try to avoid creation of float Psis

[r15100]

diff --git a/ir/be/ia32/bearch_ia32.c b/ir/be/ia32/bearch_ia32.c
index b097166..b83bffe 100644 (file)
--- a/ir/be/ia32/bearch_ia32.c
+++ b/ir/be/ia32/bearch_ia32.c
@@ -1877,19 +1877,24 @@ static int ia32_is_psi_allowed(ir_node *sel, ir_node *phi_list, int i, int j)
        (void)i;
        (void)j;
 
-/* we don't want long long and floating point Psi */
-#define IS_BAD_PSI_MODE(mode) (mode_is_float(mode) || get_mode_size_bits(mode) > 32)
+       if(is_Proj(sel)) {
+               ir_node *pred = get_Proj_pred(sel);
+               if(is_Cmp(pred)) {
+                       ir_node *left     = get_Cmp_left(pred);
+                       ir_mode *cmp_mode = get_irn_mode(left);
+                       if(mode_is_float(cmp_mode))
+                               return 0;
+               }
+       }
 
        /* check the Phi nodes */
        for (phi = phi_list; phi; phi = get_irn_link(phi)) {
                ir_mode *mode = get_irn_mode(phi);
 
-               if (IS_BAD_PSI_MODE(mode))
+               if (mode_is_float(mode) || get_mode_size_bits(mode) > 32)
                        return 0;
        }
 
-#undef IS_BAD_PSI_MODE
-
        return 1;
 }