Implement binary emitter for ia32 bt.

diff --git a/ir/be/ia32/ia32_emitter.c b/ir/be/ia32/ia32_emitter.c
index e4a62ce..b561b32 100644 (file)
--- a/ir/be/ia32/ia32_emitter.c
+++ b/ir/be/ia32/ia32_emitter.c
@@ -2520,6 +2520,25 @@ static void bemit_bswap(ir_node const *const node)
        bemit_modru(arch_get_irn_register_out(node, pn_ia32_Bswap_res), 1);
 }
 
+static void bemit_bt(ir_node const *const node)
+{
+       bemit8(0x0F);
+       arch_register_t const *const lreg  = arch_get_irn_register_in(node, n_ia32_Bt_left);
+       ir_node         const *const right = get_irn_n(node, n_ia32_Bt_right);
+       if (is_ia32_Immediate(right)) {
+               ia32_immediate_attr_t const *const attr   = get_ia32_immediate_attr_const(right);
+               int                          const offset = attr->offset;
+               assert(!attr->symconst);
+               assert(get_signed_imm_size(offset) == 1);
+               bemit8(0xBA);
+               bemit_modru(lreg, 4);
+               bemit8(offset);
+       } else {
+               bemit8(0xA3);
+               bemit_modrr(lreg, arch_get_irn_register(right));
+       }
+}
+
 static void bemit_cmovcc(const ir_node *node)
 {
        const ia32_attr_t     *attr         = get_ia32_attr_const(node);
@@ -3620,6 +3639,7 @@ static void ia32_register_binary_emitters(void)
        register_emitter(op_ia32_Bsf,           bemit_bsf);
        register_emitter(op_ia32_Bsr,           bemit_bsr);
        register_emitter(op_ia32_Bswap,         bemit_bswap);
+       register_emitter(op_ia32_Bt,            bemit_bt);
        register_emitter(op_ia32_CMovcc,        bemit_cmovcc);
        register_emitter(op_ia32_Call,          bemit_call);
        register_emitter(op_ia32_Cltd,          bemit_cltd);