llvm-svn: 99743

nodes all have an EFLAGS result when made by isel lowering.

llvm-svn: 99736

llvm-svn: 99700

llvm-svn: 99686

Remove much horribleness from X86InstrFormats as a result. Similar
simplifications are probably possible for other targets.

llvm-svn: 99539

handles dead implicit results more aggressively.  More
to come, I think this is now just a data entry problem.

llvm-svn: 99486

        addl    $12, %esp
        popl    %esi
        popl    %edi
        popl    %ebx
        popl    %ebp
        jmpl    *__Block_deallocator-L1$pb(%esi)  # TAILCALL

The problem is the global base register is assigned GR32 register class. TCRETURNmi needs the registers making up the address mode to have the GR32_TC register class.

The *proper* fix is for X86DAGToDAGISel::getGlobalBaseReg() to return a copy from the global base register of the machine function rather than returning the register itself. But that has the potential of causing it to be coalesced to a more restrictive register class: GR32_TC. It can introduce additional copies and spills. For something as important the PIC base, it's not worth it especially since this is not an issue on 64-bit.

llvm-svn: 99455

and defining the add pattern with Pat<>, eliminating a use of
parallel.

llvm-svn: 99375

llvm-svn: 99370

ISD node.  The only change in the generated isel code are comments
like:

<                 // Src: (X86dec_flag:i16 GR16:i16:$src)
---
>                 // Src: (X86dec_flag:i16:i32 GR16:i16:$src)

because now it knows that X86dec_flag returns both an i16 (for the result)
and an i32 (for EFLAGS) in this case.  Wewt.

llvm-svn: 99369

llvm-svn: 99359

llvm-svn: 99358

that they are dead.

llvm-svn: 99000

dag isel gen instead of instruction properties.  This
allows the oh-so-useful behavior of matching a variadic
non-root node.

llvm-svn: 98934

can't match or just have no testcases.  Will remove after 
confirmation from dan that they really are dead.

llvm-svn: 98930

to input patterns, we can fix X86ISD::CMP and X86ISD::BT as taking
two inputs (which have to be the same type) and *returning an i32*.
This is how the SDNodes get made in the graph, but we weren't able
to model it this way due to deficiencies in the pattern language.

Now we can change things like this:

 def UCOM_FpIr80: FpI_<(outs), (ins RFP80:$lhs, RFP80:$rhs), CompareFP,
-                  [(X86cmp RFP80:$lhs, RFP80:$rhs),
-                   (implicit EFLAGS)]>; // CC = ST(0) cmp ST(i)
+                  [(set EFLAGS, (X86cmp RFP80:$lhs, RFP80:$rhs))]>;

and fix terrible crimes like this:

-def : Pat<(parallel (X86cmp GR8:$src1, 0), (implicit EFLAGS)),
+def : Pat<(X86cmp GR8:$src1, 0),
           (TEST8rr GR8:$src1, GR8:$src1)>;

This relies on matching the result of TEST8rr (which is EFLAGS, which is
an implicit def) to the result of X86cmp, an i32.

llvm-svn: 98903

llvm-svn: 98864

with the integrated assembler!

llvm-svn: 98615

the operand type.

llvm-svn: 98507

PR4841.  Patch by Craig Smith!

llvm-svn: 98496

Do not force indirect tailcall through fixed registers: eax, r11. Add support to allow loads to be folded to tail call instructions.

llvm-svn: 98465

MC/X86: Rename alternate spellings of ADD{8,16,32} and mark as "code gen only" so they don't get selected by the asm matcher.

llvm-svn: 98098

MC/X86: Rename alternate spellings of CMP{8,16,32} and mark as "code gen only" so they don't get selected by the asm matcher.

llvm-svn: 98097

for the encoding and is not the same as vmptrld.

llvm-svn: 97992

llvm-svn: 97982

llvm-svn: 97957

llvm-svn: 97888

We cannot use a normal call here since it has extra unmodelled side
effects (it changes stack pointer). This should fix PR5292.

llvm-svn: 97884

These instructions technically define AL,AH, but a trick in X86ISelDAGToDAG
reads AX in order to avoid reading AH with a REX instruction.

Fix PR6489.

llvm-svn: 97742

better done by dag combine.

llvm-svn: 97633

'dsload' pattern.  tblgen doesn't check patterns to see if they're
textually identical.  This allows better factoring.

llvm-svn: 97630

that they are not destination type specific.  This allows
tblgen to factor them and the type check is redundant with
what the isel does anyway.

llvm-svn: 97629

llvm-svn: 97348

instead of %AL/%AH.

llvm-svn: 97006

though some look dubious afaict, these are all ok.

llvm-svn: 96899

tables.

llvm-svn: 96073

llvm-svn: 96065

fix swapgs to be spelled right.

llvm-svn: 96058

is pc relative or not, mark call and branches as pcrel.

llvm-svn: 96026

llvm-svn: 96011