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| author | Richard Henderson <rth@redhat.com> | 2001-07-22 00:10:46 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2001-07-22 00:10:46 -0700 |
| commit | 4e812700ae2d64e2d6058afa4035ea9935c34dff (patch) | |
| tree | 75c278eb80ff1266de00d41678bd02d49309d153 /gcc | |
| parent | f7e105877784980691334a21d667c0200444238a (diff) | |
| download | gcc-4e812700ae2d64e2d6058afa4035ea9935c34dff.zip gcc-4e812700ae2d64e2d6058afa4035ea9935c34dff.tar.gz gcc-4e812700ae2d64e2d6058afa4035ea9935c34dff.tar.bz2 | |
regrename.c (regrename_optimize): Compute nregs for each potential target register.
* regrename.c (regrename_optimize): Compute nregs for each
potential target register.
From-SVN: r44234
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/regrename.c | 8 |
2 files changed, 9 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 66107b1..089d6b7 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2001-07-22 Richard Henderson <rth@redhat.com> + + * regrename.c (regrename_optimize): Compute nregs for each + potential target register. + 2001-07-21 Neil Booth <neil@daikokuya.demon.co.uk> Richard Henderson <rth@redhat.com> diff --git a/gcc/regrename.c b/gcc/regrename.c index b34e7c5..d24a695 100644 --- a/gcc/regrename.c +++ b/gcc/regrename.c @@ -238,8 +238,7 @@ regrename_optimize () struct du_chain *this = all_chains; struct du_chain *tmp, *last; HARD_REG_SET this_unavailable; - int reg = REGNO (*this->loc), treg; - int nregs = HARD_REGNO_NREGS (reg, GET_MODE (*this->loc)); + int reg = REGNO (*this->loc); int i; all_chains = this->next_chain; @@ -287,9 +286,10 @@ regrename_optimize () /* Now potential_regs is a reasonable approximation, let's have a closer look at each register still in there. */ - for (treg = 0; treg < FIRST_PSEUDO_REGISTER; treg++) + for (new_reg = 0; new_reg < FIRST_PSEUDO_REGISTER; new_reg++) { - new_reg = treg; + int nregs = HARD_REGNO_NREGS (new_reg, GET_MODE (*this->loc)); + for (i = nregs - 1; i >= 0; --i) if (TEST_HARD_REG_BIT (this_unavailable, new_reg + i) || fixed_regs[new_reg + i] |