Fix the root cause of the bootstrap failure:
There was no way to check if a given register/mode pair was valid. We now return
an error code (-2) instead of asserting. If anyone thinks that an assert
at this point is really needed, we can autogen a hasValidDwarfRegNum instead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132236 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
index 5617a0f..dee6e53 100644
--- a/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter/AsmPrinter.cpp
@@ -769,7 +769,7 @@
int Reg = TRI->getDwarfRegNum(MLoc.getReg(), false);
for (const unsigned *SR = TRI->getSuperRegisters(MLoc.getReg());
- *SR && Reg == -1; ++SR) {
+ *SR && Reg < 0; ++SR) {
Reg = TRI->getDwarfRegNum(*SR, false);
// FIXME: Get the bit range this register uses of the superregister
// so that we can produce a DW_OP_bit_piece