[Coverage] Precise region termination with deferred regions (reapply)

The current coverage implementation doesn't handle region termination
very precisely. Take for example an `if' statement with a `return':

  void f() {
    if (true) {
      return; // The `if' body's region is terminated here.
    }
    // This line gets the same coverage as the `if' condition.
  }

If the function `f' is called, the line containing the comment will be
marked as having executed once, which is not correct.

The solution here is to create a deferred region after terminating a
region. The deferred region is completed once the start location of the
next statement is known, and is then pushed onto the region stack.
In the cases where it's not possible to complete a deferred region, it
can safely be dropped.

Testing: lit test updates, a stage2 coverage-enabled build of clang

This is a reapplication but there are no changes from the original commit.
With D36813, the segment builder in llvm will be able to handle deferred
regions correctly.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@312818 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/CoverageMappingGen.cpp b/lib/CodeGen/CoverageMappingGen.cpp
index f2e051c615b52f003805de743d26a4d0ee63b768..f47dd07f0cc0cf2cad2128df200fe2ac6a3cc2ee 100644 (file)
--- a/lib/CodeGen/CoverageMappingGen.cpp
+++ b/lib/CodeGen/CoverageMappingGen.cpp
@@ -45,10 +45,14 @@ class SourceMappingRegion {
   /// \brief The region's ending location.
   Optional<SourceLocation> LocEnd;
 
+  /// Whether this region should be emitted after its parent is emitted.
+  bool DeferRegion;
+
 public:
   SourceMappingRegion(Counter Count, Optional<SourceLocation> LocStart,
-                      Optional<SourceLocation> LocEnd)
-      : Count(Count), LocStart(LocStart), LocEnd(LocEnd) {}
+                      Optional<SourceLocation> LocEnd, bool DeferRegion = false)
+      : Count(Count), LocStart(LocStart), LocEnd(LocEnd),
+        DeferRegion(DeferRegion) {}
 
   const Counter &getCounter() const { return Count; }
 
@@ -71,6 +75,10 @@ public:
     assert(LocEnd && "Region has no end location");
     return *LocEnd;
   }
+
+  bool isDeferred() const { return DeferRegion; }
+
+  void setDeferred(bool Deferred) { DeferRegion = Deferred; }
 };
 
 /// Spelling locations for the start and end of a source region.
@@ -409,6 +417,10 @@ struct CounterCoverageMappingBuilder
   /// \brief A stack of currently live regions.
   std::vector<SourceMappingRegion> RegionStack;
 
+  /// The currently deferred region: its end location and count can be set once
+  /// its parent has been popped from the region stack.
+  Optional<SourceMappingRegion> DeferredRegion;
+
   CounterExpressionBuilder Builder;
 
   /// \brief A location in the most recently visited file or macro.
@@ -444,19 +456,60 @@ struct CounterCoverageMappingBuilder
   /// used with popRegions to exit a "scope", ending the region that was pushed.
   size_t pushRegion(Counter Count, Optional<SourceLocation> StartLoc = None,
                     Optional<SourceLocation> EndLoc = None) {
-    if (StartLoc)
+    if (StartLoc) {
       MostRecentLocation = *StartLoc;
+      completeDeferred(Count, MostRecentLocation);
+    }
     RegionStack.emplace_back(Count, StartLoc, EndLoc);
 
     return RegionStack.size() - 1;
   }
 
+  /// Complete any pending deferred region by setting its end location and
+  /// count, and then pushing it onto the region stack.
+  size_t completeDeferred(Counter Count, SourceLocation DeferredEndLoc) {
+    size_t Index = RegionStack.size();
+    if (!DeferredRegion)
+      return Index;
+
+    // Consume the pending region.
+    SourceMappingRegion DR = DeferredRegion.getValue();
+    DeferredRegion = None;
+
+    // If the region ends in an expansion, find the expansion site.
+    if (SM.getFileID(DeferredEndLoc) != SM.getMainFileID()) {
+      FileID StartFile = SM.getFileID(DR.getStartLoc());
+      if (isNestedIn(DeferredEndLoc, StartFile)) {
+        do {
+          DeferredEndLoc = getIncludeOrExpansionLoc(DeferredEndLoc);
+        } while (StartFile != SM.getFileID(DeferredEndLoc));
+      }
+    }
+
+    // The parent of this deferred region ends where the containing decl ends,
+    // so the region isn't useful.
+    if (DR.getStartLoc() == DeferredEndLoc)
+      return Index;
+
+    // If we're visiting statements in non-source order (e.g switch cases or
+    // a loop condition) we can't construct a sensible deferred region.
+    if (!SpellingRegion(SM, DR.getStartLoc(), DeferredEndLoc).isInSourceOrder())
+      return Index;
+
+    DR.setCounter(Count);
+    DR.setEndLoc(DeferredEndLoc);
+    handleFileExit(DeferredEndLoc);
+    RegionStack.push_back(DR);
+    return Index;
+  }
+
   /// \brief Pop regions from the stack into the function's list of regions.
   ///
   /// Adds all regions from \c ParentIndex to the top of the stack to the
   /// function's \c SourceRegions.
   void popRegions(size_t ParentIndex) {
     assert(RegionStack.size() >= ParentIndex && "parent not in stack");
+    bool ParentOfDeferredRegion = false;
     while (RegionStack.size() > ParentIndex) {
       SourceMappingRegion &Region = RegionStack.back();
       if (Region.hasStartLoc()) {
@@ -488,9 +541,26 @@ struct CounterCoverageMappingBuilder
 
         assert(SM.isWrittenInSameFile(Region.getStartLoc(), EndLoc));
         SourceRegions.push_back(Region);
+
+        if (ParentOfDeferredRegion) {
+          ParentOfDeferredRegion = false;
+
+          // If there's an existing deferred region, keep the old one, because
+          // it means there are two consecutive returns (or a similar pattern).
+          if (!DeferredRegion.hasValue() &&
+              // File IDs aren't gathered within macro expansions, so it isn't
+              // useful to try and create a deferred region inside of one.
+              (SM.getFileID(EndLoc) == SM.getMainFileID()))
+            DeferredRegion =
+                SourceMappingRegion(Counter::getZero(), EndLoc, None);
+        }
+      } else if (Region.isDeferred()) {
+        assert(!ParentOfDeferredRegion && "Consecutive deferred regions");
+        ParentOfDeferredRegion = true;
       }
       RegionStack.pop_back();
     }
+    assert(!ParentOfDeferredRegion && "Deferred region with no parent");
   }
 
   /// \brief Return the currently active region.
@@ -617,6 +687,8 @@ struct CounterCoverageMappingBuilder
     handleFileExit(StartLoc);
     if (!Region.hasStartLoc())
       Region.setStartLoc(StartLoc);
+
+    completeDeferred(Region.getCounter(), StartLoc);
   }
 
   /// \brief Mark \c S as a terminator, starting a zero region.
@@ -626,6 +698,7 @@ struct CounterCoverageMappingBuilder
     if (!Region.hasEndLoc())
       Region.setEndLoc(getEnd(S));
     pushRegion(Counter::getZero());
+    getRegion().setDeferred(true);
   }
 
   /// \brief Keep counts of breaks and continues inside loops.
@@ -639,13 +712,15 @@ struct CounterCoverageMappingBuilder
       CoverageMappingModuleGen &CVM,
       llvm::DenseMap<const Stmt *, unsigned> &CounterMap, SourceManager &SM,
       const LangOptions &LangOpts)
-      : CoverageMappingBuilder(CVM, SM, LangOpts), CounterMap(CounterMap) {}
+      : CoverageMappingBuilder(CVM, SM, LangOpts), CounterMap(CounterMap),
+        DeferredRegion(None) {}
 
   /// \brief Write the mapping data to the output stream
   void write(llvm::raw_ostream &OS) {
     llvm::SmallVector<unsigned, 8> VirtualFileMapping;
     gatherFileIDs(VirtualFileMapping);
     SourceRegionFilter Filter = emitExpansionRegions();
+    assert(!DeferredRegion && "Deferred region never completed");
     emitSourceRegions(Filter);
     gatherSkippedRegions();
 
@@ -667,13 +742,19 @@ struct CounterCoverageMappingBuilder
   }
 
   void VisitDecl(const Decl *D) {
+    assert(!DeferredRegion && "Deferred region never completed");
+
     Stmt *Body = D->getBody();
 
     // Do not propagate region counts into system headers.
     if (Body && SM.isInSystemHeader(SM.getSpellingLoc(getStart(Body))))
       return;
 
-    propagateCounts(getRegionCounter(Body), Body);
+    Counter ExitCount = propagateCounts(getRegionCounter(Body), Body);
+    assert(RegionStack.empty() && "Regions entered but never exited");
+
+    // Complete any deferred regions introduced by the last statement in a decl.
+    popRegions(completeDeferred(ExitCount, getEnd(Body)));
   }
 
   void VisitReturnStmt(const ReturnStmt *S) {

diff --git a/test/CoverageMapping/deferred-region.cpp b/test/CoverageMapping/deferred-region.cpp
new file mode 100644 (file)
index 0000000..282b6a1
--- /dev/null
+++ b/test/CoverageMapping/deferred-region.cpp
@@ -0,0 +1,165 @@
+// RUN: %clang_cc1 -std=c++11 -fprofile-instrument=clang -fcoverage-mapping -dump-coverage-mapping -fexceptions -fcxx-exceptions -emit-llvm-only -triple %itanium_abi_triple -main-file-name deferred-region.cpp %s | FileCheck %s
+
+#define IF if
+#define STMT(S) S
+
+// CHECK-LABEL: _Z3fooi:
+void foo(int x) {
+  if (x == 0) {
+    return;
+  } // CHECK: [[@LINE]]:4 -> [[@LINE+2]]:2 = (#0 - #1)
+
+}
+
+// CHECK-NEXT: _Z4foooi:
+void fooo(int x) {
+  if (x == 0) {
+    return;
+  } // CHECK: [[@LINE]]:4 -> [[@LINE+2]]:3 = (#0 - #1)
+
+  if (x == 1) {
+    return;
+  } // CHECK: [[@LINE]]:4 -> [[@LINE+2]]:2 = ((#0 - #1) - #2)
+
+}
+
+// CHECK-LABEL: _Z3bazv:
+void baz() { // CHECK: [[@LINE]]:12 -> [[@LINE+2]]:2
+  return;    // CHECK-NOT: File
+}
+
+// CHECK-LABEL: _Z3bari:
+void bar(int x) {
+  IF (x)
+    return; // CHECK: [[@LINE]]:11 -> [[@LINE+2]]:3 = (#0 - #1)
+
+  IF (!x)
+    return; // CHECK: [[@LINE]]:11 -> [[@LINE+2]]:3 = ((#0 - #1) - #2)
+
+  foo(x);
+}
+
+// CHECK-LABEL: _Z4quuxi:
+// Deferred regions are not emitted within macro expansions.
+void quux(int x) {
+  STMT(
+  if (x == 0)
+    return;)
+
+  // CHECK-NOT: [[@LINE-2]]:{{.*}} -> [[@LINE+2]]
+
+  if (x == 1)
+    STMT(return;)
+
+  // CHECK-NOT: [[@LINE-2]]:{{.*}} -> [[@LINE+3]]
+
+  STMT(
+  if (x == 2)
+    return;
+
+  // CHECK-NOT: [[@LINE-2]]:{{.*}} -> [[@LINE+2]]
+
+  if (x == 3)
+    return;
+  )
+}
+
+// CHECK-LABEL: _Z8weird_ifv:
+void weird_if() {
+  int i = 0;
+
+  if (false)
+    return; // CHECK: [[@LINE]]:11 -> [[@LINE+2]]:3 = (#0 - #1)
+
+  if (false)
+    i++;
+
+  if (i + 100 > 0) { // CHECK: [[@LINE]]:20 -> [[@LINE+6]]:4 = #3
+    if (false)       // CHECK: [[@LINE+1]]:7 -> [[@LINE+1]]:13 = #4
+      return;        // CHECK: [[@LINE]]:13 -> [[@LINE+2]]:5 = (#3 - #4)
+                     // CHECK: [[@LINE+1]]:5 -> [[@LINE+3]]:4 = (#3 - #4)
+    return;          // CHECK: [[@LINE]]:5 -> [[@LINE+4]]:3 = ((#0 - #1) - #3)
+
+  }
+
+  if (false)
+    return;
+}
+
+// CHECK-LABEL: _Z8for_loopv:
+void for_loop() {
+  if (false)
+    return; // CHECK: [[@LINE]]:11 -> [[@LINE+2]]:3 = (#0 - #1)
+
+  for (int i = 0; i < 10; ++i) {
+    if (i % 2 == 0)
+      continue; // CHECK: [[@LINE]]:15 -> [[@LINE+2]]:5 = (#2 - #3)
+
+    if (i % 5 == 0)
+      break; // CHECK: [[@LINE]]:12 -> [[@LINE+2]]:5 = ((#2 - #3) - #4)
+
+    int x = i; // CHECK: [[@LINE]]:5 -> [[@LINE+3]]:4 = ((#2 - #3) - #4)
+    return; // CHECK-NOT: [[@LINE]]:11 -> [[@LINE+2]]
+
+  }
+}
+
+struct Error {};
+
+// CHECK-LABEL: _Z10while_loopv:
+void while_loop() {
+  if (false)
+    return; // CHECK: [[@LINE]]:11 -> [[@LINE+2]]:3 = (#0 - #1)
+
+  int x = 0;
+  while (++x < 10) {
+    if (x == 1)
+      continue; // CHECK: [[@LINE]]:15 -> [[@LINE+2]]:5 = (#2 - #3)
+
+    while (++x < 4) {
+      if (x == 3)
+        break; // CHECK: [[@LINE]]:14 -> [[@LINE+2]]:7 = (#4 - #5)
+
+      while (++x < 5) {}
+    }
+
+    if (x == 0)
+      throw Error(); // CHECK: [[@LINE]]:20 -> [[@LINE+2]]:5 = ((#2 - #3) - #7)
+
+    while (++x < 9) {
+      if (x == 0)
+        break; // CHECK-NOT: [[@LINE]]:14 -> [[@LINE+2]]
+
+    }
+  }
+}
+
+// CHECK-LABEL: _Z5gotosv:
+void gotos() {
+  if (false)
+    goto out; // CHECK: [[@LINE]]:13 -> [[@LINE+2]]:3 = (#0 - #1)
+
+  return; // CHECK: [[@LINE]]:3 -> [[@LINE+4]]:2 = (#0 - #1)
+
+out:
+       return; // CHECK: [[@LINE]]:8 -> [[@LINE+1]]:2 = 0
+}
+
+int main() {
+  foo(0);
+  foo(1);
+  fooo(0);
+  fooo(1);
+  baz();
+  bar(0);
+  bar(1);
+  quux(0);
+  quux(1);
+  quux(2);
+  quux(3);
+  weird_if();
+  for_loop();
+  while_loop();
+  gotos();
+  return 0;
+}

diff --git a/test/CoverageMapping/label.cpp b/test/CoverageMapping/label.cpp
index 1c5111a675a1882bc161c2017569937e0fe3b888..aec5e4f7ebf57b51d77cbf22fdec992b181d0556 100644 (file)
--- a/test/CoverageMapping/label.cpp
+++ b/test/CoverageMapping/label.cpp
@@ -14,19 +14,22 @@ void func() {                // CHECK-NEXT: File 0, [[@LINE]]:13 -> {{[0-9]+}}:2
       int m = 2;
     } else
       goto x;                // CHECK-NEXT: File 0, [[@LINE]]:7 -> [[@LINE]]:13 = (#1 - #2)
-    int k = 3;               // CHECK-NEXT: File 0, [[@LINE]]:5 -> [[@LINE+1]]:4 = #3
-  }
-  static int j = 0;          // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+4]]:2 = ((#0 + #3) - #1)
+    int k = 3;               // CHECK-NEXT: File 0, [[@LINE-1]]:13 -> [[@LINE]]:5 = #3
+  }                          // CHECK-NEXT: File 0, [[@LINE-1]]:5 -> [[@LINE]]:4 = #3
+  static int j = 0;          // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+5]]:2 = ((#0 + #3) - #1)
   ++j;
   if(j == 1)                 // CHECK-NEXT: File 0, [[@LINE]]:6 -> [[@LINE]]:12 = ((#0 + #3) - #1)
     goto x;                  // CHECK-NEXT: File 0, [[@LINE]]:5 -> [[@LINE]]:11 = #4
+                             // CHECK-NEXT: File 0, [[@LINE-1]]:11 -> [[@LINE+1]]:2 = (((#0 + #3) - #1) - #4)
 }
 
                              // CHECK-NEXT: test1
 void test1(int x) {          // CHECK-NEXT: File 0, [[@LINE]]:19 -> {{[0-9]+}}:2 = #0
   if(x == 0)                 // CHECK-NEXT: File 0, [[@LINE]]:6 -> [[@LINE]]:12 = #0
     goto a;                  // CHECK-NEXT: File 0, [[@LINE]]:5 -> [[@LINE]]:11 = #1
-  goto b;                    // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE]]:9 = (#0 - #1)
+                             // CHECK-NEXT: File 0, [[@LINE-1]]:11 -> [[@LINE+1]]:3 = (#0 - #1)
+  goto b;                    // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+5]]:2 = (#0 - #1)
+                             // CHECK-NEXT: File 0, [[@LINE-1]]:3 -> [[@LINE+4]]:2 = #3
 a:                           // CHECK-NEXT: File 0, [[@LINE]]:1 -> [[@LINE+3]]:2 = #2
 b:                           // CHECK-NEXT: File 0, [[@LINE]]:1 -> [[@LINE+2]]:2 = #3
   x = x + 1;
@@ -36,9 +39,11 @@ b:                           // CHECK-NEXT: File 0, [[@LINE]]:1 -> [[@LINE+2]]:2
 void test2(int x) {          // CHECK-NEXT: File 0, [[@LINE]]:19 -> {{[0-9]+}}:2 = #0
   if(x == 0)                 // CHECK-NEXT: File 0, [[@LINE]]:6 -> [[@LINE]]:12 = #0
     goto a;                  // CHECK-NEXT: File 0, [[@LINE]]:5 -> [[@LINE]]:11 = #1
-                             // CHECK-NEXT: File 0, [[@LINE+2]]:8 -> [[@LINE+2]]:25 = (#0 - #1)
+                             // CHECK-NEXT: File 0, [[@LINE-1]]:11 -> [[@LINE+3]]:8 = #0
+                             // CHECK-NEXT: File 0, [[@LINE+2]]:8 -> [[@LINE+3]]:11 = (#0 - #1)
                              // CHECK-NEXT: File 0, [[@LINE+1]]:11 -> [[@LINE+1]]:17 = (#0 - #1)
-  else if(x == 1) goto b;    // CHECK-NEXT: File 0, [[@LINE]]:19 -> [[@LINE]]:25 = #2
+  else if(x == 1)            // CHECK-NEXT: File 0, [[@LINE+1]]:5 -> [[@LINE+1]]:11 = #2
+    goto b;                  // CHECK-NEXT: File 0, [[@LINE]]:11 -> [[@LINE+1]]:1 = #3
 a:                           // CHECK-NEXT: File 0, [[@LINE]]:1 -> [[@LINE+3]]:2 = #3
 b:                           // CHECK-NEXT: File 0, [[@LINE]]:1 -> [[@LINE+2]]:2 = #4
   x = x + 1;
@@ -47,11 +52,13 @@ b:                           // CHECK-NEXT: File 0, [[@LINE]]:1 -> [[@LINE+2]]:2
                              // CHECK-NEXT: main
 int main() {                 // CHECK-NEXT: File 0, [[@LINE]]:12 -> {{[0-9]+}}:2 = #0
   int j = 0;
-  for(int i = 0; i < 10; ++i) { // CHECK: File 0, [[@LINE]]:31 -> [[@LINE+11]]:4 = #1
-  a:                         // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+10]]:4 = #2
+  for(int i = 0; i < 10; ++i) { // CHECK: File 0, [[@LINE]]:31 -> [[@LINE+13]]:4 = #1
+  a:                         // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+12]]:4 = #2
     if(i < 3)                // CHECK-NEXT: File 0, [[@LINE]]:8 -> [[@LINE]]:13 = #2
       goto e;                // CHECK-NEXT: File 0, [[@LINE]]:7 -> [[@LINE]]:13 = #3
-    goto c;                  // CHECK-NEXT: File 0, [[@LINE]]:5 -> [[@LINE]]:11 = (#2 - #3)
+                             // CHECK-NEXT: File 0, [[@LINE-1]]:13 -> [[@LINE+1]]:5 = (#2 - #3)
+    goto c;                  // CHECK-NEXT: File 0, [[@LINE]]:5 -> [[@LINE+8]]:4 = (#2 - #3)
+
   b:                         // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+6]]:4 = #4
     j = 2;
   c:                         // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+4]]:4 = #5

diff --git a/test/CoverageMapping/moremacros.c b/test/CoverageMapping/moremacros.c
index 56662270d073b913ed33fd08541f45c009b50a96..630b75d855ee9f41aadebca934e01b22ac371c68 100644 (file)
--- a/test/CoverageMapping/moremacros.c
+++ b/test/CoverageMapping/moremacros.c
@@ -15,7 +15,7 @@ int main(int argc, const char *argv[]) {
   if (!argc) LBRAC
     return 0;
   // CHECK-NEXT: Expansion,File 0, [[@LINE+1]]:3 -> [[@LINE+1]]:8 = #2
-  RBRAC
+  RBRAC // CHECK-NEXT: [[@LINE]]:8 -> [[@LINE+6]]:3 = (#0 - #2)
 
   // CHECK-NEXT: File 0, [[@LINE+4]]:3 -> [[@LINE+15]]:2 = (#0 - #2)
   // CHECK-NEXT: File 0, [[@LINE+3]]:7 -> [[@LINE+3]]:12 = (#0 - #2)
@@ -23,7 +23,7 @@ int main(int argc, const char *argv[]) {
   // CHECK-NEXT: File 0, [[@LINE+1]]:19 -> [[@LINE+3]]:4 = #3
   if (!argc) LBRAC
     return 0;
-  }
+  } // CHECK-NEXT: [[@LINE]]:4 -> [[@LINE+5]]:3 = ((#0 - #2) - #3)
 
   // CHECK-NEXT: File 0, [[@LINE+3]]:3 -> [[@LINE+7]]:2 = ((#0 - #2) - #3)
   // CHECK-NEXT: File 0, [[@LINE+2]]:7 -> [[@LINE+2]]:12 = ((#0 - #2) - #3)
@@ -31,7 +31,7 @@ int main(int argc, const char *argv[]) {
   if (!argc) {
     return 0;
   // CHECK-NEXT: Expansion,File 0, [[@LINE+1]]:3 -> [[@LINE+1]]:8 = #4
-  RBRAC
+  RBRAC // CHECK-NEXT: [[@LINE]]:8 -> [[@LINE+1]]:2 = (((#0 - #2) - #3) - #4)
 }
 
 // CHECK-NEXT: File 1, 3:15 -> 3:16 = #2

diff --git a/test/CoverageMapping/return.c b/test/CoverageMapping/return.c
index 1b190b0eb7333622a71e5396d44668399284bddd..3cc271b7ca34c75adb24774a67f32bfa9a05136d 100644 (file)
--- a/test/CoverageMapping/return.c
+++ b/test/CoverageMapping/return.c
@@ -13,7 +13,7 @@ void func2() {                  // CHECK-NEXT: File 0, [[@LINE]]:14 -> {{[0-9]+}
   for(int i = 0; i < 10; ++i) { // CHECK-NEXT: File 0, [[@LINE]]:31 -> {{[0-9]+}}:4 = #1
                                 // CHECK-NEXT: File 0, [[@LINE+1]]:8 -> [[@LINE+1]]:13 = #1
     if(i > 2) {                 // CHECK-NEXT: File 0, [[@LINE]]:15 -> [[@LINE+2]]:6 = #2
-      return;
+      return;                   // CHECK-NEXT: File 0, [[@LINE+1]]:6 -> [[@LINE+3]]:5 = (#1 - #2)
     }                           // CHECK-NEXT: File 0, [[@LINE+2]]:5 -> {{[0-9]+}}:4 = (#1 - #2)
                                 // CHECK-NEXT: File 0, [[@LINE+1]]:8 -> [[@LINE+1]]:14 = (#1 - #2)
     if(i == 3) {                // CHECK-NEXT: File 0, [[@LINE]]:16 -> [[@LINE+2]]:6 = #3

diff --git a/test/CoverageMapping/switch.cpp b/test/CoverageMapping/switch.cpp
index 52f22e8eda1fe8ae07188734ad47592d75f29a4f..d347e663d10f9a46968ae91256124839e3dffc66 100644 (file)
--- a/test/CoverageMapping/switch.cpp
+++ b/test/CoverageMapping/switch.cpp
@@ -6,7 +6,7 @@ void foo(int i) {   // CHECK-NEXT: File 0, [[@LINE]]:17 -> [[@LINE+8]]:2 = #0
   case 1:           // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+1]]:11 = #2
     return;
   case 2:           // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+1]]:10 = #3
-    break;
+    break;          // CHECK-NEXT: File 0, [[@LINE]]:10 -> [[@LINE+2]]:3 = #1
   }
   int x = 0;        // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+1]]:2 = #1
 }
@@ -55,7 +55,7 @@ int main() {        // CHECK-NEXT: File 0, [[@LINE]]:12 -> [[@LINE+35]]:2 = #0
     i = 2;
     break;
   default:          // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+1]]:10 = #4
-    break;
+    break;          // CHECK-NEXT: File 0, [[@LINE]]:10 -> [[@LINE+2]]:3 = #1
   }
   switch(i) {       // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+23]]:2 = #1
   case 0:           // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+2]]:10 = #6
@@ -64,7 +64,7 @@ int main() {        // CHECK-NEXT: File 0, [[@LINE]]:12 -> [[@LINE+35]]:2 = #0
   case 1:           // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+3]]:10 = #7
     i = 2;
   default:          // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+1]]:10 = (#7 + #8)
-    break;
+    break;          // CHECK-NEXT: File 0, [[@LINE]]:10 -> [[@LINE+3]]:3 = #5
   }
 
   switch(i) {       // CHECK-NEXT: File 0, [[@LINE]]:3 -> [[@LINE+13]]:2 = #5

diff --git a/test/CoverageMapping/switchmacro.c b/test/CoverageMapping/switchmacro.c
index 55f93d8f60c09fb5634f803f23f1dfcf5278b328..8fb1b83d711fa73f8889d0837c6aa1c6ff83cca0 100644 (file)
--- a/test/CoverageMapping/switchmacro.c
+++ b/test/CoverageMapping/switchmacro.c
@@ -8,6 +8,7 @@ int foo(int i) { // CHECK-NEXT: File 0, [[@LINE]]:16 -> {{[0-9]+}}:2 = #0
   default:       // CHECK-NEXT: File 0, [[@LINE]]:3 -> {{[0-9]+}}:11 = #2
     if (i == 1)  // CHECK-NEXT: File 0, [[@LINE]]:9 -> [[@LINE]]:15 = #2
       return 0;  // CHECK-NEXT: File 0, [[@LINE]]:7 -> [[@LINE]]:15 = #3
+                 // CHECK-NEXT: File 0, [[@LINE-1]]:15 -> [[@LINE+3]]:5 = (#2 - #3)
     // CHECK-NEXT: Expansion,File 0, [[@LINE+2]]:5 -> [[@LINE+2]]:8 = (#2 - #3) (Expanded file = 1)
     // CHECK-NEXT: File 0, [[@LINE+1]]:8 -> {{[0-9]+}}:11 = (#2 - #3)
     FOO(1);

diff --git a/test/CoverageMapping/trycatch.cpp b/test/CoverageMapping/trycatch.cpp
index 01d8fb9307401705fa73c54b69d847b8e6497200..37b35d30987f5b14bf8e67141ed7978dc72683b1 100644 (file)
--- a/test/CoverageMapping/trycatch.cpp
+++ b/test/CoverageMapping/trycatch.cpp
@@ -18,7 +18,7 @@ void func(int i) {                    // CHECK-NEXT: File 0, [[@LINE]]:18 -> {{[
                                       // CHECK-NEXT: File 0, [[@LINE+1]]:10 -> [[@LINE+2]]:27 = (#0 - #1)
   } else if(i == 8)                   // CHECK-NEXT: File 0, [[@LINE]]:13 -> [[@LINE]]:19 = (#0 - #1)
     throw ImportantError();           // CHECK-NEXT: File 0, [[@LINE]]:5 -> [[@LINE]]:27 = #2
-}
+}                                     // CHECK-NEXT: File 0, [[@LINE-1]]:27 -> [[@LINE]]:2 = ((#0 - #1) - #2)
 
                                       // CHECK-NEXT: main
 int main() {                          // CHECK-NEXT: File 0, [[@LINE]]:12 -> [[@LINE+13]]:2 = #0