From: Paolo Bonzini <pbonzini@redhat.com>
Date: Fri, 26 Aug 2022 21:15:33 +0000 (+0200)
Subject: target/i386: do not use MOVL to move data between SSE registers
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=3dd116e32e8624dcfa966570a7806e92e19dc380;p=qemu.git

target/i386: do not use MOVL to move data between SSE registers

Write down explicitly the load/store sequence.

Extracted from a patch by Paul Brook <paul@nowt.org>.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---

diff --git a/target/i386/tcg/translate.c b/target/i386/tcg/translate.c
index b7972f0ff5..3237c1d8f9 100644
--- a/target/i386/tcg/translate.c
+++ b/target/i386/tcg/translate.c
@@ -3295,8 +3295,10 @@ static void gen_sse(CPUX86State *env, DisasContext *s, int b,
                                 offsetof(CPUX86State, xmm_regs[reg].ZMM_L(3)));
             } else {
                 rm = (modrm & 7) | REX_B(s);
-                gen_op_movl(s, offsetof(CPUX86State, xmm_regs[reg].ZMM_L(0)),
-                            offsetof(CPUX86State,xmm_regs[rm].ZMM_L(0)));
+                tcg_gen_ld_i32(s->tmp2_i32, cpu_env,
+                               offsetof(CPUX86State, xmm_regs[rm].ZMM_L(0)));
+                tcg_gen_st_i32(s->tmp2_i32, cpu_env,
+                               offsetof(CPUX86State, xmm_regs[reg].ZMM_L(0)));
             }
             break;
         case 0x310: /* movsd xmm, ea */