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Diffstat (limited to 'gcc/doc/tm.texi')
| -rw-r--r-- | gcc/doc/tm.texi | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi index cc33084..9e52042 100644 --- a/gcc/doc/tm.texi +++ b/gcc/doc/tm.texi @@ -4005,6 +4005,14 @@ Note that the elimination of the argument pointer with the stack pointer is specified first since that is the preferred elimination. @end defmac +@defmac RELOAD_ELIMINABLE_REGS +Like @code{ELIMINABLE_REGS}, but only used in the old reload framework where +it takes precedence over @code{ELIMINABLE_REGS}. This macro can be useful +during the transition to LRA because there are cases where reload and LRA +disagree on how eliminable registers should be represented. For an example, +see @file{avr.h}. +@end defmac + @deftypefn {Target Hook} bool TARGET_CAN_ELIMINATE (const int @var{from_reg}, const int @var{to_reg}) This target hook should return @code{true} if the compiler is allowed to try to replace register number @var{from_reg} with register number |