OpenE2K/gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

re PR target/64180 (PowerPC carry bit improvements)

Browse Source 
PR target/64180
	* config/rs6000/rs6000.md (*add<mode>3_internal1): Remove addic
	alternative.

From-SVN: r218592
This commit is contained in:
Segher Boessenkool 2014-12-10 19:32:15 +01:00 committed by Segher Boessenkool
parent 79cdc851c5
commit d262c86cc9
2 changed files with 9 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2014-12-10 Segher Boessenkool <segher@kernel.crashing.org>
PR target/64180
* config/rs6000/rs6000.md (*add<mode>3_internal1): Remove addic
alternative.
2014-12-10 Segher Boessenkool <segher@kernel.crashing.org>
PR target/64180

9
gcc/config/rs6000/rs6000.md
View File

@ -1491,17 +1491,14 @@
}
})
;; Discourage ai/addic because of carry but provide it in an alternative
;; allowing register zero as source.
(define_insn "*add<mode>3_internal1"
[(set (match_operand:GPR 0 "gpc_reg_operand" "=r,r,?r,r")
(plus:GPR (match_operand:GPR 1 "gpc_reg_operand" "%r,b,r,b")
(match_operand:GPR 2 "add_operand" "r,I,I,L")))]
[(set (match_operand:GPR 0 "gpc_reg_operand" "=r,r,r")
(plus:GPR (match_operand:GPR 1 "gpc_reg_operand" "%r,b,b")
(match_operand:GPR 2 "add_operand" "r,I,L")))]
"!DECIMAL_FLOAT_MODE_P (GET_MODE (operands[0])) && !DECIMAL_FLOAT_MODE_P (GET_MODE (operands[1]))"
"@
add %0,%1,%2
addi %0,%1,%2
addic %0,%1,%2
addis %0,%1,%v2"
[(set_attr "type" "add")])