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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.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46635 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2008-02-01 09:10:45 +00:00
parent a647c92ec2
commit 1b08bbca55
8 changed files with 29 additions and 59 deletions
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10
lib/Target/PowerPC/PPCRegisterInfo.cpp
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@@ -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) {