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| author | Richard Henderson <rth@redhat.com> | 2002-01-03 23:19:19 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2002-01-03 23:19:19 -0800 |
| commit | 1eaea05433cd21e35d5b544e2215cdb7bcb389be (patch) | |
| tree | 043aea56a2a0e4e0f5f56625ff101db2e020f2d8 /gcc/local-alloc.c | |
| parent | 0cc5f812236a618e6ff2d4f504ff442f0b80d06f (diff) | |
| download | gcc-1eaea05433cd21e35d5b544e2215cdb7bcb389be.tar.gz | |
* local-alloc.c (function_invariant_p): Update commentary.
From-SVN: r48530
Diffstat (limited to 'gcc/local-alloc.c')
| -rw-r--r-- | gcc/local-alloc.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/gcc/local-alloc.c b/gcc/local-alloc.c index e66761f3c7a..1a6e3cf97fb 100644 --- a/gcc/local-alloc.c +++ b/gcc/local-alloc.c @@ -1,6 +1,6 @@ /* Allocate registers within a basic block, for GNU compiler. Copyright (C) 1987, 1988, 1991, 1993, 1994, 1995, 1996, 1997, 1998, - 1999, 2000, 2001 Free Software Foundation, Inc. + 1999, 2000, 2001, 2002 Free Software Foundation, Inc. This file is part of GCC. @@ -779,6 +779,12 @@ memref_used_between_p (memref, start, end) } /* Return nonzero if the rtx X is invariant over the current function. */ +/* ??? Actually, the places this is used in reload expect exactly what + is tested here, and not everything that is function invariant. In + particular, the frame pointer and arg pointer are special cased; + pic_offset_table_rtx is not, and this will cause aborts when we + go to spill these things to memory. */ + int function_invariant_p (x) rtx x; |