From 0e7d9243fcf3926564aebe56dca364090fd55f55 Mon Sep 17 00:00:00 2001
From: Sebastian Buchwald <Sebastian.Buchwald@kit.edu>
Date: Thu, 15 Jan 2009 12:07:10 +0000
Subject: [PATCH] PBQP transformer doesn't support Mux nodes with constant
 values.

[r25205]
---
 ir/be/ia32/bearch_ia32.c | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/ir/be/ia32/bearch_ia32.c b/ir/be/ia32/bearch_ia32.c
index 96dce9154..fbeb4c4bb 100644
--- a/ir/be/ia32/bearch_ia32.c
+++ b/ir/be/ia32/bearch_ia32.c
@@ -2249,8 +2249,22 @@ static int ia32_is_mux_allowed(ir_node *sel, ir_node *phi_list, int i, int j)
 
 			if (mode_is_float(mode)) {
 				/* always support Mux(!float, C1, C2) */
-				if (is_Const(t) && is_Const(f) && !mode_is_float(get_irn_mode(cl)))
-					continue;
+				if (is_Const(t) && is_Const(f) &&
+						!mode_is_float(get_irn_mode(cl))) {
+					switch (be_transformer) {
+						case TRANSFORMER_DEFAULT:
+							/* always support Mux(!float, C1, C2) */
+							continue;
+#ifdef FIRM_GRGEN_BE
+						case TRANSFORMER_PBQP:
+						case TRANSFORMER_RAND:
+							/* no support for Mux(*, C1, C2) */
+							return 0;
+#endif
+						default:
+							panic("invalid transformer");
+					}
+				}
 				/* only abs or nabs supported */
 				if (! psi_is_Abs_or_Nabs(cmp, sel, t, f))
 					return 0;
-- 
2.20.1