From 4c0a6d660ee83a4b18490d566a0a15bbf6e1d9d1 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Tue, 8 May 2007 05:38:01 +0000
Subject: Make a preemptive bitcode format change to support PR1146.  This lets
 us do pr1146 in llvm 2.1 without ugly code to emulate old behavior.  This
 should be merged into the 2.0 release branch.

llvm-svn: 36928
---
 llvm/lib/Bitcode/Reader/BitcodeReader.cpp | 41 +++++++++++++++++++------------
 1 file changed, 25 insertions(+), 16 deletions(-)

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

diff --git a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
index e9531f1..445a7c2 100644
--- a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
+++ b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp
@@ -985,10 +985,10 @@ bool BitcodeReader::ParseModule(const std::string &ModuleID) {
         GlobalInits.push_back(std::make_pair(NewGV, InitID-1));
       break;
     }
-    // FUNCTION:  [type, callingconv, isproto, linkage, alignment, section,
-    //             visibility]
+    // FUNCTION:  [type, callingconv, isproto, linkage, paramattr,
+    //             alignment, section, visibility]
     case bitc::MODULE_CODE_FUNCTION: {
-      if (Record.size() < 7)
+      if (Record.size() < 8)
         return Error("Invalid MODULE_CODE_FUNCTION record");
       const Type *Ty = getTypeByID(Record[0]);
       if (!isa<PointerType>(Ty))
@@ -1004,13 +1004,17 @@ bool BitcodeReader::ParseModule(const std::string &ModuleID) {
       Func->setCallingConv(Record[1]);
       bool isProto = Record[2];
       Func->setLinkage(GetDecodedLinkage(Record[3]));
-      Func->setAlignment((1 << Record[4]) >> 1);
-      if (Record[5]) {
-        if (Record[5]-1 >= SectionTable.size())
+      
+      assert(Func->getFunctionType()->getParamAttrs() == 
+             getParamAttrs(Record[4]));
+      
+      Func->setAlignment((1 << Record[5]) >> 1);
+      if (Record[6]) {
+        if (Record[6]-1 >= SectionTable.size())
           return Error("Invalid section ID");
-        Func->setSection(SectionTable[Record[5]-1]);
+        Func->setSection(SectionTable[Record[6]-1]);
       }
-      Func->setVisibility(GetDecodedVisibility(Record[6]));
+      Func->setVisibility(GetDecodedVisibility(Record[7]));
       
       ValueList.push_back(Func);
       
@@ -1364,12 +1368,12 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
     }
       
     case bitc::FUNC_CODE_INST_INVOKE: { // INVOKE: [cc,fnty, op0,op1,op2, ...]
-      if (Record.size() < 3) return Error("Invalid INVOKE record");
-      unsigned CCInfo = Record[0];
-      BasicBlock *NormalBB = getBasicBlock(Record[1]);
-      BasicBlock *UnwindBB = getBasicBlock(Record[2]);
+      if (Record.size() < 4) return Error("Invalid INVOKE record");
+      unsigned CCInfo = Record[1];
+      BasicBlock *NormalBB = getBasicBlock(Record[2]);
+      BasicBlock *UnwindBB = getBasicBlock(Record[3]);
       
-      unsigned OpNum = 3;
+      unsigned OpNum = 4;
       Value *Callee;
       if (getValueTypePair(Record, OpNum, NextValueNo, Callee))
         return Error("Invalid INVOKE record");
@@ -1383,6 +1387,8 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
           Record.size() < OpNum+FTy->getNumParams())
         return Error("Invalid INVOKE record");
       
+      assert(FTy->getParamAttrs() == getParamAttrs(Record[0]));
+
       SmallVector<Value*, 16> Ops;
       for (unsigned i = 0, e = FTy->getNumParams(); i != e; ++i, ++OpNum) {
         Ops.push_back(getFnValueByID(Record[OpNum], FTy->getParamType(i)));
@@ -1484,11 +1490,12 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
       break;
     }
     case bitc::FUNC_CODE_INST_CALL: { // CALL: [cc, fnty, fnid, arg0, arg1...]
-      if (Record.size() < 1)
+      if (Record.size() < 2)
         return Error("Invalid CALL record");
-      unsigned CCInfo = Record[0];
       
-      unsigned OpNum = 1;
+      unsigned CCInfo = Record[1];
+      
+      unsigned OpNum = 2;
       Value *Callee;
       if (getValueTypePair(Record, OpNum, NextValueNo, Callee))
         return Error("Invalid CALL record");
@@ -1499,6 +1506,8 @@ bool BitcodeReader::ParseFunctionBody(Function *F) {
       if (!FTy || Record.size() < FTy->getNumParams()+OpNum)
         return Error("Invalid CALL record");
       
+      assert(FTy->getParamAttrs() == getParamAttrs(Record[0]));
+      
       SmallVector<Value*, 16> Args;
       // Read the fixed params.
       for (unsigned i = 0, e = FTy->getNumParams(); i != e; ++i, ++OpNum) {
-- 
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