[cfe-commits] r169755 - in /cfe/trunk: lib/CodeGen/BackendUtil.cpp test/CodeGen/code-coverage.c

[Bill Wendling]

Author: void
Date: Mon Dec 10 13:47:53 2012
New Revision: 169755

URL: http://llvm.org/viewvc/llvm-project?rev=169755&view=rev
Log:
Specify if `-mno-red-zone' was used when creating the GCOV instrucmentation pass.

This prevents the functions generated by that pass from using the red zone.
<rdar://problem/12843084>

Added:
    cfe/trunk/test/CodeGen/code-coverage.c
Modified:
    cfe/trunk/lib/CodeGen/BackendUtil.cpp

Modified: cfe/trunk/lib/CodeGen/BackendUtil.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/BackendUtil.cpp?rev=169755&r1=169754&r2=169755&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/BackendUtil.cpp (original)
+++ cfe/trunk/lib/CodeGen/BackendUtil.cpp Mon Dec 10 13:47:53 2012
@@ -294,7 +294,9 @@
   if (CodeGenOpts.EmitGcovArcs || CodeGenOpts.EmitGcovNotes) {
     MPM->add(createGCOVProfilerPass(CodeGenOpts.EmitGcovNotes,
                                     CodeGenOpts.EmitGcovArcs,
-                                    TargetTriple.isMacOSX()));
+                                    TargetTriple.isMacOSX(),
+                                    false,
+                                    CodeGenOpts.DisableRedZone));
 
     if (CodeGenOpts.getDebugInfo() == CodeGenOptions::NoDebugInfo)
       MPM->add(createStripSymbolsPass(true));

Added: cfe/trunk/test/CodeGen/code-coverage.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/code-coverage.c?rev=169755&view=auto
==============================================================================
--- cfe/trunk/test/CodeGen/code-coverage.c (added)
+++ cfe/trunk/test/CodeGen/code-coverage.c Mon Dec 10 13:47:53 2012
@@ -0,0 +1,19 @@
+// RUN: %clang_cc1 -O0  -mno-red-zone -fprofile-arcs -ftest-coverage -emit-llvm %s -o - | FileCheck %s
+// <rdar://problem/12843084>
+
+int test1(int a) {
+  switch (a % 2) {
+  case 0:
+    ++a;
+  case 1:
+    a /= 2;
+  }
+  return a;
+}
+
+// Check tha the `-mno-red-zone' flag is set here on the generated functions.
+
+// CHECK: void @__llvm_gcov_indirect_counter_increment(i32* %{{.*}}, i64** %{{.*}}) unnamed_addr noinline noredzone
+// CHECK: void @__llvm_gcov_writeout() unnamed_addr noinline noredzone
+// CHECK: void @__llvm_gcov_init() unnamed_addr noinline noredzone
+// CHECK: void @__gcov_flush() unnamed_addr noinline noredzone