getPristineRegs is not accurately considering shrink wrapping puts

registers not saved in certain blocks. Use explicit getCalleeSavedInfo
and isLiveIn instead.

This fixes pr32292.

Patch by Tim Shen!

llvm-svn: 299124

1 files changed, 3 insertions, 0 deletions

diff --git a/llvm/lib/AsmParser/LLParser.cpp b/llvm/lib/AsmParser/LLParser.cpp
index ab315dd2c7f..d8f6c1c5146 100644
--- a/llvm/lib/AsmParser/LLParser.cpp
+++ b/llvm/lib/AsmParser/LLParser.cpp
@@ -4593,6 +4593,9 @@ bool LLParser::parseConstantValue(Type *Ty, Constant *&C) {
     C = cast<Constant>(V);
     return false;
   }
+  case ValID::t_Null:
+    C = Constant::getNullValue(Ty);
+    return false;
   default:
     return Error(Loc, "expected a constant value");
   }