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| author | Ulrich Weigand <uweigand@de.ibm.com> | 2003-04-01 17:32:33 +0000 |
|---|---|---|
| committer | Ulrich Weigand <uweigand@gcc.gnu.org> | 2003-04-01 17:32:33 +0000 |
| commit | 7fe317e4eaba64967d11ac62c117c756303a25bd (patch) | |
| tree | 7a3947de3baf25688cea352ef11da4c9c19418a0 /gcc | |
| parent | e1fea6ee0bc2ff70d07e79ab9cf0f545b5ba6b72 (diff) | |
| download | gcc-7fe317e4eaba64967d11ac62c117c756303a25bd.zip gcc-7fe317e4eaba64967d11ac62c117c756303a25bd.tar.gz gcc-7fe317e4eaba64967d11ac62c117c756303a25bd.tar.bz2 | |
s390.c (s390_fixup_clobbered_return_reg): Do nothing if __builtin_return_address was not used.
* config/s390/s390.c (s390_fixup_clobbered_return_reg):
Do nothing if __builtin_return_address was not used.
From-SVN: r65133
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/s390/s390.c | 6 |
2 files changed, 11 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 03b9744..a53b56b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2003-04-01 Ulrich Weigand <uweigand@de.ibm.com> + + * config/s390/s390.c (s390_fixup_clobbered_return_reg): + Do nothing if __builtin_return_address was not used. + Tue Apr 1 18:18:23 CEST 2003 Jan Hubicka <jh@suse.cz> * i386.md (test patterns): Allow memory operand in operand1. diff --git a/gcc/config/s390/s390.c b/gcc/config/s390/s390.c index b1e7c5b..3a6c213 100644 --- a/gcc/config/s390/s390.c +++ b/gcc/config/s390/s390.c @@ -4905,6 +4905,12 @@ s390_fixup_clobbered_return_reg (return_reg) bool replacement_done = 0; rtx insn; + /* If we never called __builtin_return_address, register 14 + might have been used as temp during the prolog; we do + not want to touch those uses. */ + if (!has_hard_reg_initial_val (Pmode, REGNO (return_reg))) + return false; + for (insn = get_insns (); insn; insn = NEXT_INSN (insn)) { rtx reg, off, new_insn; |