After changing this cost from 1 to 3, the performance of spec2006
401 473 416 465 482 can be improved by about 2% on LA664.
Add option '-maddr-reg-reg-cost='.
gcc/ChangeLog:
* config/loongarch/genopts/loongarch.opt.in: Add
option '-maddr-reg-reg-cost='.
* config/loongarch/loongarch-def.cc
(loongarch_rtx_cost_data::loongarch_rtx_cost_data): Initialize
addr_reg_reg_cost to 3.
* config/loongarch/loongarch-opts.cc
(loongarch_target_option_override): If '-maddr-reg-reg-cost='
is not used, set it to the initial value.
* config/loongarch/loongarch-tune.h
(struct loongarch_rtx_cost_data): Add the member
addr_reg_reg_cost and its assignment function to the structure
loongarch_rtx_cost_data.
* config/loongarch/loongarch.cc (loongarch_address_insns):
Use la_addr_reg_reg_cost to set the cost of ADDRESS_REG_REG.
* config/loongarch/loongarch.opt: Regenerate.
* config/loongarch/loongarch.opt.urls: Regenerate.
* doc/invoke.texi: Add description of '-maddr-reg-reg-cost='.
gcc/testsuite/ChangeLog:
* gcc.target/loongarch/const-double-zero-stx.c: Add
'-maddr-reg-reg-cost=1'.
* gcc.target/loongarch/stack-check-alloca-1.c: Likewise.
Change-Id: I8fbf7a6d073b16c7829b1a9a8d239b131d53ab1b
---
gcc/config/loongarch/genopts/loongarch.opt.in | 4 ++++
gcc/config/loongarch/loongarch-def.cc | 1 +
gcc/config/loongarch/loongarch-opts.cc | 3 +++
gcc/config/loongarch/loongarch-tune.h | 7 +++++++
gcc/config/loongarch/loongarch.cc | 2 +-
gcc/config/loongarch/loongarch.opt | 4 ++++
gcc/config/loongarch/loongarch.opt.urls | 3 +++
gcc/doc/invoke.texi | 7 ++++++-
gcc/testsuite/gcc.target/loongarch/const-double-zero-stx.c | 2 +-
gcc/testsuite/gcc.target/loongarch/stack-check-alloca-1.c | 2 +-
10 files changed, 31 insertions(+), 4 deletions(-)
diff --git a/gcc/config/loongarch/genopts/loongarch.opt.in
b/gcc/config/loongarch/genopts/loongarch.opt.in
index 8c292c8600d..39c1545e540 100644
--- a/gcc/config/loongarch/genopts/loongarch.opt.in
+++ b/gcc/config/loongarch/genopts/loongarch.opt.in
@@ -177,6 +177,10 @@ mbranch-cost=
Target RejectNegative Joined UInteger Var(la_branch_cost) Save
-mbranch-cost=COST Set the cost of branches to roughly COST instructions.
+maddr-reg-reg-cost=
+Target RejectNegative Joined UInteger Var(la_addr_reg_reg_cost) Save
+-maddr-reg-reg-cost=COST Set the cost of ADDRESS_REG_REG to the value
calculated by COST.
+
mcheck-zero-division
Target Mask(CHECK_ZERO_DIV) Save
Trap on integer divide by zero.
diff --git a/gcc/config/loongarch/loongarch-def.cc
b/gcc/config/loongarch/loongarch-def.cc
index b0271eb3b9a..5f235a04ef2 100644
--- a/gcc/config/loongarch/loongarch-def.cc
+++ b/gcc/config/loongarch/loongarch-def.cc
@@ -136,6 +136,7 @@ loongarch_rtx_cost_data::loongarch_rtx_cost_data ()
movcf2gr (COSTS_N_INSNS (7)),
movgr2cf (COSTS_N_INSNS (15)),
branch_cost (6),
+ addr_reg_reg_cost (3),
memory_latency (4) {}
/* The following properties cannot be looked up directly using "cpucfg".
diff --git a/gcc/config/loongarch/loongarch-opts.cc
b/gcc/config/loongarch/loongarch-opts.cc
index 36342cc9373..c2a63f75fc2 100644
--- a/gcc/config/loongarch/loongarch-opts.cc
+++ b/gcc/config/loongarch/loongarch-opts.cc
@@ -1010,6 +1010,9 @@ loongarch_target_option_override (struct loongarch_target
*target,
if (!opts_set->x_la_branch_cost)
opts->x_la_branch_cost = loongarch_cost->branch_cost;
+ if (!opts_set->x_la_addr_reg_reg_cost)
+ opts->x_la_addr_reg_reg_cost = loongarch_cost->addr_reg_reg_cost;
+
/* other stuff */
if (ABI_LP64_P (target->abi.base))
opts->x_flag_pcc_struct_return = 0;
diff --git a/gcc/config/loongarch/loongarch-tune.h
b/gcc/config/loongarch/loongarch-tune.h
index e69173ebf79..f7819fe7678 100644
--- a/gcc/config/loongarch/loongarch-tune.h
+++ b/gcc/config/loongarch/loongarch-tune.h
@@ -38,6 +38,7 @@ struct loongarch_rtx_cost_data
unsigned short movcf2gr;
unsigned short movgr2cf;
unsigned short branch_cost;
+ unsigned short addr_reg_reg_cost;
unsigned short memory_latency;
/* Default RTX cost initializer, implemented in loongarch-def.cc. */
@@ -115,6 +116,12 @@ struct loongarch_rtx_cost_data
return *this;
}
+ loongarch_rtx_cost_data addr_reg_reg_cost_ (unsigned short
_addr_reg_reg_cost)
+ {
+ addr_reg_reg_cost = _addr_reg_reg_cost;
+ return *this;
+ }
+
loongarch_rtx_cost_data memory_latency_ (unsigned short _memory_latency)
{
memory_latency = _memory_latency;
diff --git a/gcc/config/loongarch/loongarch.cc
b/gcc/config/loongarch/loongarch.cc
index e9978370e8c..495b62309d6 100644
--- a/gcc/config/loongarch/loongarch.cc
+++ b/gcc/config/loongarch/loongarch.cc
@@ -2383,7 +2383,7 @@ loongarch_address_insns (rtx x, machine_mode mode, bool
might_split_p)
return factor;
case ADDRESS_REG_REG:
- return factor;
+ return factor * la_addr_reg_reg_cost;
case ADDRESS_CONST_INT:
return lsx_p ? 0 : factor;
diff --git a/gcc/config/loongarch/loongarch.opt
b/gcc/config/loongarch/loongarch.opt
index b5a5e3f8f03..4d85cf5a804 100644
--- a/gcc/config/loongarch/loongarch.opt
+++ b/gcc/config/loongarch/loongarch.opt
@@ -185,6 +185,10 @@ mbranch-cost=
Target RejectNegative Joined UInteger Var(la_branch_cost) Save
-mbranch-cost=COST Set the cost of branches to roughly COST instructions.
+maddr-reg-reg-cost=
+Target RejectNegative Joined UInteger Var(la_addr_reg_reg_cost) Save
+-maddr-reg-reg-cost=COST Set the cost of ADDRESS_REG_REG to the value
calculated by COST.
+
mcheck-zero-division
Target Mask(CHECK_ZERO_DIV) Save
Trap on integer divide by zero.
diff --git a/gcc/config/loongarch/loongarch.opt.urls
b/gcc/config/loongarch/loongarch.opt.urls
index 571c504e61d..5f644f6c315 100644
--- a/gcc/config/loongarch/loongarch.opt.urls
+++ b/gcc/config/loongarch/loongarch.opt.urls
@@ -27,6 +27,9 @@ UrlSuffix(gcc/LoongArch-Options.html#index-mabi-2)
mbranch-cost=
UrlSuffix(gcc/LoongArch-Options.html#index-mbranch-cost-2)
+maddr-reg-reg-cost=
+UrlSuffix(gcc/LoongArch-Options.html#index-maddr-reg-reg-cost)
+
mcheck-zero-division
UrlSuffix(gcc/LoongArch-Options.html#index-mcheck-zero-division)
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index bd42a8bc400..22d5015511b 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -1078,7 +1078,8 @@ Objective-C and Objective-C++ Dialects}.
@gccoptlist{-march=@var{arch-type} -mtune=@var{tune-type}
-mabi=@var{base-abi-type}
-mfpu=@var{fpu-type} -msimd=@var{simd-type}
-msoft-float -msingle-float -mdouble-float -mlsx -mno-lsx -mlasx -mno-lasx
--mbranch-cost=@var{n} -mcheck-zero-division -mno-check-zero-division
+-mbranch-cost=@var{n} -maddr-reg-reg-cost=@var{n} -mcheck-zero-division
+-mno-check-zero-division
-mcond-move-int -mno-cond-move-int
-mcond-move-float -mno-cond-move-float
-memcpy -mno-memcpy -mstrict-align -mno-strict-align -G @var{num}
@@ -27654,6 +27655,10 @@ they appear on the GCC driver's command line, deriving
the final / canonicalized
@item -mbranch-cost=@var{n}
Set the cost of branches to roughly @var{n} instructions.
+@opindex maddr-reg-reg-cost
+@item -maddr-reg-reg-cost=@var{n}
+Set the cost of ADDRESS_REG_REG to the value calculated by @var{n}.
+
@opindex mcheck-zero-division
@item -mcheck-zero-division
@itemx -mno-check-zero-divison
diff --git a/gcc/testsuite/gcc.target/loongarch/const-double-zero-stx.c
b/gcc/testsuite/gcc.target/loongarch/const-double-zero-stx.c
index 8fb04be8ff5..fd1bb49ff2c 100644
--- a/gcc/testsuite/gcc.target/loongarch/const-double-zero-stx.c
+++ b/gcc/testsuite/gcc.target/loongarch/const-double-zero-stx.c
@@ -1,5 +1,5 @@
/* { dg-do compile } */
-/* { dg-options "-O2" } */
+/* { dg-options "-O2 -maddr-reg-reg-cost=1" } */
/* { dg-final { scan-assembler-times {stx\..\t\$r0} 2 } } */
extern float arr_f[];
diff --git a/gcc/testsuite/gcc.target/loongarch/stack-check-alloca-1.c
b/gcc/testsuite/gcc.target/loongarch/stack-check-alloca-1.c
index 6ee589c4b3d..6168461b222 100644
--- a/gcc/testsuite/gcc.target/loongarch/stack-check-alloca-1.c
+++ b/gcc/testsuite/gcc.target/loongarch/stack-check-alloca-1.c
@@ -1,5 +1,5 @@
/* { dg-do compile } */
-/* { dg-options "-O2 -fstack-clash-protection --param
stack-clash-protection-guard-size=16" } */
+/* { dg-options "-O2 -fstack-clash-protection --param
stack-clash-protection-guard-size=16 -maddr-reg-reg-cost=1" } */
/* { dg-require-effective-target supports_stack_clash_protection } */
/* { dg-require-effective-target alloca } */
/* { dg-skip-if "" { *-*-* } { "-fstack-check" } { "" } } */
--
2.34.1
