Make it a bit more clear, what's going on in ia32_emit_x87_binop().

[r22597]

diff --git a/ir/be/ia32/ia32_emitter.c b/ir/be/ia32/ia32_emitter.c
index eb59f35..c4eabd8 100644 (file)
--- a/ir/be/ia32/ia32_emitter.c
+++ b/ir/be/ia32/ia32_emitter.c
@@ -446,12 +446,14 @@ void ia32_emit_x87_binop(const ir_node *node)
                        {
                                const ia32_x87_attr_t *x87_attr = get_ia32_x87_attr_const(node);
                                const arch_register_t *in1      = x87_attr->x87[0];
-                               const arch_register_t *in2      = x87_attr->x87[1];
+                               const arch_register_t *in       = x87_attr->x87[1];
                                const arch_register_t *out      = x87_attr->x87[2];
-                               const arch_register_t *in;
 
-                               in  = out ? ((out == in2) ? in1 : in2) : in2;
-                               out = out ? out : in1;
+                               if (out == NULL) {
+                                       out = in1;
+                               } else if (out == in) {
+                                       in = in1;
+                               }
 
                                be_emit_char('%');
                                be_emit_string(arch_register_get_name(in));