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* simplify-libcalls: fold strncmp(x, y, 1) -> memcmp(x, y, 1)Benjamin Kramer2010-06-161-0/+3
| | | | | | | | The memcmp will be optimized further and even the pathological case 'strstr(x, "x") == x' generates optimal code now. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106097 91177308-0d34-0410-b5e6-96231b3b80d8
* Make post-ra scheduling, anti-dep breaking, and register scavenger ↵Evan Cheng2010-06-169-94/+271
| | | | | | (conservatively) aware of predicated instructions. This enables ARM to move if-conversion before post-ra scheduler. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106091 91177308-0d34-0410-b5e6-96231b3b80d8
* Check function pointer first, before comparing function names.Devang Patel2010-06-161-0/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106088 91177308-0d34-0410-b5e6-96231b3b80d8
* Use separate named MDNode to hold each function's local variable info.Devang Patel2010-06-163-4/+16
| | | | | | | This speeds up local variable handling in DwarfDebug. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106075 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't emit the linkage for initializer label for mach-o tls.Eric Christopher2010-06-161-1/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106073 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix indentation.Eric Christopher2010-06-161-4/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106072 91177308-0d34-0410-b5e6-96231b3b80d8
* Create a more targeted fix for not sinking instructions into a range where itBill Wendling2010-06-152-50/+30
| | | | | | | | | | will conflict with another live range. The place which creates this scenerio is the code in X86 that lowers a select instruction by splitting the MBBs. This eliminates the need to check from the bottom up in an MBB for live pregs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106066 91177308-0d34-0410-b5e6-96231b3b80d8
* For 32-bit non-pic tlv mach-o addressing we don't need a pic base orEric Christopher2010-06-151-0/+9
| | | | | | | a relative address. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106064 91177308-0d34-0410-b5e6-96231b3b80d8
* Added a comment.Stuart Hastings2010-06-151-0/+5
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106063 91177308-0d34-0410-b5e6-96231b3b80d8
* Some more work on mach-o TLV relocations.Eric Christopher2010-06-151-0/+38
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106062 91177308-0d34-0410-b5e6-96231b3b80d8
* Add file missing from previous commit.Dale Johannesen2010-06-151-6/+14
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106058 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix 80col violations, remove trailing whitespace, and clarify a comment.Bob Wilson2010-06-151-14/+15
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106057 91177308-0d34-0410-b5e6-96231b3b80d8
* Next round of tail call changes. Register used in a tailDale Johannesen2010-06-156-22/+107
| | | | | | | | | | call must not be callee-saved; following x86, add a new regclass to represent this. Also fixes a couple of bugs. Still disabled by default; Thumb doesn't work yet. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106053 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove the local register allocator.Jakob Stoklund Olesen2010-06-152-1255/+0
| | | | | | Please use the fast allocator instead. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106051 91177308-0d34-0410-b5e6-96231b3b80d8
* Reapply 105986 with fix for bug pointed out by Jakob:Dale Johannesen2010-06-151-2/+4
| | | | | | | | | | | flag argument to addReg is not the same format as flags attached to MachineOperand, although both have the same info. I don't think this actually mattered; the bootstrap failure did not reproduce on the next run anyway. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106049 91177308-0d34-0410-b5e6-96231b3b80d8
* simplify-libcalls: fold strstr(a, b) == a -> strncmp(a, b, strlen(b)) == 0Benjamin Kramer2010-06-152-0/+56
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106047 91177308-0d34-0410-b5e6-96231b3b80d8
* Fixed vector widening of binary instructions that can trap. Patch by Visa ↵Mon P Wang2010-06-151-27/+71
| | | | | | Putkinen! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106038 91177308-0d34-0410-b5e6-96231b3b80d8
* fpcmp: Fix bug where fpcmp wouldn't early exit when files obviously differ andDaniel Dunbar2010-06-151-9/+9
| | | | | | no tolerance is set. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106033 91177308-0d34-0410-b5e6-96231b3b80d8
* fpcmp: Fix a possible infinite loop when comparing something like:Daniel Dunbar2010-06-151-0/+8
| | | | | | | | | 1..19 ok to 1..20 o k (yes, the odd space is necessary). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106032 91177308-0d34-0410-b5e6-96231b3b80d8
* fix fastisel to handle GS and FS relative pointers. Patch byChris Lattner2010-06-151-0/+5
| | | | | | | Nelson Elhage! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106031 91177308-0d34-0410-b5e6-96231b3b80d8
* Add basic support for NEON modified immediates besides VMOV.Bob Wilson2010-06-153-13/+25
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106030 91177308-0d34-0410-b5e6-96231b3b80d8
* IfConversion's AnalyzeBlocks method always returns false; clean it up.Bob Wilson2010-06-151-9/+5
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106027 91177308-0d34-0410-b5e6-96231b3b80d8
* fix namingJim Grosbach2010-06-151-3/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106024 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix an exotic bug that only showed up in an internal test case.Jakob Stoklund Olesen2010-06-151-2/+4
| | | | | | | | SimpleRegisterCoalescing::JoinIntervals() uses CoalescerPair to determine if a copy is coalescable, and in very rare cases it can return true where LHS is not live - the coalescable copy can come from an alias of the physreg in LHS. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106021 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix a comment typo.Bob Wilson2010-06-151-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106015 91177308-0d34-0410-b5e6-96231b3b80d8
* Add some missing checks for the case where the extract_subregs areBob Wilson2010-06-151-22/+23
| | | | | | | | | combined to an insert_subreg, i.e., where the destination register is larger than the source. We need to check that the subregs can be composed for that case in a symmetrical way to the case when the destination is smaller. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106004 91177308-0d34-0410-b5e6-96231b3b80d8
* Avoid processing early clobbers twice in RegAllocFast.Jakob Stoklund Olesen2010-06-151-3/+8
| | | | | | | | | Early clobbers defining a virtual register were first alocated to a physreg and then processed as a physreg EC, spilling the virtreg. This fixes PR7382. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105998 91177308-0d34-0410-b5e6-96231b3b80d8
* Add CoalescerPair helper class.Jakob Stoklund Olesen2010-06-153-40/+174
| | | | | | | | | | | | | | | | | | | | Given a copy instruction, CoalescerPair can determine which registers to coalesce in order to eliminate the copy. It deals with all the subreg fun to determine a tuple (DstReg, SrcReg, SubIdx) such that: - SrcReg is a virtual register that will disappear after coalescing. - DstReg is a virtual or physical register whose live range will be extended. - SubIdx is 0 when DstReg is a physical register. - SrcReg can be joined with DstReg:SubIdx. CoalescerPair::isCoalescable() determines if another copy instruction is compatible with the same tuple. This fixes some NEON miscompilations where shuffles are getting coalesced as if they were copies. The CoalescerPair class will replace a lot of the spaghetti logic in JoinCopy later. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105997 91177308-0d34-0410-b5e6-96231b3b80d8
* Add <cstddef> include to get ptrdiff_t, for gcc-4.6; patch by Dimitry Andric.Daniel Dunbar2010-06-151-0/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105994 91177308-0d34-0410-b5e6-96231b3b80d8
* Generalize the pre-coalescing of extract_subregs feeding reg_sequences,Bob Wilson2010-06-151-33/+83
| | | | | | | | | | replacing the overly conservative checks that I had introduced recently to deal with correctness issues. This makes a pretty noticable difference in our testcases where reg_sequences are used. I've updated one test to check that we no longer emit the unnecessary subreg moves. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105991 91177308-0d34-0410-b5e6-96231b3b80d8
* VMOVQQ and VMOVQQQQ are pseudo instructions and not predicable.Bob Wilson2010-06-151-1/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105990 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert 105986; looks like I'd better try bootstrapping.Dale Johannesen2010-06-151-4/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105988 91177308-0d34-0410-b5e6-96231b3b80d8
* Update CMake build.Ted Kremenek2010-06-151-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105987 91177308-0d34-0410-b5e6-96231b3b80d8
* The form of BuildMI used for TAILJMPr was changing the registerDale Johannesen2010-06-151-2/+4
| | | | | | | | | | containing the target address, an input, into an output. I don't think this actually broke anything on x86 (it does on ARM), but it's wrong. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105986 91177308-0d34-0410-b5e6-96231b3b80d8
* Make sure to skip dbg_value instructions when finding an insertion point forJim Grosbach2010-06-151-1/+2
| | | | | | the combined load/store instruction. rdar://7797940 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105982 91177308-0d34-0410-b5e6-96231b3b80d8
* Rename functions referring to VMOV immediates to refer to NEON "modifiedBob Wilson2010-06-143-30/+34
| | | | | | | | | immediate" operands. These functions have so far only been used for VMOV but they also apply to other NEON instructions with modified immediate operands. No functional changes. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105969 91177308-0d34-0410-b5e6-96231b3b80d8
* More dbg_value cleanup so the presence of debug info doesn't affect code-gen.Jim Grosbach2010-06-141-2/+21
| | | | | | | Make sure to skip the dbg_value instructions when moving dups out of the diamond. rdar://7797940 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105965 91177308-0d34-0410-b5e6-96231b3b80d8
* - Do away with SimpleHazardRecognizer.h. It's not used and offers little value.Evan Cheng2010-06-145-225/+20
| | | | | | | - Rename ExactHazardRecognizer to PostRAHazardRecognizer and move its header to include to allow targets to extend it. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105959 91177308-0d34-0410-b5e6-96231b3b80d8
* Avoid uncessary array copying.Evan Cheng2010-06-141-7/+19
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105955 91177308-0d34-0410-b5e6-96231b3b80d8
* fix a nasty bug where we were not treating available_externallyChris Lattner2010-06-141-3/+6
| | | | | | | | | | | | | symbols as declarations in the X86 backend. This would manifest on darwin x86-32 as errors like this with -fvisibility=hidden: symbol '__ZNSbIcED1Ev' can not be undefined in a subtraction expression This fixes PR7353. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105954 91177308-0d34-0410-b5e6-96231b3b80d8
* jump threading can't split a critical edge from an indirectbr. ThisChris Lattner2010-06-141-1/+6
| | | | | | | fixes PR7356. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105950 91177308-0d34-0410-b5e6-96231b3b80d8
* fix a -Wbool-conversions warning from clang.Chris Lattner2010-06-141-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105943 91177308-0d34-0410-b5e6-96231b3b80d8
* fix a -Wbool-conversions warning from clang.Chris Lattner2010-06-141-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105942 91177308-0d34-0410-b5e6-96231b3b80d8
* Add back some possible optimizations for va_arg, with wording that makes itEli Friedman2010-06-141-0/+31
| | | | | | | | more clear what exactly is missing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105934 91177308-0d34-0410-b5e6-96231b3b80d8
* SimplifyCFG: don't turn volatile stores to null/undef into unreachable. ↵Benjamin Kramer2010-06-131-0/+3
| | | | | | Fixes PR7369. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105914 91177308-0d34-0410-b5e6-96231b3b80d8
* Merge getStoreRegOpcode and getLoadRegOpcode.Rafael Espindola2010-06-121-97/+47
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105900 91177308-0d34-0410-b5e6-96231b3b80d8
* improve verifier error about unterminated block to includeChris Lattner2010-06-121-1/+2
| | | | | | | function name, patch by Yuri git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105887 91177308-0d34-0410-b5e6-96231b3b80d8
* Add README entry; based on testcase from Bill Hart.Eli Friedman2010-06-121-0/+44
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105878 91177308-0d34-0410-b5e6-96231b3b80d8
* make the avx intrinsics 3 addressBruno Cardoso Lopes2010-06-121-4/+12
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105876 91177308-0d34-0410-b5e6-96231b3b80d8
* Add some basic fp intrinsics for AVXBruno Cardoso Lopes2010-06-121-0/+32
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105873 91177308-0d34-0410-b5e6-96231b3b80d8
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