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authorvmakarov <vmakarov@138bc75d-0d04-0410-961f-82ee72b054a4>2009-09-03 18:33:25 +0000
committervmakarov <vmakarov@138bc75d-0d04-0410-961f-82ee72b054a4>2009-09-03 18:33:25 +0000
commitffca81e8e5cfaa90b64ce16734433fce304e9c80 (patch)
treee27c07f57199ff5f91cca9b2886d35f348e9bc06 /gcc/ira.c
parent1602764e229df36b9eec13b6bb88ed2a27f29fb0 (diff)
downloadgcc-ffca81e8e5cfaa90b64ce16734433fce304e9c80.tar.gz
2009-09-03 Vladimir Makarov <vmakarov@redhat.com>
PR bootstrap/41241 * ira.c (update_equiv_reg): Remove check on class likely spill. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@151388 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/ira.c')
-rw-r--r--gcc/ira.c14
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. */