[clang] 3fe5a0c - MCDCCoverageBuilder: Use `pop_back_val()`

[NAKAMURA Takumi via cfe-commits]

Author: NAKAMURA Takumi
Date: 2024-02-15T20:27:47+09:00
New Revision: 3fe5a0cfa5391db18fcc226f3f783642d3f44503

URL: https://github.com/llvm/llvm-project/commit/3fe5a0cfa5391db18fcc226f3f783642d3f44503
DIFF: https://github.com/llvm/llvm-project/commit/3fe5a0cfa5391db18fcc226f3f783642d3f44503.diff

LOG: MCDCCoverageBuilder: Use `pop_back_val()`

Added: 
    

Modified: 
    clang/lib/CodeGen/CoverageMappingGen.cpp

Removed: 
    


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diff  --git a/clang/lib/CodeGen/CoverageMappingGen.cpp b/clang/lib/CodeGen/CoverageMappingGen.cpp
index fdf821a0eb6928..eb3beec23808e6 100644
--- a/clang/lib/CodeGen/CoverageMappingGen.cpp
+++ b/clang/lib/CodeGen/CoverageMappingGen.cpp
@@ -770,12 +770,10 @@ struct MCDCCoverageBuilder {
   /// Pop and return the LHS Decision ([0,0] if not set).
   mcdc::ConditionIDs pop() {
     if (!CGM.getCodeGenOpts().MCDCCoverage || NotMapped)
-      return DecisionStack.front();
+      return DecisionStackSentinel;
 
     assert(DecisionStack.size() > 1);
-    mcdc::ConditionIDs D = DecisionStack.back();
-    DecisionStack.pop_back();
-    return D;
+    return DecisionStack.pop_back_val();
   }
 
   /// Return the total number of conditions and reset the state. The number of