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2012-06-27Fix bug in computation of stack size in MipsFrameLowering.cpp.Akira Hatanaka
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159240 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26Reduce indentation in function. Rearrange some methods. No functionality change.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159239 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26TableGen: AsmMatcher diagnostics preference detail.Jim Grosbach
Don't override a custom diagnostic w/ a generic InvalidOperand, all else being equal. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159238 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26Revamp how debugging information is emitted for debug info objects.Bill Wendling
It's not necessary for each DI class to have its own copy of `print' and `dump'. Instead, just give DIDescriptor those methods and have it call the appropriate debugging printing routine based on the type of the debug information. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159237 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26Add a missing check to avoid dereference null. No sensible test case ↵Evan Cheng
possible. Sorry. rdar://11745134 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159236 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26Remove a instcombine transform that (no longer?) makes sense:Evan Cheng
// C - zext(bool) -> bool ? C - 1 : C if (ZExtInst *ZI = dyn_cast<ZExtInst>(Op1)) if (ZI->getSrcTy()->isIntegerTy(1)) return SelectInst::Create(ZI->getOperand(0), SubOne(C), C); This ends up forming sext i1 instructions that codegen to terrible code. e.g. int blah(_Bool x, _Bool y) { return (x - y) + 1; } => movzbl %dil, %eax movzbl %sil, %ecx shll $31, %ecx sarl $31, %ecx leal 1(%rax,%rcx), %eax ret Without the rule, llvm now generates: movzbl %sil, %ecx movzbl %dil, %eax incl %eax subl %ecx, %eax ret It also helps with ARM (and pretty much any target that doesn't have a sext i1 :-). The transformation was done as part of Eli's r75531. He has given the ok to remove it. rdar://11748024 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159230 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26Implement getHostCPUName for ARM/linux. This will be used to implement ↵Benjamin Kramer
-march=native in clang. The cpuid registers are only available in privileged mode so we don't have an OS-independent way of implementing this. ARM doesn't provide a list of processor IDs so the list is somewhat incomplete. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159228 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26Fix llc's -print-before=pass and -print-after=pass.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159227 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26X86: add GATHER intrinsics (AVX2) in LLVMManman Ren
Support the following intrinsics: llvm.x86.avx2.gather.d.pd, llvm.x86.avx2.gather.q.pd llvm.x86.avx2.gather.d.pd.256, llvm.x86.avx2.gather.q.pd.256 llvm.x86.avx2.gather.d.ps, llvm.x86.avx2.gather.q.ps llvm.x86.avx2.gather.d.ps.256, llvm.x86.avx2.gather.q.ps.256 Modified Disassembler to handle VSIB addressing mode. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159221 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26Teach TableGen to put chains on more instructionsTim Northover
When generating selection tables for Pat instances, TableGen relied on an output Instruction's Pattern field being set to infer whether a chain should be added. This patch adds additional logic to check various flag fields so that correct code can be generated even if Pattern is unset. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159217 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26Fix ThreadLocalImpl::getInstance for --disable-threads.Argyrios Kyrtzidis
PR13114. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159210 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26Allow targets to inject passes before the virtual register rewriter.Jakob Stoklund Olesen
Such passes can be used to tweak the register assignments in a target-dependent way, for example to avoid write-after-write dependencies. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159209 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26IntegersSubsetTest: Due to compilation failure with -std=c11, replaced -1UL ↵Stepan Dyatkovskiy
with NOT_A_NUMBER constant (0xffff). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159207 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26There are a number of generic inline asm operand modifiers thatJack Carter
up to r158925 were handled as processor specific. Making them generic and putting tests for these modifiers in the CodeGen/Generic directory caused a number of targets to fail. This commit addresses that problem by having the targets call the generic routine for generic modifiers that they don't currently have explicit code for. For now only generic print operands 'c' and 'n' are supported.vi Affected files: test/CodeGen/Generic/asm-large-immediate.ll lib/Target/PowerPC/PPCAsmPrinter.cpp lib/Target/NVPTX/NVPTXAsmPrinter.cpp lib/Target/ARM/ARMAsmPrinter.cpp lib/Target/XCore/XCoreAsmPrinter.cpp lib/Target/X86/X86AsmPrinter.cpp lib/Target/Hexagon/HexagonAsmPrinter.cpp lib/Target/CellSPU/SPUAsmPrinter.cpp lib/Target/Sparc/SparcAsmPrinter.cpp lib/Target/MBlaze/MBlazeAsmPrinter.cpp lib/Target/Mips/MipsAsmPrinter.cpp MSP430 isn't represented because it did not even run with the long existing 'c' modifier and it was not apparent what needs to be done to get it inline asm ready. Contributer: Jack Carter git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159203 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26Replacing zero-sized alloca's with a null pointer is too aggressive, insteadDuncan Sands
merge all zero-sized alloca's into one, fixing c43204g from the Ada ACATS conformance testsuite. What happened there was that a variable sized object was being allocated on the stack, "alloca i8, i32 %size". It was then being passed to another function, which tested that the address was not null (raising an exception if it was) then manipulated %size bytes in it (load and/or store). The optimizers cleverly managed to deduce that %size was zero (congratulations to them, as it isn't at all obvious), which made the alloca zero size, causing the optimizers to replace it with null, which then caused the check mentioned above to fail, and the exception to be raised, wrongly. Note that no loads and stores were actually being done to the alloca (the loop that does them is executed %size times, i.e. is not executed), only the not-null address check. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159202 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26IntegersSubsetMapping: implemented "diff" operation. Operation allows at the ↵Stepan Dyatkovskiy
same time perform up to three operations: - LHS exclude RHS - LHS intersect RHS (LHS successors will keeped) - RHS exclude LHS The complexity is N+M, where N is size of LHS M is size of RHS. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159201 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26IntegersSubsetMapping: removed exclude operation, it will replaced with more ↵Stepan Dyatkovskiy
universal "diff" operation in next commit. Changes was separated onto two commits for better readability. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159200 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26Sphyinxify the Bugpoint document.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159199 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26Removed unused variableElena Demikhovsky
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159197 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26Rename to match other X86_64* names.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159196 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26Shuffle optimization for AVX/AVX2.Elena Demikhovsky
The current patch optimizes frequently used shuffle patterns and gives these instruction sequence reduction. Before: vshufps $-35, %xmm1, %xmm0, %xmm2 ## xmm2 = xmm0[1,3],xmm1[1,3] vpermilps $-40, %xmm2, %xmm2 ## xmm2 = xmm2[0,2,1,3] vextractf128 $1, %ymm1, %xmm1 vextractf128 $1, %ymm0, %xmm0 vshufps $-35, %xmm1, %xmm0, %xmm0 ## xmm0 = xmm0[1,3],xmm1[1,3] vpermilps $-40, %xmm0, %xmm0 ## xmm0 = xmm0[0,2,1,3] vinsertf128 $1, %xmm0, %ymm2, %ymm0 After: vshufps $13, %ymm0, %ymm1, %ymm1 ## ymm1 = ymm1[1,3],ymm0[0,0],ymm1[5,7],ymm0[4,4] vshufps $13, %ymm0, %ymm0, %ymm0 ## ymm0 = ymm0[1,3,0,0,5,7,4,4] vunpcklps %ymm1, %ymm0, %ymm0 ## ymm0 = ymm0[0],ymm1[0],ymm0[1],ymm1[1],ymm0[4],ymm1[4],ymm0[5],ymm1[5] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159188 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26Update a bunch of stale comments that dated from when this folled theChandler Carruth
very first (and worst) placement algorithm. These should now more accurately reflect the reality of the pass. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159185 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26Remove some duplicate instructions that exist only to given different ↵Craig Topper
mnemonics for the assembler. Use InstAlias instead. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159184 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26Enable the new LoopInfo algorithm by default.Andrew Trick
The primary advantage is that loop optimizations will be applied in a stable order. This helps debugging and unit test creation. It is also a better overall implementation without pathologically bad performance on deep functions. On large functions (llvm-stress --size=200000 | opt -loops) Before: 0.1263s After: 0.0225s On deep functions (after tweaking llvm-stress, thanks Nadav): Before: 0.2281s After: 0.0227s See r158790 for more comments. The loop tree is now consistently generated in forward order, but loop passes are applied in reverse order over the program. If we have a loop optimization that prefers forward order, that can easily be achieved by adding a different type of LoopPassManager. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159183 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26Remove unnecessary FIXMEAndrew Trick
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159182 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26Make sure type is not extended or untyped before create a constant of the ↵Evan Cheng
type. No test case. Found by inspection. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159179 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-26Typo.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159178 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-25Make some ugly hacks for inline asm operands which name a specific register ↵Eli Friedman
a bit more thorough. PR13196. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159176 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-25revert my previous commit (r159173), since as Eli pointed out, it's ↵Nuno Lopes
perfectly ok to mark realloc as noalias git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159175 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-25do not set realloc() as NotAlias, since it can return the same pointer. This ↵Nuno Lopes
whole thing should be upgraded to use the MemoryBuiltin interface anyway.. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159173 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-25ARM: update peephole optimization.Manman Ren
More condition codes are included when deciding whether to remove cmp after a sub instruction. Specifically, we extend from GE|LT|GT|LE to GE|LT|GT|LE|HS|LS|HI|LO|EQ|NE. If we have "sub a, b; cmp b, a; movhs", we should be able to replace with "sub a, b; movls". rdar: 11725965 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159166 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-25Define DAGOperand, an empty base class for RegisterClass and Operand. This ↵Owen Anderson
allows one to write multiclasses that are polymorphic over both registers and non-register operands. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159162 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-25Fix the objc_autoreleasedReturnValue optimization code to locateDan Gohman
the call correctly even in the case where it is an invoke. This fixes rdar://11714057. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159157 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-25Enforce stricter liveness rules for PHIs.Jakob Stoklund Olesen
Verify that all paths from the entry block to a virtual register read pass through a def. Enable this check even when MRI->isSSA() is false. Verify that the live range of a virtual register is live out of all predecessor blocks, even for PHI-values. This requires that PHIElimination sometimes inserts IMPLICIT_DEF instruction in predecessor blocks. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159150 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-25Run ProcessImplicitDefs on SSA form where it can be much simpler.Jakob Stoklund Olesen
Implicitly defined virtual registers can simply have the <undef> bit set on all uses, and copies can be turned into implicit defs recursively. Physical registers are a bit trickier. We handle the common case where a physreg def is used by a nearby instruction in the same basic block. For more complicated cases, just leave the IMPLICIT_DEF instruction in. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159149 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-25improve optimization of invoke instructions:Nuno Lopes
- simplifycfg: invoke undef/null -> unreachable - instcombine: invoke new -> invoke expect(0, 0) (an arbitrary NOOP intrinsic; only done if the allocated memory is unused, of course) - verifier: allow invoke of intrinsics (to make the previous step work) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159146 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-25check for the NoAlias attribute through CallSiteNuno Lopes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159145 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-25add CallSite/CallInst/InvokeInst::hasFnAttr()Nuno Lopes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159144 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-25PR13013: ELF Type identification fails for MSB type ELF files.Meador Inge
Fix 'sys::IdentifyFileType' to work with big and little endian byte orderings when reading the ELF object file type. Initial patch by Stefan Hepp. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159138 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-25If a constant or a function has linkonce_odr linkage and unnamed_addr, mark itRafael Espindola
hidden. Being linkonce_odr guarantees that it is available in every dso that needs it. Being a constant/function with unnamed_addr guarantees that the copies don't have to be merged. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159136 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-25The name (and comment describing) of llvm::GetFirstDebuigLocInBasicBlock no ↵Eli Bendersky
longer represents what the function does. Therefore, the function is removed and its functionality is folded into the only place in the code-base where it was being used. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159133 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-25Add SSE2 predicate to CVTPS2PD instructions. Doesn't matter much because ↵Craig Topper
there are no patterns in the instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159127 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-25Remove codegen only instruction in favor of one that has the same ↵Craig Topper
definition. Make some pattern operands more explicit about types. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159126 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-25Just remove generic support for C++11 alignas -- GCC is alreadyChandler Carruth
advertising complete support w/o alignas implemented, and its implementation of alignas in the latest versions is so convoluted as to be unusable. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159125 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-25Teach PHIElimination to handle <undef> operands.Jakob Stoklund Olesen
When a PHI use is <undef>, don't emit a copy in the predecessor block, but insert an IMPLICIT_DEF instruction instead. This ensures that virtual register uses are always jointly dominated by defs, even if some of them are IMPLICIT_DEF. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159121 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-25Handle <undef> operands in TwoAddressInstructionPass.Jakob Stoklund Olesen
When the source register to a 2-addr instruction is undefined, there is no need to attempt any transformations - simply replace the source register with the destination register. This also comes up when lowering IMPLICIT_DEF instructions - make sure the <undef> flag is moved to the new partial register def operand: %vreg8<def> = INSERT_SUBREG %vreg9<undef>, %vreg0<kill>, sub_16bit rewrite undef: %vreg8<def> = INSERT_SUBREG %vreg8<undef>, %vreg0<kill>, sub_16bit convert to: %vreg8:sub_16bit<def,read-undef> = COPY %vreg0<kill> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159120 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-24%RCX is not a function live-out in eh.return functions.Jakob Stoklund Olesen
The function live-out registers must be live at all function returns, and %RCX is only used by eh.return. When a function also has a normal return, only %RAX holds a return value. This fixes PR13188. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159116 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-24llvm/lib: [CMake] Add explicit dependency to intrinsics_gen.NAKAMURA Takumi
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159112 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-24Allow controlling vectorization of boolean values separately from other ↵Hal Finkel
integer types. These are used as the result of comparisons, and often handled differently from larger integer types. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159111 91177308-0d34-0410-b5e6-96231b3b80d8
2012-06-24Remove dyn_cast + dereference pattern by replacing it with a cast and changingNick Lewycky
the safety check to look for the same type we're going to actually cast to. Fixes PR13180! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159110 91177308-0d34-0410-b5e6-96231b3b80d8
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