D0<def,dead> = ...
...
             = S0<use, kill>
S0<def>      = ...
...
D0<def>      = 

The first D0 def is correctly marked dead, however, livevariables should have
added an implicit def of S0 or we end up with a use without a def.

llvm-svn: 88690

llvm-svn: 88682

because the testcase is triggering one more bug.

llvm-svn: 88674

llvm-svn: 88672

Remove duplicate APIs and state WRT spill objects.

llvm-svn: 87106

"a" + 0.

llvm-svn: 87084

llvm-svn: 87070

llvm-svn: 87069

Switch to smallvector. Also fix issue with using unsigend for MaxSplit.

llvm-svn: 87068

PPC is such a target; make it work.

llvm-svn: 87060

llvm-svn: 87059

llvm-svn: 87058

llvm-svn: 87056

llvm-svn: 87054

llvm-svn: 87049

Fix a bootstrap failure.

Provide special isLoadFromStackSlotPostFE and isStoreToStackSlotPostFE
interfaces to explicitly request checking for post-frame ptr elimination
operands.  This uses a heuristic so it isn't reliable for correctness.

llvm-svn: 87047

llvm-svn: 87042

llvm-svn: 87040

llvm-svn: 87036

llvm-svn: 87035

Do some cleanups suggested by Chris.

llvm-svn: 87034

strings.

llvm-svn: 87031

Set the ReloadReuse AsmPrinter flag where appropriate.

llvm-svn: 87030

llvm-svn: 87029

Fix a build error by providing a missing enum value.

llvm-svn: 87028

Make the MachineFunction argument of getFrameRegister const.

This also fixes a build error.

llvm-svn: 87027

Add hasLoadFromStackSlot and hasStoreToStackSlot to return whether a
machine instruction loads or stores from/to a stack slot.  Unlike
isLoadFromStackSlot and isStoreFromStackSlot, the instruction may be
something other than a pure load/store (e.g. it may be an arithmetic
operation with a memory operand).  This helps AsmPrinter determine when
to print a spill/reload comment.

This is only a hint since we may not be able to figure this out in all
cases.  As such, it should not be relied upon for correctness.

Implement for X86.  Return false by default for other architectures.

llvm-svn: 87026

llvm-svn: 87025

llvm-svn: 87024

and don't assume that the call doesn't throw. It would be nice if there were a
way to determine which is the callee and which is a parameter. In practice, the
architecture we care about normally only have one operand for a call instruction
(x86 and arm).

llvm-svn: 87023

Add a bool flag to StackObjects telling whether they reference spill
slots.  The AsmPrinter will use this information to determine whether to
print a spill/reload comment.

Remove default argument values.  It's too easy to pass a wrong argument
value when multiple arguments have default values.  Make everything
explicit to trap bugs early.

Update all targets to adhere to the new interfaces..

llvm-svn: 87022

StringsEqualNoCase (from StringExtras.h) to it.

llvm-svn: 87020

Make FixedStackPseudoSourceValue a first-class PseudoSourceValue by
making it visible to clients and adding LLVM-style cast capability.
This will be used by AsmPrinter to determine when to emit spill comments
for an instruction.

llvm-svn: 87019

Add AsmPrinter comment flags to machine instructions so that AsmPrinter
can emit extra information in comments.

llvm-svn: 87018

Add comment flags so AsmPrinter can output additional information when
emitting comments.  These flags carry semantic information not otherwise
easily derivable from the IR text.

llvm-svn: 87016

llvm-svn: 87015

"Attach debug info with llvm instructions" mode was enabled a month ago. Now make it permanent and remove old way of inserting intrinsics to encode debug info for line number and scopes.

llvm-svn: 87014

they really are not duplicable.

llvm-svn: 87009

llvm-svn: 87002

to directly follow the jump table. Move the layout changes to prior to any
constant island handling.

llvm-svn: 86999