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| author | Vladimir Makarov <vmakarov@redhat.com> | 2018-11-23 22:00:43 +0000 |
|---|---|---|
| committer | Vladimir Makarov <vmakarov@gcc.gnu.org> | 2018-11-23 22:00:43 +0000 |
| commit | 795a6c676ae5f39d2b9e5e6bca2baed204b7a1f1 (patch) | |
| tree | ce8f90a5d21d348f3e3dff327bd737ef5588ef12 /gcc | |
| parent | 1b8ccb9d55e862b40d978207ee4b44db914acd91 (diff) | |
| download | gcc-795a6c676ae5f39d2b9e5e6bca2baed204b7a1f1.zip gcc-795a6c676ae5f39d2b9e5e6bca2baed204b7a1f1.tar.gz gcc-795a6c676ae5f39d2b9e5e6bca2baed204b7a1f1.tar.bz2 | |
re PR bootstrap/88157 (ICE when building libgo encoding/gob.lo starting with r266385)
2018-11-23 Vladimir Makarov <vmakarov@redhat.com>
PR bootstrap/88157
* ira-costs.c (record_operand_costs): Use bigger hard reg class if
its mode does not fit to the original class.
From-SVN: r266422
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/ira-costs.c | 7 |
2 files changed, 13 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index c377aa5..b0b85ba 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2018-11-23 Vladimir Makarov <vmakarov@redhat.com> + + PR bootstrap/88157 + * ira-costs.c (record_operand_costs): Use bigger hard reg class if + its mode does not fit to the original class. + 2018-11-23 Martin Sebor <msebor@redhat.com> PR tree-optimization/87756 diff --git a/gcc/ira-costs.c b/gcc/ira-costs.c index 6c1d9dd..cfda432 100644 --- a/gcc/ira-costs.c +++ b/gcc/ira-costs.c @@ -1319,6 +1319,13 @@ record_operand_costs (rtx_insn *insn, enum reg_class *pref) bool dead_p = find_regno_note (insn, REG_DEAD, REGNO (src)); hard_reg_class = REGNO_REG_CLASS (other_regno); + /* Target code may return any cost for mode which does not + fit the the hard reg class (e.g. DImode for AREG on + i386). Check this and use a bigger class to get the + right cost. */ + if (! ira_hard_reg_in_set_p (other_regno, mode, + reg_class_contents[hard_reg_class])) + hard_reg_class = ira_pressure_class_translate[hard_reg_class]; i = regno == (int) REGNO (src) ? 1 : 0; for (k = cost_classes_ptr->num - 1; k >= 0; k--) { |