Fix a bug in the bc reader/writer: we were not correctly encoding varargs
nonccc calls (we were dropping the CC and tail flag). This broke several
FORTRAN programs.
Testcase here: Regression/Assembler/2006-05-26-VarargsCallEncode.ll
llvm-svn: 28501
diff --git a/llvm/lib/Bytecode/Writer/Writer.cpp b/llvm/lib/Bytecode/Writer/Writer.cpp
index 4ec6b2a..83e8a57 100644
--- a/llvm/lib/Bytecode/Writer/Writer.cpp
+++ b/llvm/lib/Bytecode/Writer/Writer.cpp
@@ -527,7 +527,8 @@
// variable argument.
NumFixedOperands = 3+NumParams;
}
- output_vbr(2 * I->getNumOperands()-NumFixedOperands);
+ output_vbr(2 * I->getNumOperands()-NumFixedOperands +
+ unsigned(Opcode == 56 || Opcode == 58));
// The type for the function has already been emitted in the type field of the
// instruction. Just emit the slot # now.
@@ -548,6 +549,14 @@
assert(Slot >= 0 && "No slot number for value!?!?");
output_vbr((unsigned)Slot);
}
+
+ // If this is the escape sequence for call, emit the tailcall/cc info.
+ if (Opcode == 58) {
+ const CallInst *CI = cast<CallInst>(I);
+ output_vbr((CI->getCallingConv() << 1) | unsigned(CI->isTailCall()));
+ } else if (Opcode == 56) { // Invoke escape sequence.
+ output_vbr(cast<InvokeInst>(I)->getCallingConv());
+ }
}