Remove HexagonTargetMachine::addPassesForOptimizations; it is not needed any more.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207800 91177308-0d34-0410-b5e6-96231b3b80d8
[IR] Make {extract,insert}element accept an index of any integer type.

Given the following C code llvm currently generates suboptimal code for
x86-64:

__m128 bss4( const __m128 *ptr, size_t i, size_t j )
{
    float f = ptr[i][j];
    return (__m128) { f, f, f, f };
}

=================================================

define <4 x float> @_Z4bss4PKDv4_fmm(<4 x float>* nocapture readonly %ptr, i64 %i, i64 %j) #0 {
  %a1 = getelementptr inbounds <4 x float>* %ptr, i64 %i
  %a2 = load <4 x float>* %a1, align 16, !tbaa !1
  %a3 = trunc i64 %j to i32
  %a4 = extractelement <4 x float> %a2, i32 %a3
  %a5 = insertelement <4 x float> undef, float %a4, i32 0
  %a6 = insertelement <4 x float> %a5, float %a4, i32 1
  %a7 = insertelement <4 x float> %a6, float %a4, i32 2
  %a8 = insertelement <4 x float> %a7, float %a4, i32 3
  ret <4 x float> %a8
}

=================================================

        shlq    $4, %rsi
        addq    %rdi, %rsi
        movslq  %edx, %rax
        vbroadcastss    (%rsi,%rax,4), %xmm0
        retq

=================================================

The movslq is uneeded, but is present because of the trunc to i32 and then
sext back to i64 that the backend adds for vbroadcastss.

We can't remove it because it changes the meaning. The IR that clang
generates is already suboptimal. What clang really should emit is:

  %a4 = extractelement <4 x float> %a2, i64 %j

This patch makes that legal. A separate patch will teach clang to do it.

Differential Revision: http://reviews.llvm.org/D3519

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207801 91177308-0d34-0410-b5e6-96231b3b80d8
[Stackmaps] Replace the custom ConstantPool class with a MapVector.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207803 91177308-0d34-0410-b5e6-96231b3b80d8
[Stackmaps] Refactor serialization code. No functional change intended.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207804 91177308-0d34-0410-b5e6-96231b3b80d8
[Stackmaps] Add command line option to specify the stackmap version.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207805 91177308-0d34-0410-b5e6-96231b3b80d8
[Stackmaps] Pacify windows buildbot.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207807 91177308-0d34-0410-b5e6-96231b3b80d8