[Alignment][NFC] Add DebugStr and operator*

Summary:
This is a roll forward of D77394 minus AlignmentFromAssumptions (which needs to be addressed separately)
Differences from D77394:
 - DebugStr() now prints the alignment value or `None` and no more `Align(x)` or `MaybeAlign(x)`
   - This is to keep Warning message consistent (CodeGen/SystemZ/alloca-04.ll)
 - Removed a few unneeded headers from Alignment (since it's included everywhere it's better to keep the dependencies to a minimum)

Reviewers: courbet

Subscribers: sdardis, hiraditya, jrtc27, atanasyan, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D77537

1 files changed, 3 insertions, 2 deletions

diff --git a/llvm/lib/CodeGen/MachineFrameInfo.cpp b/llvm/lib/CodeGen/MachineFrameInfo.cpp
index 7690505..7ba27ff 100644
--- a/llvm/lib/CodeGen/MachineFrameInfo.cpp
+++ b/llvm/lib/CodeGen/MachineFrameInfo.cpp
@@ -41,8 +41,9 @@ static inline Align clampStackAlignment(bool ShouldClamp, Align Alignment,
                                         Align StackAlignment) {
   if (!ShouldClamp || Alignment <= StackAlignment)
     return Alignment;
-  LLVM_DEBUG(dbgs() << "Warning: requested alignment " << Alignment.value()
-                    << " exceeds the stack alignment " << StackAlignment.value()
+  LLVM_DEBUG(dbgs() << "Warning: requested alignment " << DebugStr(Alignment)
+                    << " exceeds the stack alignment "
+                    << DebugStr(StackAlignment)
                     << " when stack realignment is off" << '\n');
   return StackAlignment;
 }