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* We don't need to use llvm_report_error, this interface can deal with errorsDaniel Dunbar2009-07-151-2/+2
| | | | | | | (although we don't get a very good error message). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75864 91177308-0d34-0410-b5e6-96231b3b80d8
* Add missing includes.Daniel Dunbar2009-07-151-0/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75862 91177308-0d34-0410-b5e6-96231b3b80d8
* Lift addAssemblyEmitter into LLVMTargetMachine.Daniel Dunbar2009-07-151-0/+11
| | | | | | | - No functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75859 91177308-0d34-0410-b5e6-96231b3b80d8
* Lift DumpAsm / -print-emitted-asm functionality into LLVMTargetMachine.Daniel Dunbar2009-07-151-5/+15
| | | | | | | - No intended functionality change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75848 91177308-0d34-0410-b5e6-96231b3b80d8
* Have asm printers use formatted_raw_ostream directly to avoid aDavid Greene2009-07-141-2/+2
| | | | | | | dynamic_cast<>. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75670 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert an accidental commit.Evan Cheng2009-07-131-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75553 91177308-0d34-0410-b5e6-96231b3b80d8
* Add the Object Code Emitter class. Original patch by Aaron Gray, I did someBruno Cardoso Lopes2009-07-061-0/+17
| | | | | | | | cleanup, removed some #includes and moved Object Code Emitter out-of-line. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74813 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a ARM specific pre-allocation pass that re-schedule loads / stores fromEvan Cheng2009-06-131-1/+1
| | | | | | | | | | | | consecutive addresses togther. This makes it easier for the post-allocation pass to form ldm / stm. This is step 1. We are still missing a lot of ldm / stm opportunities because of register allocation are not done in the desired order. More enhancements coming. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73291 91177308-0d34-0410-b5e6-96231b3b80d8
* First patch in the direction of splitting MachineCodeEmitter in two subclasses:Bruno Cardoso Lopes2009-05-301-0/+43
| | | | | | | | JITCodeEmitter and ObjectCodeEmitter. No functional changes yet. Patch by Aaron Gray git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72631 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a new codegen pass that normalizes dwarf exception handlingDuncan Sands2009-05-221-2/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | code in preparation for code generation. The main thing it does is handle the case when eh.exception calls (and, in a future patch, eh.selector calls) are far away from landing pads. Right now in practice you only find eh.exception calls close to landing pads: either in a landing pad (the common case) or in a landing pad successor, due to loop passes shifting them about. However future exception handling improvements will result in calls far from landing pads: (1) Inlining of rewinds. Consider the following case: In function @f: ... invoke @g to label %normal unwind label %unwinds ... unwinds: %ex = call i8* @llvm.eh.exception() ... In function @g: ... invoke @something to label %continue unwind label %handler ... handler: %ex = call i8* @llvm.eh.exception() ... perform cleanups ... "rethrow exception" Now inline @g into @f. Currently this is turned into: In function @f: ... invoke @something to label %continue unwind label %handler ... handler: %ex = call i8* @llvm.eh.exception() ... perform cleanups ... invoke "rethrow exception" to label %normal unwind label %unwinds unwinds: %ex = call i8* @llvm.eh.exception() ... However we would like to simplify invoke of "rethrow exception" into a branch to the %unwinds label. Then %unwinds is no longer a landing pad, and the eh.exception call there is then far away from any landing pads. (2) Using the unwind instruction for cleanups. It would be nice to have codegen handle the following case: invoke @something to label %continue unwind label %run_cleanups ... handler: ... perform cleanups ... unwind This requires turning "unwind" into a library call, which necessarily takes a pointer to the exception as an argument (this patch also does this unwind lowering). But that means you are using eh.exception again far from a landing pad. (3) Bugpoint simplifications. When bugpoint is simplifying exception handling code it often generates eh.exception calls far from a landing pad, which then causes codegen to assert. Bugpoint then latches on to this assertion and loses sight of the original problem. Note that it is currently rare for this pass to actually do anything. And in fact it normally shouldn't do anything at all given the code coming out of llvm-gcc! But it does fire a few times in the testsuite. As far as I can see this is almost always due to the LoopStrengthReduce codegen pass introducing pointless loop preheader blocks which are landing pads and only contain a branch to another block. This other block contains an eh.exception call. So probably by tweaking LoopStrengthReduce a bit this can be avoided. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72276 91177308-0d34-0410-b5e6-96231b3b80d8
* Pass to verify generated machine code.Jakob Stoklund Olesen2009-05-161-27/+26
| | | | | | | | | | | | | | | | | | | The following is checked: * Operand counts: All explicit operands must be present. * Register classes: All physical and virtual register operands must be compatible with the register class required by the instruction descriptor. * Register live intervals: Registers must be defined only once, and must be defined before use. The machine code verifier is enabled with the command-line option '-verify-machineinstrs', or by defining the environment variable LLVM_VERIFY_MACHINEINSTRS to the name of a file that will receive all the verifier errors. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71918 91177308-0d34-0410-b5e6-96231b3b80d8
* Fixed a stack slot coloring with reg bug: do not update implicit use / def ↵Evan Cheng2009-05-121-2/+1
| | | | | | when doing forward / backward propagation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71574 91177308-0d34-0410-b5e6-96231b3b80d8
* Rename "loop aligner" pass to "code placement optimization" pass.Evan Cheng2009-05-071-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71150 91177308-0d34-0410-b5e6-96231b3b80d8
* Just turn aggressive stack coloring off at -O3.Bill Wendling2009-05-071-1/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71140 91177308-0d34-0410-b5e6-96231b3b80d8
* Temporarily revert r71010. It was causing massive failures during self-hosting.Bill Wendling2009-05-071-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71138 91177308-0d34-0410-b5e6-96231b3b80d8
* Enable stack coloring with regs at -O3.Evan Cheng2009-05-051-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71010 91177308-0d34-0410-b5e6-96231b3b80d8
* Instead of passing in an unsigned value for the optimization level, use an enum,Bill Wendling2009-04-291-14/+14
| | | | | | | | which better identifies what the optimization is doing. And is more flexible for future uses. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70440 91177308-0d34-0410-b5e6-96231b3b80d8
* Second attempt:Bill Wendling2009-04-291-22/+23
| | | | | | | | | | | | | Massive check in. This changes the "-fast" flag to "-O#" in llc. If you want to use the old behavior, the flag is -O0. This change allows for finer-grained control over which optimizations are run at different -O levels. Most of this work was pretty mechanical. The majority of the fixes came from verifying that a "fast" variable wasn't used anymore. The JIT still uses a "Fast" flag. I'll change the JIT with a follow-up patch. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70343 91177308-0d34-0410-b5e6-96231b3b80d8
* r70270 isn't ready yet. Back this out. Sorry for the noise.Bill Wendling2009-04-281-23/+22
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70275 91177308-0d34-0410-b5e6-96231b3b80d8
* Massive check in. This changes the "-fast" flag to "-O#" in llc. If you want toBill Wendling2009-04-281-22/+23
| | | | | | | | | | | | use the old behavior, the flag is -O0. This change allows for finer-grained control over which optimizations are run at different -O levels. Most of this work was pretty mechanical. The majority of the fixes came from verifying that a "fast" variable wasn't used anymore. The JIT still uses a "Fast" flag. I'm not 100% sure if it's necessary to change it there... git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70270 91177308-0d34-0410-b5e6-96231b3b80d8
* CodeGen still defaults to non-verbose asm, but llc now overrides it and ↵Evan Cheng2009-03-251-1/+1
| | | | | | default to verbose. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67668 91177308-0d34-0410-b5e6-96231b3b80d8
* Re-enable machine sinking pass now that the coalescer bugs and the ↵Evan Cheng2009-02-091-8/+2
| | | | | | AnalyzeBrnach bug are fixed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64126 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert r63999. It was breaking self-hosting builds.Bill Wendling2009-02-081-2/+8
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64062 91177308-0d34-0410-b5e6-96231b3b80d8
* Enable machine sinking pass in non-fast mode.Evan Cheng2009-02-071-8/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63999 91177308-0d34-0410-b5e6-96231b3b80d8
* Turn on machine LICM in non-fast mode.Evan Cheng2009-02-051-5/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63855 91177308-0d34-0410-b5e6-96231b3b80d8
* Move post-RA scheduling before branch folding for now, because branchDan Gohman2008-12-181-7/+7
| | | | | | | | folding's tail merging doesn't currently preserve liveness information which post-RA scheduling requires. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61183 91177308-0d34-0410-b5e6-96231b3b80d8
* Run post-RA scheduling after branch folding, as it tends toDan Gohman2008-11-241-4/+7
| | | | | | | obscure tail-merging opportunities. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59967 91177308-0d34-0410-b5e6-96231b3b80d8
* Add another machine-code printing pass when post-pass scheduling is run.Dan Gohman2008-11-201-1/+5
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59746 91177308-0d34-0410-b5e6-96231b3b80d8
* Implement stack protectors as function attributes: "ssp" and "sspreq".Bill Wendling2008-11-131-15/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59202 91177308-0d34-0410-b5e6-96231b3b80d8
* Update in response to feedback from Chris:Bill Wendling2008-11-041-4/+13
| | | | | | | | | | | | | | | | | | - Use enums instead of magic numbers. - Rework algorithm to use the bytes size from the target to determine when to emit stack protectors. - Get rid of "propolice" in any comments. - Renamed an option to its expanded form. - Other miscellanenous changes. More changes will come after this. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58723 91177308-0d34-0410-b5e6-96231b3b80d8
* Initial checkin for stack protectors. Here's what it does:Bill Wendling2008-11-041-0/+7
| | | | | | | | | | | | | | | | | * The prologue is modified to read the __stack_chk_guard global and insert it onto the stack. * The epilogue is modified to read the stored guard from the stack and compare it to the original __stack_chk_guard value. If they differ, then the __stack_chk_fail() function is called. * The stack protector needs to be first on the stack (after the parameters) to catch any stack-smashing activities. Front-end support will follow after a round of beta testing. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58673 91177308-0d34-0410-b5e6-96231b3b80d8
* Move the code that adds the DeadMachineInstructionElimPass fromDan Gohman2008-10-251-4/+0
| | | | | | | | | | | | | target-independent code to target-specific code. This prevents it from running on targets that aren't using fast-isel. In addition to saving compile time, this addresses the problem that not all targets are prepared for it. In order to use this pass, all instructions must declare all their fixed uses and defs of physical registers. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58144 91177308-0d34-0410-b5e6-96231b3b80d8
* Move Print*Pass to use raw_ostream.Daniel Dunbar2008-10-221-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57946 91177308-0d34-0410-b5e6-96231b3b80d8
* Privatize PrintModulePass and PrintFunctionPass and addDaniel Dunbar2008-10-211-3/+4
| | | | | | | | createPrintModulePass and createPrintFunctionPass. - So clients who compile w/o RTTI can use them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57933 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove -disable-fast-isel. Use cl::boolOrDefault with -fast-iselDan Gohman2008-10-071-8/+3
| | | | | | | | | | | instead. So now: -fast-isel or -fast-isel=true enable fast-isel, and -fast-isel=false disables it. Fast-isel is also on by default with -fast, and off by default otherwise. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57270 91177308-0d34-0410-b5e6-96231b3b80d8
* Remove OptimizeForSize global. Use function attribute optsize.Devang Patel2008-10-011-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56937 91177308-0d34-0410-b5e6-96231b3b80d8
* Enable FastISel by default (on x86 and x86-64) with the -fast option.Dan Gohman2008-10-011-4/+16
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56930 91177308-0d34-0410-b5e6-96231b3b80d8
* Enable DeadMachineInstructionElim when Fast-ISel is enabled.Dan Gohman2008-09-251-0/+13
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56604 91177308-0d34-0410-b5e6-96231b3b80d8
* Refactor the code that adds standard LLVM codegen passes intoDan Gohman2008-09-251-109/+44
| | | | | | | | a separate function, eliminating duplication between the add-passes-for-file and add-passes-for-machine-code code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56599 91177308-0d34-0410-b5e6-96231b3b80d8
* Use raw_ostream throughout the AsmPrinter.Owen Anderson2008-08-211-1/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55092 91177308-0d34-0410-b5e6-96231b3b80d8
* Rename some GC classes so that their roll will hopefully be clearer.Gordon Henriksen2008-08-171-4/+4
| | | | | | | | | | | | | | | | | | In particular, Collector was confusing to implementors. Several thought that this compile-time class was the place to implement their runtime GC heap. Of course, it doesn't even exist at runtime. Specifically, the renames are: Collector -> GCStrategy CollectorMetadata -> GCFunctionInfo CollectorModuleMetadata -> GCModuleInfo CollectorRegistry -> GCRegistry Function::getCollector -> getGC (setGC, hasGC, clearGC) Several accessors and nested types have also been renamed to be consistent. These changes should be obvious. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54899 91177308-0d34-0410-b5e6-96231b3b80d8
* Factor GC metadata table assembly generation out of Collector in preparation ↵Gordon Henriksen2008-08-171-1/+1
| | | | | | for splitting AsmPrinter into its own library. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54881 91177308-0d34-0410-b5e6-96231b3b80d8
* Don't run stack slot coloring if -fast.Evan Cheng2008-06-301-2/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52933 91177308-0d34-0410-b5e6-96231b3b80d8
* Enable stack coloring by default.Evan Cheng2008-06-061-8/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52057 91177308-0d34-0410-b5e6-96231b3b80d8
* Oops. Should not be enabled by default.Evan Cheng2008-06-041-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51953 91177308-0d34-0410-b5e6-96231b3b80d8
* Add a stack slot coloring pass. Not yet enabled.Evan Cheng2008-06-041-21/+37
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51934 91177308-0d34-0410-b5e6-96231b3b80d8
* Do not run loop-aligner at -fast (e.g. -O0).Evan Cheng2008-06-031-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51898 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix indentation.Evan Cheng2008-05-301-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51793 91177308-0d34-0410-b5e6-96231b3b80d8
* Unbreak JITAnton Korobeynikov2008-04-231-0/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50173 91177308-0d34-0410-b5e6-96231b3b80d8
* Add facility for pre-RA passesAnton Korobeynikov2008-04-231-0/+4
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50165 91177308-0d34-0410-b5e6-96231b3b80d8
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