From 9a12912c9abb0ee34885b6c2d45f693cc2155b32 Mon Sep 17 00:00:00 2001 From: Bill Wendling Date: Mon, 10 Dec 2012 19:47:53 +0000 Subject: [PATCH] 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. llvm-svn: 169755 --- clang/lib/CodeGen/BackendUtil.cpp | 4 +++- clang/test/CodeGen/code-coverage.c | 19 +++++++++++++++++++ 2 files changed, 22 insertions(+), 1 deletion(-) create mode 100644 clang/test/CodeGen/code-coverage.c diff --git a/clang/lib/CodeGen/BackendUtil.cpp b/clang/lib/CodeGen/BackendUtil.cpp index f6e9dd7..e960871 100644 --- a/clang/lib/CodeGen/BackendUtil.cpp +++ b/clang/lib/CodeGen/BackendUtil.cpp @@ -294,7 +294,9 @@ void EmitAssemblyHelper::CreatePasses(TargetMachine *TM) { 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)); diff --git a/clang/test/CodeGen/code-coverage.c b/clang/test/CodeGen/code-coverage.c new file mode 100644 index 0000000..b073ae6 --- /dev/null +++ b/clang/test/CodeGen/code-coverage.c @@ -0,0 +1,19 @@ +// RUN: %clang_cc1 -O0 -mno-red-zone -fprofile-arcs -ftest-coverage -emit-llvm %s -o - | FileCheck %s +// + +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 -- 2.7.4