[clang] d83511d - [Coverage] Emit gap region after conditions when macro is present.

Zequan Wu via cfe-commits cfe-commits at lists.llvm.org
Thu Feb 18 11:41:38 PST 2021


Author: Zequan Wu
Date: 2021-02-18T11:41:04-08:00
New Revision: d83511dd26ca8d0dd5be6302ad7b55de05cedab2

URL: https://github.com/llvm/llvm-project/commit/d83511dd26ca8d0dd5be6302ad7b55de05cedab2
DIFF: https://github.com/llvm/llvm-project/commit/d83511dd26ca8d0dd5be6302ad7b55de05cedab2.diff

LOG: [Coverage] Emit gap region after conditions when macro is present.

Added: 
    

Modified: 
    clang/lib/CodeGen/CoverageMappingGen.cpp
    clang/test/CoverageMapping/if.cpp
    clang/test/CoverageMapping/macro-expressions.cpp
    clang/test/CoverageMapping/macroparams2.c
    clang/test/CoverageMapping/macros.c
    clang/test/CoverageMapping/macroscopes.cpp
    clang/test/CoverageMapping/moremacros.c

Removed: 
    


################################################################################
diff  --git a/clang/lib/CodeGen/CoverageMappingGen.cpp b/clang/lib/CodeGen/CoverageMappingGen.cpp
index 4ebdaf64879d..ce2cb380e0c1 100644
--- a/clang/lib/CodeGen/CoverageMappingGen.cpp
+++ b/clang/lib/CodeGen/CoverageMappingGen.cpp
@@ -975,6 +975,31 @@ struct CounterCoverageMappingBuilder
   /// Find a valid gap range between \p AfterLoc and \p BeforeLoc.
   Optional<SourceRange> findGapAreaBetween(SourceLocation AfterLoc,
                                            SourceLocation BeforeLoc) {
+    size_t StartDepth = locationDepth(AfterLoc);
+    size_t EndDepth = locationDepth(BeforeLoc);
+    while (!SM.isWrittenInSameFile(AfterLoc, BeforeLoc)) {
+      bool UnnestStart = StartDepth >= EndDepth;
+      bool UnnestEnd = EndDepth >= StartDepth;
+      if (UnnestEnd) {
+        SourceLocation NestedLoc = getStartOfFileOrMacro(BeforeLoc);
+        assert(SM.isWrittenInSameFile(NestedLoc, BeforeLoc));
+
+        BeforeLoc = getIncludeOrExpansionLoc(BeforeLoc);
+        assert(BeforeLoc.isValid());
+        EndDepth--;
+      }
+      if (UnnestStart) {
+        SourceLocation NestedLoc = getEndOfFileOrMacro(AfterLoc);
+        assert(SM.isWrittenInSameFile(AfterLoc, NestedLoc));
+
+        AfterLoc = getIncludeOrExpansionLoc(AfterLoc);
+        assert(AfterLoc.isValid());
+        AfterLoc = getPreciseTokenLocEnd(AfterLoc);
+        assert(AfterLoc.isValid());
+        StartDepth--;
+      }
+    }
+    AfterLoc = getPreciseTokenLocEnd(AfterLoc);
     // If the start and end locations of the gap are both within the same macro
     // file, the range may not be in source order.
     if (AfterLoc.isMacroID() || BeforeLoc.isMacroID())
@@ -984,13 +1009,6 @@ struct CounterCoverageMappingBuilder
     return {{AfterLoc, BeforeLoc}};
   }
 
-  /// Find the source range after \p AfterStmt and before \p BeforeStmt.
-  Optional<SourceRange> findGapAreaBetween(const Stmt *AfterStmt,
-                                           const Stmt *BeforeStmt) {
-    return findGapAreaBetween(getPreciseTokenLocEnd(getEnd(AfterStmt)),
-                              getStart(BeforeStmt));
-  }
-
   /// Emit a gap region between \p StartLoc and \p EndLoc with the given count.
   void fillGapAreaWithCount(SourceLocation StartLoc, SourceLocation EndLoc,
                             Counter Count) {
@@ -1155,7 +1173,7 @@ struct CounterCoverageMappingBuilder
     adjustForOutOfOrderTraversal(getEnd(S));
 
     // The body count applies to the area immediately after the increment.
-    auto Gap = findGapAreaBetween(S->getCond(), S->getBody());
+    auto Gap = findGapAreaBetween(S->getRParenLoc(), getStart(S->getBody()));
     if (Gap)
       fillGapAreaWithCount(Gap->getBegin(), Gap->getEnd(), BodyCount);
 
@@ -1230,8 +1248,7 @@ struct CounterCoverageMappingBuilder
     }
 
     // The body count applies to the area immediately after the increment.
-    auto Gap = findGapAreaBetween(getPreciseTokenLocEnd(S->getRParenLoc()),
-                                  getStart(S->getBody()));
+    auto Gap = findGapAreaBetween(S->getRParenLoc(), getStart(S->getBody()));
     if (Gap)
       fillGapAreaWithCount(Gap->getBegin(), Gap->getEnd(), BodyCount);
 
@@ -1261,8 +1278,7 @@ struct CounterCoverageMappingBuilder
     BreakContinue BC = BreakContinueStack.pop_back_val();
 
     // The body count applies to the area immediately after the range.
-    auto Gap = findGapAreaBetween(getPreciseTokenLocEnd(S->getRParenLoc()),
-                                  getStart(S->getBody()));
+    auto Gap = findGapAreaBetween(S->getRParenLoc(), getStart(S->getBody()));
     if (Gap)
       fillGapAreaWithCount(Gap->getBegin(), Gap->getEnd(), BodyCount);
 
@@ -1291,8 +1307,7 @@ struct CounterCoverageMappingBuilder
     BreakContinue BC = BreakContinueStack.pop_back_val();
 
     // The body count applies to the area immediately after the collection.
-    auto Gap = findGapAreaBetween(getPreciseTokenLocEnd(S->getRParenLoc()),
-                                  getStart(S->getBody()));
+    auto Gap = findGapAreaBetween(S->getRParenLoc(), getStart(S->getBody()));
     if (Gap)
       fillGapAreaWithCount(Gap->getBegin(), Gap->getEnd(), BodyCount);
 
@@ -1411,7 +1426,7 @@ struct CounterCoverageMappingBuilder
     propagateCounts(ParentCount, S->getCond());
 
     // The 'then' count applies to the area immediately after the condition.
-    auto Gap = findGapAreaBetween(S->getCond(), S->getThen());
+    auto Gap = findGapAreaBetween(S->getRParenLoc(), getStart(S->getThen()));
     if (Gap)
       fillGapAreaWithCount(Gap->getBegin(), Gap->getEnd(), ThenCount);
 
@@ -1421,7 +1436,7 @@ struct CounterCoverageMappingBuilder
     Counter ElseCount = subtractCounters(ParentCount, ThenCount);
     if (const Stmt *Else = S->getElse()) {
       // The 'else' count applies to the area immediately after the 'then'.
-      Gap = findGapAreaBetween(S->getThen(), Else);
+      Gap = findGapAreaBetween(getEnd(S->getThen()), getStart(Else));
       if (Gap)
         fillGapAreaWithCount(Gap->getBegin(), Gap->getEnd(), ElseCount);
       extendRegion(Else);

diff  --git a/clang/test/CoverageMapping/if.cpp b/clang/test/CoverageMapping/if.cpp
index 3c3a76a8c46a..5b705cd46ab7 100644
--- a/clang/test/CoverageMapping/if.cpp
+++ b/clang/test/CoverageMapping/if.cpp
@@ -6,7 +6,7 @@ int nop() { return 0; }
                                 // CHECK-NEXT: [[@LINE+3]]:12 -> [[@LINE+8]]:2 = #0
                                 // CHECK-NEXT: [[@LINE+3]]:15 -> [[@LINE+3]]:19 = #0
                                 // CHECK-NEXT: Branch,File 0, [[@LINE+2]]:15 -> [[@LINE+2]]:19 = 0, 0
-void foo() {                    // CHECK-NEXT: Gap,File 0, [[@LINE+1]]:20 -> [[@LINE+1]]:22 = #2
+void foo() {                    // CHECK-NEXT: Gap,File 0, [[@LINE+1]]:21 -> [[@LINE+1]]:22 = #2
   if (int j = true ? nop()      // CHECK-NEXT: [[@LINE]]:22 -> [[@LINE]]:27 = #2
                    : nop();     // CHECK-NEXT: [[@LINE]]:22 -> [[@LINE]]:27 = (#0 - #2)
       j)                        // CHECK-NEXT: [[@LINE]]:7 -> [[@LINE]]:8 = #0
@@ -41,13 +41,12 @@ int main() {                    // CHECK: File 0, [[@LINE]]:12 -> {{[0-9]+}}:2 =
 
                                 // CHECK-NEXT: File 0, [[@LINE+2]]:7 -> [[@LINE+2]]:13 = #0
                                 // CHECK-NEXT: Branch,File 0, [[@LINE+1]]:7 -> [[@LINE+1]]:13 = #5, (#0 - #5)
-  i = i == 0?                   // CHECK-NEXT: Gap,File 0, [[@LINE]]:13 -> [[@LINE+1]]:9 = #5
+  i = i == 0?                   // CHECK-NEXT: Gap,File 0, [[@LINE]]:14 -> [[@LINE+1]]:9 = #5
         i + 1 :                 // CHECK-NEXT: File 0, [[@LINE]]:9 -> [[@LINE]]:14 = #5
         i + 2;                  // CHECK-NEXT: File 0, [[@LINE]]:9 -> [[@LINE]]:14 = (#0 - #5)
 
-                                // CHECK-NEXT: File 0, [[@LINE+4]]:7 -> [[@LINE+4]]:13 = #0
-                                // CHECK-NEXT: Branch,File 0, [[@LINE+3]]:7 -> [[@LINE+3]]:13 = #6, (#0 - #6)
-                                // CHECK-NEXT: Gap,File 0, [[@LINE+2]]:13 -> [[@LINE+2]]:14 = #6
+                                // CHECK-NEXT: File 0, [[@LINE+3]]:7 -> [[@LINE+3]]:13 = #0
+                                // CHECK-NEXT: Branch,File 0, [[@LINE+2]]:7 -> [[@LINE+2]]:13 = #6, (#0 - #6)
                                 // CHECK-NEXT: File 0, [[@LINE+1]]:14 -> [[@LINE+1]]:20 = #6
   i = i == 0?i + 12:i + 10;     // CHECK-NEXT: File 0, [[@LINE]]:21 -> [[@LINE]]:27 = (#0 - #6)
 

diff  --git a/clang/test/CoverageMapping/macro-expressions.cpp b/clang/test/CoverageMapping/macro-expressions.cpp
index 2f509281274c..2b6a1b64c259 100644
--- a/clang/test/CoverageMapping/macro-expressions.cpp
+++ b/clang/test/CoverageMapping/macro-expressions.cpp
@@ -53,38 +53,45 @@ void STMT(fn3)() {
 // CHECK: foo
 // CHECK-NEXT: File 0, [[@LINE+1]]:17 -> {{[0-9]+}}:2 = #0
 void foo(int i) {
-  // CHECK-NEXT: File 0, [[@LINE+2]]:7 -> [[@LINE+2]]:8 = #0
-  // CHECK: File 0, [[@LINE+1]]:10 -> [[@LINE+1]]:12 = #1
+  // CHECK-NEXT: File 0, [[@LINE+3]]:7 -> [[@LINE+3]]:8 = #0
+  // CHECK: Gap,File 0, [[@LINE+2]]:9 -> [[@LINE+2]]:10 = #1
+  // CHECK-NEXT: File 0, [[@LINE+1]]:10 -> [[@LINE+1]]:12 = #1
   if (0) {}
 
-  // CHECK-NEXT: Expansion,File 0, [[@LINE+2]]:7 -> [[@LINE+2]]:11 = #0
+  // CHECK-NEXT: Expansion,File 0, [[@LINE+3]]:7 -> [[@LINE+3]]:11 = #0
+  // CHECK-NEXT: Gap,File 0, [[@LINE+2]]:15 -> [[@LINE+2]]:16 = #2
   // CHECK-NEXT: File 0, [[@LINE+1]]:16 -> [[@LINE+1]]:18 = #2
   if (EXPR(i)) {}
-  // CHECK-NEXT: Expansion,File 0, [[@LINE+2]]:9 -> [[@LINE+2]]:14 = (#0 + #3)
-  // CHECK: File 0, [[@LINE+1]]:20 -> [[@LINE+1]]:22 = #3
+  // CHECK-NEXT: Expansion,File 0, [[@LINE+3]]:9 -> [[@LINE+3]]:14 = (#0 + #3)
+  // CHECK-NEXT: Gap,File 0, [[@LINE+2]]:19 -> [[@LINE+2]]:20 = #3
+  // CHECK-NEXT: File 0, [[@LINE+1]]:20 -> [[@LINE+1]]:22 = #3
   for (;NEXPR(i);) {}
-  // CHECK-NEXT: Expansion,File 0, [[@LINE+4]]:8 -> [[@LINE+4]]:14 = #0
-  // CHECK-NEXT: Expansion,File 0, [[@LINE+3]]:33 -> [[@LINE+3]]:35 = (#0 + #4)
-  // CHECK-NEXT: Expansion,File 0, [[@LINE+2]]:43 -> [[@LINE+2]]:46 = #4
+  // CHECK-NEXT: Expansion,File 0, [[@LINE+5]]:8 -> [[@LINE+5]]:14 = #0
+  // CHECK-NEXT: Expansion,File 0, [[@LINE+4]]:33 -> [[@LINE+4]]:35 = (#0 + #4)
+  // CHECK-NEXT: Expansion,File 0, [[@LINE+3]]:43 -> [[@LINE+3]]:46 = #4
+  // CHECK-NEXT: Gap,File 0, [[@LINE+2]]:50 -> [[@LINE+2]]:51 = #4
   // CHECK: File 0, [[@LINE+1]]:51 -> [[@LINE+1]]:53 = #4
   for (ASSIGN(DECL(int, j), 0); LT(j, i); INC(j)) {}
   // CHECK-NEXT: Expansion,File 0, [[@LINE+1]]:3 -> [[@LINE+1]]:9 = #0
   ASSIGN(DECL(int, k), 0);
-  // CHECK-NEXT: Expansion,File 0, [[@LINE+3]]:10 -> [[@LINE+3]]:12 = (#0 + #5)
+  // CHECK-NEXT: Expansion,File 0, [[@LINE+4]]:10 -> [[@LINE+4]]:12 = (#0 + #5)
+  // CHECK-NEXT: Gap,File 0, [[@LINE+3]]:19 -> [[@LINE+3]]:20 = #5
   // CHECK-NEXT: File 0, [[@LINE+2]]:20 -> [[@LINE+2]]:31 = #5
   // CHECK-NEXT: Expansion,File 0, [[@LINE+1]]:22 -> [[@LINE+1]]:25 = #5
   while (LT(k, i)) { INC(k); }
   // CHECK-NEXT: File 0, [[@LINE+2]]:6 -> [[@LINE+2]]:8 = (#0 + #6)
   // CHECK-NEXT: Expansion,File 0, [[@LINE+1]]:16 -> [[@LINE+1]]:21 = (#0 + #6)
   do {} while (NEXPR(i));
-  // CHECK-NEXT: Expansion,File 0, [[@LINE+4]]:8 -> [[@LINE+4]]:12 = #0
-  // CHECK-NEXT: Branch,File 0, [[@LINE+3]]:21 -> [[@LINE+3]]:22 = #7, #0
-  // CHECK-NEXT: Expansion,File 0, [[@LINE+2]]:23 -> [[@LINE+2]]:26 = #0
+  // CHECK-NEXT: Expansion,File 0, [[@LINE+5]]:8 -> [[@LINE+5]]:12 = #0
+  // CHECK-NEXT: Branch,File 0, [[@LINE+4]]:21 -> [[@LINE+4]]:22 = #7, #0
+  // CHECK-NEXT: Expansion,File 0, [[@LINE+3]]:23 -> [[@LINE+3]]:26 = #0
+  // CHECK-NEXT: Gap,File 0, [[@LINE+2]]:41 -> [[@LINE+2]]:42 = #7
   // CHECK: File 0, [[@LINE+1]]:42 -> [[@LINE+1]]:44 = #7
   for (DECL(int, j) : ARR(int, 1, 2, 3)) {}
 
-  // CHECK-NEXT: File 0, [[@LINE+4]]:10 -> [[@LINE+4]]:11 = #0
-  // CHECK-NEXT: Branch,File 0, [[@LINE+3]]:10 -> [[@LINE+3]]:11 = #8, (#0 - #8)
+  // CHECK-NEXT: File 0, [[@LINE+5]]:10 -> [[@LINE+5]]:11 = #0
+  // CHECK-NEXT: Branch,File 0, [[@LINE+4]]:10 -> [[@LINE+4]]:11 = #8, (#0 - #8)
+  // CHECK-NEXT: Gap,File 0, [[@LINE+3]]:13 -> [[@LINE+3]]:14 = #8
   // CHECK-NEXT: Expansion,File 0, [[@LINE+2]]:14 -> [[@LINE+2]]:20 = #0
   // CHECK-NEXT: Expansion,File 0, [[@LINE+1]]:23 -> [[@LINE+1]]:29 = #0
   (void)(i ? PRIo64 : PRIu64);

diff  --git a/clang/test/CoverageMapping/macroparams2.c b/clang/test/CoverageMapping/macroparams2.c
index ec1a762c8077..52517323742b 100644
--- a/clang/test/CoverageMapping/macroparams2.c
+++ b/clang/test/CoverageMapping/macroparams2.c
@@ -6,11 +6,12 @@ struct S {
   int i, j;
 };
 
-// CHECK: File 0, [[@LINE+1]]:12 -> [[@LINE+10]]:2 = #0
+// CHECK: File 0, [[@LINE+1]]:12 -> [[@LINE+11]]:2 = #0
 int main() {
   struct S arr[32] = { 0 };
   int n = 0;
-  // CHECK-NEXT: Expansion,File 0, [[@LINE+2]]:7 -> [[@LINE+2]]:12 = #0
+  // CHECK-NEXT: Expansion,File 0, [[@LINE+3]]:7 -> [[@LINE+3]]:12 = #0
+  // CHECK-NEXT: Gap,File 0, [[@LINE+2]]:33 -> [[@LINE+2]]:34 = #1
   // CHECK-NEXT: File 0, [[@LINE+1]]:34 -> [[@LINE+3]]:4 = #1
   if (MACRO(arr[n].j, arr[n].i)) {
     n = 1;

diff  --git a/clang/test/CoverageMapping/macros.c b/clang/test/CoverageMapping/macros.c
index e7fb92e5931c..b35444d78f3a 100644
--- a/clang/test/CoverageMapping/macros.c
+++ b/clang/test/CoverageMapping/macros.c
@@ -38,37 +38,55 @@ void func3() { // CHECK-NEXT: File 0, [[@LINE]]:14 -> [[@LINE+3]]:2 = #0
 // CHECK-NEXT: File 2, 4:17 -> 4:22 = #0
 
 // CHECK-NEXT: func4
-void func4() { // CHECK-NEXT: File 0, [[@LINE]]:14 -> [[@LINE+7]]:2 = #0
+void func4() { // CHECK-NEXT: File 0, [[@LINE]]:14 -> [[@LINE+8]]:2 = #0
   int i = 0;
   while (i++ < 10) // CHECK-NEXT: File 0, [[@LINE]]:10 -> [[@LINE]]:18 = (#0 + #1)
-    if (i < 5) // CHECK: File 0, [[@LINE]]:5 -> [[@LINE+3]]:14 = #1
+    if (i < 5) // CHECK: File 0, [[@LINE]]:5 -> [[@LINE+4]]:14 = #1
                // CHECK-NEXT: File 0, [[@LINE-1]]:9 -> [[@LINE-1]]:14 = #1
                // CHECK-NEXT: Branch,File 0, [[@LINE-2]]:9 -> [[@LINE-2]]:14 = #2, (#1 - #2)
+               // CHECK-NEXT: Gap,File 0, [[@LINE-3]]:15 -> [[@LINE+1]]:7 = #2
       MACRO_2; // CHECK-NEXT: Expansion,File 0, [[@LINE]]:7 -> [[@LINE]]:14 = #2
 }
 // CHECK-NEXT: File 1, 4:17 -> 4:22 = #2
 // CHECK-NOT: File 1
 
 // CHECK-NEXT: func5
-void func5() { // CHECK-NEXT: File 0, [[@LINE]]:14 -> [[@LINE+5]]:2 = #0
+void func5() { // CHECK-NEXT: File 0, [[@LINE]]:14 -> [[@LINE+6]]:2 = #0
   int i = 0;
   if (i > 5) // CHECK-NEXT: File 0, [[@LINE]]:7 -> [[@LINE]]:12 = #0
              // CHECK-NEXT: Branch,File 0, [[@LINE-1]]:7 -> [[@LINE-1]]:12 = #1, (#0 - #1)
+             // CHECK-NEXT: Gap,File 0, [[@LINE-2]]:13 -> [[@LINE+1]]:5 = #1
     MACRO_3; // CHECK-NEXT: Expansion,File 0, [[@LINE]]:5 -> [[@LINE]]:12 = #1
 }
 // CHECK-NEXT: Expansion,File 1, 6:17 -> 6:24 = #1
 // CHECK-NEXT: File 2, 4:17 -> 4:22 = #1
 
 // CHECK-NEXT: func6
-void func6(unsigned count) { // CHECK-NEXT: File 0, [[@LINE]]:28 -> [[@LINE+5]]:2 = #0
-begin:                       // CHECK-NEXT: File 0, [[@LINE]]:1 -> [[@LINE+4]]:2 = #1
+void func6(unsigned count) { // CHECK-NEXT: File 0, [[@LINE]]:28 -> [[@LINE+6]]:2 = #0
+begin:                       // CHECK-NEXT: File 0, [[@LINE]]:1 -> [[@LINE+5]]:2 = #1
     if (count--)             // CHECK-NEXT: File 0, [[@LINE]]:9 -> [[@LINE]]:16 = #1
                              // CHECK-NEXT: Branch,File 0, [[@LINE-1]]:9 -> [[@LINE-1]]:16 = #2, (#1 - #2)
+                             // CHECK-NEXT: Gap,File 0, [[@LINE-2]]:17 -> [[@LINE+1]]:9 = #2
         GOTO begin;          // CHECK-NEXT: File 0, [[@LINE]]:9 -> [[@LINE]]:19 = #2
 }
 // CHECK-NEXT: Expansion,File 0, [[@LINE-2]]:9 -> [[@LINE-2]]:13 = #2
 // CHECK-NEXT: File 1, 7:14 -> 7:18 = #2
 
+// Regression test for gap region between macros.
+// CHECK-NEXT: func7
+int k, l;
+#define m(e) e##e
+void func7() { // CHECK-NEXT: File 0, [[@LINE]]:14 -> [[@LINE+6]]:2 = #0
+  int kk,ll;   // CHECK-NEXT: File 0, [[@LINE+1]]:7 -> [[@LINE+1]]:8 = #0
+  if (k)       // CHECK-NEXT: Branch,File 0, [[@LINE]]:7 -> [[@LINE]]:8 = #1
+    m(k);      // CHECK-NEXT: Gap,File 0, [[@LINE-1]]:9 -> [[@LINE]]:5 = #1
+  else         // CHECK-NEXT: Expansion,File 0, [[@LINE-1]]:5 -> [[@LINE-1]]:6 = #0
+    l = m(l);  // CHECK-NEXT: Gap,File 0, [[@LINE-2]]:7 -> [[@LINE]]:5 = (#0 - #1)
+}              // CHECK-NEXT: File 0, [[@LINE-1]]:5 -> [[@LINE-1]]:10 = (#0 - #1)
+               // CHECK-NEXT: Expansion,File 0, [[@LINE-2]]:9 -> [[@LINE-2]]:10 = (#0 - #1)
+               // CHECK-NEXT: File 1, [[@LINE-9]]:14 -> [[@LINE-9]]:18 = #0
+               // CHECK-NEXT: File 2, [[@LINE-10]]:14 -> [[@LINE-10]]:15 = (#0 - #1)
+
 int main(int argc, const char *argv[]) {
   func();
   func2();

diff  --git a/clang/test/CoverageMapping/macroscopes.cpp b/clang/test/CoverageMapping/macroscopes.cpp
index 9a2134b26577..88a72116fa7d 100644
--- a/clang/test/CoverageMapping/macroscopes.cpp
+++ b/clang/test/CoverageMapping/macroscopes.cpp
@@ -61,13 +61,15 @@ int main() {
   starts_a_scope
   ends_a_scope
 
-  // CHECK-NEXT: Expansion,File 0, [[@LINE+2]]:3 -> [[@LINE+2]]:17 = #0
+  // CHECK-NEXT: Expansion,File 0, [[@LINE+3]]:3 -> [[@LINE+3]]:17 = #0
+  // CHECK-NEXT: Gap,File 0, [[@LINE+2]]:17 -> [[@LINE+3]]:5 = #8
   // CHECK-NEXT: Expansion,File 0, [[@LINE+2]]:5 -> [[@LINE+2]]:16 = #8
   starts_a_while
     simple_stmt;
 
   x = 0;
-  // CHECK-NEXT: Expansion,File 0, [[@LINE+4]]:3 -> [[@LINE+4]]:17 = #0
+  // CHECK-NEXT: Expansion,File 0, [[@LINE+5]]:3 -> [[@LINE+5]]:17 = #0
+  // CHECK-NEXT: Gap,File 0, [[@LINE+4]]:17 -> [[@LINE+4]]:18 = #9
   // CHECK-NEXT: File 0, [[@LINE+3]]:18 -> [[@LINE+5]]:15 = #9
   // CHECK-NEXT: Expansion,File 0, [[@LINE+3]]:5 -> [[@LINE+3]]:16 = #9
   // CHECK-NEXT: Expansion,File 0, [[@LINE+3]]:3 -> [[@LINE+3]]:15 = #9

diff  --git a/clang/test/CoverageMapping/moremacros.c b/clang/test/CoverageMapping/moremacros.c
index 6da10075e34e..64e5c62bfac3 100644
--- a/clang/test/CoverageMapping/moremacros.c
+++ b/clang/test/CoverageMapping/moremacros.c
@@ -9,18 +9,20 @@ int main(int argc, const char *argv[]) {
   // CHECK-NEXT: File 0, [[@LINE+1]]:7 -> [[@LINE+1]]:12 = #0
   if (!argc) {} // CHECK: File 0, [[@LINE]]:14 -> [[@LINE]]:16 = #1
 
-  // CHECK-NEXT: File 0, [[@LINE+4]]:7 -> [[@LINE+4]]:12 = #0
-  // CHECK-NEXT: Branch,File 0, [[@LINE+3]]:7 -> [[@LINE+3]]:12 = #2, (#0 - #2)
+  // CHECK-NEXT: File 0, [[@LINE+5]]:7 -> [[@LINE+5]]:12 = #0
+  // CHECK-NEXT: Branch,File 0, [[@LINE+4]]:7 -> [[@LINE+4]]:12 = #2, (#0 - #2)
+  // CHECK-NEXT: Gap,File 0, [[@LINE+3]]:13 -> [[@LINE+3]]:14 = #2
   // CHECK-NEXT: Expansion,File 0, [[@LINE+2]]:14 -> [[@LINE+2]]:19 = #2
   // CHECK-NEXT: File 0, [[@LINE+1]]:19 -> [[@LINE+4]]:8 = #2
   if (!argc) LBRAC
     return 0;
   // CHECK-NEXT: Expansion,File 0, [[@LINE+1]]:3 -> [[@LINE+1]]:8 = #2
-  RBRAC // CHECK-NEXT: [[@LINE]]:8 -> [[@LINE+7]]:3 = (#0 - #2)
+  RBRAC // CHECK-NEXT: [[@LINE]]:8 -> [[@LINE+8]]:3 = (#0 - #2)
 
-  // CHECK-NEXT: File 0, [[@LINE+5]]:3 -> [[@LINE+16]]:2 = (#0 - #2)
-  // CHECK-NEXT: File 0, [[@LINE+4]]:7 -> [[@LINE+4]]:12 = (#0 - #2)
-  // CHECK-NEXT: Branch,File 0, [[@LINE+3]]:7 -> [[@LINE+3]]:12 = #3, ((#0 - #2) - #3)
+  // CHECK-NEXT: File 0, [[@LINE+6]]:3 -> [[@LINE+17]]:2 = (#0 - #2)
+  // CHECK-NEXT: File 0, [[@LINE+5]]:7 -> [[@LINE+5]]:12 = (#0 - #2)
+  // CHECK-NEXT: Branch,File 0, [[@LINE+4]]:7 -> [[@LINE+4]]:12 = #3, ((#0 - #2) - #3)
+  // CHECK-NEXT: Gap,File 0, [[@LINE+3]]:13 -> [[@LINE+3]]:14 = #3
   // CHECK-NEXT: Expansion,File 0, [[@LINE+2]]:14 -> [[@LINE+2]]:19 = #3
   // CHECK-NEXT: File 0, [[@LINE+1]]:19 -> [[@LINE+3]]:4 = #3
   if (!argc) LBRAC


        


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