8139421: PPC64LE: MacroAssembler::bxx64_patchable kill register R12
Summary: Register R12 must be preserved for stub calls (e.g. deopt handler).
Reviewed-by: goetz
--- a/hotspot/src/cpu/ppc/vm/macroAssembler_ppc.cpp Mon Oct 12 16:35:40 2015 -0700
+++ b/hotspot/src/cpu/ppc/vm/macroAssembler_ppc.cpp Mon Oct 12 12:20:38 2015 +0200
@@ -594,13 +594,6 @@
"can't identify emitted call");
} else {
// variant 1:
-#if defined(ABI_ELFv2)
- nop();
- calculate_address_from_global_toc(R12, dest, true, true, false);
- mtctr(R12);
- nop();
- nop();
-#else
mr(R0, R11); // spill R11 -> R0.
// Load the destination address into CTR,
@@ -610,7 +603,6 @@
mtctr(R11);
mr(R11, R0); // spill R11 <- R0.
nop();
-#endif
// do the call/jump
if (link) {