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path: root/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
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2011-12-02Move global variables in TargetMachine into new TargetOptions class. As an APINick Lewycky
change, now you need a TargetOptions object to create a TargetMachine. Clang patch to follow. One small functionality change in PTX. PTX had commented out the machine verifier parts in their copy of printAndVerify. That now calls the version in LLVMTargetMachine. Users of PTX who need verification disabled should rely on not passing the command-line flag to enable it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145714 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-28Remove dead llvm.eh.sjlj.dispatchsetup intrinsic.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145263 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-22Fix an obvious omission in the SelectionDAGBuilder where we wereChandler Carruth
dropping weights on the floor for invokes. This was impeding my writing further test cases for invoke when interacting with probabilities and block placement. No test case as there doesn't appear to be a way to test this stuff. =/ Suggestions for a test case of course welcome. I hope to be able to add test cases that indirectly cover this eventually by adding probabilities to the exceptional edge and reordering blocks as a result. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145060 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-15Remove some unnecessary includes of PseudoSourceValue.h.Jay Foad
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144634 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-08Added invariant field to the DAG.getLoad method and changed all calls.Pete Cooper
When this field is true it means that the load is from constant (runt-time or compile-time) and so can be hoisted from loops or moved around other memory accesses git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144100 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-26Don't use floating point to do an integer's job.Jakob Stoklund Olesen
This code makes different decisions when compiled into x87 instructions because of different rounding behavior. That caused phase 2/3 miscompares on 32-bit Linux when the phase 1 compiler was built with gcc (using x87), and the phase 2 compiler was built with clang (using SSE). This fixes PR11200. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143006 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-18Fix a bunch of unused variable warnings when doing a releaseDuncan Sands
build with gcc-4.6. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142350 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-18Fix comment to refer to correct instructionHal Finkel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142334 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-15Clear out the landing pad to call site map for each function.Bill Wendling
This isn't put into the 'clear()' method because the information needs to stick around (at least for a little bit) after the selection DAG is built. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142032 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-12Encode register class constreaints in inline asm instructions.Jakob Stoklund Olesen
The inline asm operand constraint is initially encoded in the virtual register for the operand, but that register class may change during coalescing, and the original constraint is lost. Encode the original register class as part of the flag word for each inline asm operand. This makes it possible to recover the actual constraint required by inline asm, just like we can for normal instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141833 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-12Use a utility from MathExtras to clarify a check and avoid undefined ↵Eli Friedman
behavior. Based on patch by Ahmed Charles. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141829 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-07Thread the chain through the eh.sjlj.setjmp intrinsic, like it's documented toBill Wendling
do. This will be useful later on with the new SJLJ stuff. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141416 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-06Remove the old atomic instrinsics. autoupgrade functionality is included ↵Eli Friedman
with this patch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141333 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-05Modify the mapping from landing pad to call sites to accept more than one callBill Wendling
site. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141226 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-04Create a mapping between the landing pad basic block and the call site index ↵Bill Wendling
for later use. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141125 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-30Promote comment to doxycomment. Adjust whitespace. No functionality change.Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140899 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-29Clean up uses of switch instructions so they are not dependent on the ↵Eli Friedman
operand ordering. Patch by Stepan Dyatkovskiy. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140803 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-29Use the local we already set up.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140745 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-28Strip off pointer casts when looking at the eh.sjlj.functioncontext's argument.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140678 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-28Create and use an llvm.eh.sjlj.functioncontext intrinsic.Bill Wendling
This intrinsic is used to pass the index of the function context to the back-end for further processing. The back-end is in charge of filling in the rest of the entries. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@140676 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-13Fix check for unaligned load/store so it doesn't catch over-aligned load/store.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139649 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-13Error out on CodeGen of unaligned load/store. Fix test so it isn't ↵Eli Friedman
accidentally testing that case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139641 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-09tidy up a bitChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139419 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-08Directly point debug info to the stack slot of the arugment, instead of ↵Devang Patel
trying to keep track of vreg in which it the arugment is copied. The LiveDebugVariable can keep track of variable's ranges. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139330 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-06Add codegen support for vector select (in the IR this means a selectDuncan Sands
with a vector condition); such selects become VSELECT codegen nodes. This patch also removes VSETCC codegen nodes, unifying them with SETCC nodes (codegen was actually often using SETCC for vector SETCC already). This ensures that various DAG combiner optimizations kick in for vector comparisons. Passes dragonegg bootstrap with no testsuite regressions (nightly testsuite as well as "make check-all"). Patch mostly by Nadav Rotem. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139159 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-06Split the init.trampoline intrinsic, which currently combines GCC'sDuncan Sands
init.trampoline and adjust.trampoline intrinsics, into two intrinsics like in GCC. While having one combined intrinsic is tempting, it is not natural because typically the trampoline initialization needs to be done in one function, and the result of adjust trampoline is needed in a different (nested) function. To get around this llvm-gcc hacks the nested function lowering code to insert an additional parent variable holding the adjust.trampoline result that can be accessed from the child function. Dragonegg doesn't have the luxury of tweaking GCC code, so it stored the result of adjust.trampoline in the memory GCC set aside for the trampoline itself (this is always available in the child function), and set up some new memory (using an alloca) to hold the trampoline. Unfortunately this breaks Go which allocates trampoline memory on the heap and wants to use it even after the parent has exited (!). Rather than doing even more hacks to get Go working, it seemed best to just use two intrinsics like in GCC. Patch mostly by Sanjoy Das. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139140 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-26Atomic load/store on ARM/Thumb.Eli Friedman
I don't really like the patterns, but I'm having trouble coming up with a better way to handle them. I plan on making other targets use the same legalization ARM-without-memory-barriers is using... it's not especially efficient, but if anyone cares, it's not that hard to fix for a given target if there's some better lowering. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138621 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-24Basic x86 code generation for atomic load and store instructions.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138478 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-23Fix 80 col violations.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138356 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-17Add the support in code-gen for the landingpad instruction lowering.Bill Wendling
The landingpad instruction is lowered into the EXCEPTIONADDR and EHSELECTION SDNodes. The information from the landingpad instruction is harvested by the 'AddLandingPadInfo' function. The new EH uses the current EH scheme in the back-end. This will change once we switch over to the new scheme. (Reviewed by Jakob!) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137880 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-17Revert patch. Forgot a dependent commit.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137875 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-17Add the body of 'visitLandingPad'.Bill Wendling
This generates the SDNodes for the new exception handling scheme. It takes the two values coming from the landingpad instruction and assigns them to the EXCEPTIONADDR and EHSELECTION nodes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137873 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-12Initial commit of the 'landingpad' instruction.Bill Wendling
This implements the 'landingpad' instruction. It's used to indicate that a basic block is a landing pad. There are several restrictions on its use (see LangRef.html for more detail). These restrictions allow the exception handling code to gather the information it needs in a much more sane way. This patch has the definition, implementation, C interface, parsing, and bitcode support in it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137501 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-03Do not drop undef debug values. These are used as range termination marker ↵Devang Patel
by live debug variable pass. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136834 91177308-0d34-0410-b5e6-96231b3b80d8
2011-08-03New approach to r136737: insert the necessary fences for atomic ops in ↵Eli Friedman
platform-independent code, since a bunch of platforms (ARM, Mips, PPC, Alpha are the relevant targets here) need to do essentially the same thing. I think this completes the basic CodeGen for atomicrmw and cmpxchg. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136813 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-31Add the 'resume' instruction for the new EH rewrite.Bill Wendling
This adds the 'resume' instruction class, IR parsing, and bitcode reading and writing. The 'resume' instruction resumes propagation of an existing (in-flight) exception whose unwinding was interrupted with a 'landingpad' instruction (to be added later). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136589 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-30Revert r136253, r136263, r136269, r136313, r136325, r136326, r136329, r136338,Bill Wendling
r136339, r136341, r136369, r136387, r136392, r136396, r136429, r136430, r136444, r136445, r136446, r136253 pending review. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136556 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-29Do not lose branch weights when lowering SwitchInst.Jakub Staszak
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136529 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-29Remove unneeded const_cast.Jakub Staszak
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136506 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-29Misc optimizer+codegen work for 'cmpxchg' and 'atomicrmw'. They appear to beEli Friedman
working on x86 (at least for trivial testcases); other architectures will need more work so that they actually emit the appropriate instructions for orderings stricter than 'monotonic'. (As far as I can tell, the ARM, PPC, Mips, and Alpha backends need such changes.) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136457 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-29Use the pointer type size.Bill Wendling
With this, we can now compile a simple EH program. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136446 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-29And now something that compiles...Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136445 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-29Make sure to sext or trunc the result from the register.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136444 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-28Visit the landingpad instruction.Bill Wendling
This generates the correct SDNodes for the landingpad instruction. It makes an assumption that the result of the landingpad instruction has at least two values. And that the first value is a pointer to the exception object and the second value is the "selector." git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136430 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-28LangRef and basic memory-representation/reading/writing for 'cmpxchg' andEli Friedman
'atomicrmw' instructions, which allow representing all the current atomic rmw intrinsics. The allowed operands for these instructions are heavily restricted at the moment; we can probably loosen it a bit, but supporting general first-class types (where it makes sense) might get a bit complicated, given how SelectionDAG works. As an initial cut, these operations do not support specifying an alignment, but it would be possible to add if we think it's useful. Specifying an alignment lower than the natural alignment would be essentially impossible to support on anything other than x86, but specifying a greater alignment would be possible. I can't think of any useful optimizations which would use that information, but maybe someone else has ideas. Optimizer/codegen support coming soon. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136404 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-28The personality function should be a Function* and not just a Value*.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136392 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-27Code generation for 'fence' instruction.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136283 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-27Merge the contents from exception-handling-rewrite to the mainline.Bill Wendling
This adds the new instructions 'landingpad' and 'resume'. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136253 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-27Explicitly cast narrowing conversions inside {}s that will become errors inJeffrey Yasskin
C++0x. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136211 91177308-0d34-0410-b5e6-96231b3b80d8
2011-07-25Initial implementation of 'fence' instruction, the new C++0x-style ↵Eli Friedman
replacement for llvm.memory.barrier. This is just a LangRef entry and reading/writing/memory representation; optimizer+codegen support coming soon. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136009 91177308-0d34-0410-b5e6-96231b3b80d8
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