6732154: REG: Printing an Image using image/gif doc flavor crashes the VM, Solsparc
Summary: delay transform call until uses of t2 are constructed
Reviewed-by: never
--- a/hotspot/src/share/vm/opto/divnode.cpp Fri Aug 01 10:06:45 2008 -0700
+++ b/hotspot/src/share/vm/opto/divnode.cpp Thu Aug 14 10:15:29 2008 -0700
@@ -264,8 +264,14 @@
Node *t1 = phase->transform(new (phase->C, 3) URShiftLNode(lolo_product, phase->intcon(N / 2)));
Node *t2 = phase->transform(new (phase->C, 3) AddLNode(hilo_product, t1));
- Node *t3 = phase->transform(new (phase->C, 3) RShiftLNode(t2, phase->intcon(N / 2)));
- Node *t4 = phase->transform(new (phase->C, 3) AndLNode(t2, phase->longcon(0xFFFFFFFF)));
+
+ // Construct both t3 and t4 before transforming so t2 doesn't go dead
+ // prematurely.
+ Node *t3 = new (phase->C, 3) RShiftLNode(t2, phase->intcon(N / 2));
+ Node *t4 = new (phase->C, 3) AndLNode(t2, phase->longcon(0xFFFFFFFF));
+ t3 = phase->transform(t3);
+ t4 = phase->transform(t4);
+
Node *t5 = phase->transform(new (phase->C, 3) AddLNode(t4, lohi_product));
Node *t6 = phase->transform(new (phase->C, 3) RShiftLNode(t5, phase->intcon(N / 2)));
Node *t7 = phase->transform(new (phase->C, 3) AddLNode(t3, hihi_product));