From 256f77e431bc6b920ec94cf0bb4ad339ca21b8c9 Mon Sep 17 00:00:00 2001 From: Eli Friedman Date: Tue, 20 May 2008 08:59:34 +0000 Subject: [PATCH] Add codegen support for stack address intrinsics. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@51309 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/CodeGen/CGBuiltin.cpp | 8 ++++++++ test/CodeGen/builtin-stackaddress.c | 16 ++++++++++++++++ 2 files changed, 24 insertions(+) create mode 100644 test/CodeGen/builtin-stackaddress.c diff --git a/lib/CodeGen/CGBuiltin.cpp b/lib/CodeGen/CGBuiltin.cpp index e29a174229..a43649dc4b 100644 --- a/lib/CodeGen/CGBuiltin.cpp +++ b/lib/CodeGen/CGBuiltin.cpp @@ -262,6 +262,14 @@ RValue CodeGenFunction::EmitBuiltinExpr(unsigned BuiltinID, const CallExpr *E) { Builder.CreateCall(CGM.getMemCpyFn(), MemCpyOps, MemCpyOps+4); return RValue::get(MemCpyOps[0]); } + case Builtin::BI__builtin_return_address: { + Value *F = CGM.getIntrinsic(Intrinsic::returnaddress, 0, 0); + return RValue::get(Builder.CreateCall(F, EmitScalarExpr(E->getArg(0)))); + } + case Builtin::BI__builtin_frame_address: { + Value *F = CGM.getIntrinsic(Intrinsic::frameaddress, 0, 0); + return RValue::get(Builder.CreateCall(F, EmitScalarExpr(E->getArg(0)))); + } case Builtin::BI__sync_fetch_and_add: return EmitBinaryAtomic(*this, Intrinsic::atomic_las, E); case Builtin::BI__sync_fetch_and_sub: diff --git a/test/CodeGen/builtin-stackaddress.c b/test/CodeGen/builtin-stackaddress.c new file mode 100644 index 0000000000..2b9c799661 --- /dev/null +++ b/test/CodeGen/builtin-stackaddress.c @@ -0,0 +1,16 @@ +// RUN: clang -emit-llvm < %s +void* a(unsigned x) { +return __builtin_return_address(0); +} + +void* c(unsigned x) { +return __builtin_frame_address(0); +} +// RUN: clang -emit-llvm < %s +void* a(unsigned x) { +return __builtin_return_address(0); +} + +void* c(unsigned x) { +return __builtin_frame_address(0); +} -- 2.50.1