[CMake] Move llvm-shlib in prior to other tools.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221590 91177308-0d34-0410-b5e6-96231b3b80d8
[CMake] Let llvm-shlib work on Linux with --whole-archive.

FIXME: It should work on not only Linux but elf-targeting gnu ld.

For example if LLVM_DYLIB_COMPONENTS is "BitWriter Support", CMake emits the command line like;

  -Wl,--whole-archive
    lib/libLLVMBitWriter.a
    lib/libLLVMSupport.a *1
  -Wl,--no-whole-archive
  lib/libLLVMCore.a
  lib/libLLVMSupport.a   *2
  -lrt -ldl -ltinfo -lpthread -lm

It works since symbols in LLVMCore is resolved with not *2 but *1.

Unfortunately, --gc-sections is not powerful in this case to prune unused "visibility(default)" entries.

I am still experimenting other way not to rely on --whole-archive.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221591 91177308-0d34-0410-b5e6-96231b3b80d8
[CMake] llvm-c-test: Use libLLVM.so if it is available.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221592 91177308-0d34-0410-b5e6-96231b3b80d8
Mark test using python as REQUIRES: python27.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221598 91177308-0d34-0410-b5e6-96231b3b80d8
[mips] Fix sret arguments for N32/N64 which were accidentally broken in r221534.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221604 91177308-0d34-0410-b5e6-96231b3b80d8
Fix variable names and comment style. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221608 91177308-0d34-0410-b5e6-96231b3b80d8
[mips][microMIPS] Fix issue with delay slot filler and microMIPS
Differential Revision: http://reviews.llvm.org/D6193


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221612 91177308-0d34-0410-b5e6-96231b3b80d8
Fix extra semicolon warning. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221613 91177308-0d34-0410-b5e6-96231b3b80d8
Misc style fixes. NFC.

This fixes a few cases of:

* Wrong variable name style.
* Lines longer than 80 columns.
* Repeated names in comments.
* clang-format of the above.

This make the next patch a lot easier to read.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221615 91177308-0d34-0410-b5e6-96231b3b80d8
[NVPTX] Add an NVPTX-specific TargetTransformInfo

Summary:
It currently only implements hasBranchDivergence, and will be extended
in later diffs.

Split from D6188.

Test Plan: make check-all

Reviewers: jholewinski

Reviewed By: jholewinski

Subscribers: llvm-commits, meheff, eliben, jholewinski

Differential Revision: http://reviews.llvm.org/D6195

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221619 91177308-0d34-0410-b5e6-96231b3b80d8
Copy externally_initialized in GlobalVariable::copyAttributesFrom.

Patch by Kevin Frei!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221620 91177308-0d34-0410-b5e6-96231b3b80d8
[X86] Fix pattern match for 32-to-64-bit zext in the presence of AssertSext

This fixes an issue with matching trunc -> assertsext -> zext on x86-64, which would not zero the high 32-bits.
See PR20494 for details.

Differential Revision: http://reviews.llvm.org/D6128

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221626 91177308-0d34-0410-b5e6-96231b3b80d8
[SwitchLowering] Fix the "fixPhis" function.

Switch statements may have more than one incoming edge into the same BB if they
all have the same value. When the switch statement is converted these incoming
edges are now coming from multiple BBs. Updating all incoming values to be from
a single BB is incorrect and would generate invalid LLVM IR.

The fix is to only update the first occurrence of an incoming value. Switch
lowering will perform subsequent calls to this helper function for each incoming
edge with a new basic block - updating all edges in the process.

This fixes rdar://problem/18916275.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221627 91177308-0d34-0410-b5e6-96231b3b80d8
[AArch64][FastISel] Fix kill flags for integer extends.

In the case we optimize an integer extend away and replace it directly with the
source register, we also have to clear all kill flags at all its uses.
This is necessary, because the orignal IR instruction might be trivially dead,
but we replaced it with a nop at MI level.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221628 91177308-0d34-0410-b5e6-96231b3b80d8
Reverting r221626 due to a too-strict test.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221629 91177308-0d34-0410-b5e6-96231b3b80d8
configure.ac lives in autoconf/, not autotools/

Patch by Palmer Dabbelt!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221638 91177308-0d34-0410-b5e6-96231b3b80d8
[yaml2obj] Support AArch64 relocations.

Patch by Daniel Stewart <stewartd@codeaurora.org>!
Phabricator Revision: http://reviews.llvm.org/D6192

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221639 91177308-0d34-0410-b5e6-96231b3b80d8
speling.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221652 91177308-0d34-0410-b5e6-96231b3b80d8
[X86] Custom lower UINT_TO_FP from v4f32 to v4i32, and for v8f32 to v8i32 if
AVX2 is available.
According to IACA, the new lowering has a throughput of 8 cycles instead of 13
with the previous one.

Althought this lowering kicks in some SPECs benchmarks, the performance
improvement was within the noise.

Correctness testing has been done for the whole range of uint32_t with the
following program:
    uint4 v = (uint4) {0,1,2,3};
    uint32_t i;
    
    //Check correctness over entire range for uint4 -> float4 conversion
    for( i = 0; i < 1U << (32-2); i++ )
    {
        float4 t = test(v);
        float4 c = correct(v);
        
        if( 0xf != _mm_movemask_ps( t == c ))
        {
            printf( "Error @ %vx: %vf vs. %vf\n", v, c, t);
            return -1;
        }
        
        v += 4;
    }
Where "correct" is the old lowering and "test" the new one.

The patch adds a test case for the two custom lowering instruction.
It also modifies the vector cost model, which is why cast.ll and uitofp.ll are
modified.
2009-02-26-MachineLICMBug.ll is also modified because we now hoist 7
instructions instead of 4 (3 more constant loads).

rdar://problem/18153096>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221657 91177308-0d34-0410-b5e6-96231b3b80d8
Don't repeat name in comment. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221664 91177308-0d34-0410-b5e6-96231b3b80d8