[llvm-commits] [llvm] r46596 - /llvm/trunk/lib/Target/PowerPC/PPCRegisterInfo.cpp

[Evan Cheng]

Author: evancheng
Date: Wed Jan 30 21:33:38 2008
New Revision: 46596

URL: http://llvm.org/viewvc/llvm-project?rev=46596&view=rev
Log:
Makes the same change in ppc backend: avoid inserting prologue before debug labels.

Modified:
    llvm/trunk/lib/Target/PowerPC/PPCRegisterInfo.cpp

Modified: llvm/trunk/lib/Target/PowerPC/PPCRegisterInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/PowerPC/PPCRegisterInfo.cpp?rev=46596&r1=46595&r2=46596&view=diff

==============================================================================
--- llvm/trunk/lib/Target/PowerPC/PPCRegisterInfo.cpp (original)
+++ llvm/trunk/lib/Target/PowerPC/PPCRegisterInfo.cpp Wed Jan 30 21:33:38 2008
@@ -712,6 +712,16 @@
   // Prepare for frame info.
   unsigned FrameLabelId = 0;
   
+  // Skip over the labels which mark the beginning of the function.
+  if (MMI && MMI->needsFrameInfo()) {
+    unsigned NumLabels = 0;
+    while (NumLabels <= 1 &&
+           MBBI != MBB.end() && MBBI->getOpcode() == PPC::LABEL) {
+      ++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) {