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target-ppc: Clean Up mullw 

Eliminate the unecessary ext32s TCG operation and make the multiplication
operation explicitly 32 bit.

Signed-off-by: Tom Musta <tommusta@gmail.com>
Suggested-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Tom Musta 2014-08-25 14:25:42 -05:00 committed by Alexander Graf
parent 57fca134bb
commit 03039e5ef0
1 changed files with 2 additions and 3 deletions
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target-ppc/translate.c
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@ -1138,9 +1138,8 @@ static void gen_mullw(DisasContext *ctx)
tcg_temp_free(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)]);
tcg_gen_ext32s_tl(cpu_gpr[rD(ctx->opcode)], cpu_gpr[rD(ctx->opcode)]);
tcg_gen_mul_i32(cpu_gpr[rD(ctx->opcode)], cpu_gpr[rA(ctx->opcode)],
cpu_gpr[rB(ctx->opcode)]);
#endif
if (unlikely(Rc(ctx->opcode) != 0))
gen_set_Rc0(ctx, cpu_gpr[rD(ctx->opcode)]);