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| author | Richard Henderson | 2021-08-05 19:38:14 +0200 |
|---|---|---|
| committer | Richard Henderson | 2021-09-22 04:36:44 +0200 |
| commit | 81c65ee223ba759c15c11068f9b292a59a900451 (patch) | |
| tree | f378cef2a50fb84cbd16790246eaeac232877db0 /tcg/riscv | |
| parent | hw/core: Make do_unaligned_access noreturn (diff) | |
| download | qemu-81c65ee223ba759c15c11068f9b292a59a900451.tar.gz qemu-81c65ee223ba759c15c11068f9b292a59a900451.tar.xz qemu-81c65ee223ba759c15c11068f9b292a59a900451.zip | |
tcg/riscv: Remove add with zero on user-only memory access
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'tcg/riscv')
| -rw-r--r-- | tcg/riscv/tcg-target.c.inc | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/tcg/riscv/tcg-target.c.inc b/tcg/riscv/tcg-target.c.inc index c16f96b401..dc8d8f1de2 100644 --- a/tcg/riscv/tcg-target.c.inc +++ b/tcg/riscv/tcg-target.c.inc @@ -1130,10 +1130,7 @@ static void tcg_out_qemu_ld(TCGContext *s, const TCGArg *args, bool is_64) tcg_out_ext32u(s, base, addr_regl); addr_regl = base; } - - if (guest_base == 0) { - tcg_out_opc_reg(s, OPC_ADD, base, addr_regl, TCG_REG_ZERO); - } else { + if (guest_base != 0) { tcg_out_opc_reg(s, OPC_ADD, base, TCG_GUEST_BASE_REG, addr_regl); } tcg_out_qemu_ld_direct(s, data_regl, data_regh, base, opc, is_64); @@ -1199,10 +1196,7 @@ static void tcg_out_qemu_st(TCGContext *s, const TCGArg *args, bool is_64) tcg_out_ext32u(s, base, addr_regl); addr_regl = base; } - - if (guest_base == 0) { - tcg_out_opc_reg(s, OPC_ADD, base, addr_regl, TCG_REG_ZERO); - } else { + if (guest_base != 0) { tcg_out_opc_reg(s, OPC_ADD, base, TCG_GUEST_BASE_REG, addr_regl); } tcg_out_qemu_st_direct(s, data_regl, data_regh, base, opc); |