commit e90501da0222717d75c126ebf89569db3976927e
author Serguei Katkov <serguei.i.katkov@intel.com> Wed Mar 12 15:56:54 2014 +0700
committer Serguei Katkov <serguei.i.katkov@intel.com> Fri Mar 14 10:26:11 2014 +0700
tree dff0aabde02d0790bab3a42738e08a9b27eafb58
parent 4ee5bd67c7dd1ba42f8187e038cee3f96cc77839

Add dependency for operations with x86 FPU stack

Load Hoisting optimization can re-order operations with
FPU stack due to no dependency set.

Patch adds resource dependency between these operations.

Change-Id: Iccce98c8f3c565903667c03803884d9de1281ea8
Signed-off-by: Serguei Katkov <serguei.i.katkov@intel.com>

compiler/dex/quick/x86/target_x86.cc

diff --git a/compiler/dex/quick/x86/target_x86.cc b/compiler/dex/quick/x86/target_x86.cc
index 7b2be0e..9994927 100644
--- a/compiler/dex/quick/x86/target_x86.cc
+++ b/compiler/dex/quick/x86/target_x86.cc
@@ -191,6 +191,11 @@
     SetupRegMask(&lir->u.m.use_mask, rDI);
     SetupRegMask(&lir->u.m.def_mask, rDI);
   }
+
+  if (flags & USE_FP_STACK) {
+    lir->u.m.use_mask |= ENCODE_X86_FP_STACK;
+    lir->u.m.def_mask |= ENCODE_X86_FP_STACK;
+  }
 }
 
 /* For dumping instructions */