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* [gcc(refs/users/meissner/heads/work081)] Allow extendditi2 on power9
@ 2022-03-11 20:12 Michael Meissner
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From: Michael Meissner @ 2022-03-11 20:12 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:cdfe0ccc4e67643d3a05f303cdbdea339adc7cdc
commit cdfe0ccc4e67643d3a05f303cdbdea339adc7cdc
Author: Michael Meissner <meissner@linux.ibm.com>
Date: Fri Mar 11 15:11:56 2022 -0500
Allow extendditi2 on power9
2022-03-11 Michael Meissner <meissner@linux.ibm.com>
gcc/
PR target/103109
* config/rs6000/vsx.md (extendditi2): Allow extendidti2 to run on
a power9 system.
Diff:
---
gcc/config/rs6000/vsx.md | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/gcc/config/rs6000/vsx.md b/gcc/config/rs6000/vsx.md
index 15bd86dfdfb..7cefd9388fb 100644
--- a/gcc/config/rs6000/vsx.md
+++ b/gcc/config/rs6000/vsx.md
@@ -5031,11 +5031,14 @@
;;
;; If the register allocator prefers to use Altivec registers on power10,
;; generate the vextsd2q instruction.
+;;
+;; We also need the GPR code for power9 so that we can optimize to use the
+;; multiply-add instructions.
(define_insn_and_split "extendditi2"
[(set (match_operand:TI 0 "register_operand" "=r,r,v,v,v")
(sign_extend:TI (match_operand:DI 1 "input_operand" "r,m,b,wa,Z")))
(clobber (reg:DI CA_REGNO))]
- "TARGET_POWERPC64 && TARGET_POWER10"
+ "TARGET_POWERPC64 && TARGET_MADDLD"
"#"
"&& reload_completed"
[(pc)]
@@ -5082,7 +5085,8 @@
gcc_unreachable ();
}
[(set_attr "length" "8")
- (set_attr "type" "shift,load,vecmove,vecperm,load")])
+ (set_attr "type" "shift,load,vecmove,vecperm,load")
+ (set_attr "isa" "p9,p9,p10,p10,p10")])
;; Sign extend 64-bit value in TI reg, word 1, to 128-bit value in TI reg
(define_insn "extendditi2_vector"
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