From: Claudiu Zissulescu <[email protected]>
An update on how the instructions are scheduled for HS processor.
Ok to apply?
Claudiu
---
gcc/config/arc/arcHS.md | 21 +++++++++++++++------
1 file changed, 15 insertions(+), 6 deletions(-)
diff --git a/gcc/config/arc/arcHS.md b/gcc/config/arc/arcHS.md
index d49b90c4970..5c1ab5413ab 100644
--- a/gcc/config/arc/arcHS.md
+++ b/gcc/config/arc/arcHS.md
@@ -35,12 +35,14 @@
(eq_attr "type" "store"))
"hs_issue+hs_ld_st")
-(define_insn_reservation "hs_alu0" 2
+;; Advanced ALU
+(define_insn_reservation "hs_alu0" 4
(and (match_test "TARGET_HS")
(eq_attr "tune" "none")
(eq_attr "type" "cc_arith, two_cycle_core, shift, lr, sr"))
- "hs_issue+x1,x2")
+ "hs_issue+x1,x2, nothing*2")
+;; Basic ALU
(define_insn_reservation "hs_alu1" 4
(and (match_test "TARGET_HS")
(eq_attr "tune" "none")
@@ -54,19 +56,26 @@
(eq_attr "type" "div_rem"))
"hs_issue+divrem_hs, (divrem_hs)*12")
-(define_insn_reservation "hs_mul" 3
+(define_insn_reservation "hs_mul" 4
(and (match_test "TARGET_HS")
(eq_attr "tune" "none")
(eq_attr "type" "mul16_em, multi, umulti"))
"hs_issue+mul_hs, nothing*3")
-;; BYPASS EALU ->
+;; BYPASS Advanced ALU ->
(define_bypass 1 "hs_alu0" "hs_divrem")
(define_bypass 1 "hs_alu0" "hs_mul")
+(define_bypass 2 "hs_alu0" "hs_alu0")
+(define_bypass 1 "hs_alu0" "hs_alu1")
+(define_bypass 1 "hs_alu0" "hs_data_load")
+(define_bypass 1 "hs_alu0" "hs_data_store" "store_data_bypass_p")
+(define_bypass 2 "hs_alu0" "hs_data_store")
-;; BYPASS BALU ->
+;; BYPASS Basic ALU ->
(define_bypass 1 "hs_alu1" "hs_alu1")
(define_bypass 1 "hs_alu1" "hs_data_store" "store_data_bypass_p")
+(define_bypass 3 "hs_alu1" "hs_mul")
+(define_bypass 3 "hs_alu1" "hs_divrem")
;; BYPASS LD ->
(define_bypass 1 "hs_data_load" "hs_alu1")
@@ -76,7 +85,7 @@
(define_bypass 1 "hs_data_load" "hs_data_store" "store_data_bypass_p")
;; BYPASS MPY ->
-;;(define_bypass 3 "hs_mul" "hs_mul")
+(define_bypass 3 "hs_mul" "hs_mul")
(define_bypass 1 "hs_mul" "hs_alu1")
(define_bypass 3 "hs_mul" "hs_divrem")
(define_bypass 1 "hs_mul" "hs_data_store" "store_data_bypass_p")
--
2.14.3
