[LLVM-COV]Replace tabs to the space indentations in the HTML coverage report.

When using orbis-llvm-cov.exe to generate the HTML report, the HTML report 
can look quite different to the source file if it includes tabs.The default
tab size is 2 spaces instead of 8 spaces. A command line switch is
be added to set the tab size.

Differential Revision: https://reviews.llvm.org/D23087

llvm-svn: 277715

3 files changed, 24 insertions, 0 deletions

diff --git a/llvm/test/tools/llvm-cov/Inputs/showTabsHTML.covmapping b/llvm/test/tools/llvm-cov/Inputs/showTabsHTML.covmapping
new file mode 100644
index 00000000000..96df49dcc59
--- /dev/null
+++ b/llvm/test/tools/llvm-cov/Inputs/showTabsHTML.covmapping
diff --git a/llvm/test/tools/llvm-cov/Inputs/showTabsHTML.proftext b/llvm/test/tools/llvm-cov/Inputs/showTabsHTML.proftext
new file mode 100644
index 00000000000..5419d233fc0
--- /dev/null
+++ b/llvm/test/tools/llvm-cov/Inputs/showTabsHTML.proftext
@@ -0,0 +1,8 @@
+main
+# Func Hash:
+0
+# Num Counters:
+1
+# Counter Values:
+1
+
diff --git a/llvm/test/tools/llvm-cov/showTabsHTML.cpp b/llvm/test/tools/llvm-cov/showTabsHTML.cpp
new file mode 100644
index 00000000000..953c06a3c60
--- /dev/null
+++ b/llvm/test/tools/llvm-cov/showTabsHTML.cpp
@@ -0,0 +1,16 @@
+// RUN: llvm-profdata merge -o %t.profdata %S/Inputs/showTabsHTML.proftext
+// RUN: llvm-cov show %S/Inputs/showTabsHTML.covmapping -format html -instr-profile %t.profdata -filename-equivalence %s | FileCheck -check-prefix=CHECK %s
+
+int main(int argc, char ** argv) {
+	(void) "This tab starts at column 0";            // CHECK:   (void) "This tab starts at column 0";
+  (void) "	This tab starts at column 10";           // CHECK: (void) "  This tab starts at column 10";
+  (void) "This 	 tab starts at column 15";           // CHECK: (void) "This   tab starts at column 15";
+
+  return 0;
+}
+
+// RUN: llvm-cov show %S/Inputs/showTabsHTML.covmapping -format html -tab-size=3 -instr-profile %t.profdata -filename-equivalence %s | FileCheck -check-prefix=CHECK-TABSIZE %s
+
+// CHECK-TABSIZE:    (void) "This tab starts at column 0";
+// CHECK-TABSIZE: (void) "  This tab starts at column 10";
+// CHECK-TABSIZE: (void) "This     tab starts at column 15";
\ No newline at end of file