commit 52c489645b6e9ae33623f1ec24143cde5444906e
author Calin Juravle <calin@google.com> Tue Dec 16 17:02:57 2014 +0000
committer Calin Juravle <calin@google.com> Fri Dec 19 09:58:27 2014 +0000
tree a39667aa354645bd42a7a061d08ca82df3004143
parent 193c7a94822f765b0b6b0cecd54c9f08dfd26425

[optimizing compiler] Add support for volatile

- for backends: arm, x86, x86_64
- added necessary instructions to assemblies
- clean up code gen for field set/get
- fixed InstructionDataEquals for some instructions
- fixed comments in compiler_enums

* 003-opcode test verifies basic volatile functionality

Change-Id: I144393efa312dfb2c332cb84056b00edffee338a

compiler/utils/arm/assembler_thumb2.cc

diff --git a/compiler/utils/arm/assembler_thumb2.cc b/compiler/utils/arm/assembler_thumb2.cc
index 3eaae56..3eccd3f 100644
--- a/compiler/utils/arm/assembler_thumb2.cc
+++ b/compiler/utils/arm/assembler_thumb2.cc
@@ -1662,9 +1662,6 @@
   CHECK_NE(rn, kNoRegister);
   CHECK_NE(rt, kNoRegister);
   CheckCondition(cond);
-  CHECK_NE(rn, kNoRegister);
-  CHECK_NE(rt, kNoRegister);
-  CheckCondition(cond);
   CHECK_LT(imm, (1u << 10));
 
   int32_t encoding = B31 | B30 | B29 | B27 | B22 | B20 |
@@ -1701,6 +1698,22 @@
 }
 
 
+void Thumb2Assembler::ldrexd(Register rt, Register rt2, Register rn, Condition cond) {
+  CHECK_NE(rn, kNoRegister);
+  CHECK_NE(rt, kNoRegister);
+  CHECK_NE(rt2, kNoRegister);
+  CHECK_NE(rt, rt2);
+  CheckCondition(cond);
+
+  int32_t encoding = B31 | B30 | B29 | B27 | B23 | B22 | B20 |
+      static_cast<uint32_t>(rn) << 16 |
+      static_cast<uint32_t>(rt) << 12 |
+      static_cast<uint32_t>(rt2) << 8 |
+      B6 | B5 | B4 | B3 | B2 | B1 | B0;
+  Emit32(encoding);
+}
+
+
 void Thumb2Assembler::strex(Register rd,
                             Register rt,
                             Register rn,
@@ -1709,6 +1722,26 @@
 }
 
 
+void Thumb2Assembler::strexd(Register rd, Register rt, Register rt2, Register rn, Condition cond) {
+  CHECK_NE(rd, kNoRegister);
+  CHECK_NE(rn, kNoRegister);
+  CHECK_NE(rt, kNoRegister);
+  CHECK_NE(rt2, kNoRegister);
+  CHECK_NE(rt, rt2);
+  CHECK_NE(rd, rt);
+  CHECK_NE(rd, rt2);
+  CheckCondition(cond);
+
+  int32_t encoding = B31 | B30 | B29 | B27 | B23 | B22 |
+      static_cast<uint32_t>(rn) << 16 |
+      static_cast<uint32_t>(rt) << 12 |
+      static_cast<uint32_t>(rt2) << 8 |
+      B6 | B5 | B4 |
+      static_cast<uint32_t>(rd);
+  Emit32(encoding);
+}
+
+
 void Thumb2Assembler::clrex(Condition cond) {
   CheckCondition(cond);
   int32_t encoding = B31 | B30 | B29 | B27 | B28 | B25 | B24 | B23 |