1.
[(set GR32:$dst, (add GR32:$src1, GR32:$src2)),
 (modify EFLAGS)]
This indicates the source pattern expects the instruction would produce 2 values. The first is the result of the addition. The second is an implicit definition in register EFLAGS.
2.
def : Pat<(parallel (addc GR32:$src1, GR32:$src2), (modify EFLAGS)), ()>
Similar to #1 except this is used for def : Pat patterns.

llvm-svn: 41897

llvm-svn: 41893

using it for live-in values etc.

llvm-svn: 41879

llvm-svn: 41876

Next round of x87 long double stuff.
Getting close now, basically works.

llvm-svn: 41875

(could break hash table in ConstantFP)

llvm-svn: 41874

llvm-svn: 41873

same time. Do not mark the "smaller" def as dead.

llvm-svn: 41871

llvm-svn: 41863

llvm-svn: 41862

llvm-svn: 41859

access to bits).  Use them in place of float and
double interfaces where appropriate.
First bits of x86 long double constants handling 
(untested, probably does not work).

llvm-svn: 41858

information for EH.

llvm-svn: 41852

of their elements do not yield the same ParamAttrsList,
though they should.  On the other hand, everyone seems
to pass such vectors with elements ordered by increasing
index, so rather than sorting the elements simply assert
that the elements are ordered in this way.

llvm-svn: 41845

nested function.

llvm-svn: 41844

init_trampoline.  There is now only one
trampoline intrinsic.

llvm-svn: 41841

llvm-svn: 41840

that global stub instead of doing the ".set" thingy we were doing before.

llvm-svn: 41838

llvm-svn: 41833

llvm-svn: 41829

llvm-svn: 41826

llvm-svn: 41823

llvm-svn: 41822

llvm-svn: 41821

llvm-svn: 41819

llvm-svn: 41818

llvm-svn: 41817

llvm-svn: 41816

llvm-svn: 41815

llvm-svn: 41812

llvm-svn: 41810

llvm-svn: 41809

llvm-svn: 41808

        cmpl    %eax, %ecx
        setae   %al
        movzbl  %al, %eax

instead of:

        cmpl    %eax, %ecx
        setb    %al
        xorb    $1, %al
        movzbl  %al, %eax

when using logical not of a C comparison.

llvm-svn: 41807

2. Lower calls to fabs and friends to FABS nodes etc unless the function has
   internal linkage.  Before we wouldn't lower if it had a definition, which
   is incorrect.  This allows us to compile:

define double @fabs(double %f) {
        %tmp2 = tail call double @fabs( double %f )
        ret double %tmp2
}

into:

_fabs:
        fabs f1, f1
        blr 

llvm-svn: 41805

llvm-svn: 41804

instruction. These are implemented with xor which will modify the conditional
code. They should be rematerialized as move instructions.

llvm-svn: 41802

llvm-svn: 41800

llvm-svn: 41798

llvm-svn: 41792