llvm-svn: 45033

llvm-svn: 45032

llvm-svn: 45031

llvm-svn: 45030

Fix ctlz and cttz. llvm definition requires them to return number of bits in of the src type when value is zero.

llvm-svn: 45029

llvm-svn: 45028

All MMX shift instructions took a <2 x i32> vector as the shift amount parameter. Change this to be <1 x i64> instead, which matches the assembler instruction.

llvm-svn: 45027

llvm-svn: 45024

side effects for machine instructions.

llvm-svn: 45022

still be done in the LLVM code generator. And update the summary for the
X86 target.

llvm-svn: 45013

Let: %q = GEP %p, X, ...
If %p is a GEP, we can chase baseptr further, only if X==0.

llvm-svn: 44999

llvm-svn: 44997

llvm-svn: 44987

Remove ugly and horrible code.  It's not necessary for correctness, and can be added back later if it causes code quality issues.

llvm-svn: 44986

llvm-svn: 44981

llvm-svn: 44980

llvm-svn: 44979

platform like Darwin.

llvm-svn: 44977

llvm-svn: 44973

llvm-svn: 44970

llvm-svn: 44969

llvm-svn: 44965

llvm-svn: 44961

Implicit def instructions, e.g. X86::IMPLICIT_DEF_GR32, are always re-materializable and they should not be spilled.

llvm-svn: 44960

put it in a new header System/Host.h instead.
Instead of getting the endianness from configure,
calculate it directly.

llvm-svn: 44959

llvm-svn: 44955

SelectionDAG::getConstant, in the same way as vector floating-point
constants. This allows the legalize expansion code for @llvm.ctpop and
friends to be usable with vector types.

llvm-svn: 44954

our life during future GraphTraits'ing slightly easier.

llvm-svn: 44952

and readnone for functions with bodies because it
broke llvm-gcc-4.2 bootstrap.  It turns out that,
because of LLVM's array_ref hack, gcc was computing
pure/const attributes wrong (now fixed by turning
off the gcc ipa-pure-const pass).

llvm-svn: 44937

2. Using zero-extended value of Scale and unsigned division is safe provided
   that Scale doesn't have the sign bit set.
   Previously these 2 instructions:
        %p = bitcast [100 x {i8,i8,i8}]* %x to i8*
        %q = getelementptr i8* %p, i32 -4
   were combined into:
        %q = getelementptr [100 x { i8, i8, i8 }]* %x, i32 0,
               i32 1431655764, i32 0
   what was incorrect.

llvm-svn: 44936

llvm-svn: 44934

llvm-svn: 44933

llvm-svn: 44929

llvm-svn: 44928

Lower a build_vector with all constants into a constpool load unless it can be done with a move to low part.

llvm-svn: 44921

not support it.

llvm-svn: 44914

Make lli interpreter correctly call external functions sin()/cos(),
__cxa_guard_acquire() and __cxa_guard_release().

llvm-svn: 44910

pointing this out and correcting the patch!

llvm-svn: 44907

llvm-svn: 44905

llvm-svn: 44904