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| author | Bill Schmidt <wschmidt@linux.vnet.ibm.com> | 2014-03-03 20:16:52 +0000 |
|---|---|---|
| committer | William Schmidt <wschmidt@gcc.gnu.org> | 2014-03-03 20:16:52 +0000 |
| commit | b46ed885d9a8c9fb04dfa137c2de1808bfe5ebc5 (patch) | |
| tree | 0d5076a9c035ee0f87be7330bcc24c8bb5383d71 /gcc | |
| parent | a10d35a8ba450c7b83f17c27f43a08e3568c6c57 (diff) | |
| download | gcc-b46ed885d9a8c9fb04dfa137c2de1808bfe5ebc5.zip gcc-b46ed885d9a8c9fb04dfa137c2de1808bfe5ebc5.tar.gz gcc-b46ed885d9a8c9fb04dfa137c2de1808bfe5ebc5.tar.bz2 | |
rs6000.c (rs6000_preferred_reload_class): Disallow reload of PLUS rtx's outside of GENERAL_REGS or BASE_REGS...
2014-03-03 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
* config/rs6000/rs6000.c (rs6000_preferred_reload_class): Disallow
reload of PLUS rtx's outside of GENERAL_REGS or BASE_REGS; relax
constraint on constants to permit them being loaded into
GENERAL_REGS or BASE_REGS.
From-SVN: r208287
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/config/rs6000/rs6000.c | 10 |
2 files changed, 15 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index c40503c..db741fd 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2014-03-03 Bill Schmidt <wschmidt@linux.vnet.ibm.com> + + * config/rs6000/rs6000.c (rs6000_preferred_reload_class): Disallow + reload of PLUS rtx's outside of GENERAL_REGS or BASE_REGS; relax + constraint on constants to permit them being loaded into + GENERAL_REGS or BASE_REGS. + 2014-03-03 Nick Clifton <nickc@redhat.com> * config/rl78/rl78-real.md (cbranchsi4_real_signed): Add diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c index 55e209a..d9e4fc5 100644 --- a/gcc/config/rs6000/rs6000.c +++ b/gcc/config/rs6000/rs6000.c @@ -16751,8 +16751,14 @@ rs6000_preferred_reload_class (rtx x, enum reg_class rclass) && easy_vector_constant (x, mode)) return ALTIVEC_REGS; - if (CONSTANT_P (x) && reg_classes_intersect_p (rclass, FLOAT_REGS)) - return NO_REGS; + if ((CONSTANT_P (x) || GET_CODE (x) == PLUS)) + { + if (reg_class_subset_p (GENERAL_REGS, rclass)) + return GENERAL_REGS; + if (reg_class_subset_p (BASE_REGS, rclass)) + return BASE_REGS; + return NO_REGS; + } if (GET_MODE_CLASS (mode) == MODE_INT && rclass == NON_SPECIAL_REGS) return GENERAL_REGS; |