(1) Cannot use ANDN(ot), ORN, and XORN for boolean ops, only bitwise ops.

(2) Conditional move instructions must distinguish signed and unsigned
    condition codes, e.g., MOVLE vs. MOVLEU.

(3) Conditional-move-on-register was using the cond-move-on-cc opcodes,
    which produces a valid-looking instruction with bogus registers!

(4) Here's a really cute one: dividing-by-2^k for negative numbers needs to
    add 2^k-1 before shifting, not add 1 after shifting.  Sadly, these
    are the same when k=0 so our poor test case worked fine.

(5) Casting between signed and unsigned values was not correct:
    completely reimplemented.

(6) Zero-extension on unsigned values was bogus: I was only doing the
    SRL and not the SLLX before it.  Don't know WHAT I was thinking!

(7) And the most important class of changes: Sign-extensions on signed values.
    Signed values are not sign-extended after ordinary operations,
    so they must be sign-extended before the following cases:
	-- passing to an external or unknown function
	-- returning from a function
	-- using as operand 2 of DIV or REM
	-- using as either operand of condition-code setting operation
           (currently only SUBCC), with smaller than 32-bit operands


Also, a couple of improvements:

(1) Fold cast-to-bool into Not(bool).  Need to do this for And, Or, XOR also.

(2) Convert SetCC-Const into a conditional-move-on-register (case 41)
    if the constant is 0.  This was only being done for branch-on-SetCC-Const
    when the branch is folded with the SetCC-Const.

llvm-svn: 7159

llvm-svn: 7158

boolean operations: AND, OR, XOR.

llvm-svn: 7157

llvm-svn: 7156

llvm-svn: 7155

which args can be substituted: defsOnly, defsAndUses or usesOnly.

llvm-svn: 7154

llvm-svn: 7153

(1) An int CC live range must be spilled if there are any interferences,
    even if no other "neighbour" in the interf. graph has been allocated
    that reg. yet.  This is actually true of any class with only one reg!

(2) SparcIntCCRegClass::colorIGNode sets the color even if the LR must
    be spilled so that the machine-independent spill code doesn't have to
    make the machine-dependent decision of which CC name to use based on
    operand type: %xcc or %icc.  (These are two halves of the same
register.)

(3) LR->isMarkedForSpill() is no longer the same as LR->hasColor().
    These should never have been the same, and this is necessary now for #2.

(4) All RDCCR and WRCCR instructions are directly generated with the
    phony number for %ccr so that EmitAssembly/EmitBinary doesn't have to
    deal with this.

llvm-svn: 7152

(1) An int CC live range must be spilled if there are any interferences,
    even if no other "neighbour" in the interf. graph has been allocated
    that reg. yet.  This is actually true of any class with only one reg!

(2) SparcIntCCRegClass::colorIGNode sets the color even if the LR must
    be spilled so that the machine-independent spill code doesn't have to
    make the machine-dependent decision of which CC name to use based on
    operand type: %xcc or %icc.  (These are two halves of the same register.)

(3) LR->isMarkedForSpill() is no longer the same as LR->hasColor().
    These should never have been the same, and this is necessary now for #2.

(4) All RDCCR and WRCCR instructions are directly generated with the
    phony number for %ccr so that EmitAssembly/EmitBinary doesn't have to
    deal with this.

llvm-svn: 7151

llvm-svn: 7150

llvm-svn: 7149

llvm-svn: 7147

llvm-svn: 7142

in a variable assignment.

llvm-svn: 7141

llvm-svn: 7140

llvm-svn: 7139

no functionality changed.

llvm-svn: 7138

llvm-svn: 7135

Corrected capitalization of subheadings.
Created a new subsection for compiling the C front end and moved all references
to it there.
Updated the disk space requirements to reflect the need for the binary C front
end and the optional C front end source.
Added information on unpacking the distribution to the summary section.
Moved autoconf environment variables to the autoconf section.
Changed make to gmake.
Removed some of the precise directions for unpacking the archives.
Fixed some formatting inconsistencies (headings that were not centered).

llvm-svn: 7132

Unfortunately, reallocation also means that the pointer numbering will
change, so increase table size to try to avoid it.

llvm-svn: 7130

taking out the rule for compiling the test driver.
We need the native libraries for libinstr because they are directly
linked into the native CBE or LLC code.  That is the only practical
way to debug them!

llvm-svn: 7129

Also, $(RM) needs -f flag.

llvm-svn: 7128

llvm-svn: 7126

code.  This prevents a compiler warning on Sparc that causes the tests to fail.

llvm-svn: 7125

initializer and the loop index variable already carries the offset information
that we need.

llvm-svn: 7123

llvm-svn: 7122

combined with a '/' separating them.

llvm-svn: 7121

llvm-svn: 7120

some comments.

llvm-svn: 7119

* Made error messages print out what directory failed chdir()
* Put quotes around search arguments to grep
* Use `egrep' instead of `grep -e' because they are equivalent but `grep' does
  not have the `-e' option on Sparc/Solaris
* Added `--enable-jit' to the ./configure command because both X86 and Sparc
  have JITs and we want them to be tested
* Fixed the regular expressions parsing the changes in CVS which were causing
  the script to die

llvm-svn: 7118

llvm-svn: 7117

have access to CVS.

llvm-svn: 7116

instructions, by outputting them as bytes.

llvm-svn: 7115

llvm-svn: 7114

llvm-svn: 7113

llvm-svn: 7112

integer overflow):
We need to use %icc and not %xcc for comparisons on 32-bit or smaller
integer values.

llvm-svn: 7111

of %icc even for 32-bit and smaller comparisons.

llvm-svn: 7110

llvm-svn: 7109

llvm-svn: 7105