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| author | bstarynk <bstarynk@138bc75d-0d04-0410-961f-82ee72b054a4> | 2009-09-04 05:40:11 +0000 |
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| committer | bstarynk <bstarynk@138bc75d-0d04-0410-961f-82ee72b054a4> | 2009-09-04 05:40:11 +0000 |
| commit | 165d2ce0a5427c51202d3e702d20bdbdf6d625ea (patch) | |
| tree | a8bc624f9bfeec35dfd20a2cacaf4168a9fa3fcd /gcc/ira.c | |
| parent | 549e19e97f2eb0a5843f07f08cc57a1166aba3e2 (diff) | |
| download | gcc-165d2ce0a5427c51202d3e702d20bdbdf6d625ea.tar.gz | |
2009-09-04 Basile Starynkevitch <basile@starynkevitch.net>
MELT branch merged with trunk rev 151402
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/melt-branch@151409 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/ira.c')
| -rw-r--r-- | gcc/ira.c | 14 |
1 files changed, 1 insertions, 13 deletions
diff --git a/gcc/ira.c b/gcc/ira.c index b960f769534..b9b10dc9d3c 100644 --- a/gcc/ira.c +++ b/gcc/ira.c @@ -2384,21 +2384,9 @@ update_equiv_regs (void) /* We only handle the case of a pseudo register being set once, or always to the same value. */ - /* ??? The mn10200 port breaks if we add equivalences for - values that need an ADDRESS_REGS register and set them equivalent - to a MEM of a pseudo. The actual problem is in the over-conservative - handling of INPADDR_ADDRESS / INPUT_ADDRESS / INPUT triples in - calculate_needs, but we traditionally work around this problem - here by rejecting equivalences when the destination is in a register - that's likely spilled. This is fragile, of course, since the - preferred class of a pseudo depends on all instructions that set - or use it. */ - if (!REG_P (dest) || (regno = REGNO (dest)) < FIRST_PSEUDO_REGISTER - || reg_equiv[regno].init_insns == const0_rtx - || (CLASS_LIKELY_SPILLED_P (reg_preferred_class (regno)) - && MEM_P (src) && ! reg_equiv[regno].is_arg_equivalence)) + || reg_equiv[regno].init_insns == const0_rtx) { /* This might be setting a SUBREG of a pseudo, a pseudo that is also set somewhere else to a constant. */ |