[llvm-commits] [llvm] r42278 - /llvm/trunk/lib/Target/X86/X86ISelLowering.cpp

[Dan Gohman]

Author: djg
Date: Mon Sep 24 16:54:14 2007
New Revision: 42278

URL: http://llvm.org/viewvc/llvm-project?rev=42278&view=rev
Log:
Add support on x86 for having Legalize lower ISD::LOCATION to ISD::DEBUG_LOC
instead of ISD::LABEL with a manual .debug_line entry when the assembler
supports .file and .loc directives.

Modified:
    llvm/trunk/lib/Target/X86/X86ISelLowering.cpp

Modified: llvm/trunk/lib/Target/X86/X86ISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86ISelLowering.cpp?rev=42278&r1=42277&r2=42278&view=diff

==============================================================================
--- llvm/trunk/lib/Target/X86/X86ISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86ISelLowering.cpp Mon Sep 24 16:54:14 2007
@@ -32,6 +32,7 @@
 #include "llvm/CodeGen/SelectionDAG.h"
 #include "llvm/CodeGen/SSARegMap.h"
 #include "llvm/Support/MathExtras.h"
+#include "llvm/Target/TargetAsmInfo.h"
 #include "llvm/Target/TargetOptions.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/ParameterAttributes.h"
@@ -229,9 +230,13 @@
   setOperationAction(ISD::MEMSET          , MVT::Other, Custom);
   setOperationAction(ISD::MEMCPY          , MVT::Other, Custom);
 
-  // We don't have line number support yet.
+  // Use the default ISD::LOCATION expansion, and tell Legalize it's
+  // ok to use DEBUG_LOC if we have an assembler that supports it.
   setOperationAction(ISD::LOCATION, MVT::Other, Expand);
-  setOperationAction(ISD::DEBUG_LOC, MVT::Other, Expand);
+  if (TM.getTargetAsmInfo()->hasDotLocAndDotFile())
+    setOperationAction(ISD::DEBUG_LOC, MVT::Other, Legal);
+  else
+    setOperationAction(ISD::DEBUG_LOC, MVT::Other, Expand);
   // FIXME - use subtarget debug flags
   if (!Subtarget->isTargetDarwin() &&
       !Subtarget->isTargetELF() &&