Include a source location when complaining about bad inline assembly.
Add a MI->emitError() method that the backend can use to report errors
related to inline assembly. Call it from X86FloatingPoint.cpp when the
constraints are wrong.
This enables proper clang diagnostics from the backend:
$ clang -c pr30848.c
pr30848.c:5:12: error: Inline asm output regs must be last on the x87 stack
__asm__ ("" : "=u" (d)); /* { dg-error "output regs" } */
^
1 error generated.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134307 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/MachineInstr.cpp b/lib/CodeGen/MachineInstr.cpp
index 77828c9..f490713 100644
--- a/lib/CodeGen/MachineInstr.cpp
+++ b/lib/CodeGen/MachineInstr.cpp
@@ -15,13 +15,16 @@
#include "llvm/Constants.h"
#include "llvm/Function.h"
#include "llvm/InlineAsm.h"
+#include "llvm/LLVMContext.h"
#include "llvm/Metadata.h"
+#include "llvm/Module.h"
#include "llvm/Type.h"
#include "llvm/Value.h"
#include "llvm/Assembly/Writer.h"
#include "llvm/CodeGen/MachineConstantPool.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineMemOperand.h"
+#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/MachineRegisterInfo.h"
#include "llvm/CodeGen/PseudoSourceValue.h"
#include "llvm/MC/MCInstrDesc.h"
@@ -1712,3 +1715,24 @@
}
return Hash;
}
+
+void MachineInstr::emitError(StringRef Msg) const {
+ // Find the source location cookie.
+ unsigned LocCookie = 0;
+ const MDNode *LocMD = 0;
+ for (unsigned i = getNumOperands(); i != 0; --i) {
+ if (getOperand(i-1).isMetadata() &&
+ (LocMD = getOperand(i-1).getMetadata()) &&
+ LocMD->getNumOperands() != 0) {
+ if (const ConstantInt *CI = dyn_cast<ConstantInt>(LocMD->getOperand(0))) {
+ LocCookie = CI->getZExtValue();
+ break;
+ }
+ }
+ }
+
+ if (const MachineBasicBlock *MBB = getParent())
+ if (const MachineFunction *MF = MBB->getParent())
+ return MF->getMMI().getModule()->getContext().emitError(LocCookie, Msg);
+ report_fatal_error(Msg);
+}