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target/sh4: optimize gen_store_fpr64 

Using extr and avoiding intermediate temps.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Aurelien Jarno 2017-05-01 23:20:43 +02:00
parent b3995c23ed
commit 58d2a9aef4
1 changed files with 1 additions and 7 deletions
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8
target/sh4/translate.c
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@ -305,13 +305,7 @@ static inline void gen_load_fpr64(TCGv_i64 t, int reg)
static inline void gen_store_fpr64 (TCGv_i64 t, int reg)
{
TCGv_i32 tmp = tcg_temp_new_i32();
tcg_gen_extrl_i64_i32(tmp, t);
tcg_gen_mov_i32(cpu_fregs[reg + 1], tmp);
tcg_gen_shri_i64(t, t, 32);
tcg_gen_extrl_i64_i32(tmp, t);
tcg_gen_mov_i32(cpu_fregs[reg], tmp);
tcg_temp_free_i32(tmp);
tcg_gen_extr_i64_i32(cpu_fregs[reg + 1], cpu_fregs[reg], t);
}
#define B3_0 (ctx->opcode & 0xf)