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| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/ira-color.c | 6 |
2 files changed, 11 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index b1bd622..dad8489 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2015-02-20 Vladimir Makarov <vmakarov@redhat.com> + + PR target/64172 + * ira-color.c (color_pass): Prevent splitting multi-register + pseudos. + 2015-02-20 Richard Biener <rguenther@suse.de> PR tree-optimization/65136 diff --git a/gcc/ira-color.c b/gcc/ira-color.c index b77ff69..ff1fe8a 100644 --- a/gcc/ira-color.c +++ b/gcc/ira-color.c @@ -3274,7 +3274,11 @@ color_pass (ira_loop_tree_node_t loop_tree_node) && (loop_tree_node->reg_pressure[pclass] <= ira_class_hard_regs_num[pclass])) || (pic_offset_table_rtx != NULL - && regno == (int) REGNO (pic_offset_table_rtx))) + && regno == (int) REGNO (pic_offset_table_rtx)) + /* Avoid overlapped multi-registers. Moves between them + might result in wrong code generation. */ + || (hard_regno >= 0 + && ira_reg_class_max_nregs[pclass][mode] > 1)) { if (! ALLOCNO_ASSIGNED_P (subloop_allocno)) { |