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2012-01-12Allow targets to select source order pre-RA scheduler.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148033 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-12Rename X86ATTAsmParser -> X86AsmParserDevang Patel
We are using one parser to parse att as well as intel style syntax. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148032 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-12Make SplitAnalysis::UseSlots private.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148031 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-12After Jakob's r147938 exception handling on i386 was completely broken.Benjamin Kramer
Restore the (obviously wrong) behavior from before r147938 without relying on undefined behavior. Add a fat FIXME note. This should fix nightly tester failures. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148030 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-12Fix a bug in the AVX 256-bit shuffle code in cases where the splat element ↵Nadav Rotem
is on the boundary of two 128-bit vectors. The attached testcase was stuck in an endless loop. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148027 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-12X86: Generalize the x << (y & const) optimization to also catch masks with ↵Benjamin Kramer
more set bits set than 31 or 63. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148024 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-12Add predicate method check match memory operand size, if available.Devang Patel
In att style asm syntax memory operand size is derived from suffix attached with mnemonic. In intel style asm syntax it is part of memory operand hence predicate method check is required to select appropriate instruction. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148006 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-12A DenseMap of a std::map isn't a very good idea because the "grow()" method willBill Wendling
need to make a deep copy of each of the std::maps. Use a std::map of the std::map instead. This improves the compile time of sqlite3 by ~2%. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148003 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-12Add intel style operand parser skeleton. Devang Patel
This is a work in progress. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148002 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-12Switch all of the uses of my InsertDAGNode helper to follow the exactChandler Carruth
same pattern. We already had this pattern is a few places, but others tried to make a rough approximation of an actual DAG structure. As not everywhere went to this trouble, nothing could rely on this being done. In fact, I've checked all references to these node Ids, and the ones that are using the topo-sort properties are actually satisfied with a strict-weak-ordering. The requirement appears to be that Use >= Def. I've added a big blurb of comments to this bit of the transform to clarify why the order is so important for the next reader of the code. I'm starting with this change as it is very small, and trivially reverted if something breaks or the >= above really does need to be >. If that proves the case, we can hide the problem by reverting this patch, but the problem exists elsewhere as well, and so a more comprehensive solution will be needed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148001 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Revert r147978. A DenseMap's iterators may become invalidated here.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147980 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Make data structures private.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147979 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Use a DenseMap.Bill Wendling
This appears to improve sqlite3's compile time by ~2%. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147978 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Sink spillInterferences into RABasic.Jakob Stoklund Olesen
This helper method is too simplistic for RAGreedy. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147976 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Cleanup.Jakob Stoklund Olesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147975 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Move RegAllocBase into its own cpp file separate from RABasic.Jakob Stoklund Olesen
No functional change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147972 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Re-fix the issue Bill fixed in r147899 in a slightly different way, which ↵Eli Friedman
doesn't abuse the semantics of linker_private. We don't really want to merge any string constant with a weak_odr global. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147971 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Fix assert.Eric Christopher
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147966 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Disable the crash reporter when running lit tests.Argyrios Kyrtzidis
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147965 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11On AVX, we can load v8i32 at a time. The bug happens when two uneven loads ↵Nadav Rotem
are used. When we load the v12i32 type, the GenWidenVectorLoads method generates two loads: v8i32 and v4i32 and attempts to use CONCAT_VECTORS to join them. In this fix I concat undef values to widen the smaller value. The test "widen_load-2.ll" also exposes this bug on AVX. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147964 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Support segmented stacks on mac.Rafael Espindola
This uses TLS slot 90, which actually belongs to JavaScriptCore. We only support frames with static size Patch by Brian Anderson. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147960 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Generate the segmented stack prologue for fastcc too.Rafael Espindola
Patch by Brian Anderson. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147958 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Revert r147945 which disabled an addressing mode transformation. I hadChandler Carruth
hoped this would revive one of the llvm-gcc selfhost build bots, but it didn't so it doesn't appear that my transform is the culprit. If anyone else is seeing failures, please let me know! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147957 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Use unsigned comparison in segmented stack prologue.Rafael Espindola
This is a comparison of two addresses, and GCC does the comparison unsigned. Patch by Brian Anderson. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147954 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11[asan] extend the workaround for http://llvm.org/bugs/show_bug.cgi?id=11395: ↵Kostya Serebryany
don't instrument the function at all on x86_32 if it has a large asm blob git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147953 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Explicitly set the scale to 1 on some segstack prologue instrs.Rafael Espindola
Patch by Brian Anderson. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147952 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11The error check for using -g with a .s file already containing dwarf .fileKevin Enderby
directives was in the wrong place and getting triggered incorectly with a cpp .file directive. This change fixes that and adds a test case. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147951 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Add XOP Intrinsics and testsJan Sjödin
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147949 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Fix a bug in the lowering of BUILD_VECTOR for AVX. SCALAR_TO_VECTOR does not ↵Nadav Rotem
zero untouched elements. Use INSERT_VECTOR_ELT instead. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147948 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Don't try to create a GEP when the pointee type is unsized (such GEPsDuncan Sands
are invalid). Fixes a crash on array1.C from the GCC testsuite when compiled with dragonegg. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147946 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Disable the transformation I added in r147936 to see if it fixes someChandler Carruth
strange build bot failures that look like a miscompile into an infloop. I'll investigate this tomorrow, but I'd both like to know whether my patch is the culprit, and get the bots back to green. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147945 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Hoist a really redundant code pattern into a helper function, and deleteChandler Carruth
lots of lines of code. No functionality changed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147942 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Simplify the AND-rooted mask+shift checking code to match that of theChandler Carruth
SRL-rooted code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147941 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Unify the interface of the three mask+shift transform helpers, andChandler Carruth
factor the differences that were hiding in one of them into its other caller, the SRL handling code. No change in behavior. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147940 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Clarify and make explicit some of the requirements for transformingChandler Carruth
mask+shift pairs at the beginning of the ISD::AND case block, and then hoist the final pattern into a helper function, simplifying and reflowing it appropriately. This should have no observable behavior change, but several simplifications fell out of this such as directly computing the new mask constant, etc. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147939 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Fix undefined code and reenable test case.Jakob Stoklund Olesen
I don't think the compact encoding code is right, but at least is has defined behavior now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147938 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Hoist the logic to transform shift+mask combinations into sub-registerChandler Carruth
extracts and scaled addressing modes into its own helper function. No functionality changed here, just hoisting and layout fixes falling out of that hoisting. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147937 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Teach the X86 instruction selection to do some heroic transforms toChandler Carruth
detect a pattern which can be implemented with a small 'shl' embedded in the addressing mode scale. This happens in real code as follows: unsigned x = my_accelerator_table[input >> 11]; Here we have some lookup table that we look into using the high bits of 'input'. Each entity in the table is 4-bytes, which means this implicitly gets turned into (once lowered out of a GEP): *(unsigned*)((char*)my_accelerator_table + ((input >> 11) << 2)); The shift right followed by a shift left is canonicalized to a smaller shift right and masking off the low bits. That hides the shift right which x86 has an addressing mode designed to support. We now detect masks of this form, and produce the longer shift right followed by the proper addressing mode. In addition to saving a (rather large) instruction, this also reduces stalls in Intel chips on benchmarks I've measured. In order for all of this to work, one part of the DAG needs to be canonicalized *still further* than it currently is. This involves removing pointless 'trunc' nodes between a zextload and a zext. Without that, we end up generating spurious masks and hiding the pattern. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147936 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Improved compile time:Stepan Dyatkovskiy
1. Size heuristics changed. Now we calculate number of unswitching branches only once per loop. 2. Some checks was moved from UnswitchIfProfitable to processCurrentLoop, since it is not changed during processCurrentLoop iteration. It allows decide to skip some loops at an early stage. Extended statistics: - Added total number of instructions analyzed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147935 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Clarified the SCEV getSmallConstantTripCount interface with in-your-face ↵Andrew Trick
comments. This interface is misleading and dangerous, but it is actually what we need for unrolling. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147926 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Add big endian mips support. Based on a patch by Jack Carter.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147924 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Add the skeleton of an asm parser for mips.Rafael Espindola
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147923 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11ARM Ld/St Optimizer fix.Andrew Trick
Allow LDRD to be formed from pairs with different LDR encodings. This was the original intention of the pass. Somewhere along the way, the LDR opcodes were refined which broke the optimization. We really don't care what the original opcodes are as long as they both map to the same LDRD and the immediate still fits. Fixes rdar://10435045 ARMLoadStoreOptimization cannot handle mixed LDRi8/LDRi12 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147922 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Detect when a value is undefined on an edge to a landing pad.Jakob Stoklund Olesen
Consider this code: int h() { int x; try { x = f(); g(); } catch (...) { return x+1; } return x; } The variable x is undefined on the first edge to the landing pad, but it has the f() return value on the second edge to the landing pad. SplitAnalysis::getLastSplitPoint() would assume that the return value from f() was live into the landing pad when f() throws, which is of course impossible. Detect these cases, and treat them as if the landing pad wasn't there. This allows spill code to be inserted after the function call to f(). <rdar://problem/10664933> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147912 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Exclusively use SplitAnalysis::getLastSplitPoint().Jakob Stoklund Olesen
Delete the alternative implementation in LiveIntervalAnalysis. These functions computed the same thing, but SplitAnalysis caches the result. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147911 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Avoid CSE of instructions which define physical registers across MBBs unlessEvan Cheng
the physical registers are not allocatable. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147902 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11If the global variable is removed by the linker, then don't constant merge itBill Wendling
with other symbols. An object in the __cfstring section is suppoed to be filled with CFString objects, which have a pointer to ___CFConstantStringClassReference followed by a pointer to a __cstring. If we allow the object in the __cstring section to be merged with another global, then it could end up in any section. Because the linker is going to remove these symbols in the final executable, we shouldn't bother to merge them. <rdar://problem/10564621> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147899 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-11Don't avoid recursing for pointer types, just reference types. Expand onEric Christopher
the comment. Fixes constvars.exp on the gdb test builder. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147897 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-10Fixed order of operands in comment to match code.Lang Hames
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147890 91177308-0d34-0410-b5e6-96231b3b80d8
2012-01-10Default stack alignment for 32bit x86 should be 4 Bytes, not 8 Bytes.Joerg Sonnenberger
Add a test that checks the stack alignment of a simple function for Darwin, Linux and NetBSD for 32bit and 64bit mode. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147888 91177308-0d34-0410-b5e6-96231b3b80d8
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