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* Remove little used statistical counter.Devang Patel2011-05-051-29/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130955 91177308-0d34-0410-b5e6-96231b3b80d8
* PR9838: Fix transform introduced in r127064 to not trigger when only one ↵Eli Friedman2011-05-052-2/+2
| | | | | | side of the icmp is an exact shift. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130954 91177308-0d34-0410-b5e6-96231b3b80d8
* Move PPC Linux to CFI.Rafael Espindola2011-05-051-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130951 91177308-0d34-0410-b5e6-96231b3b80d8
* Implement a really simple DwarfSjLjException.Rafael Espindola2011-05-054-0/+68
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130947 91177308-0d34-0410-b5e6-96231b3b80d8
* List all exception types in a switch.Rafael Espindola2011-05-051-14/+15
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130944 91177308-0d34-0410-b5e6-96231b3b80d8
* ARM post RA scheduler compile time fix.Andrew Trick2011-05-051-0/+12
| | | | | | | | | | | | | | | BuildSchedGraph was quadratic in the number of calls in the basic block. After this fix, it keeps only a single call at the top of the DefList so compile time doesn't blow up on large blocks. This reduces postRA sched time on an external test case from 81s to 0.3s. Although r130800 (reduced ARM register alias defs) also partially fixes the issue by reducing the constant overhead of checking call interference by an order of magnitude. Fixes <rdar://problem/7662664> very poor compile time with post RA scheduling. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130943 91177308-0d34-0410-b5e6-96231b3b80d8
* whitespaceAndrew Trick2011-05-051-16/+16
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130942 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't produce a __debug_frame.Rafael Espindola2011-05-051-1/+1
| | | | | | | I tested both gdb on a bootstrapped clang and and the gdb testsuite on OS X (snow leopard) and both are happy using __eh_frame. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130937 91177308-0d34-0410-b5e6-96231b3b80d8
* Allow FastISel of three-register-operand instructions.Owen Anderson2011-05-051-0/+24
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130934 91177308-0d34-0410-b5e6-96231b3b80d8
* If debug info for inlined function is missing then handle it gracefully.Devang Patel2011-05-051-3/+5
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130933 91177308-0d34-0410-b5e6-96231b3b80d8
* PR9848: pandn is not commutative.Eli Friedman2011-05-051-1/+1
| | | | | | | | No test because I can't think of any way to write one that won't break quickly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130932 91177308-0d34-0410-b5e6-96231b3b80d8
* Add some statistics to the splitting and spilling frameworks.Jakob Stoklund Olesen2011-05-053-5/+44
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130931 91177308-0d34-0410-b5e6-96231b3b80d8
* Avoid extra vreg copies for arguments passed in registers. Specifically, ↵Eli Friedman2011-05-052-38/+44
| | | | | | this can make MachineCSE more effective in some cases (especially in small functions). PR8361 / part of rdar://problem/8259436 . git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130928 91177308-0d34-0410-b5e6-96231b3b80d8
* Small syntax cleanup; we don't need to #define constants in C++. No ↵Eli Friedman2011-05-051-3/+3
| | | | | | functionality change intended. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130926 91177308-0d34-0410-b5e6-96231b3b80d8
* Minor correction to r130877; fixes PR9846 and hopefully the buildbot failures.Eli Friedman2011-05-051-1/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130925 91177308-0d34-0410-b5e6-96231b3b80d8
* Minor change: Fix the typo in RegionPass.h and RegionPass.cpp.Hongbin Zheng2011-05-051-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130920 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove a flag that would set the ".eh" symbol as .globl. MachO was the only oneBill Wendling2011-05-053-11/+0
| | | | | | | | | who used this flag, and it now emits CFI and doesn't emit this anymore. All other targets left this flag "false". <rdar://problem/8486371> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130918 91177308-0d34-0410-b5e6-96231b3b80d8
* Update the gcov version used slightly, to make it stop causing modern gcov's toNick Lewycky2011-05-051-13/+20
| | | | | | | crash. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130911 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove dead function.Nick Lewycky2011-05-051-5/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130903 91177308-0d34-0410-b5e6-96231b3b80d8
* When the path wasn't emitted by the frontend, discard any path on the sourceNick Lewycky2011-05-051-6/+11
| | | | | | | filename. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130897 91177308-0d34-0410-b5e6-96231b3b80d8
* Disable physical register coalescing by default.Jakob Stoklund Olesen2011-05-041-1/+1
| | | | | | | | | | | | Joining physregs is inherently dangerous because it uses a heuristic to avoid creating invalid code. Linear scan had an emergency spilling mechanism to deal with those rare cases. The new greedy allocator does not. The greedy register allocator is much better at taking hints, so this has almost no impact on code size and quality. The few cases where it matters show up as unit tests that now have -join-physregs enabled explicitly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130896 91177308-0d34-0410-b5e6-96231b3b80d8
* Set debug loc for new instructions.Devang Patel2011-05-041-3/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130895 91177308-0d34-0410-b5e6-96231b3b80d8
* Set debug location for new PHI nodes created in exit block. Devang Patel2011-05-041-0/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130894 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix X86RegisterInfo::getMatchingSuperRegClass for sub_8bit_hi.Jakob Stoklund Olesen2011-05-041-13/+8
| | | | | | | It is OK for B to be any GR8_ABCD_H superclass, the returned register class doesn't have to map surjectively onto B. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130892 91177308-0d34-0410-b5e6-96231b3b80d8
* SjLj EH could produce a machine basic block that legitimately has more than oneBill Wendling2011-05-041-1/+9
| | | | | | | | | | | | | | landing pad as its successor. SjLj exception handling jumps to the correct landing pad via a switch statement that's generated right before code-gen. Loosen the constraint in the machine instruction verifier to allow for this. Note, this isn't the most rigorous check since we cannot determine where that switch statement came from. But it's marginally better than turning this check off when SjLj exceptions are used. <rdar://problem/9187612> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130881 91177308-0d34-0410-b5e6-96231b3b80d8
* Preserve line number information while threading jumps.Devang Patel2011-05-041-2/+5
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130880 91177308-0d34-0410-b5e6-96231b3b80d8
* Re-commit r130862 with a minor change to avoid an iterator running off the ↵Eli Friedman2011-05-041-27/+49
| | | | | | | | | | | | edge in some cases. Original message: Teach MachineCSE how to do simple cross-block CSE involving physregs. This allows, for example, eliminating duplicate cmpl's on x86. Part of rdar://problem/8259436 . git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130877 91177308-0d34-0410-b5e6-96231b3b80d8
* Preserve line number info.Devang Patel2011-05-041-1/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130876 91177308-0d34-0410-b5e6-96231b3b80d8
* preserve line number info.Devang Patel2011-05-041-2/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130869 91177308-0d34-0410-b5e6-96231b3b80d8
* Back out r130862; it appears to be breaking bootstrap.Eli Friedman2011-05-041-43/+27
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130867 91177308-0d34-0410-b5e6-96231b3b80d8
* Teach MachineCSE how to do simple cross-block CSE involving physregs. This ↵Eli Friedman2011-05-041-27/+43
| | | | | | allows, for example, eliminating duplicate cmpl's on x86. Part of rdar://problem/8259436 . git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130862 91177308-0d34-0410-b5e6-96231b3b80d8
* Implement SystemZRegisterInfo::getMatchingSuperRegClass to enable ↵Jakob Stoklund Olesen2011-05-042-0/+18
| | | | | | cross-class joins. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130857 91177308-0d34-0410-b5e6-96231b3b80d8
* Do not emit location expression size twice.Devang Patel2011-05-041-12/+0
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130854 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix cmake build.Rafael Espindola2011-05-041-0/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130850 91177308-0d34-0410-b5e6-96231b3b80d8
* Prevent instructions using $gp from being placed between a jalr and the ↵Akira Hatanaka2011-05-045-11/+89
| | | | | | instruction that restores the clobbered $gp. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130847 91177308-0d34-0410-b5e6-96231b3b80d8
* Producing a DW_FORM_addr for DW_AT_stmt_list is probably correct, butRafael Espindola2011-05-043-4/+4
| | | | | | | | | | | it is both inefficient and unexpected by dwarfdump. Change to a DW_FORM_data4. While in here, change the predicate name to reflect that the position is not really absolute (it is an offset), just that the linker needs a relocation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130846 91177308-0d34-0410-b5e6-96231b3b80d8
* Rename -disable-physical-join to -join-physregs and invert it.Jakob Stoklund Olesen2011-05-041-4/+4
| | | | | | Physreg joining is still on by default, but I will turn it off shortly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130844 91177308-0d34-0410-b5e6-96231b3b80d8
* Tighten up check for empty (i.e. no meaningful debug info) module. This ↵Devang Patel2011-05-041-15/+17
| | | | | | fixes dwarf-die2.c test case from gcc test suite. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130842 91177308-0d34-0410-b5e6-96231b3b80d8
* Add variations on: max(x,y) >= min(x,z) folds to true. This isn't that common,Duncan Sands2011-05-041-2/+46
| | | | | | | | | but according to my super-optimizer there are only two missed simplifications of -instsimplify kind when compiling bzip2, and this is one of them. It amuses me to have bzip2 be perfectly optimized as far as instsimplify goes! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130840 91177308-0d34-0410-b5e6-96231b3b80d8
* Emit gcov data files to the directory specified in the metadata produced by theNick Lewycky2011-05-041-4/+23
| | | | | | | frontend, if applicable. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130835 91177308-0d34-0410-b5e6-96231b3b80d8
* indvars: Added DisableIVRewrite and WidenIVs.Andrew Trick2011-05-042-9/+130
| | | | | | | | | This adds functionality to remove size/zero extension during indvars without generating a canonical IV and rewriting all IV users. It's disabled by default so should have no effect on codegen. Work in progress. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130829 91177308-0d34-0410-b5e6-96231b3b80d8
* Implement MSP430RegisterInfo::getMatchingSuperRegClass to enable cross-classJakob Stoklund Olesen2011-05-041-0/+7
| | | | | | coalescing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130814 91177308-0d34-0410-b5e6-96231b3b80d8
* Mark ultra-super-registers QQQQ as call-clobbered instead of the D ↵Jakob Stoklund Olesen2011-05-033-32/+11
| | | | | | | | | | | | | | | sub-registers. LiveVariables doesn't understand that clobbering D0 and D1 completely overwrites Q0, so if Q0 is live-in to a function, its live range will extend beyond a function call that only clobbers D0 and D1. This shows up in the ARM/2009-11-01-NeonMoves test case. LiveVariables should probably implement the much stricter rules for physreg liveness that RAFast imposes - a physreg is killed by the first use of any alias. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130801 91177308-0d34-0410-b5e6-96231b3b80d8
* indvars: Added canExpandBackEdgeTakenCount.Andrew Trick2011-05-031-32/+55
| | | | | | | | | | Only create a canonical IV for backedge taken count if it will actually be used by LinearFunctionTestReplace. And some related cleanup, preparing to reduce dependence on canonical IVs. No significant effect on x86 or arm in the test-suite. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130799 91177308-0d34-0410-b5e6-96231b3b80d8
* Even if the subprogram is going to use AT_specification, emit ↵Devang Patel2011-05-031-5/+5
| | | | | | DW_AT_MIPS_linkage_name. This helps gdb and fixes var-path-expr.exp regression reported by gdb testsuite. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130794 91177308-0d34-0410-b5e6-96231b3b80d8
* MCDwarf: Don't save Twine to local variable, this is almost never safe to doDaniel Dunbar2011-05-031-2/+2
| | | | | | | (and should thus never be done). - Should fix a crash on win32. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130793 91177308-0d34-0410-b5e6-96231b3b80d8
* Replace the "movnt" intrinsics with a native store + nontemporal metadata bit.Bill Wendling2011-05-032-38/+44
| | | | | | | <rdar://problem/8460511> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130791 91177308-0d34-0410-b5e6-96231b3b80d8
* Gracefully handle invalid live ranges. Fix PR9831.Jakob Stoklund Olesen2011-05-033-0/+23
| | | | | | | | | | | | | | | | Register coalescing can sometimes create live ranges that end in the middle of a basic block without any killing instruction. When SplitKit detects this, it will repair the live range by shrinking it to its uses. Live range splitting also needs to know about this. When the range shrinks so much that it becomes allocatable, live range splitting fails because it can't find a good split point. It is paranoid about making progress, so an allocatable range is considered an error. The coalescer should really not be creating these bad live ranges. They appear when coalescing dead copies. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130787 91177308-0d34-0410-b5e6-96231b3b80d8
* Implement some basic simplifications involving min/max, for exampleDuncan Sands2011-05-031-0/+118
| | | | | | | | | max(a,b) >= a -> true. According to my super-optimizer, these are by far the most common simplifications (of the -instsimplify kind) that occur in the testsuite and aren't caught by -std-compile-opts. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130780 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix function MipsRegisterInfo::getRegisterNumbering.Akira Hatanaka2011-05-031-10/+10
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130774 91177308-0d34-0410-b5e6-96231b3b80d8
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