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| author | David S. Miller <davem@redhat.com> | 2002-05-23 08:22:05 -0700 |
|---|---|---|
| committer | David S. Miller <davem@gcc.gnu.org> | 2002-05-23 08:22:05 -0700 |
| commit | 9547983155087b81454e9149ad37c2945f8137b9 (patch) | |
| tree | 40fccab8e687849f2b4ac8156c613c1dd0531a4a /gcc/toplev.c | |
| parent | a97d1398381199317a5627d7a24e407284ef1e2e (diff) | |
| download | gcc-9547983155087b81454e9149ad37c2945f8137b9.zip gcc-9547983155087b81454e9149ad37c2945f8137b9.tar.gz gcc-9547983155087b81454e9149ad37c2945f8137b9.tar.bz2 | |
basic-block.h (CLEANUP_NO_INSN_DEL): Define it.
2002-05-23 David S. Miller <davem@redhat.com>
* basic-block.h (CLEANUP_NO_INSN_DEL): Define it.
* cfgcleanup.c (cleanup_cfg): If it is set do not
attempt to delete trivially dead insns.
* except.c (finish_eh_generation): Pass it to cleanup_cfg.
* toplev.c (rest_of_compilation): Document non-trivial aspect
the RTL before optimize_save_area_alloca is run.
From-SVN: r53789
Diffstat (limited to 'gcc/toplev.c')
| -rw-r--r-- | gcc/toplev.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/gcc/toplev.c b/gcc/toplev.c index fc4f658..bb6a448 100644 --- a/gcc/toplev.c +++ b/gcc/toplev.c @@ -2573,7 +2573,10 @@ rest_of_compilation (decl) unshare_all_rtl (current_function_decl, insns); #ifdef SETJMP_VIA_SAVE_AREA - /* This must be performed before virtual register instantiation. */ + /* This must be performed before virtual register instantiation. + Please be aware the everything in the compiler that can look + at the RTL up to this point must understand that REG_SAVE_AREA + is just like a use of the REG contained inside. */ if (current_function_calls_alloca) optimize_save_area_alloca (insns); #endif |