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| author | Alexandre Oliva <aoliva@redhat.com> | 2006-09-11 21:30:07 +0000 |
|---|---|---|
| committer | H.J. Lu <hjl@gcc.gnu.org> | 2006-09-11 14:30:07 -0700 |
| commit | d30673031579bf894eb1dc702ea892e0a32c0741 (patch) | |
| tree | 69d583e945cfa0140121097b07485cc8d04a1563 /gcc/var-tracking.c | |
| parent | b7886f1470bf8748ad22464177463f19f6376a19 (diff) | |
| download | gcc-d30673031579bf894eb1dc702ea892e0a32c0741.zip gcc-d30673031579bf894eb1dc702ea892e0a32c0741.tar.gz gcc-d30673031579bf894eb1dc702ea892e0a32c0741.tar.bz2 | |
re PR target/28672 (Gcc went into infinite loop when building libstdc++)
2006-09-11 Alexandre Oliva <aoliva@redhat.com>
PR target/28672
* var-tracking.c (dump_dataflow_set): Start dumping at
register zero.
(clobber_variable_part): Kill only the variable part in
registers holding it, leaving other variables alone.
From-SVN: r116859
Diffstat (limited to 'gcc/var-tracking.c')
| -rw-r--r-- | gcc/var-tracking.c | 30 |
1 files changed, 27 insertions, 3 deletions
diff --git a/gcc/var-tracking.c b/gcc/var-tracking.c index e33950e..815faca 100644 --- a/gcc/var-tracking.c +++ b/gcc/var-tracking.c @@ -1960,7 +1960,7 @@ dump_dataflow_set (dataflow_set *set) fprintf (dump_file, "Stack adjustment: " HOST_WIDE_INT_PRINT_DEC "\n", set->stack_adjust); - for (i = 1; i < FIRST_PSEUDO_REGISTER; i++) + for (i = 0; i < FIRST_PSEUDO_REGISTER; i++) { if (set->regs[i]) { @@ -2212,8 +2212,32 @@ clobber_variable_part (dataflow_set *set, rtx loc, tree decl, for (node = next; node; node = next) { next = node->next; - if (REG_P (node->loc) && node->loc != loc) - var_reg_delete (set, node->loc, false); + if (node->loc != loc) + { + if (REG_P (node->loc)) + { + attrs anode, anext; + attrs *anextp; + + /* Remove the variable part from the register's + list, but preserve any other variable parts + that might be regarded as live in that same + register. */ + anextp = &set->regs[REGNO (node->loc)]; + for (anode = *anextp; anode; anode = anext) + { + anext = anode->next; + if (anode->decl == decl + && anode->offset == offset) + { + pool_free (attrs_pool, anode); + *anextp = anext; + } + } + } + + delete_variable_part (set, node->loc, decl, offset); + } } } } |