Use GetLow() to access low register of a pair

A couple of spots were missed.

Change-Id: I14bd1d1bec4b497b742ef9edaf762e0c8e4ebf79
Signed-off-by: Mark Mendell <mark.p.mendell@intel.com>
diff --git a/compiler/dex/quick/x86/int_x86.cc b/compiler/dex/quick/x86/int_x86.cc
index 05b5e43..dc8504b 100644
--- a/compiler/dex/quick/x86/int_x86.cc
+++ b/compiler/dex/quick/x86/int_x86.cc
@@ -1810,7 +1810,7 @@
           NewLIR2(kX86Sal32RI, rl_result.reg.GetHighReg(), shift_amount - 32);
           LoadConstant(rl_result.reg.GetLow(), 0);
         } else {
-          OpRegCopy(rl_result.reg, rl_src.reg);
+          OpRegCopy(rl_result.reg.GetLow(), rl_src.reg.GetLow());
           OpRegCopy(rl_result.reg.GetHigh(), rl_src.reg.GetHigh());
           NewLIR3(kX86Shld32RRI, rl_result.reg.GetHighReg(), rl_result.reg.GetLowReg(),
                   shift_amount);
@@ -1829,7 +1829,7 @@
           NewLIR2(kX86Sar32RI, rl_result.reg.GetLowReg(), shift_amount - 32);
           NewLIR2(kX86Sar32RI, rl_result.reg.GetHighReg(), 31);
         } else {
-          OpRegCopy(rl_result.reg, rl_src.reg);
+          OpRegCopy(rl_result.reg.GetLow(), rl_src.reg.GetLow());
           OpRegCopy(rl_result.reg.GetHigh(), rl_src.reg.GetHigh());
           NewLIR3(kX86Shrd32RRI, rl_result.reg.GetLowReg(), rl_result.reg.GetHighReg(),
                   shift_amount);
@@ -1846,7 +1846,7 @@
           NewLIR2(kX86Shr32RI, rl_result.reg.GetLowReg(), shift_amount - 32);
           LoadConstant(rl_result.reg.GetHigh(), 0);
         } else {
-          OpRegCopy(rl_result.reg, rl_src.reg);
+          OpRegCopy(rl_result.reg.GetLow(), rl_src.reg.GetLow());
           OpRegCopy(rl_result.reg.GetHigh(), rl_src.reg.GetHigh());
           NewLIR3(kX86Shrd32RRI, rl_result.reg.GetLowReg(), rl_result.reg.GetHighReg(),
                   shift_amount);