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target-sparc: Remove softint as a TCG global 

The global is only ever read for one insn; we can just as well
use a load from env instead and generate the same code.  This
also allows us to indicate the the associated helpers do not
touch TCG globals.

Tested-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson 2015-08-19 09:58:17 -07:00
parent be72f9fcca
commit e86ceb0d65
2 changed files with 5 additions and 6 deletions
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6
target-sparc/helper.h
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@ -21,9 +21,9 @@ DEF_HELPER_4(ldda_asi, void, env, tl, int, int)
DEF_HELPER_5(ldf_asi, void, env, tl, int, int, int)
DEF_HELPER_FLAGS_5(stf_asi, TCG_CALL_NO_WG, void, env, tl, int, int, int)
DEF_HELPER_FLAGS_5(casx_asi, TCG_CALL_NO_WG, tl, env, tl, tl, tl, i32)
DEF_HELPER_2(set_softint, void, env, i64)
DEF_HELPER_2(clear_softint, void, env, i64)
DEF_HELPER_2(write_softint, void, env, i64)
DEF_HELPER_FLAGS_2(set_softint, TCG_CALL_NO_RWG, void, env, i64)
DEF_HELPER_FLAGS_2(clear_softint, TCG_CALL_NO_RWG, void, env, i64)
DEF_HELPER_FLAGS_2(write_softint, TCG_CALL_NO_RWG, void, env, i64)
DEF_HELPER_FLAGS_2(tick_set_count, TCG_CALL_NO_RWG, void, ptr, i64)
DEF_HELPER_FLAGS_3(tick_get_count, TCG_CALL_NO_WG, i64, env, ptr, int)
DEF_HELPER_FLAGS_2(tick_set_limit, TCG_CALL_NO_RWG, void, ptr, i64)

5
target-sparc/translate.c
View File

@ -57,7 +57,6 @@ static TCGv_i32 cpu_xcc, cpu_asi, cpu_fprs;
static TCGv cpu_gsr;
static TCGv cpu_tick_cmpr, cpu_stick_cmpr, cpu_hstick_cmpr;
static TCGv cpu_hintp, cpu_htba, cpu_hver, cpu_ssr, cpu_ver;
static TCGv_i32 cpu_softint;
#else
static TCGv cpu_wim;
#endif
@ -2754,7 +2753,8 @@ static void disas_sparc_insn(DisasContext * dc, unsigned int insn)
gen_store_gpr(dc, rd, cpu_gsr);
break;
case 0x16: /* Softint */
tcg_gen_ext_i32_tl(cpu_dst, cpu_softint);
tcg_gen_ld32s_tl(cpu_dst, cpu_env,
offsetof(CPUSPARCState, softint));
gen_store_gpr(dc, rd, cpu_dst);
break;
case 0x17: /* Tick compare */
@ -5364,7 +5364,6 @@ void gen_intermediate_code_init(CPUSPARCState *env)
{ &cpu_xcc, offsetof(CPUSPARCState, xcc), "xcc" },
{ &cpu_asi, offsetof(CPUSPARCState, asi), "asi" },
{ &cpu_fprs, offsetof(CPUSPARCState, fprs), "fprs" },
{ &cpu_softint, offsetof(CPUSPARCState, softint), "softint" },
#else
{ &cpu_wim, offsetof(CPUSPARCState, wim), "wim" },
#endif