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| author | Richard Kenner <kenner@gcc.gnu.org> | 1992-12-30 07:02:45 -0500 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1992-12-30 07:02:45 -0500 |
| commit | b5c2c9bc2fdb585b6ff5ea61597e1f57888f1b6c (patch) | |
| tree | 8a2d1b826a69ba11c179b9a78fccb61e0dccd67a /gcc | |
| parent | 94ed39150c54e804fcb829c5e2565bf9905185d3 (diff) | |
| download | gcc-b5c2c9bc2fdb585b6ff5ea61597e1f57888f1b6c.zip gcc-b5c2c9bc2fdb585b6ff5ea61597e1f57888f1b6c.tar.gz gcc-b5c2c9bc2fdb585b6ff5ea61597e1f57888f1b6c.tar.bz2 | |
(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
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/caller-save.c | 12 |
1 files changed, 12 insertions, 0 deletions
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; |