diff options
| author | Richard Sandiford <rdsandiford@googlemail.com> | 2012-01-31 19:11:00 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2012-01-31 19:11:00 +0000 |
| commit | 35aebd56353ee7aec7a17155689dd473ee48ded4 (patch) | |
| tree | 708bf63d2bd26659c34ffa475438467490e03be7 /gcc/reginfo.c | |
| parent | 218e1228c941cf0e1669610eaf33fdf5c010c3c0 (diff) | |
| download | gcc-35aebd56353ee7aec7a17155689dd473ee48ded4.zip gcc-35aebd56353ee7aec7a17155689dd473ee48ded4.tar.gz gcc-35aebd56353ee7aec7a17155689dd473ee48ded4.tar.bz2 | |
function.h (regno_reg_rtx): Adjust comment.
gcc/
* function.h (regno_reg_rtx): Adjust comment.
* reginfo.c (init_reg_modes_target): Only use the previous mode
if it fits within one register. Remove MIPS comment.
From-SVN: r183773
Diffstat (limited to 'gcc/reginfo.c')
| -rw-r--r-- | gcc/reginfo.c | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/gcc/reginfo.c b/gcc/reginfo.c index f6f91a9..6353126 100644 --- a/gcc/reginfo.c +++ b/gcc/reginfo.c @@ -615,13 +615,15 @@ init_reg_modes_target (void) { reg_raw_mode[i] = choose_hard_reg_mode (i, 1, false); - /* If we couldn't find a valid mode, just use the previous mode. - ??? One situation in which we need to do this is on the mips where - HARD_REGNO_NREGS (fpreg, [SD]Fmode) returns 2. Ideally we'd like - to use DF mode for the even registers and VOIDmode for the odd - (for the cpu models where the odd ones are inaccessible). */ + /* If we couldn't find a valid mode, just use the previous mode + if it is suitable, otherwise fall back on word_mode. */ if (reg_raw_mode[i] == VOIDmode) - reg_raw_mode[i] = i == 0 ? word_mode : reg_raw_mode[i-1]; + { + if (i > 0 && hard_regno_nregs[i][reg_raw_mode[i - 1]] == 1) + reg_raw_mode[i] = reg_raw_mode[i - 1]; + else + reg_raw_mode[i] = word_mode; + } } } |