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* Don't try to promote the same alloca twice. Fixes PR13916!Nick Lewycky2012-09-251-0/+6
| | | | | | | | Chandler, it's not obvious that it's okay that this alloca gets into the list twice to begin with. Please review and see whether this is the fix you really want, but I wanted to get a fix checked in quickly. llvm-svn: 164634
* Move remaining methods inside the Attributes class. Merge the 'Attribute' ↵Bill Wendling2012-09-252-2/+2
| | | | | | namespaces. llvm-svn: 164631
* Move Attribute::typeIncompatible inside of the Attributes class.Bill Wendling2012-09-254-11/+12
| | | | llvm-svn: 164629
* TargetLowering interface to set/get minimum block entries for jump tables.Sebastian Pop2012-09-253-2/+6
| | | | | | | | | | | | | | Provide interface in TargetLowering to set or get the minimum number of basic blocks whereby jump tables are generated for switch statements rather than an if sequence. getMinimumJumpTableEntries() defaults to 4. setMinimumJumpTableEntries() allows target configuration. This patch changes the default for the Hexagon architecture to 5 as it improves performance on some benchmarks. llvm-svn: 164628
* Revert r164614 to appease the buildbots.Chad Rosier2012-09-251-115/+7
| | | | llvm-svn: 164627
* Add missing i64 max/min/umax/umin on 32-bit targetMichael Liao2012-09-253-0/+90
| | | | | | - Turn on atomic6432.ll and add specific test case as well llvm-svn: 164616
* ARM: Darwin BL/BLX relocations to out-of-range symbols.Jim Grosbach2012-09-251-1/+48
| | | | | | | | | | | When a BL/BLX references a symbol in the same translation unit that is out of range, use an external relocation. The linker will use this to generate a branch island rather than a direct reference, allowing the relocation to resolve correctly. rdar://12359919 llvm-svn: 164615
* Expansions for u/srem, using the udiv expansion. More unit tests for udiv ↵Michael Ilseman2012-09-251-7/+115
| | | | | | and u/srem. llvm-svn: 164614
* Consistently specify the assembly variant to MatchInstructionImpl.Bob Wilson2012-09-251-4/+8
| | | | llvm-svn: 164611
* Fix a case where SROA did not correctly detect dead PHI or selects dueChandler Carruth2012-09-251-5/+10
| | | | | | | | to chains or cycles between PHIs and/or selects. Also add a couple of really nice test cases reduced from Kostya's reports in PR13905 and PR13906. Both are fixed by this patch. llvm-svn: 164596
* Change the way the lint sanity checking pass detects misaligned memory accesses.Duncan Sands2012-09-251-6/+18
| | | | | | | | | | | | | | | 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. llvm-svn: 164595
* Fix an illegal tailcall opt where the callee returns a double via xmm while ↵Evan Cheng2012-09-252-1/+10
| | | | | | caller returns x86_fp80 via st0. rdar://12229511 llvm-svn: 164588
* Fix a -Wparentheses warning in the mingw buildNico Weber2012-09-251-1/+1
| | | | llvm-svn: 164587
* 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. llvm-svn: 164585
* Don't forget that strcpy and friends return a pointer to the destination, soNick Lewycky2012-09-251-2/+2
| | | | | | it's not a dead store if that pointer is used. Whoops! llvm-svn: 164583
* ARM: 'add Rd, pc, #imm' is an alias for 'adr Rd, #imm'.Jim Grosbach2012-09-251-0/+14
| | | | | | rdar://9795790 llvm-svn: 164577
* 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. llvm-svn: 164576
* Mark jump tables in code sections with DataRegion directives.Jim Grosbach2012-09-242-0/+12
| | | | | | | | | 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 llvm-svn: 164571
* Rather then have a wrapper function, have tblgen instantiate the implementation.Chad Rosier2012-09-244-37/+0
| | | | | | Also remove an unused argument. llvm-svn: 164567
* Teach DSE that strcpy, strncpy, strcat and strncat are all stores which may beNick Lewycky2012-09-241-32/+71
| | | | | | dead. llvm-svn: 164561
* Move all the calls to AA.getTargetLibraryInfo() to using a TLI member variable.Nick Lewycky2012-09-241-12/+11
| | | | | | No functionality change. llvm-svn: 164560
* Specify MachinePointerInfo as refering to the argument value and offset of theRoman Divacky2012-09-241-3/+5
| | | | | | | store when handling byval arguments. Thus preventing reordering of the store with load with post-RA scheduler. llvm-svn: 164553
* Rather then have a wrapper function, have tblgen instantiate the implementation.Chad Rosier2012-09-244-16/+0
| | | | llvm-svn: 164548
* Add missing check for presence of target data.Richard Osborne2012-09-241-20/+22
| | | | | | This avoids a crash in visitAllocaInst when target data isn't available. llvm-svn: 164539
* Enable the new SROA pass by default.Chandler Carruth2012-09-241-1/+1
| | | | | | Queue the fallout. ;] llvm-svn: 164480
* Address one of the original FIXMEs for the new SROA pass by implementingChandler Carruth2012-09-241-1/+118
| | | | | | | | | | | | | | | | 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. llvm-svn: 164479
* Emit dtors into proper section while compiling in vcpp-compatible mode.Anton Korobeynikov2012-09-231-6/+14
| | | | | | Patch by Kai! llvm-svn: 164476
* Switch to a signed representation for the dynamic offsets while walkingChandler Carruth2012-09-231-26/+75
| | | | | | | | | | | | | | | | | | | 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. llvm-svn: 164475
* Don't do actual work inside an assert statement. Fixes PR11760!Nick Lewycky2012-09-231-4/+6
| | | | llvm-svn: 164474
* Add LLVM_OVERRIDE to methods that override their base classes.Craig Topper2012-09-236-21/+26
| | | | llvm-svn: 164471
* ARMInstPrinter.cpp: Fix a warning in -Asserts. [-Wunused-variable]NAKAMURA Takumi2012-09-221-0/+2
| | | | llvm-svn: 164459
* Whitespace.NAKAMURA Takumi2012-09-221-2/+2
| | | | llvm-svn: 164458
* Fix edge cases of ARM shift operands in arith instructions.Tim Northover2012-09-221-38/+6
| | | | | | | | | As before with load instructions, oddities like "asr #32", "rrx" could be printed incorrectly. Patch by Chris Lidbury. llvm-svn: 164456
* Fix the handling of edge cases in ARM shifted operands.Tim Northover2012-09-224-8/+35
| | | | | | | | | This patch fixes load/store instructions to handle less common cases like "asr #32", "rrx" properly throughout the MC layer. Patch by Chris Lidbury. llvm-svn: 164455
* Fix 16-bit atomic inst encoding and keep pseudo-inst starting with '#'Michael Liao2012-09-221-14/+14
| | | | llvm-svn: 164453
* Fix typo in r164357Michael Liao2012-09-221-1/+1
| | | | llvm-svn: 164452
* MIPS DSP: Add immediate leaves.Akira Hatanaka2012-09-221-0/+20
| | | | llvm-svn: 164435
* MIPS DSP: Add predicates and instruction template.Akira Hatanaka2012-09-221-0/+25
| | | | llvm-svn: 164434
* Add MIPS DSP register classes. Set actions of DSP vector operations and overrideAkira Hatanaka2012-09-212-0/+49
| | | | | | TargetLowering's callback functions. llvm-svn: 164431
* SelectionDAG node enums for MIPS DSP nodes.Akira Hatanaka2012-09-212-0/+55
| | | | llvm-svn: 164430
* Add MIPS accumulator and DSP control registers.Akira Hatanaka2012-09-212-1/+45
| | | | llvm-svn: 164429
* Add flags and feature bits for mips dsp.Akira Hatanaka2012-09-212-0/+9
| | | | llvm-svn: 164428
* Fix a case where the new SROA pass failed to zap dead operands toChandler Carruth2012-09-211-0/+4
| | | | | | | | | | | 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. llvm-svn: 164427
* Add an --enable-backtraces option to configure to determineEric Christopher2012-09-211-1/+1
| | | | | | | | | whether or not we want to print out backtrace information. Useful for libraries that don't need backtrace information on a crash. rdar://11844710 llvm-svn: 164426
* [ms-inline asm] Expose the mnemonicIsValid() function in the AsmParser.Chad Rosier2012-09-214-0/+16
| | | | llvm-svn: 164420
* 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 llvm-svn: 164419
* Add comment.Chad Rosier2012-09-211-1/+2
| | | | llvm-svn: 164415
* Add comment.Chad Rosier2012-09-211-1/+2
| | | | llvm-svn: 164414
* Fix a significant recent(?) regression. StackSlotColoring no longer did anythingEvan Cheng2012-09-214-3/+10
| | | | | | | | | because LiveStackAnalysis was not preserved by VirtRegWriter. This caused big stack usage regression in some cases. rdar://12340383 llvm-svn: 164408
* LoopIdiom: Give up when the loop is not in canonical form.Benjamin Kramer2012-09-211-0/+5
| | | | | | | | | We rely on it when doing the transforms. This can happen when there is an indirectbr in the loop. Fixes PR13892. llvm-svn: 164383
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