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2008-09-04Document function notes.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55808 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-04For whatever the reason, x86 CallingConv::Fast (i.e. fastcc) was not passing ↵Evan Cheng
scalar arguments in registers. This patch defines a new fastcc CC which is slightly different from the FastCall CC. In addition to passing integer arguments in ECX and EDX, it also specify doubles are passed in 8-byte slots which are 8-byte aligned (instead of 4-byte aligned). This avoids a potential performance hazard where doubles span cacheline boundaries. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55807 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-04A loop may be unswitched multiple times. Reconstruct dom info. at the end.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55806 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-04Adjust tests to expect new math intrinsics to beDale Johannesen
emitted only when errno is not in use. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55797 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-04If function notes say optimize for size, then adjust alignment.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55794 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-04Add an include of SmallSet.h.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55793 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-04Initialize loop data first.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55792 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-04Neaten this up a bit. No functionality change.Duncan Sands
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55789 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-04Do not unswitch if the function notes say we're optimizing this function for ↵Devang Patel
size. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55786 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-04try to seperate the mechanism into something others can useAndrew Lenharth
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55785 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-04Adjust libcalls tests to expect intrinsic for exp2Dale Johannesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55784 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-04Add intrinsic forms of pow and exp2. The non-intrinsicDale Johannesen
forms remain to handle older IR files, but will go away soon. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55781 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-04Tidy up several unbeseeming casts from pointer to intptr_t.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55779 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-04Fix the ordering of operands to the store (inverted relative to LLVM IR), ↵Owen Anderson
and fix the testcase. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55777 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-04Clean up uses of TargetLowering::getTargetMachine.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55769 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-04cleanup as per Duncan's reviewAndrew Lenharth
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55766 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-04Add a first attempt at implementing stores for X86 fast isel using target hooks.Owen Anderson
Dan or Evan, please review. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55764 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-04Load from GV stub should be locally CSE'd.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55763 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-04Fix an overly strict assertion. Source register of a copy may not be killed, ↵Evan Cheng
it may be killed by an implicit super-register use. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55762 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-04Remove code that pad number of bytes to pop for X86_FastCall CC. The code ↵Evan Cheng
doesn't do the "aligning" for Cygwin, Mingw, and Windows. But aligning it on Darwin and Linux breaks gcc compatibility. That ruled out all the platforms we support! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55756 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-04Add intrinsics for log, log2, log10, exp, exp2.Dale Johannesen
No functional change (and no FE change to generate them). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55753 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03Do trivial local CSE for constants and other non-Instruction valuesDan Gohman
in FastISel. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55748 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03Put RegsForValue in the llvm namespace to avoid warnings aboutDan Gohman
classes in the llvm namespace having members with types from anonymous namespaces. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55747 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03Create HandlePHINodesInSuccessorBlocksFast, a version ofDan Gohman
HandlePHINodesInSuccessorBlocks that works FastISel-style. This allows PHI nodes to be updated correctly while using FastISel. This also involves some code reorganization; ValueMap and MBBMap are now members of the FastISel class, so they needn't be passed around explicitly anymore. Also, SelectInstructions is changed to SelectInstruction, and only does one instruction at a time. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55746 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03Update inline threshold for current function if the notes say, optimize for ↵Devang Patel
size. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55745 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03Fix a bug that prevented PRE from applying in some cases.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55744 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03Avoid extra comma.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55742 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03Parse and print opt_size note.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55740 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03Initial version of a Partial Specialization IPO pass. It triggers a couple ↵Andrew Lenharth
hundred times on 176.gcc. I don't know the performance impact yet, the heuristic is quite simple still. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55734 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03Do not emit a UsedDirective for things in the llvm.usedDale Johannesen
list that have internal linkage; the linker doesn't need or want this. (These objects must still be preserved at compile time, so just removing them from the llvm.used list doesn't work.) Should affect only Darwin. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55722 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03Fix typo in a comment.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55720 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03Add missing decls.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55719 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03Add parentheses to make code more readable.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55717 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03Fix comments.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55716 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03Testcase for commits 55700 and 55714.Duncan Sands
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55715 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03If a SCC has a node without a function, then the SCCDuncan Sands
analysis would bail out without removing function records for other members of the SCC (which may exist if those functions read or wrote global variables). Since these are initialized to "readnone", this resulted in incorrect alias analysis results. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55714 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03Add custom inliner that handles only functions that are marked as always_inline.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55713 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03Handle "always inline" note during inline cost analysis.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55712 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03Check noinline note and ignore other notes.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55711 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03Handle "noinline" note inside the simple inliner.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55708 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03Oops, I accidentally broke the fallback case with my last commit.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55704 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03Fix an issue where we were reusing materializations of constants in blocks ↵Owen Anderson
not dominated by the materialization. This is the simple fix, materializing the constant before every use. It might be better to either track domination of uses or to materialize all constants and the beginning of the function and let remat sort when to do materialization at uses. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55703 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03Update test to check call instruction.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55702 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03Split the SelectionDAG-building code, including the FunctionLoweringInfoDan Gohman
and SelectionDAGLowering classes, out of SelectionDAGISel.cpp and put it in a separate file, SelectionDAGBuild.cpp. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55701 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03Fix maxo bado thinko.Duncan Sands
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55700 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03Separate MachineInstr-emitting routines from actual schedulingDan Gohman
routines and move them into a separate file, ScheduleDAGEmit.cpp. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55699 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03Fix addRegisterDead and addRegisterKilled to be more thoroughDan Gohman
when searching for redundant subregister dead/kill bits. Previously it was common to see instructions marked like this: "RET %EAX<imp-use,kill>, %AX<imp-use,kill>" With this change, addRegisterKilled continues scanning after finding the %EAX operand, so it proceeds to discover the redundant %AX kill and eliminates it, producing this: "RET %EAX<imp-use,kill>" This currently has no effect on the generated code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55698 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03Since onlyReadsMemory returns true if in factDuncan Sands
doesNotAccessMemory, check doesNotAccessMemory first, since otherwise functions may be marked readonly rather than readnone. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55697 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03Cleanup GlobalsModRef a bit. When analysing theDuncan Sands
callgraph, when one member of a SCC calls another then the analysis would drop to mod-ref because there is (usually) no function info for the callee yet; fix this. Teach the analysis about function attributes, in particular the readonly attribute (which requires being careful about globals). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55696 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-03Testcase for PR1678.Duncan Sands
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55695 91177308-0d34-0410-b5e6-96231b3b80d8