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| author | Richard Henderson <rth@redhat.com> | 2004-09-24 12:47:05 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2004-09-24 12:47:05 -0700 |
| commit | 41bf2a8b17267a42615392ad9da37081f59e428c (patch) | |
| tree | 8f489fcd2a7911641c9c974bdfda7d1ab77702cc /gcc/rtl.h | |
| parent | 84f7a28c9b3fe007dbbdd332643cb6858997ba8f (diff) | |
| download | gcc-41bf2a8b17267a42615392ad9da37081f59e428c.zip gcc-41bf2a8b17267a42615392ad9da37081f59e428c.tar.gz gcc-41bf2a8b17267a42615392ad9da37081f59e428c.tar.bz2 | |
re PR middle-end/17503 (quadratic behaviour in invalid_mode_change_p)
PR rtl-opt/17503
* regclass.c (subregs_of_mode): Turn into an htab. Make static.
(som_hash, som_eq): New.
(init_subregs_of_mode, record_subregs_of_mode): New.
(cannot_change_mode_set_regs): Rewrite for htab implementation.
(invalid_mode_change_p): Likewise.
* combine.c (gen_lowpart_for_combine): Use record_subregs_of_mode.
* flow.c (mark_used_regs): Likewise.
(life_analysis): Use init_subregs_of_mode.
* regs.h (subregs_of_mode): Remove.
* rtl.h (init_subregs_of_mode, record_subregs_of_mode): Declare.
From-SVN: r88067
Diffstat (limited to 'gcc/rtl.h')
| -rw-r--r-- | gcc/rtl.h | 2 |
1 files changed, 2 insertions, 0 deletions
@@ -2092,6 +2092,8 @@ extern void regclass (rtx, int, FILE *); extern void reg_scan (rtx, unsigned int, int); extern void reg_scan_update (rtx, rtx, unsigned int); extern void fix_register (const char *, int, int); +extern void init_subregs_of_mode (void); +extern void record_subregs_of_mode (rtx); #ifdef HARD_CONST extern void cannot_change_mode_set_regs (HARD_REG_SET *, enum machine_mode, unsigned int); |