1 files changed, 26 insertions, 0 deletions

diff --git a/recipes-devtools/gcc/gcc-4.5/linaro/gcc-4.5-linaro-r99413.patch b/recipes-devtools/gcc/gcc-4.5/linaro/gcc-4.5-linaro-r99413.patch
new file mode 100644
index 0000000000..3f873e7fe6
--- /dev/null
+++ b/recipes-devtools/gcc/gcc-4.5/linaro/gcc-4.5-linaro-r99413.patch
@@ -0,0 +1,26 @@
+2010-10-13  Chung-Lin Tang  <cltang@codesourcery.com>
+
+        Backport from mainline:
+
+        2010-04-20  James E. Wilson  <wilson@codesourcery.com>
+
+        gcc/
+        PR rtl-optimization/43520
+        * ira-lives.c (ira_implicitly_set_insn_hard_regs): Exclude classes with
+        zero available registers.
+
+=== modified file 'gcc/ira-lives.c'
+Index: gcc-4.5/gcc/ira-lives.c
+===================================================================
+--- gcc-4.5.orig/gcc/ira-lives.c
++++ gcc-4.5/gcc/ira-lives.c
+@@ -805,6 +805,9 @@ ira_implicitly_set_insn_hard_regs (HARD_
+                        ? GENERAL_REGS
+                        : REG_CLASS_FROM_CONSTRAINT (c, p));
+                  if (cl != NO_REGS
++                     /* There is no register pressure problem if all of the
++                        regs in this class are fixed.  */
++                     && ira_available_class_regs[cl] != 0
+                      && (ira_available_class_regs[cl]
+                          <= ira_reg_class_nregs[cl][mode]))
+                    IOR_HARD_REG_SET (*set, reg_class_contents[cl]);