From e4977cf750eaff28275429191821420c20b0c64f Mon Sep 17 00:00:00 2001
From: Dan Gohman <gohman@apple.com>
Date: Fri, 23 May 2008 01:55:30 +0000
Subject: Make structs and arrays first-class types, and add assembly and
 bitcode support for the extractvalue and insertvalue instructions and
 constant expressions.

Note that this does not yet include CodeGen support.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51468 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Bitcode/Reader/BitcodeReader.cpp | 64 ++++++++++++++++++++++++++++++++++++
 1 file changed, 64 insertions(+)

(limited to 'lib/Bitcode/Reader/BitcodeReader.cpp')

diff --git a/lib/Bitcode/Reader/BitcodeReader.cpp b/lib/Bitcode/Reader/BitcodeReader.cpp
index c4f2247edc..4fa08a0f3a 100644
--- a/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -770,6 +770,29 @@ bool BitcodeReader::ParseConstants() {
       V = ConstantExpr::getGetElementPtr(Elts[0], &Elts[1], Elts.size()-1);
       break;
     }
+    case bitc::CST_CODE_CE_EXTRACTVAL: { // CE_EXTRACTVAL: [n x operands]
+      if (Record.size() & 1) return Error("Invalid CE_EXTRACTVAL record");
+      SmallVector<Constant*, 16> Elts;
+      for (unsigned i = 0, e = Record.size(); i != e; i += 2) {
+        const Type *ElTy = getTypeByID(Record[i]);
+        if (!ElTy) return Error("Invalid CE_EXTRACTVAL record");
+        Elts.push_back(ValueList.getConstantFwdRef(Record[i+1], ElTy));
+      }
+      V = ConstantExpr::getExtractValue(Elts[0], &Elts[1], Elts.size()-1);
+      break;
+    }
+    case bitc::CST_CODE_CE_INSERTVAL: { // CE_INSERTVAL: [n x operands]
+      if (Record.size() & 1) return Error("Invalid CE_INSERTVAL record");
+      SmallVector<Constant*, 16> Elts;
+      for (unsigned i = 0, e = Record.size(); i != e; i += 2) {
+        const Type *ElTy = getTypeByID(Record[i]);
+        if (!ElTy) return Error("Invalid CE_INSERTVAL record");
+        Elts.push_back(ValueList.getConstantFwdRef(Record[i+1], ElTy));
+      }
+      V = ConstantExpr::getInsertValue(Elts[0], Elts[1],
+                                       &Elts[2], Elts.size()-1);
+      break;
+    }
     case bitc::CST_CODE_CE_SELECT:  // CE_SELECT: [opval#, opval#, opval#]
       if (Record.size() < 3) return Error("Invalid CE_SELECT record");
       V = ConstantExpr::getSelect(ValueList.getConstantFwdRef(Record[0],
@@ -1301,6 +1324,47 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
       break;
     }
       
+    case bitc::FUNC_CODE_INST_EXTRACTVAL: { // EXTRACTVAL: [n x operands]
+      unsigned OpNum = 0;
+      Value *Agg;
+      if (getValueTypePair(Record, OpNum, NextValueNo, Agg))
+        return Error("Invalid EXTRACTVAL record");
+
+      SmallVector<Value*, 16> EXTRACTVALIdx;
+      while (OpNum != Record.size()) {
+        Value *Op;
+        if (getValueTypePair(Record, OpNum, NextValueNo, Op))
+          return Error("Invalid EXTRACTVAL record");
+        EXTRACTVALIdx.push_back(Op);
+      }
+
+      I = ExtractValueInst::Create(Agg,
+                                   EXTRACTVALIdx.begin(), EXTRACTVALIdx.end());
+      break;
+    }
+      
+    case bitc::FUNC_CODE_INST_INSERTVAL: { // INSERTVAL: [n x operands]
+      unsigned OpNum = 0;
+      Value *Agg;
+      if (getValueTypePair(Record, OpNum, NextValueNo, Agg))
+        return Error("Invalid INSERTVAL record");
+      Value *Val;
+      if (getValueTypePair(Record, OpNum, NextValueNo, Val))
+        return Error("Invalid INSERTVAL record");
+
+      SmallVector<Value*, 16> INSERTVALIdx;
+      while (OpNum != Record.size()) {
+        Value *Op;
+        if (getValueTypePair(Record, OpNum, NextValueNo, Op))
+          return Error("Invalid INSERTVAL record");
+        INSERTVALIdx.push_back(Op);
+      }
+
+      I = InsertValueInst::Create(Agg, Val,
+                                  INSERTVALIdx.begin(), INSERTVALIdx.end());
+      break;
+    }
+      
     case bitc::FUNC_CODE_INST_SELECT: { // SELECT: [opval, ty, opval, opval]
       unsigned OpNum = 0;
       Value *TrueVal, *FalseVal, *Cond;
-- 
cgit v1.2.3-18-g5258