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* Fix this to work correctly with phis; test case to follow if this successfullyJohn McCall2011-05-291-0/+1
| | | | | | | | fixes self-host. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132275 91177308-0d34-0410-b5e6-96231b3b80d8
* Implement and document the llvm.eh.resume intrinsic, which isJohn McCall2011-05-281-62/+181
| | | | | | | | | | | | | | | | | | | transformed by the inliner into a branch to the enclosing landing pad (when inlined through an invoke). If not so optimized, it is lowered DWARF EH preparation into a call to _Unwind_Resume (or _Unwind_SjLj_Resume as appropriate). Its chief advantage is that it takes both the exception value and the selector value as arguments, meaning that there is zero effort in recovering these; however, the frontend is required to pass these down, which is not actually particularly difficult. Also document the behavior of landing pads a bit better, and make it clearer that it's okay that personality functions don't always land at landing pads. This is just a fact of life. Don't write optimizations that rely on pushing things over an unwind edge. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132253 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix the inliner to maintain the current de facto invoke semantics:John McCall2011-05-271-42/+155
| | | | | | | | | | | | | | | | - the selector for the landing pad must provide all available information about the handlers, filters, and cleanups within that landing pad - calls to _Unwind_Resume must be converted to branches to the enclosing lpad so as to avoid re-entering the unwinder when the lpad claimed it was going to handle the exception in some way This is quite specific to libUnwind-based unwinding. In an effort to not interfere too badly with other unwinders, and with existing hacks in frontends, this only triggers on _Unwind_Resume (not _Unwind_Resume_or_Rethrow) and does nothing with selectors if it cannot find a selector call for either lpad. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132200 91177308-0d34-0410-b5e6-96231b3b80d8
* Teach the inliner to emit llvm.lifetime.start/end, to scope the local variablesNick Lewycky2011-05-221-0/+70
| | | | | | | of the inlinee to the code representing the original function. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131838 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a ton of comment typos found by codespell. Patch byChris Lattner2011-04-151-1/+1
| | | | | | | | Luis Felipe Strano Moraes! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129558 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove PHINode::reserveOperandSpace(). Instead, add a parameter toJay Foad2011-03-301-2/+1
| | | | | | PHINode::Create() giving the (known or expected) number of operands. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128537 91177308-0d34-0410-b5e6-96231b3b80d8
* (Almost) always call reserveOperandSpace() on newly created PHINodes.Jay Foad2011-03-301-0/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128535 91177308-0d34-0410-b5e6-96231b3b80d8
* switch the inliner alignment enforcement stuff to use theChris Lattner2010-12-251-27/+8
| | | | | | | | getOrEnforceKnownAlignment function, which simplifies the code and makes it stronger. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122555 91177308-0d34-0410-b5e6-96231b3b80d8
* when eliding a byval copy due to inlining a readonly function, we haveChris Lattner2010-12-201-4/+43
| | | | | | | to make sure that the reused alloca has sufficient alignment. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122236 91177308-0d34-0410-b5e6-96231b3b80d8
* pull byval processing out to its own helper function.Chris Lattner2010-12-201-56/+72
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122235 91177308-0d34-0410-b5e6-96231b3b80d8
* fix PR8769, a miscompilation by inliner when inlining a function with a byvalChris Lattner2010-12-201-6/+10
| | | | | | | | | argument. The generated alloca has to have at least the alignment of the byval, if not, the client may be making assumptions that the new alloca won't satisfy. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122234 91177308-0d34-0410-b5e6-96231b3b80d8
* improve commentChris Lattner2010-12-061-2/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120994 91177308-0d34-0410-b5e6-96231b3b80d8
* Simplify code. No change in functionality.Benjamin Kramer2010-11-201-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119908 91177308-0d34-0410-b5e6-96231b3b80d8
* Have InlineFunction use SimplifyInstruction rather thanDuncan Sands2010-11-171-9/+11
| | | | | | | | | | hasConstantValue. I was leery of using SimplifyInstruction while the IR was still in a half-baked state, which is the reason for delaying the simplification until the IR is fully cooked. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119494 91177308-0d34-0410-b5e6-96231b3b80d8
* Be more consistent in using ValueToValueMapTy.Rafael Espindola2010-10-131-3/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116387 91177308-0d34-0410-b5e6-96231b3b80d8
* Reapply r112091 and r111922, support for metadata linking, with aDan Gohman2010-08-261-1/+2
| | | | | | | | | | | | | | | fix: add a flag to MapValue and friends which indicates whether any module-level mappings are being made. In the common case of inlining, no module-level mappings are needed, so MapValue doesn't need to examine non-function-local metadata, which can be very expensive in the case of a large module with really deep metadata (e.g. a large C++ program compiled with -g). This flag is a little awkward; perhaps eventually it can be moved into the ClonedCodeInfo class. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112190 91177308-0d34-0410-b5e6-96231b3b80d8
* simplify: CallSite::get --> CallSite constructorGabor Greif2010-07-271-4/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109506 91177308-0d34-0410-b5e6-96231b3b80d8
* use callsite to obtain all argumentsGabor Greif2010-06-241-1/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106728 91177308-0d34-0410-b5e6-96231b3b80d8
* Use ValueMap instead of DenseMap.Devang Patel2010-06-241-3/+3
| | | | | | | The ValueMapper used by various cloning utility maps MDNodes also. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106706 91177308-0d34-0410-b5e6-96231b3b80d8
* Cosmetic change.Devang Patel2010-06-231-8/+8
| | | | | | | Do not use "ValueMap" as a name for a local variable or an argument. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106698 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix PR7272: when inlining through a callsite with byval arguments,Duncan Sands2010-05-311-0/+4
| | | | | | | | the newly created allocas may be used by inlined calls, so these need to have their tail call flags cleared. Fixes PR7272. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105255 91177308-0d34-0410-b5e6-96231b3b80d8
* rename InlineInfo.DevirtualizedCalls -> InlinedCalls toChris Lattner2010-05-011-5/+5
| | | | | | | | reflect that it includes all inlined calls now, not just devirtualized ones. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102824 91177308-0d34-0410-b5e6-96231b3b80d8
* Implement rdar://6295824 and PR6724 with two tiny changesChris Lattner2010-05-011-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | that can have a big effect :). The first is to enable the iterative SCC passmanager juice that kicks in when the scc passmgr detects that a function pass has devirtualized a call. In this case, it will rerun all the passes it manages on the SCC, up to the iteration count limit (4). This is useful because a function pass may devirualize a call, and we want the inliner to inline it, or pruneeh to infer stuff about it, etc. The second patch is to add *all* call sites to the DevirtualizedCalls list the inliner uses. This list is about to get renamed, but the jist of this is that the inliner now reconsiders *all* inlined call sites as candidates for further inlining. The intuition is this that in cases like this: f() { g(1); } g(int x) { h(x); } We analyze this bottom up, and may decide that it isn't profitable to inline H into G. Next step, we decide that it is profitable to inline G into F, and do so, which means that F now calls H. Even though the call from G -> H may not have been profitable to inline, the call from F -> H may be (in this case because a constant allows folding etc). In my spot checks, this doesn't have a big impact on code. For example, the LLC output for 252.eon grew from 0.02% (from 317252 to 317308) and 176.gcc actually shrunk by .3% (from 1525612 to 1520964 bytes). 252.eon never iterated in the SCC Passmgr, 176.gcc iterated at most 1 time. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102823 91177308-0d34-0410-b5e6-96231b3b80d8
* switch InlineInfo.DevirtualizedCalls's list to be of WeakVH.Chris Lattner2010-04-231-1/+1
| | | | | | | | | | This fixes a bug where calls inlined into an invoke would get changed into an invoke but the array would keep pointing to the (now dead) call. The improved inliner behavior is still disabled for now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102196 91177308-0d34-0410-b5e6-96231b3b80d8
* The inliner was choosing to not consider call sitesChris Lattner2010-04-221-2/+7
| | | | | | | | | | | that appear in the SCC as a result of inlining as candidates for inlining. Change this so that it *does* consider call sites that change from being indirect to being direct as a result of inlining. This allows it to completely "devirtualize" the testcase. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102146 91177308-0d34-0410-b5e6-96231b3b80d8
* refactor the interface to InlineFunction so that most of the in/outChris Lattner2010-04-221-21/+21
| | | | | | | | | arguments are handled with a new InlineFunctionInfo class. This makes it easier to extend InlineFunction to return more info in the future. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102137 91177308-0d34-0410-b5e6-96231b3b80d8
* when inlining something like this:Chris Lattner2010-04-221-2/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | define void @f3(void (i8*)* %__f) ssp { entry: call void %__f(i8* undef) unreachable } define void @f4(i8* %this) ssp align 2 { entry: call void @f3(void (i8*)* @f2) ssp ret void } The inliner is turning the indirect call to %__f into a direct call to F2. Make the call graph more precise when this happens. The inliner doesn't revisit call sites introduced by inlining, so there isn't an easy way to test for this, but a more precise callgraph is a good thing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102131 91177308-0d34-0410-b5e6-96231b3b80d8
* eliminate dead #include.Chris Lattner2010-04-221-1/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102119 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert 101465, it broke internal OpenGL testing.Eric Christopher2010-04-161-1/+1
| | | | | | | | Probably the best way to know that all getOperand() calls have been handled is to replace that API instead of updating. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101579 91177308-0d34-0410-b5e6-96231b3b80d8
* reapply r101434Gabor Greif2010-04-161-1/+1
| | | | | | | | | | | | | | with a fix for self-hosting rotate CallInst operands, i.e. move callee to the back of the operand array the motivation for this patch are laid out in my mail to llvm-commits: more efficient access to operands and callee, faster callgraph-construction, smaller compiler binary git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101465 91177308-0d34-0410-b5e6-96231b3b80d8
* back out r101423 and r101397, they break llvm-gcc self-host on darwin10Gabor Greif2010-04-161-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101434 91177308-0d34-0410-b5e6-96231b3b80d8
* reapply r101364, which has been backed out in r101368Gabor Greif2010-04-151-1/+1
| | | | | | | | | | | | | | with a fix rotate CallInst operands, i.e. move callee to the back of the operand array the motivation for this patch are laid out in my mail to llvm-commits: more efficient access to operands and callee, faster callgraph-construction, smaller compiler binary git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101397 91177308-0d34-0410-b5e6-96231b3b80d8
* back out r101364, as it trips the linux nightlybot on some clang C++ testsGabor Greif2010-04-151-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101368 91177308-0d34-0410-b5e6-96231b3b80d8
* rotate CallInst operands, i.e. move callee to the backGabor Greif2010-04-151-1/+1
| | | | | | | | | | | of the operand array the motivation for this patch are laid out in my mail to llvm-commits: more efficient access to operands and callee, faster callgraph-construction, smaller compiler binary git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101364 91177308-0d34-0410-b5e6-96231b3b80d8
* Reapply address space patch after fixing an issue in MemCopyOptimizer.Mon P Wang2010-04-041-5/+6
| | | | | | | | Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset, e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100304 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r100191 since it breaks objc in clang Mon P Wang2010-04-021-6/+5
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100199 91177308-0d34-0410-b5e6-96231b3b80d8
* Reapply address space patch after fixing an issue in MemCopyOptimizer.Mon P Wang2010-04-021-5/+6
| | | | | | | | Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset, e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100191 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert Mon Ping's change 99928, since it broke all the llvm-gcc buildbots.Bob Wilson2010-03-301-6/+5
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99948 91177308-0d34-0410-b5e6-96231b3b80d8
* Added support for address spaces and added a isVolatile field to memcpy, ↵Mon P Wang2010-03-301-5/+6
| | | | | | | | | | memmove, and memset, e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1) A update of langref will occur in a subsequent checkin. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99928 91177308-0d34-0410-b5e6-96231b3b80d8
* Temporarily revert this, it's causing an issue with an internal project.Eric Christopher2010-03-241-3/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99451 91177308-0d34-0410-b5e6-96231b3b80d8
* add some accessors to callsite/callinst/invokeinst to checkChris Lattner2010-03-231-1/+3
| | | | | | | | | for the noinline attribute, and make the inliner refuse to inline a call site when the call site is marked noinline even if the callee isn't. This fixes PR6682. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99341 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove dead debug info intrinsics.Devang Patel2010-01-051-45/+0
| | | | | | | | | | | | Intrinsic::dbg_stoppoint Intrinsic::dbg_region_start Intrinsic::dbg_region_end Intrinsic::dbg_func_start AutoUpgrade simply ignores these intrinsics now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92557 91177308-0d34-0410-b5e6-96231b3b80d8
* Implement support to debug inlined functions.Devang Patel2009-11-101-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86748 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a pretty serious misfeature of the inliner: if it inlines a functionChris Lattner2009-10-271-0/+9
| | | | | | | | | | | | with multiple return values it inserts a PHI to merge them all together. However, if the return values are all the same, it ends up with a pointless PHI and this pointless PHI happens to really block SRoA from happening in at least a silly C++ example written by Doug, but probably others. This fixes rdar://7339069. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85206 91177308-0d34-0410-b5e6-96231b3b80d8
* Simplify some code (first hunk) and fix PR5208 (second hunk) byChris Lattner2009-10-171-8/+6
| | | | | | | updating the callgraph when introducing a call. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84310 91177308-0d34-0410-b5e6-96231b3b80d8
* Introduce and use convenience methods for getting pointer typesDuncan Sands2009-10-061-1/+1
| | | | | | | | where the element is of a basic builtin type. For example, to get an i8* use getInt8PtrTy. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83379 91177308-0d34-0410-b5e6-96231b3b80d8
* Instruction::clone does not need to take an LLVMContext&. Remove that andNick Lewycky2009-09-271-1/+1
| | | | | | | update all the callers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82889 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix comment.Eric Christopher2009-09-061-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81138 91177308-0d34-0410-b5e6-96231b3b80d8
* remove a bunch of explicit code previously needed to update theChris Lattner2009-09-011-27/+7
| | | | | | | callgraph. This is now dead because RAUW does the job. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80703 91177308-0d34-0410-b5e6-96231b3b80d8
* Change CallGraphNode to maintain it's Function as an AssertingVHChris Lattner2009-09-011-1/+1
| | | | | | | | | | | | | for sanity. This didn't turn up any bugs. Change CallGraphNode to maintain its "callsite" information in the call edges list as a WeakVH instead of as an instruction*. This fixes a broad class of dangling pointer bugs, and makes CallGraph have a number of useful invariants again. This fixes the class of problem indicated by PR4029 and PR3601. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80663 91177308-0d34-0410-b5e6-96231b3b80d8
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