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| author | Steven Bosscher <steven@gcc.gnu.org> | 2012-12-05 23:16:52 +0000 |
|---|---|---|
| committer | Steven Bosscher <steven@gcc.gnu.org> | 2012-12-05 23:16:52 +0000 |
| commit | aeb9f7cf3ce55e65fb9f435702e20c7c3f37d7e5 (patch) | |
| tree | 7daa076305a95e822e50b52025fa432bc497750f /gcc/regmove.c | |
| parent | 833fe7dadc06faaeefb7812a69dcc9a178543184 (diff) | |
| download | gcc-aeb9f7cf3ce55e65fb9f435702e20c7c3f37d7e5.zip gcc-aeb9f7cf3ce55e65fb9f435702e20c7c3f37d7e5.tar.gz gcc-aeb9f7cf3ce55e65fb9f435702e20c7c3f37d7e5.tar.bz2 | |
tm.texi.in (TARGET_CLASS_LIKELY_SPILLED_P): Update documentation.
* doc/tm.texi.in (TARGET_CLASS_LIKELY_SPILLED_P): Update documentation.
* doc/tm.texi: Regenerate.
* regs.h (REG_LIVE_LENGTH): Update comments to not refer to no longer
existing files global.c and local-alloc.c.
* regmove.c (copy_src_to_dest): Likewise.
* function.h (struct rtl_data): Likewise.
* ira-color.c (allocno_priority_compare_func): Likewise.
* regstat.c (regstat_compute_ri): Likewise.
* config/epiphany/epiphany.h, config/vax/vax.h, config/cris/cris.h,
config/h8300/h8300.h, config/alpha/alpha.h, config/sparc/sparc.h,
config/rs6000/rs6000.h, config/pdp11/pdp11.h, config/pa/pa.h,
config/v850/v850.h, config/mn10300/mn10300.h, config/m32r/m32r.h,
config/i386/i386.h, config/mcore/mcore.h, config/sh/sh.h,
config/arm/arm.h (REGNO_OK_FOR_BASE_P): Likewise.
From-SVN: r194229
Diffstat (limited to 'gcc/regmove.c')
| -rw-r--r-- | gcc/regmove.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/gcc/regmove.c b/gcc/regmove.c index 29f6e65..8dc2d54 100644 --- a/gcc/regmove.c +++ b/gcc/regmove.c @@ -616,10 +616,10 @@ copy_src_to_dest (rtx insn, rtx src, rtx dest) int src_regno; int dest_regno; - /* A REG_LIVE_LENGTH of -1 indicates the register is equivalent to a constant - or memory location and is used infrequently; a REG_LIVE_LENGTH of -2 is - parameter when there is no frame pointer that is not allocated a register. - For now, we just reject them, rather than incrementing the live length. */ + /* A REG_LIVE_LENGTH of -1 indicates the register must not go into + a hard register, e.g. because it crosses as setjmp. See the + comment in regstat.c:regstat_bb_compute_ri. Don't try to apply + any transformations to such regs. */ if (REG_P (src) && REG_LIVE_LENGTH (REGNO (src)) > 0 |