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-rw-r--r--toolchain/gcc/patches/4.2.0/951-bug_37014.patch76
1 files changed, 76 insertions, 0 deletions
diff --git a/toolchain/gcc/patches/4.2.0/951-bug_37014.patch b/toolchain/gcc/patches/4.2.0/951-bug_37014.patch
new file mode 100644
index 000000000..0da7c2094
--- /dev/null
+++ b/toolchain/gcc/patches/4.2.0/951-bug_37014.patch
@@ -0,0 +1,76 @@
+http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37014
+
+--- a/gcc/dojump.c
++++ b/gcc/dojump.c
+@@ -307,8 +307,6 @@
+ break;
+ }
+
+- case TRUTH_ANDIF_EXPR:
+- case TRUTH_ORIF_EXPR:
+ case COMPOUND_EXPR:
+ /* Lowered by gimplify.c. */
+ gcc_unreachable ();
+@@ -518,6 +516,7 @@
+ if (BRANCH_COST >= 4 || TREE_SIDE_EFFECTS (TREE_OPERAND (exp, 1)))
+ goto normal;
+
++ case TRUTH_ANDIF_EXPR:
+ if (if_false_label == NULL_RTX)
+ {
+ drop_through_label = gen_label_rtx ();
+@@ -538,6 +537,7 @@
+ if (BRANCH_COST >= 4 || TREE_SIDE_EFFECTS (TREE_OPERAND (exp, 1)))
+ goto normal;
+
++ case TRUTH_ORIF_EXPR:
+ if (if_true_label == NULL_RTX)
+ {
+ drop_through_label = gen_label_rtx ();
+--- a/gcc/expr.c
++++ b/gcc/expr.c
+@@ -8466,7 +8466,10 @@
+ /* If no set-flag instruction, must generate a conditional store
+ into a temporary variable. Drop through and handle this
+ like && and ||. */
+-
++ /* Although TRUTH_{AND,OR}IF_EXPR aren't present in GIMPLE, they
++ are occassionally created by folding during expansion. */
++ case TRUTH_ANDIF_EXPR:
++ case TRUTH_ORIF_EXPR:
+ if (! ignore
+ && (target == 0
+ || modifier == EXPAND_STACK_PARM
+@@ -8664,8 +8667,6 @@
+ case POSTDECREMENT_EXPR:
+ case LOOP_EXPR:
+ case EXIT_EXPR:
+- case TRUTH_ANDIF_EXPR:
+- case TRUTH_ORIF_EXPR:
+ /* Lowered by gimplify.c. */
+ gcc_unreachable ();
+
+--- /dev/null
++++ b/gcc/testsuite/gcc.c-torture/compile/20080812-1.c
+@@ -0,0 +1,21 @@
++/* PR middle-end/37014 */
++
++void bar (signed char *);
++
++void
++foo (int x, int y)
++{
++ int i;
++ signed char a[123], b[123], c;
++ for (i = 0; i < 123; i++)
++ {
++ int e = y - x;
++ int d = e < 0 ? -e : e;
++ c = d < 75;
++ a[y] = c;
++ b[y] = c;
++ y--;
++ }
++ bar (b);
++ bar (a);
++}