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| author | Qing Zhao <qing.zhao@oracle.com> | 2022-02-10 16:40:39 +0000 |
|---|---|---|
| committer | Qing Zhao <qing.zhao@oracle.com> | 2022-02-10 16:40:39 +0000 |
| commit | b32305b41dcafc5fb6974c0da3ce2f62251afdbf (patch) | |
| tree | d980bacbac4be2ebd71d4e73221bf47d6a2ef270 /gcc/function.cc | |
| parent | 53fcc46339239c4958e2a15bb9e59274133bbcf7 (diff) | |
| download | gcc-b32305b41dcafc5fb6974c0da3ce2f62251afdbf.zip gcc-b32305b41dcafc5fb6974c0da3ce2f62251afdbf.tar.gz gcc-b32305b41dcafc5fb6974c0da3ce2f62251afdbf.tar.bz2 | |
middle-end: updating the reg use in exit block for -fzero-call-used-regs [PR100775]
In the pass_zero_call_used_regs, when updating dataflow info after adding
the register zeroing sequence in the epilogue of the function, we should
call "df_update_exit_block_uses" to update the register use information in
the exit block to include all the registers that have been zeroed.
2022-02-10 Qing Zhao <qing.zhao@oracle.com>
gcc/ChangeLog:
PR middle-end/100775
* function.cc (gen_call_used_regs_seq): Call
df_update_exit_block_uses when updating df.
gcc/testsuite/ChangeLog:
PR middle-end/100775
* gcc.target/arm/pr100775.c: New test.
Diffstat (limited to 'gcc/function.cc')
| -rw-r--r-- | gcc/function.cc | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/gcc/function.cc b/gcc/function.cc index e1d2565..d5ed51a 100644 --- a/gcc/function.cc +++ b/gcc/function.cc @@ -5941,7 +5941,7 @@ gen_call_used_regs_seq (rtx_insn *ret, unsigned int zero_regs_type) /* Update the data flow information. */ crtl->must_be_zero_on_return |= zeroed_hardregs; - df_set_bb_dirty (EXIT_BLOCK_PTR_FOR_FN (cfun)); + df_update_exit_block_uses (); } } |