Decrease the frequency of FADD/FSUB in favor of FMUL (#77)

* this better matches CPU capabilities since execution ports are usually split 1:1 between fadd and fmul
* the frequency of FSWAP_R decreased from 8 to 4 (it's ASIC-friendly)
* activate IROL_R instruction

src/asm/configuration.asm

@@ -29,16 +29,16 @@ RANDOMX_FREQ_IMUL_RCP EQU 8t
 RANDOMX_FREQ_INEG_R EQU 2t
 RANDOMX_FREQ_IXOR_R EQU 15t
 RANDOMX_FREQ_IXOR_M EQU 5t
-RANDOMX_FREQ_IROR_R EQU 10t
-RANDOMX_FREQ_IROL_R EQU 0t
+RANDOMX_FREQ_IROR_R EQU 8t
+RANDOMX_FREQ_IROL_R EQU 2t
 RANDOMX_FREQ_ISWAP_R EQU 4t
-RANDOMX_FREQ_FSWAP_R EQU 8t
-RANDOMX_FREQ_FADD_R EQU 20t
+RANDOMX_FREQ_FSWAP_R EQU 4t
+RANDOMX_FREQ_FADD_R EQU 16t
 RANDOMX_FREQ_FADD_M EQU 5t
-RANDOMX_FREQ_FSUB_R EQU 20t
+RANDOMX_FREQ_FSUB_R EQU 16t
 RANDOMX_FREQ_FSUB_M EQU 5t
 RANDOMX_FREQ_FSCAL_R EQU 6t
-RANDOMX_FREQ_FMUL_R EQU 20t
+RANDOMX_FREQ_FMUL_R EQU 32t
 RANDOMX_FREQ_FDIV_M EQU 4t
 RANDOMX_FREQ_FSQRT_R EQU 6t
 RANDOMX_FREQ_CBRANCH EQU 16t

src/common.hpp

@@ -61,7 +61,7 @@ namespace randomx {
 	constexpr int wtSum = RANDOMX_FREQ_IADD_RS + RANDOMX_FREQ_IADD_M + RANDOMX_FREQ_ISUB_R + \
 		RANDOMX_FREQ_ISUB_M + RANDOMX_FREQ_IMUL_R + RANDOMX_FREQ_IMUL_M + RANDOMX_FREQ_IMULH_R + \
 		RANDOMX_FREQ_IMULH_M + RANDOMX_FREQ_ISMULH_R + RANDOMX_FREQ_ISMULH_M + RANDOMX_FREQ_IMUL_RCP + \
-		RANDOMX_FREQ_INEG_R + RANDOMX_FREQ_IXOR_R + RANDOMX_FREQ_IXOR_M + RANDOMX_FREQ_IROR_R + RANDOMX_FREQ_ISWAP_R + \
+		RANDOMX_FREQ_INEG_R + RANDOMX_FREQ_IXOR_R + RANDOMX_FREQ_IXOR_M + RANDOMX_FREQ_IROR_R + RANDOMX_FREQ_IROL_R + RANDOMX_FREQ_ISWAP_R + \
 		RANDOMX_FREQ_FSWAP_R + RANDOMX_FREQ_FADD_R + RANDOMX_FREQ_FADD_M + RANDOMX_FREQ_FSUB_R + RANDOMX_FREQ_FSUB_M + \
 		RANDOMX_FREQ_FSCAL_R + RANDOMX_FREQ_FMUL_R + RANDOMX_FREQ_FDIV_M + RANDOMX_FREQ_FSQRT_R + RANDOMX_FREQ_CBRANCH + \
 		RANDOMX_FREQ_CFROUND + RANDOMX_FREQ_ISTORE + RANDOMX_FREQ_NOP;

src/configuration.h

@@ -96,18 +96,18 @@ Total sum of frequencies must be 256
 #define RANDOMX_FREQ_INEG_R         2
 #define RANDOMX_FREQ_IXOR_R        15
 #define RANDOMX_FREQ_IXOR_M         5
-#define RANDOMX_FREQ_IROR_R        10
-#define RANDOMX_FREQ_IROL_R         0
+#define RANDOMX_FREQ_IROR_R         8
+#define RANDOMX_FREQ_IROL_R         2
 #define RANDOMX_FREQ_ISWAP_R        4
 
 //Floating point instructions
-#define RANDOMX_FREQ_FSWAP_R        8
-#define RANDOMX_FREQ_FADD_R        20
+#define RANDOMX_FREQ_FSWAP_R        4
+#define RANDOMX_FREQ_FADD_R        16
 #define RANDOMX_FREQ_FADD_M         5
-#define RANDOMX_FREQ_FSUB_R        20
+#define RANDOMX_FREQ_FSUB_R        16
 #define RANDOMX_FREQ_FSUB_M         5
 #define RANDOMX_FREQ_FSCAL_R        6
-#define RANDOMX_FREQ_FMUL_R        20
+#define RANDOMX_FREQ_FMUL_R        32
 #define RANDOMX_FREQ_FDIV_M         4
 #define RANDOMX_FREQ_FSQRT_R        6