gcc/cse.c +++ b/gcc/cse.c @@ -9191,7 +9191,13 @@ delete_trivially_dead_insns (insns, nreg) else if (GET_CODE (SET_DEST (PATTERN (insn))) != REG || REGNO (SET_DEST (PATTERN (insn))) < FIRST_PSEUDO_REGISTER || counts[REGNO (SET_DEST (PATTERN (insn)))] != 0 - || side_effects_p (SET_SRC (PATTERN (insn)))) + || side_effects_p (SET_SRC (PATTERN (insn))) + /* An ADDRESSOF expression can turn into a use of the + internal arg pointer, so always consider the + internal arg pointer live. If it is truly dead, + flow will delete the initializing insn. */ + || (SET_DEST (PATTERN (insn)) + == current_function_internal_arg_pointer)) live_insn = 1; } else if (GET_CODE (PATTERN (insn)) == PARALLEL) |