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target/sh4: Simplify 64-bit fp reg-reg move 

We do not need to form full 64-bit quantities in order to perform
the move.  This reduces code expansion on 64-bit hosts.

Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Message-Id: <20170718200255.31647-18-rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Richard Henderson 2017-07-18 10:02:42 -10:00 committed by Aurelien Jarno
parent 4d57fa50d5
commit bdcb373902
1 changed files with 4 additions and 4 deletions
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8
target/sh4/translate.c
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@ -981,10 +981,10 @@ static void _decode_opc(DisasContext * ctx)
case 0xf00c: /* fmov {F,D,X}Rm,{F,D,X}Rn - FPSCR: Nothing */
CHECK_FPU_ENABLED
if (ctx->tbflags & FPSCR_SZ) {
TCGv_i64 fp = tcg_temp_new_i64();
gen_load_fpr64(ctx, fp, XHACK(B7_4));
gen_store_fpr64(ctx, fp, XHACK(B11_8));
tcg_temp_free_i64(fp);
int xsrc = XHACK(B7_4);
int xdst = XHACK(B11_8);
tcg_gen_mov_i32(FREG(xdst), FREG(xsrc));
tcg_gen_mov_i32(FREG(xdst + 1), FREG(xsrc + 1));
} else {
tcg_gen_mov_i32(FREG(B11_8), FREG(B7_4));
}