Etch out the code path for MS-style inline assembly.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@158325 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGStmt.cpp b/lib/CodeGen/CGStmt.cpp
index 86046b7..2f06a8e 100644
--- a/lib/CodeGen/CGStmt.cpp
+++ b/lib/CodeGen/CGStmt.cpp
@@ -133,6 +133,7 @@
case Stmt::SwitchStmtClass: EmitSwitchStmt(cast<SwitchStmt>(*S)); break;
case Stmt::AsmStmtClass: EmitAsmStmt(cast<AsmStmt>(*S)); break;
+ case Stmt::MSAsmStmtClass: EmitMSAsmStmt(cast<MSAsmStmt>(*S)); break;
case Stmt::ObjCAtTryStmtClass:
EmitObjCAtTryStmt(cast<ObjCAtTryStmt>(*S));
@@ -1681,3 +1682,43 @@
EmitStoreThroughLValue(RValue::get(Tmp), ResultRegDests[i]);
}
}
+
+void CodeGenFunction::EmitMSAsmStmt(const MSAsmStmt &S) {
+ // Analyze the asm string to decompose it into its pieces. We know that Sema
+ // has already done this, so it is guaranteed to be successful.
+
+ // Get all the output and input constraints together.
+
+ std::vector<llvm::Value*> Args;
+ std::vector<llvm::Type *> ArgTypes;
+ std::string Constraints;
+
+ // Keep track of inout constraints.
+
+ // Append the "input" part of inout constraints last.
+
+ // Clobbers
+
+ // Add machine specific clobbers
+ std::string MachineClobbers = Target.getClobbers();
+ if (!MachineClobbers.empty()) {
+ if (!Constraints.empty())
+ Constraints += ',';
+ Constraints += MachineClobbers;
+ }
+
+ llvm::Type *ResultType = VoidTy;
+
+ llvm::FunctionType *FTy =
+ llvm::FunctionType::get(ResultType, ArgTypes, false);
+
+ llvm::InlineAsm *IA =
+ llvm::InlineAsm::get(FTy, *S.getAsmString(), Constraints, true);
+ llvm::CallInst *Result = Builder.CreateCall(IA, Args);
+ Result->addAttribute(~0, llvm::Attribute::NoUnwind);
+
+ // Slap the source location of the inline asm into a !srcloc metadata on the
+ // call.
+
+ // Extract all of the register value results from the asm.
+}