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add a bunch more notes. I survived.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115418 91177308-0d34-0410-b5e6-96231b3b80d8
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Chris Lattner
2010-10-02 19:32:01 +00:00
parent b539b76038
commit eb6f5936a1
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@ -125,6 +125,34 @@ Almost dead code.
AVX support in the MC assembler. Full compiler support not done yet. AVX support in the MC assembler. Full compiler support not done yet.
Atomics now get legalized when not natively supported (jim g) Atomics now get legalized when not natively supported (jim g)
ARM: General performance work and tuning. ARM: General performance work and tuning.
Bottom up fast isel. Simple Load reuse. No more machinedce. Load folding at -O0?
New linker_private_weak and linker_private_weak_def_auto linkage types
compiler_rt softfloat support.
X86 ABI: <2 x float> in IR no longer maps onto MMX, it turns into <4 x float>
IR ABI: <3 x float> is passed as <4 x float> instead of 3 floats.
renamed "Release" -> "Release+Asserts"; "Release-Asserts" -> "Release etc.
New COPY instruction. copyRegToReg -> copyPhysReg, isMoveInstr is gone.
JumpThreading much more aggressive about implied value relations.
New RegionInfo pass "opt -regions analyze" or "opt -view-regions".
mc assembler supports macros.
RenderMachineFunction: -rendermf
SplitKit?
Evan: Teach bottom up pre-ra scheduler to track register pressure. Work in progress.
Evan: Add an ILP scheduler. On x86_64, this is a win for all tests in CFP2000. It also sped up 256.bzip2 by 16%.
RegisterPass<> -> INTIALIZE_PASS()
llvm-diff?
Preliminary work on TBAA but not usable in 2.8.
Atomic lowering patch: -loweratomic (see Passes.html#loweratomic)
compiler_rt now includes extensive a fairly testsuite for blocks language feature and the blocks runtime.
New OptimizeExts+OptimizeCmps -> PeepholeOptimizer pass
Triples are now stored in normalized form. Triple::normalize.
New LocalStackSlotAllocation.cpp pass (jimg)
New llvm.x86.int intrinsic (for int $42 and int3)
New CorrelatedValuePropagation pass, not on by default in 2.8 yet.
Verbose assembly decodes X86 shuffle instructions, e.g.:
insertps $113, %xmm3, %xmm0 ## xmm0 = zero,xmm0[1,2],xmm3[1]
unpcklps %xmm1, %xmm0 ## xmm0 = xmm0[0],xmm1[0],xmm0[1],xmm1[1]
pshufd $1, %xmm1, %xmm1 ## xmm1 = xmm1[1,0,0,0]
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