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2012-09-26Add 'lock' prefix output support in assembly printerMichael Liao
- Instead of embedding 'lock' into each mnemonic of atomic instructions except 'xchg', we teach X86 assembly printer to output 'lock' prefix similar to or consistent with code emitter. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164659 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-26Generate an error message instead of asserting or segfaulting when we have aBill Wendling
scalar-to-vector conversion that we cannot handle. For instance, when an invalid constraint is used in an inline asm statement. <rdar://problem/12284092> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164657 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-26Expansions for u/srem, using the udiv expansion. More unit tests for udiv ↵Michael Ilseman
and u/srem. Fixed issue with Release build. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164654 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25Initialize boolean variables in MipsSubtarget's constructor.Akira Hatanaka
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164642 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25Don't drop the alignment on a memcpy intrinsic when producing a store. This isNick Lewycky
only a missed optimization opportunity if the store is over-aligned, but a miscompile if the store's new type has a higher natural alignment than the memcpy did. Fixes PR13920! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164641 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25blank line for test commitReed Kotler
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164640 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25Revert the business end of r164634, and replace it with a different fix. TheNick Lewycky
reason we were getting two of the same alloca is because of a memmove/memcpy which had the same alloca in both the src and dest. Now we detect that case directly. This has the same testcase as before, but fixes a clang test CodeGenObjC/exceptions.m which runs clang -O2. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164636 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25Don't try to promote the same alloca twice. Fixes PR13916!Nick Lewycky
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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164634 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25Move remaining methods inside the Attributes class. Merge the 'Attribute' ↵Bill Wendling
namespaces. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164631 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25Move Attribute::typeIncompatible inside of the Attributes class.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164629 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25TargetLowering interface to set/get minimum block entries for jump tables.Sebastian Pop
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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164628 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25Revert r164614 to appease the buildbots.Chad Rosier
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164627 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25Add missing i64 max/min/umax/umin on 32-bit targetMichael Liao
- Turn on atomic6432.ll and add specific test case as well git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164616 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25ARM: Darwin BL/BLX relocations to out-of-range symbols.Jim Grosbach
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 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164615 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25Expansions for u/srem, using the udiv expansion. More unit tests for udiv ↵Michael Ilseman
and u/srem. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164614 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25Consistently specify the assembly variant to MatchInstructionImpl.Bob Wilson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164611 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25Fix a case where SROA did not correctly detect dead PHI or selects dueChandler Carruth
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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164596 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25Change the way the lint sanity checking pass detects misaligned memory accesses.Duncan Sands
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
2012-09-25Fix an illegal tailcall opt where the callee returns a double via xmm while ↵Evan Cheng
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
2012-09-25Fix a -Wparentheses warning in the mingw buildNico Weber
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164587 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-25Fix a crash in SROA. This was reported independently by Takumi andChandler Carruth
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
2012-09-25Don't forget that strcpy and friends return a pointer to the destination, soNick Lewycky
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
2012-09-25ARM: 'add Rd, pc, #imm' is an alias for 'adr Rd, #imm'.Jim Grosbach
rdar://9795790 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164577 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-24Remove unused name of variable to quiet a warning. Also canonicalize aNick Lewycky
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
2012-09-24Mark jump tables in code sections with DataRegion directives.Jim Grosbach
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
2012-09-24Rather then have a wrapper function, have tblgen instantiate the implementation.Chad Rosier
Also remove an unused argument. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164567 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-24Teach DSE that strcpy, strncpy, strcat and strncat are all stores which may beNick Lewycky
dead. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164561 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-24Move all the calls to AA.getTargetLibraryInfo() to using a TLI member variable.Nick Lewycky
No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164560 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-24Specify MachinePointerInfo as refering to the argument value and offset of theRoman Divacky
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
2012-09-24Rather then have a wrapper function, have tblgen instantiate the implementation.Chad Rosier
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164548 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-24Add missing check for presence of target data.Richard Osborne
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
2012-09-24Enable the new SROA pass by default.Chandler Carruth
Queue the fallout. ;] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164480 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-24Address one of the original FIXMEs for the new SROA pass by implementingChandler Carruth
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
2012-09-23Emit dtors into proper section while compiling in vcpp-compatible mode.Anton Korobeynikov
Patch by Kai! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164476 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-23Switch to a signed representation for the dynamic offsets while walkingChandler Carruth
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
2012-09-23Don't do actual work inside an assert statement. Fixes PR11760!Nick Lewycky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164474 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-23Add LLVM_OVERRIDE to methods that override their base classes.Craig Topper
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164471 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-22ARMInstPrinter.cpp: Fix a warning in -Asserts. [-Wunused-variable]NAKAMURA Takumi
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164459 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-22Whitespace.NAKAMURA Takumi
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164458 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-22Fix edge cases of ARM shift operands in arith instructions.Tim Northover
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
2012-09-22Fix the handling of edge cases in ARM shifted operands.Tim Northover
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
2012-09-22Fix 16-bit atomic inst encoding and keep pseudo-inst starting with '#'Michael Liao
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164453 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-22Fix typo in r164357Michael Liao
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164452 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-22MIPS DSP: Add immediate leaves.Akira Hatanaka
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164435 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-22MIPS DSP: Add predicates and instruction template.Akira Hatanaka
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164434 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-21Add MIPS DSP register classes. Set actions of DSP vector operations and overrideAkira Hatanaka
TargetLowering's callback functions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164431 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-21SelectionDAG node enums for MIPS DSP nodes.Akira Hatanaka
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164430 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-21Add MIPS accumulator and DSP control registers.Akira Hatanaka
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164429 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-21Add flags and feature bits for mips dsp.Akira Hatanaka
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164428 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-21Fix a case where the new SROA pass failed to zap dead operands toChandler Carruth
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
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