From b5c2c9bc2fdb585b6ff5ea61597e1f57888f1b6c Mon Sep 17 00:00:00 2001 From: Richard Kenner Date: Wed, 30 Dec 1992 07:02:45 -0500 Subject: (setup_save_areas): Don't assign save area for a group if some register in the group has already been assigned an area. From-SVN: r3000 --- gcc/caller-save.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'gcc/caller-save.c') diff --git a/gcc/caller-save.c b/gcc/caller-save.c index f77eda9..6687c66 100644 --- a/gcc/caller-save.c +++ b/gcc/caller-save.c @@ -314,12 +314,24 @@ setup_save_areas (pchanged) for (j = MOVE_MAX / UNITS_PER_WORD; j > 0; j--) { int ok = 1; + int do_save; /* If no mode exists for this size, try another. Also break out if we have already saved this hard register. */ if (regno_save_mode[i][j] == VOIDmode || regno_save_mem[i][1] != 0) continue; + /* See if any register in this group has been saved. */ + do_save = 1; + for (k = 0; k < j; k++) + if (regno_save_mem[i + k][1]) + { + do_save = 0; + break; + } + if (! do_save) + continue; + for (k = 0; k < j; k++) { int regno = i + k; -- cgit v1.1