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| author | James Van Artsdalen <jrv@gnu.org> | 1992-04-21 05:40:51 +0000 |
|---|---|---|
| committer | James Van Artsdalen <jrv@gnu.org> | 1992-04-21 05:40:51 +0000 |
| commit | c572e5ba687d4e4c7c380e47750ead7c84a8ef39 (patch) | |
| tree | 1e418d77f48b5851e28606eae9aadd75114b51ab /gcc/emit-rtl.c | |
| parent | 5944b57e254405218515bf28f3b1a06aa711083e (diff) | |
| download | gcc-c572e5ba687d4e4c7c380e47750ead7c84a8ef39.zip gcc-c572e5ba687d4e4c7c380e47750ead7c84a8ef39.tar.gz gcc-c572e5ba687d4e4c7c380e47750ead7c84a8ef39.tar.bz2 | |
*** empty log message ***
From-SVN: r808
Diffstat (limited to 'gcc/emit-rtl.c')
| -rw-r--r-- | gcc/emit-rtl.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/gcc/emit-rtl.c b/gcc/emit-rtl.c index 00945c8..ad8089b 100644 --- a/gcc/emit-rtl.c +++ b/gcc/emit-rtl.c @@ -1516,6 +1516,23 @@ prev_label (insn) } #ifdef HAVE_cc0 +/* INSN uses CC0 and is being moved into a delay slot. Set up REG_CC_SETTER + and REG_CC_USER notes so we can find it. */ + +void +link_cc0_insns (insn) + rtx insn; +{ + rtx user = next_nonnote_insn (insn); + + if (GET_CODE (user) == INSN && GET_CODE (PATTERN (user)) == SEQUENCE) + user = XVECEXP (PATTERN (user), 0, 0); + + REG_NOTES (user) = gen_rtx (INSN_LIST, REG_CC_SETTER, insn, + REG_NOTES (user)); + REG_NOTES (insn) = gen_rtx (INSN_LIST, REG_CC_USER, user, REG_NOTES (insn)); +} + /* Return the next insn that uses CC0 after INSN, which is assumed to set it. This is the inverse of prev_cc0_setter (i.e., prev_cc0_setter applied to the result of this function should yield INSN). |