several fields to make it easier to figure out where bugs might be creeping in.

llvm-svn: 98358

ppc calls copysignl with a 128 bit ppc long double, resulting
in a node that the type legalizer doesn't know how to expand.

llvm-svn: 98357

llvm-svn: 98348

(it seems that FreeBSD doesn't have copysignl).  Done by
removing a bunch of assumptions from the code.  This may also
help with sparc 128 bit floats.

llvm-svn: 98346

whose true value was not Val#0.

llvm-svn: 98336

llvm-svn: 98302

llvm-svn: 98295

llvm-svn: 98293

where we used ot create an MCSymbol for ".".  Now emit an assembler
temporary label and reference it instead of "." textually.

rdar://7739457

llvm-svn: 98292

llvm-svn: 98289

an MCExpr and not an MCSymbol.  Change it to take an MCStreamer,
which is currently unused.

No functionality change.

llvm-svn: 98278

llvm-svn: 98277

llvm-svn: 98268

are inside the function by the target at the point of use.

llvm-svn: 98255

cl = EXTRACT_SUBREG reg1024, 1, is overly conservative. It should check
for overlaps of vr's live interval with the super registers of the
physical register (ECX in this case) and let JoinIntervals() handle checking
the coalescing feasibility against the physical register (cl in this case).

llvm-svn: 98251

llvm-svn: 98225

llvm-svn: 98224

llvm-svn: 98222

Move methods out of line and M-x whitespace-cleanup.
Promote common method arguments to member variables.

llvm-svn: 98207

when it looked past a trunc.

llvm-svn: 98203

llvm-svn: 98202

indicates that an MCSymbol is external or not. (It's true if it's external.)
This will be used to specify the correct information to add to non-lazy
pointers. That will be explained further when this bit is used.

llvm-svn: 98199

No functional effect yet.  This is still evolving and should
not be viewed as final.

llvm-svn: 98195

patch by Micah Villmow for PR6572.

llvm-svn: 98188

llvm-svn: 98181

I'll get this loop right yet.

llvm-svn: 98155

semantic instead of syntactic.  This completes MCization of
darwin/x86[-64]!

llvm-svn: 98145

llvm-svn: 98137

llvm-svn: 98132

for darwin/x86 to be completely mcized.

llvm-svn: 98130

llvm-svn: 98125

llvm-svn: 98124

1. Be careful with cse "cheap" expressions. e.g. constant materialization. Only cse them when the common expression is local or in a direct predecessor. We don't want cse of cheap instruction causing other expressions to be spilled.
2. Watch out for the case where the expression doesn't itself uses a virtual register. e.g. lea of frame object. If the common expression itself is used by copies (common for passing addresses to function calls), don't perform the cse. Since these expressions do not use a register, it creates a live range but doesn't close any, we want to be very careful with increasing register pressure.

Note these are heuristics so machine cse doesn't make register allocator unhappy. Once we have proper live range splitting and re-materialization support in place, these should be evaluated again.

Now machine cse is almost always a win on llvm nightly tests on x86 and x86_64.

llvm-svn: 98121

dead IsPCRel argument.

llvm-svn: 98117

need to be MCized, but the last debug info thing are LEB and
cygwin specific (which the MC api doesn't support yet) and
one specific form of EmitReference which I'll tackle next.

llvm-svn: 98116

llvm-svn: 98109

llvm-svn: 98108

llvm-svn: 98107

llvm-svn: 98106

method.  With this, comments should end up on the same lines as the .byte
directives (for example) and we now get no output with:

$ llc CodeGen/X86/2009-02-12-DebugInfoVLA.ll -o - -filetype=null -asm-verbose

woot.

llvm-svn: 98105