add bytecode reader support for tail calls
llvm-svn: 21727
diff --git a/llvm/lib/Bytecode/Writer/Writer.cpp b/llvm/lib/Bytecode/Writer/Writer.cpp
index f6d09c8..5f614fd 100644
--- a/llvm/lib/Bytecode/Writer/Writer.cpp
+++ b/llvm/lib/Bytecode/Writer/Writer.cpp
@@ -606,7 +606,10 @@
unsigned Opcode = I.getOpcode();
unsigned NumOperands = I.getNumOperands();
- // Encode 'volatile load' as 62 and 'volatile store' as 63.
+ // Encode 'tail call' as 61, 'volatile load' as 62, and 'volatile store' as
+ // 63.
+ if (isa<CallInst>(I) && cast<CallInst>(I).isTailCall())
+ Opcode = 61;
if (isa<LoadInst>(I) && cast<LoadInst>(I).isVolatile())
Opcode = 62;
if (isa<StoreInst>(I) && cast<StoreInst>(I).isVolatile())