Remove the nasty LABEL hack with a much less evil one. Now llvm.dbg.func.start implies a stoppoint is set. SelectionDAGISel records a new source line but does not create a ISD::LABEL node for this special stoppoint. Asm printer will magically print this label. This ensures nothing is emitted before.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46635 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 0 insertions, 20 deletions

diff --git a/lib/Target/PowerPC/PPCRegisterInfo.cpp b/lib/Target/PowerPC/PPCRegisterInfo.cpp
index fa218263bc..efed072786 100644
--- a/lib/Target/PowerPC/PPCRegisterInfo.cpp
+++ b/lib/Target/PowerPC/PPCRegisterInfo.cpp
@@ -712,16 +712,6 @@ void PPCRegisterInfo::emitPrologue(MachineFunction &MF) const {
   // Prepare for frame info.
   unsigned FrameLabelId = 0;
   
-  // Skip over the debug labels which mark the beginning of the function.
-  if (MMI && MMI->needsFrameInfo()) {
-    unsigned NumLabels = 0;
-    while (NumLabels <= 1 &&
-           MBBI != MBB.end() && MBBI->isDebugLabel()) {
-      ++NumLabels;
-      ++MBBI;
-    }
-  }
-
   // Scan the prolog, looking for an UPDATE_VRSAVE instruction.  If we find it,
   // process it.
   for (unsigned i = 0; MBBI != MBB.end(); ++i, ++MBBI) {
diff --git a/lib/Target/X86/X86RegisterInfo.cpp b/lib/Target/X86/X86RegisterInfo.cpp
index 5f9f290ae7..a0ffd33b21 100644
--- a/lib/Target/X86/X86RegisterInfo.cpp
+++ b/lib/Target/X86/X86RegisterInfo.cpp
@@ -525,16 +525,6 @@ void X86RegisterInfo::emitPrologue(MachineFunction &MF) const {
           X86FI->getCalleeSavedFrameSize() +(-TailCallReturnAddrDelta));
   uint64_t NumBytes = StackSize - X86FI->getCalleeSavedFrameSize();
 
-  // Skip over the debug labels which mark the beginning of the function.
-  if (MMI && MMI->needsFrameInfo()) {
-    unsigned NumLabels = 0;
-    while (NumLabels <= 1 &&
-           MBBI != MBB.end() && MBBI->isDebugLabel()) {
-      ++NumLabels;
-      ++MBBI;
-    }
-  }
-
   // Insert stack pointer adjustment for later moving of return addr.  Only
   // applies to tail call optimized functions where the callee argument stack
   // size is bigger than the callers.