target/mips: Optimize CPU/FPU regnames[] arrays

Since all entries are no more than 4 bytes (including nul
terminator), can save space and pie runtime relocations by
declaring regnames[] as array of 4 const char.

Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210428170410.479308-6-f4bug@amsat.org>

diff --git a/target/mips/cpu.c b/target/mips/cpu.c
index f354d18..ed9552e 100644 (file)
--- a/target/mips/cpu.c
+++ b/target/mips/cpu.c
@@ -35,7 +35,7 @@
 #include "qapi/qapi-commands-machine-target.h"
 #include "fpu_helper.h"
 
-const char * const regnames[32] = {
+const char regnames[32][4] = {
     "r0", "at", "v0", "v1", "a0", "a1", "a2", "a3",
     "t0", "t1", "t2", "t3", "t4", "t5", "t6", "t7",
     "s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7",

diff --git a/target/mips/fpu.c b/target/mips/fpu.c
index 1447dba..c7c487c 100644 (file)
--- a/target/mips/fpu.c
+++ b/target/mips/fpu.c
@@ -17,7 +17,7 @@ const FloatRoundMode ieee_rm[4] = {
     float_round_down
 };
 
-const char * const fregnames[32] = {
+const char fregnames[32][4] = {
     "f0",  "f1",  "f2",  "f3",  "f4",  "f5",  "f6",  "f7",
     "f8",  "f9",  "f10", "f11", "f12", "f13", "f14", "f15",
     "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",

diff --git a/target/mips/internal.h b/target/mips/internal.h
index a8644f7..37f54a8 100644 (file)
--- a/target/mips/internal.h
+++ b/target/mips/internal.h
@@ -71,8 +71,8 @@ struct mips_def_t {
     int32_t SAARP;
 };
 
-extern const char * const regnames[32];
-extern const char * const fregnames[32];
+extern const char regnames[32][4];
+extern const char fregnames[32][4];
 
 extern const struct mips_def_t mips_defs[];
 extern const int mips_defs_number;