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* Change the way the lint sanity checking pass detects misaligned memory accesses.Duncan Sands2012-09-252-8/+24
| | | | | | | | | | | | | | | | Previously it was only be able to detect problems if the pointer was a numerical value (eg inttoptr i32 1 to i32*), but not if it was an alloca or globa. The reason was the use of ComputeMaskedBits: imagine you have "alloca i8, align 2", and ask ComputeMaskedBits what it knows about the bits of the alloca pointer. It can tell you that the bottom bit is known zero (due to align 2) but it can't tell you that bit 1 is known one. That's because the address could be an even multiple of 2 rather than an odd multiple, eg it might be a multiple of 4. Thus trying to use KnownOne is ineffective in the case of an alloca as it will never have any bits set. Instead look explicitly for constant offsets from allocas and globals. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164595 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix an illegal tailcall opt where the callee returns a double via xmm while ↵Evan Cheng2012-09-253-4/+36
| | | | | | caller returns x86_fp80 via st0. rdar://12229511 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164588 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a -Wparentheses warning in the mingw buildNico Weber2012-09-251-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164587 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a crash in SROA. This was reported independently by Takumi andChandler Carruth2012-09-251-12/+7
| | | | | | | | | | David (I think), but I would appreciate folks verifying that this fixes the big crasher. I'm still working on a reduced test case, but because this was causing problems I wanted to get the fix checked in quickly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164585 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't forget that strcpy and friends return a pointer to the destination, soNick Lewycky2012-09-252-2/+12
| | | | | | | it's not a dead store if that pointer is used. Whoops! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164583 91177308-0d34-0410-b5e6-96231b3b80d8
* Unit tests for IntegerDivision. Currently, just a basic sanity check to ↵Michael Ilseman2012-09-252-0/+55
| | | | | | ensure that the code was generated properly. Future work would be finding some way to test the actual result that would be computed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164582 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM: 'add Rd, pc, #imm' is an alias for 'adr Rd, #imm'.Jim Grosbach2012-09-252-0/+18
| | | | | | rdar://9795790 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164577 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove unused name of variable to quiet a warning. Also canonicalize aNick Lewycky2012-09-241-3/+3
| | | | | | | | declaration to use the same form as in the rest of the file. No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164576 91177308-0d34-0410-b5e6-96231b3b80d8
* Mark jump tables in code sections with DataRegion directives.Jim Grosbach2012-09-243-0/+24
| | | | | | | | | Even out-of-line jump tables can be in the code section, so mark them as data-regions for those targets which support the directives. rdar://12362871&12362974 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164571 91177308-0d34-0410-b5e6-96231b3b80d8
* Typo.Chad Rosier2012-09-241-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164570 91177308-0d34-0410-b5e6-96231b3b80d8
* Rather then have a wrapper function, have tblgen instantiate the implementation.Chad Rosier2012-09-246-44/+7
| | | | | | Also remove an unused argument. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164567 91177308-0d34-0410-b5e6-96231b3b80d8
* Clear UNIVERSAL_SDK_PATH setting when building host tools. <rdar://12360497>Bob Wilson2012-09-241-2/+4
| | | | | | | | | I also moved the SDKROOT setting into the make flags, since clearing it from the environment isn't good enough to override a setting on the make command line. That hasn't been a problem but it could be, and it's good to be consistent with the way UNIVERSAL_SDK_PATH is handled. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164565 91177308-0d34-0410-b5e6-96231b3b80d8
* Teach DSE that strcpy, strncpy, strcat and strncat are all stores which may beNick Lewycky2012-09-242-32/+117
| | | | | | | dead. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164561 91177308-0d34-0410-b5e6-96231b3b80d8
* Move all the calls to AA.getTargetLibraryInfo() to using a TLI member variable.Nick Lewycky2012-09-241-12/+11
| | | | | | | No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164560 91177308-0d34-0410-b5e6-96231b3b80d8
* Specify MachinePointerInfo as refering to the argument value and offset of theRoman Divacky2012-09-242-3/+32
| | | | | | | | store when handling byval arguments. Thus preventing reordering of the store with load with post-RA scheduler. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164553 91177308-0d34-0410-b5e6-96231b3b80d8
* Rather then have a wrapper function, have tblgen instantiate the implementation.Chad Rosier2012-09-245-18/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164548 91177308-0d34-0410-b5e6-96231b3b80d8
* Add missing : in CHECK line.Richard Osborne2012-09-241-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164540 91177308-0d34-0410-b5e6-96231b3b80d8
* Add missing check for presence of target data.Richard Osborne2012-09-242-20/+41
| | | | | | This avoids a crash in visitAllocaInst when target data isn't available. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164539 91177308-0d34-0410-b5e6-96231b3b80d8
* Enable the new SROA pass by default.Chandler Carruth2012-09-241-1/+1
| | | | | | Queue the fallout. ;] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164480 91177308-0d34-0410-b5e6-96231b3b80d8
* Address one of the original FIXMEs for the new SROA pass by implementingChandler Carruth2012-09-242-21/+161
| | | | | | | | | | | | | | | | integer promotion analogous to vector promotion. When there is an integer alloca being accessed both as its integer type and as a narrower integer type, promote the narrower access to "insert" and "extract" the smaller integer from the larger one, and make the integer alloca a candidate for promotion. In the new formulation, we don't care about target legal integer or use thresholds to control things. Instead, we only perform this promotion to an integer type which the frontend has already emitted a load or store for. This bounds the scope and prevents optimization passes from coalescing larger and larger entities into a single integer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164479 91177308-0d34-0410-b5e6-96231b3b80d8
* Emit dtors into proper section while compiling in vcpp-compatible mode.Anton Korobeynikov2012-09-232-12/+31
| | | | | | | Patch by Kai! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164476 91177308-0d34-0410-b5e6-96231b3b80d8
* Switch to a signed representation for the dynamic offsets while walkingChandler Carruth2012-09-232-26/+133
| | | | | | | | | | | | | | | | | | | across the uses of the alloca. It's entirely possible for negative numbers to come up here, and in some rare cases simply doing the 2's complement arithmetic isn't the correct decision. Notably, we can't zext the index of the GEP. The definition of GEP is that these offsets are sign extended or truncated to the size of the pointer, and then wrapping 2's complement arithmetic used. This patch fixes an issue that comes up with *no* input from the buildbots or bootstrap afaict. The only place where it manifested, disturbingly, is Clang's own regression test suite. A reduced and targeted collection of tests are added to cope with this. Note that I've tried to pin down the potential cases of overflow, but may have missed some cases. I've tried to add a few cases to test this, but its hard because LLVM has quite limited support for >64bit constructs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164475 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't do actual work inside an assert statement. Fixes PR11760!Nick Lewycky2012-09-234-4/+9
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164474 91177308-0d34-0410-b5e6-96231b3b80d8
* Revise test to avoid using of 'grep'Michael Liao2012-09-231-20/+14
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164472 91177308-0d34-0410-b5e6-96231b3b80d8
* Add LLVM_OVERRIDE to methods that override their base classes.Craig Topper2012-09-2317-66/+73
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164471 91177308-0d34-0410-b5e6-96231b3b80d8
* Enhance test case of atomic16 to verify inst encoding fixed in r164453.Michael Liao2012-09-221-0/+6
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164465 91177308-0d34-0410-b5e6-96231b3b80d8
* ARMInstPrinter.cpp: Fix a warning in -Asserts. [-Wunused-variable]NAKAMURA Takumi2012-09-221-0/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164459 91177308-0d34-0410-b5e6-96231b3b80d8
* Whitespace.NAKAMURA Takumi2012-09-221-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164458 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix edge cases of ARM shift operands in arith instructions.Tim Northover2012-09-223-38/+94
| | | | | | | | | As before with load instructions, oddities like "asr #32", "rrx" could be printed incorrectly. Patch by Chris Lidbury. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164456 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix the handling of edge cases in ARM shifted operands.Tim Northover2012-09-226-8/+151
| | | | | | | | | This patch fixes load/store instructions to handle less common cases like "asr #32", "rrx" properly throughout the MC layer. Patch by Chris Lidbury. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164455 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix 16-bit atomic inst encoding and keep pseudo-inst starting with '#'Michael Liao2012-09-221-14/+14
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164453 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix typo in r164357Michael Liao2012-09-221-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164452 91177308-0d34-0410-b5e6-96231b3b80d8
* Machine Model (-schedmodel only). Added SchedAliases.Andrew Trick2012-09-224-88/+327
| | | | | | | Allow subtargets to tie SchedReadWrite types to processor specific sequences or variants. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164451 91177308-0d34-0410-b5e6-96231b3b80d8
* Add llvm::getOrdinalSuffix to get the appropriate -st, -nd, -rd, -th suffix.Jordan Rose2012-09-221-0/+19
| | | | | | Used by clang to print parameter indexes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164440 91177308-0d34-0410-b5e6-96231b3b80d8
* Casting: assert that pointer arguments to isa<> are non-null.Jordan Rose2012-09-221-0/+3
| | | | | | | | This silences several analyzer warnings within LLVM, and provides a slightly nicer crash experience when someone calls isa<>, cast<>, or dyn_cast<> with a null pointer. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164439 91177308-0d34-0410-b5e6-96231b3b80d8
* DenseMap: assert that we have found a bucket before we try to insert into it.Jordan Rose2012-09-221-0/+1
| | | | | | | This silences literally dozens of analyzer warnings on LLVM (since DenseMap is such a commonly-used class). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164438 91177308-0d34-0410-b5e6-96231b3b80d8
* MIPS DSP: Add immediate leaves.Akira Hatanaka2012-09-221-0/+20
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164435 91177308-0d34-0410-b5e6-96231b3b80d8
* MIPS DSP: Add predicates and instruction template.Akira Hatanaka2012-09-221-0/+25
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164434 91177308-0d34-0410-b5e6-96231b3b80d8
* Add MIPS DSP register classes. Set actions of DSP vector operations and overrideAkira Hatanaka2012-09-212-0/+49
| | | | | | | TargetLowering's callback functions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164431 91177308-0d34-0410-b5e6-96231b3b80d8
* SelectionDAG node enums for MIPS DSP nodes.Akira Hatanaka2012-09-212-0/+55
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164430 91177308-0d34-0410-b5e6-96231b3b80d8
* Add MIPS accumulator and DSP control registers.Akira Hatanaka2012-09-212-1/+45
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164429 91177308-0d34-0410-b5e6-96231b3b80d8
* Add flags and feature bits for mips dsp.Akira Hatanaka2012-09-212-0/+9
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164428 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a case where the new SROA pass failed to zap dead operands toChandler Carruth2012-09-212-7/+15
| | | | | | | | | | | selects with a constant condition. This resulted in the operands remaining live through the SROA rewriter. Most of the time, this just caused some dead allocas to persist and get zapped by later passes, but in one case found by Joerg, it caused a crash when we tried to *promote* the alloca despite it having this dead use. We already have the mechanisms in place to handle this, just wire select up to them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164427 91177308-0d34-0410-b5e6-96231b3b80d8
* Add an --enable-backtraces option to configure to determineEric Christopher2012-09-214-2/+47
| | | | | | | | | whether or not we want to print out backtrace information. Useful for libraries that don't need backtrace information on a crash. rdar://11844710 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164426 91177308-0d34-0410-b5e6-96231b3b80d8
* Add an MDBuilder utility for creating !tbaa.struct nodes.Dan Gohman2012-09-211-0/+21
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164425 91177308-0d34-0410-b5e6-96231b3b80d8
* [CMake] Respect LLVM_BUILD_RUNTIME.Michael J. Spencer2012-09-211-0/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164424 91177308-0d34-0410-b5e6-96231b3b80d8
* [ms-inline asm] Expose the mnemonicIsValid() function in the AsmParser.Chad Rosier2012-09-216-2/+22
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164420 91177308-0d34-0410-b5e6-96231b3b80d8
* Have the DbgVariable "isArtificial" and "isObjectPointer" notEric Christopher2012-09-212-5/+5
| | | | | | | | | | | | care about it being an argument variable so that we can decide that captured block and lambda vars that don't happen to be arguments could be an argument pointer. Add the object pointer for one case onto the subprogram die. rdar://12001329 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164419 91177308-0d34-0410-b5e6-96231b3b80d8
* Add comment.Chad Rosier2012-09-211-1/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164415 91177308-0d34-0410-b5e6-96231b3b80d8
* Add comment.Chad Rosier2012-09-211-1/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164414 91177308-0d34-0410-b5e6-96231b3b80d8
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