From ab3cd075b314995f213b6ca50b6b3b4a14c051bd Mon Sep 17 00:00:00 2001
From: Alan Phipps <a-phipps@ti.com>
Date: Wed, 20 Sep 2023 16:31:49 -0500
Subject: Revert "[Coverage][llvm-cov] Enable MC/DC Support in LLVM
 Source-based Code Coverage (2/3)"

This reverts commit 618a22144db5e45da8c95dc22064103e1b5e5b71.

Buildbots failing on windows and one other issue.
---
 .../ProfileData/Coverage/CoverageMappingReader.cpp | 33 ++--------------------
 1 file changed, 3 insertions(+), 30 deletions(-)

(limited to 'llvm/lib/ProfileData/Coverage/CoverageMappingReader.cpp')

diff --git a/llvm/lib/ProfileData/Coverage/CoverageMappingReader.cpp b/llvm/lib/ProfileData/Coverage/CoverageMappingReader.cpp
index 5e2340e..5c888cb 100644
--- a/llvm/lib/ProfileData/Coverage/CoverageMappingReader.cpp
+++ b/llvm/lib/ProfileData/Coverage/CoverageMappingReader.cpp
@@ -245,7 +245,6 @@ Error RawCoverageMappingReader::readMappingRegionsSubArray(
   unsigned LineStart = 0;
   for (size_t I = 0; I < NumRegions; ++I) {
     Counter C, C2;
-    uint64_t BIDX = 0, NC = 0, ID = 0, TID = 0, FID = 0;
     CounterMappingRegion::RegionKind Kind = CounterMappingRegion::CodeRegion;
 
     // Read the combined counter + region kind.
@@ -296,27 +295,6 @@ Error RawCoverageMappingReader::readMappingRegionsSubArray(
           if (auto Err = readCounter(C2))
             return Err;
           break;
-        case CounterMappingRegion::MCDCBranchRegion:
-          // For a MCDC Branch Region, read two successive counters and 3 IDs.
-          Kind = CounterMappingRegion::MCDCBranchRegion;
-          if (auto Err = readCounter(C))
-            return Err;
-          if (auto Err = readCounter(C2))
-            return Err;
-          if (auto Err = readIntMax(ID, std::numeric_limits<unsigned>::max()))
-            return Err;
-          if (auto Err = readIntMax(TID, std::numeric_limits<unsigned>::max()))
-            return Err;
-          if (auto Err = readIntMax(FID, std::numeric_limits<unsigned>::max()))
-            return Err;
-          break;
-        case CounterMappingRegion::MCDCDecisionRegion:
-          Kind = CounterMappingRegion::MCDCDecisionRegion;
-          if (auto Err = readIntMax(BIDX, std::numeric_limits<unsigned>::max()))
-            return Err;
-          if (auto Err = readIntMax(NC, std::numeric_limits<unsigned>::max()))
-            return Err;
-          break;
         default:
           return make_error<CoverageMapError>(coveragemap_error::malformed,
                                               "region kind is incorrect");
@@ -370,14 +348,9 @@ Error RawCoverageMappingReader::readMappingRegionsSubArray(
       dbgs() << "\n";
     });
 
-    auto CMR = CounterMappingRegion(
-        C, C2,
-        CounterMappingRegion::MCDCParameters{
-            static_cast<unsigned>(BIDX), static_cast<unsigned>(NC),
-            static_cast<unsigned>(ID), static_cast<unsigned>(TID),
-            static_cast<unsigned>(FID)},
-        InferredFileID, ExpandedFileID, LineStart, ColumnStart,
-        LineStart + NumLines, ColumnEnd, Kind);
+    auto CMR = CounterMappingRegion(C, C2, InferredFileID, ExpandedFileID,
+                                    LineStart, ColumnStart,
+                                    LineStart + NumLines, ColumnEnd, Kind);
     if (CMR.startLoc() > CMR.endLoc())
       return make_error<CoverageMapError>(
           coveragemap_error::malformed,
-- 
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