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2008-01-14Simplify code.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45950 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-14Fix the miscompilation of MiBench/consumer-lame that was exposed by Evan'sChris Lattner
byval work. This miscompilation is due to the program indexing an array out of range and us doing a transformation that broke this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45949 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-14The isNotSuitableForSRA property is now dead, don't compute it.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45948 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-14Change SRAGlobal to not depend on isNotSuitableForSRA, which makes it very Chris Lattner
difficult to understand the invariants. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45947 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-14Make the 'shrink global to bool' optimization more self contained, and thus Chris Lattner
easier to show that its safe. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45946 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-14Turn a memcpy from a double* into a load/store of double instead ofChris Lattner
a load/store of i64. The later prevents promotion/scalarrepl of the source and dest in many cases. This fixes the 300% performance regression of the byval stuff on stepanov_v1p2. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45945 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-13factor memcpy/memmove simplification out to its own SimplifyMemTransfer Chris Lattner
method, no functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45944 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-13simplify some code. If we can infer alignment for source and dest that are Chris Lattner
greater than memcpy alignment, and if we lower to load/store, use the best alignment info we have. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45943 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-13simplify some code by adding a InsertBitCastBefore method,Chris Lattner
make memmove->memcpy conversion a bit simpler. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45942 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-13Whitespace tweak.Duncan Sands
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45940 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-13Remove the assumption that byval has been applied toDuncan Sands
a pointer to a struct. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45939 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-13Allow the byval attribute for pointers to any type withDuncan Sands
a size, not just structs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45938 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-13Fix PR1907, a nasty miscompilation because instcombine didn'tChris Lattner
realize that ne & sgt was a signed comparison (it was only looking at whether the left compare was signed). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45937 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-13Small simplification.Duncan Sands
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45932 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-13When turning a call to a bitcast function into a direct call,Duncan Sands
if this becomes a varargs call then deal correctly with any parameter attributes on the newly vararg call arguments. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45931 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-12improve cygwin compatibility, patch by Sam BishopChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45917 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-12clarify a noteChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45914 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-12Add hasByValArgument() to test if a call instruction has byval argument(s).Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45913 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-12we don't have to make an explicit copy of a byval argument when Chris Lattner
inlining a function if we know that the function does not write to *any* memory. This implements test/Transforms/Inline/byval2.ll git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45912 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-12Indirect call with byval parameter requires a cast first.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45911 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-12Be more liberal in what parameter attributes areDuncan Sands
allowed on the vararg arguments of a call. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45909 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-12Allow clients to specify the inline threshold when creatingChris Lattner
the inliner pass. Patch by Robert Zeh. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45903 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-12Add support for NetBSD, patch by Krister Walfridsson!Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45902 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-12Code clean up.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45898 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-12fix a wordo that gordon noticed :)Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45896 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-12Any x86 instruction that reads from an invariant location is invariant.Chris Lattner
This allows us to sink things like: cvtsi2sd 32(%esp), %xmm1 when reading from the argument area, for example. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45895 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-12implement support for sinking a load out the bottom of a block thatChris Lattner
has no stores between the load and the end of block. This works great and sinks hundreds of stores, but we can't turn it on because machineinstrs don't have volatility information and we don't want to sink volatile stores :( git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45894 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11When DAE drops the varargs part of a function, ensure anyDuncan Sands
attributes on the vararg call arguments are also dropped. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45892 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11More cbe byval fixes.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45891 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11Do not allow attributes beyond a function's lastDuncan Sands
parameter, even if it is a varargs function. Do allow attributes on the varargs part of a call, but not beyond the last argument. Only allow selected attributes to be on the varargs part of a call (currently only 'byval' is allowed). The reasoning here is that most attributes, eg inreg, simply make no sense here. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45887 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11Teach argpromote to ruthlessly hack small byval structs when it canChris Lattner
get away with it, which exposes opportunities to eliminate the memory objects entirely. For example, we now compile byval.ll to: define internal void @f1(i32 %b.0, i64 %b.1) { entry: %tmp2 = add i32 %b.0, 1 ; <i32> [#uses=0] ret void } define i32 @main() nounwind { entry: call void @f1( i32 1, i64 2 ) ret i32 0 } This seems like it would trigger a lot for code that passes around small structs (e.g. SDOperand's or _Complex)... git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45886 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11If there are attributes on the varargs part of aDuncan Sands
call, don't discard them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45884 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11More CellSPU refinements:Scott Michel
- struct_2.ll: Completely unaligned load/store testing - call_indirect.ll, struct_1.ll: Add test lines to exercise X-form [$reg($reg)] addressing At this point, loads and stores should be under control (he says in an optimistic tone of voice.) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45882 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11Use smallptrset instead of std::set for efficiency.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45878 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11a byval argument is guaranteed to be valid to load.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45877 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11Update this code to use eraseFromParent where possible. ComputeChris Lattner
whether an argument is byval and pass into isSafeToPromoteArgument. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45876 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11replace a loop with a constant time check.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45875 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11another minor datastructure tweak.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45874 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11start using smallvector to avoid vector heap thrashing.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45873 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11rename MachineInstr::setInstrDescriptor -> setDescChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45871 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11remove xchg and shift-reg-by-1 instructions, which are dead.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45870 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11add a note, remove a done deed.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45869 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11hrm - correct spelling.Arnold Schwaighofer
Actually were not riding any arguments. Sadly there is no semantic spell checker that is going to safe you from such a mistake. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45868 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11Improve tail call optimized call's argument lowering. Before thisArnold Schwaighofer
commit all arguments where moved to the stack slot where they would reside on a normal function call before the lowering to the tail call stack slot. This was done to prevent arguments overwriting each other. Now only arguments sourcing from a FORMAL_ARGUMENTS node or a CopyFromReg node with virtual register (could also be a caller's argument) are lowered indirectly. --This line, and those below, will be ignored-- M X86/X86ISelLowering.cpp M X86/README.txt git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45867 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11Correct a copy and paste error.Arnold Schwaighofer
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45865 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11Some C backend ByVal parameter attribute support. Not yet complete.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45864 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11Rename Int_CVTSI642SSr* to Int_CVTSI2SS64r* for naming consistency and ↵Evan Cheng
remove unused instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45861 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11more flags set rightChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45860 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11add some missing flags.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45859 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-11add some notes.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45854 91177308-0d34-0410-b5e6-96231b3b80d8
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