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target-ppc: optimize mullw and make the code more readable 

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5657 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aurel32 2008-11-09 17:27:11 +00:00
parent bdc4e053d1
commit 1e4c090f7d
1 changed files with 1 additions and 12 deletions
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13
target-ppc/translate.c
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@ -1234,20 +1234,9 @@ GEN_HANDLER(mulhwu, 0x1F, 0x0B, 0x00, 0x00000400, PPC_INTEGER)
/* mullw mullw. */
GEN_HANDLER(mullw, 0x1F, 0x0B, 0x07, 0x00000000, PPC_INTEGER)
{
#if defined(TARGET_PPC64)
TCGv t0, t1;
t0 = tcg_temp_new(TCG_TYPE_TL);
t1 = tcg_temp_new(TCG_TYPE_TL);
tcg_gen_ext32s_tl(t0, cpu_gpr[rA(ctx->opcode)]);
tcg_gen_ext32s_tl(t1, cpu_gpr[rB(ctx->opcode)]);
tcg_gen_mul_tl(t0, t0, t1);
tcg_temp_free(t0);
tcg_gen_ext32s_tl(cpu_gpr[rD(ctx->opcode)], t0);
tcg_temp_free(t1);
#else
tcg_gen_mul_tl(cpu_gpr[rD(ctx->opcode)], cpu_gpr[rA(ctx->opcode)],
cpu_gpr[rB(ctx->opcode)]);
#endif
tcg_gen_ext32s_tl(cpu_gpr[rD(ctx->opcode)], cpu_gpr[rD(ctx->opcode)]);
if (unlikely(Rc(ctx->opcode) != 0))
gen_set_Rc0(ctx, cpu_gpr[rD(ctx->opcode)]);
}