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-rw-r--r--gcc/ChangeLog4
-rw-r--r--gcc/ira.c2
2 files changed, 5 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 281540f..7c1030c 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2012-09-10 Richard Sandiford <rdsandiford@googlemail.com>
+
+ * ira.c (setup_pressure_classes): Handle synonymous classes.
+
2012-09-10 Marc Glisse <marc.glisse@inria.fr>
* tree-ssa-forwprop.c (simplify_bitfield_ref): New function.
diff --git a/gcc/ira.c b/gcc/ira.c
index 691614e..ad0ae0a 100644
--- a/gcc/ira.c
+++ b/gcc/ira.c
@@ -789,7 +789,7 @@ setup_pressure_classes (void)
hard registers and movement between them is costly
(e.g. SPARC FPCC registers). We still should consider it
as a candidate for a pressure class. */
- && alloc_reg_class_subclasses[cl][0] != LIM_REG_CLASSES)
+ && alloc_reg_class_subclasses[cl][0] < cl)
{
/* Check that the moves between any hard registers of the
current class are not more expensive for a legal mode