clang-p2996

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Nadav Rotem b078350872 This commit contains a few changes that had to go in together.

1. Simplify xor/and/or (bitcast(A), bitcast(B)) -> bitcast(op (A,B))
   (and also scalar_to_vector).

2. Xor/and/or are indifferent to the swizzle operation (shuffle of one src).
   Simplify xor/and/or (shuff(A), shuff(B)) -> shuff(op (A, B))

3. Optimize swizzles of shuffles:  shuff(shuff(x, y), undef) -> shuff(x, y).

4. Fix an X86ISelLowering optimization which was very bitcast-sensitive.

Code which was previously compiled to this:

movd    (%rsi), %xmm0
movdqa  .LCPI0_0(%rip), %xmm2
pshufb  %xmm2, %xmm0
movd    (%rdi), %xmm1
pshufb  %xmm2, %xmm1
pxor    %xmm0, %xmm1
pshufb  .LCPI0_1(%rip), %xmm1
movd    %xmm1, (%rdi)
ret

Now compiles to this:

movl    (%rsi), %eax
xorl    %eax, (%rdi)
ret

llvm-svn: 153848

2012-04-01 19:31:22 +00:00

clang

Analyzer: Store BugReports directly in a ilist instead of adding another layer of inderection with std::list

2012-04-01 19:30:51 +00:00

compiler-rt

Fix the build on 32 bit hosts.

2012-03-30 21:37:08 +00:00

debuginfo-tests

Revert previous patch as the corresponding clang patch was reverted.

2012-01-26 07:01:33 +00:00

libclc

Switch to BSD/MIT dual license.