commit b6744c5a8a619501d89c0a137b61ca5b4ec93411
author Logan Chien <loganchien@google.com> Tue Dec 27 18:06:26 2011 +0800
committer Shih-wei Liao <sliao@google.com> Thu Feb 16 13:58:33 2012 -0800
tree db3f92298bf94245286cf0722ccc676743107a56
parent 17a5766bdb409b723da4871766d5d471cffb1253

Implement trunc-and-sext and trunc-and-zext.

Change-Id: I147d28b3da75ad2cab47e76d6d30715e816ec53e

src/compiler_llvm/method_compiler.cc

diff --git a/src/compiler_llvm/method_compiler.cc b/src/compiler_llvm/method_compiler.cc
index 6ca7e69..bd1bd67 100644
--- a/src/compiler_llvm/method_compiler.cc
+++ b/src/compiler_llvm/method_compiler.cc
@@ -1719,7 +1719,18 @@
 void MethodCompiler::EmitInsn_TruncAndSExt(uint32_t dex_pc,
                                            Instruction const* insn,
                                            unsigned N) {
-  // UNIMPLEMENTED(WARNING);
+
+  Instruction::DecodedInstruction dec_insn(insn);
+
+  llvm::Value* src_value = EmitLoadDalvikReg(dec_insn.vB_, kInt, kAccurate);
+
+  llvm::Value* trunc_value =
+    irb_.CreateTrunc(src_value, llvm::Type::getIntNTy(*context_, N));
+
+  llvm::Value* result_value = irb_.CreateSExt(trunc_value, irb_.getJIntTy());
+
+  EmitStoreDalvikReg(dec_insn.vA_, kInt, kAccurate, result_value);
+
   irb_.CreateBr(GetNextBasicBlock(dex_pc));
 }
 
@@ -1727,7 +1738,18 @@
 void MethodCompiler::EmitInsn_TruncAndZExt(uint32_t dex_pc,
                                            Instruction const* insn,
                                            unsigned N) {
-  // UNIMPLEMENTED(WARNING);
+
+  Instruction::DecodedInstruction dec_insn(insn);
+
+  llvm::Value* src_value = EmitLoadDalvikReg(dec_insn.vB_, kInt, kAccurate);
+
+  llvm::Value* trunc_value =
+    irb_.CreateTrunc(src_value, llvm::Type::getIntNTy(*context_, N));
+
+  llvm::Value* result_value = irb_.CreateZExt(trunc_value, irb_.getJIntTy());
+
+  EmitStoreDalvikReg(dec_insn.vA_, kInt, kAccurate, result_value);
+
   irb_.CreateBr(GetNextBasicBlock(dex_pc));
 }