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[Qemu-devel] [PULL 21/31] target/sh4: Simplify 64-bit fp reg-reg move
From: |
Aurelien Jarno |
Subject: |
[Qemu-devel] [PULL 21/31] target/sh4: Simplify 64-bit fp reg-reg move |
Date: |
Tue, 18 Jul 2017 23:50:40 +0200 |
From: Richard Henderson <address@hidden>
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 <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Aurelien Jarno <address@hidden>
---
target/sh4/translate.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/target/sh4/translate.c b/target/sh4/translate.c
index 7dfe23d1f4..792a46804b 100644
--- a/target/sh4/translate.c
+++ b/target/sh4/translate.c
@@ -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));
}
--
2.11.0
- [Qemu-devel] [PULL 00/31] target/sh4 queue, Aurelien Jarno, 2017/07/18
- [Qemu-devel] [PULL 14/31] target/sh4: Hoist register bank selection, Aurelien Jarno, 2017/07/18
- [Qemu-devel] [PULL 18/31] target/sh4: Eliminate unused XREG macro, Aurelien Jarno, 2017/07/18
- [Qemu-devel] [PULL 09/31] target/sh4: Adjust TB_FLAG_PENDING_MOVCA, Aurelien Jarno, 2017/07/18
- [Qemu-devel] [PULL 02/31] target/sh4: fix FPU unorderered compare, Aurelien Jarno, 2017/07/18
- [Qemu-devel] [PULL 07/31] target/sh4: Introduce TB_FLAG_ENVFLAGS_MASK, Aurelien Jarno, 2017/07/18
- [Qemu-devel] [PULL 19/31] target/sh4: Merge DREG into fpr64 routines, Aurelien Jarno, 2017/07/18
- [Qemu-devel] [PULL 24/31] target/sh4: Unify code for CHECK_FPU_ENABLED, Aurelien Jarno, 2017/07/18
- [Qemu-devel] [PULL 01/31] target/sh4: do not check for PR bit for fabs instruction, Aurelien Jarno, 2017/07/18
- [Qemu-devel] [PULL 26/31] target/sh4: Introduce CHECK_FPSCR_PR_*, Aurelien Jarno, 2017/07/18
- [Qemu-devel] [PULL 21/31] target/sh4: Simplify 64-bit fp reg-reg move,
Aurelien Jarno <=
- [Qemu-devel] [PULL 06/31] target/sh4: Consolidate end-of-TB tests, Aurelien Jarno, 2017/07/18
- [Qemu-devel] [PULL 13/31] linux-user/sh4: Clean env->flags on signal boundaries, Aurelien Jarno, 2017/07/18
- [Qemu-devel] [PULL 30/31] target/sh4: Implement fsrra, Aurelien Jarno, 2017/07/18
- [Qemu-devel] [PULL 17/31] target/sh4: Hoist fp register bank selection, Aurelien Jarno, 2017/07/18
- [Qemu-devel] [PULL 25/31] target/sh4: Tidy misc illegal insn checks, Aurelien Jarno, 2017/07/18
- [Qemu-devel] [PULL 05/31] target/sh4: return result of fcmp using TCG, Aurelien Jarno, 2017/07/18
- [Qemu-devel] [PULL 31/31] target/sh4: Use tcg_gen_lookup_and_goto_ptr, Aurelien Jarno, 2017/07/18
- [Qemu-devel] [PULL 29/31] target/sh4: Add missing FPSCR.PR == 0 checks, Aurelien Jarno, 2017/07/18
- [Qemu-devel] [PULL 20/31] target/sh4: Load/store Dr as 64-bit quantities, Aurelien Jarno, 2017/07/18
- [Qemu-devel] [PULL 10/31] target/sh4: Handle user-space atomics, Aurelien Jarno, 2017/07/18