commit 2f340a843ea5b3413c901f8c2365243b68864468
author Vladimir Marko <vmarko@google.com> Mon Dec 01 16:48:48 2014 +0000
committer Vladimir Marko <vmarko@google.com> Mon Dec 01 16:58:31 2014 +0000
tree 0c6e6a6ac7da6fcb472243484ec164ff886832f2
parent 0c137c43551e88dbe1051315088417cb08b7f930

Quick: Fix neg-long on ARM for overlapping regs.

Bug: 18569347
Change-Id: I764a4648b7ea5fd92f1ffbb9038b9d101b50d137

compiler/dex/quick/arm/int_arm.cc

diff --git a/compiler/dex/quick/arm/int_arm.cc b/compiler/dex/quick/arm/int_arm.cc
index e38dbf5..4aedbaf 100644
--- a/compiler/dex/quick/arm/int_arm.cc
+++ b/compiler/dex/quick/arm/int_arm.cc
@@ -1162,6 +1162,7 @@
   // Check for destructive overlap
   if (rl_result.reg.GetLowReg() == rl_src.reg.GetHighReg()) {
     RegStorage t_reg = AllocTemp();
+    OpRegCopy(t_reg, rl_result.reg.GetLow());
     OpRegRegReg(kOpSub, rl_result.reg.GetLow(), z_reg, rl_src.reg.GetLow());
     OpRegRegReg(kOpSbc, rl_result.reg.GetHigh(), z_reg, t_reg);
     FreeTemp(t_reg);