From: Vitaly Buka <vitalybuka@google.com>
Date: Fri, 12 May 2023 02:35:12 +0000 (-0700)
Subject: [LiveDebugValues] Temporarily initialize MLocTracker::CurBB
X-Git-Tag: upstream/17.0.6~8744
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b135df08397c6484544fe43b64e90d6311d9f200;p=platform%2Fupstream%2Fllvm.git

[LiveDebugValues] Temporarily initialize MLocTracker::CurBB

Looks like code assumes that it will be always set, but it's not true:
https://reviews.llvm.org/D150420. This is temporarily suppression to enabled
stricter msan on a bot.
---

diff --git a/llvm/lib/CodeGen/LiveDebugValues/InstrRefBasedImpl.h b/llvm/lib/CodeGen/LiveDebugValues/InstrRefBasedImpl.h
index 772aa40..a98cf5c 100644
--- a/llvm/lib/CodeGen/LiveDebugValues/InstrRefBasedImpl.h
+++ b/llvm/lib/CodeGen/LiveDebugValues/InstrRefBasedImpl.h
@@ -656,7 +656,7 @@ public:
 
   // If we discover a new machine location, assign it an mphi with this
   // block number.
-  unsigned CurBB;
+  unsigned CurBB = 0;  // FIXME: https://reviews.llvm.org/D150420
 
   /// Cached local copy of the number of registers the target has.
   unsigned NumRegs;