Denis Chertykov schrieb: > 2011/6/15 Georg-Johann Lay <a...@gjlay.de>: >> This is a patch that implements some libgcc functions in assembler. >> The functions are used only very seldom but if, they lead to an >> unpleasant waste of resource. For example, some SF functions >> eventually lead to __clz_tab being dragged in (PR29524). >> >> This patch avoids that by straight forward assembler implementation of >> functions that are easy to implement. >> >> Tested without regression. Moreover, I tested functions in some >> self-written code against the old C-implementation. HI/QI functions >> tested for all possible inputs. >> > > Approved for AVR. > May be you need another approval for longlong.h > > Denis.
Committed original Version from http://gcc.gnu.org/ml/gcc-patches/2011-06/msg01200.html together with the following corrigendum: --- config/avr/libgcc.S (Revision 175097) +++ config/avr/libgcc.S (Arbeitskopie) @@ -1241,7 +1241,7 @@ ENDF __bswapdi2 ;; r25:r18 = ashr64 (r25:r18, r17:r16) DEFUN __ashrdi3 push r16 - andi r16, 31 + andi r16, 63 breq 2f 1: asr r25 ror r24 @@ -1263,7 +1263,7 @@ ENDF __ashrdi3 ;; r25:r18 = lshr64 (r25:r18, r17:r16) DEFUN __lshrdi3 push r16 - andi r16, 31 + andi r16, 63 breq 2f 1: lsr r25 ror r24 @@ -1285,7 +1285,7 @@ ENDF __lshrdi3 ;; r25:r18 = ashl64 (r25:r18, r17:r16) DEFUN __ashldi3 push r16 - andi r16, 31 + andi r16, 63 breq 2f 1: lsl r18 rol r19 Johann
