diff options
| author | Chad Rosier <mcrosier@apple.com> | 2012-08-08 21:15:52 +0000 |
|---|---|---|
| committer | Chad Rosier <mcrosier@apple.com> | 2012-08-08 21:15:52 +0000 |
| commit | 48a05b9e3a80b58a9089667ebb537b80af8c3263 (patch) | |
| tree | 41d5752500651c8736b09cb92b07134746153a65 | |
| parent | 2016c8c4a2ebf528c54c42045bc6a30ae590147c (diff) | |
[ms-inline asm] Add basic codegen support for simple asm stmts. Currently,
only machine specific clobbers are modeled.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@161524 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/CodeGen/CGStmt.cpp | 15 | ||||
| -rw-r--r-- | test/CodeGen/ms-inline-asm.c | 3 |
2 files changed, 17 insertions, 1 deletions
diff --git a/lib/CodeGen/CGStmt.cpp b/lib/CodeGen/CGStmt.cpp index 33776b6c59..2e4c557db6 100644 --- a/lib/CodeGen/CGStmt.cpp +++ b/lib/CodeGen/CGStmt.cpp @@ -1686,4 +1686,19 @@ void CodeGenFunction::EmitMSAsmStmt(const MSAsmStmt &S) { // MS-style inline assembly is not fully supported, so sema emits a warning. if (!CGM.getCodeGenOpts().EmitMicrosoftInlineAsm) return; + + assert (S.isSimple() && "CodeGen can only handle simple MSAsmStmts."); + + std::vector<llvm::Value*> Args; + std::vector<llvm::Type *> ArgTypes; + + std::string MachineClobbers = Target.getClobbers(); + + llvm::FunctionType *FTy = + llvm::FunctionType::get(VoidTy, ArgTypes, false); + + llvm::InlineAsm *IA = + llvm::InlineAsm::get(FTy, *S.getAsmString(), MachineClobbers, true); + llvm::CallInst *Result = Builder.CreateCall(IA, Args); + Result->addAttribute(~0, llvm::Attribute::NoUnwind); } diff --git a/test/CodeGen/ms-inline-asm.c b/test/CodeGen/ms-inline-asm.c index 2d36bbca52..3234b98bfa 100644 --- a/test/CodeGen/ms-inline-asm.c +++ b/test/CodeGen/ms-inline-asm.c @@ -1,7 +1,8 @@ -// RUN: %clang_cc1 %s -triple x86_64-apple-darwin10 -O0 -fms-extensions -w -emit-llvm -o - | FileCheck %s +// RUN: %clang_cc1 %s -triple x86_64-apple-darwin10 -O0 -fms-extensions -fenable-experimental-ms-inline-asm -w -emit-llvm -o - | FileCheck %s void t1() { // CHECK: @t1 +// CHECK: call void asm sideeffect "", "~{dirflag},~{fpsr},~{flags}"() nounwind // CHECK: ret void __asm {} } |