llvm-svn: 23041

llvm-svn: 23040

Move the implementation of the fix from Makefile.rules to Makefile. This
ensures that it is only checked on a top-level rebuild, and not in every
single subdirectory. This removes some annoying messages from the build and
numerous executions of config.status if the .in file changes but not
substantively enough to cause the .h file to be modified by config.status.

llvm-svn: 23039

llvm-svn: 23038

project. Thanks to Chris for pointing out this deficiency.

llvm-svn: 23037

around to functions and stuff

llvm-svn: 23036

llvm-svn: 23035

llvm-svn: 23034

to codegen this: float foo() { return 1.245; }

into this:

_foo:
        lis r2, ha16(.CPI_foo_0)
        lfs f1, lo16(.CPI_foo_0)(r2)
        blr

instead of this:

_foo:
        lis r2, ha16(.CPI_foo_0)
        lfs r2, lo16(.CPI_foo_0)(r2)   <-- ouch
        or f1, r2, r2                  <-- ouch
        blr

with the dag isel.

llvm-svn: 23033

llvm-svn: 23032

llvm-svn: 23031

llvm-svn: 23030

llvm-svn: 23029

instructions take a consistent reg class.  Implement ISD::UNDEF in the dag->dag
selector to generate this, fixing UnitTests/2003-07-06-IntOverflow.

llvm-svn: 23028

llvm-svn: 23027

llvm-svn: 23026

Add some foldings to hopefully help the illegal setcc issue, and move some code around.

llvm-svn: 23025

llvm-svn: 23024

Emit the indcall sequence as:

mtctr inreg
mr R12, inreg
btctr

If inreg and R12 aren't coallesced, this reduces the odds of having the mtctr
and btctr in the same dispatch group.  :)

llvm-svn: 23023

llvm-svn: 23022

llvm-svn: 23021

llvm-svn: 23020

llvm-svn: 23019

llvm-svn: 23018

Regression/Transforms/SimplifyLibCalls/floor.ll.  This triggers 19 times in
177.mesa.

llvm-svn: 23017

llvm-svn: 23016

in mesa.

llvm-svn: 23015

llvm-svn: 23014

select.  Also teach it that the bit count instructions can only set the low bits
of the result, depending on the size of the input.

This allows us to compile this:

int %eq0(int %a) {
        %tmp.1 = seteq int %a, 0                ; <bool> [#uses=1]
        %tmp.2 = cast bool %tmp.1 to int                ; <int> [#uses=1]
        ret int %tmp.2
}

To this:

_eq0:
        cntlzw r2, r3
        srwi r3, r2, 5
        blr

instead of this:

_eq0:
        cntlzw r2, r3
        rlwinm r3, r2, 27, 31, 31
        blr

when setcc is marked illegal on ppc (which restores parity to non-illegal
setcc).  Thanks to Nate for pointing this out.

llvm-svn: 23013

llvm-svn: 23012

llvm-svn: 23011

llvm-svn: 23010

llvm-svn: 23009

Wrap a line.

llvm-svn: 23008

projects to compile properly.

llvm-svn: 23007

Make any header files that are automatically generated be preconditions of
the compilation. This ensures that if a *.h.in file is changed then its
corresponding *.h file gets updated on the next rebuild. Note that this can
lead to confusing (but correct) results if the *.h.in file changed
unsubstantially so that autoheader doesn't update the *.h file. In that case,
manually touch the *.h file in question to restore order. Moral of the story,
if you're going to "touch" a *.in file then modify it substantially.

llvm-svn: 23006

These patches make threading optional in LLVM. The configuration scripts are now
modified to accept a --disable-threads switch. If this is used, the Mutex class
will be implemented with all functions as no-op. Furthermore, linking against
libpthread will not be done. Finally, the ParallelJIT example needs libpthread
so its makefile was changed to always add -lpthread to the link line.

llvm-svn: 23003

target independent code in SelectionDAG.cpp

llvm-svn: 23002

Prefer 'neg X' to 'subfic 0, X' since neg does not set XER[CA]

llvm-svn: 23001

Prefer 'neg X' to 'subfic 0, X' since it does not set XER[CA]

llvm-svn: 23000