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path: root/lib/CodeGen/LLVMTargetMachine.cpp
AgeCommit message (Collapse)Author
2009-07-14Have asm printers use formatted_raw_ostream directly to avoid aDavid Greene
dynamic_cast<>. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75670 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-13Revert an accidental commit.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75553 91177308-0d34-0410-b5e6-96231b3b80d8
2009-07-06Add the Object Code Emitter class. Original patch by Aaron Gray, I did someBruno Cardoso Lopes
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
2009-06-13Add a ARM specific pre-allocation pass that re-schedule loads / stores fromEvan Cheng
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
2009-05-30First patch in the direction of splitting MachineCodeEmitter in two subclasses:Bruno Cardoso Lopes
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
2009-05-22Add a new codegen pass that normalizes dwarf exception handlingDuncan Sands
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
2009-05-16Pass to verify generated machine code.Jakob Stoklund Olesen
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
2009-05-12Fixed a stack slot coloring with reg bug: do not update implicit use / def ↵Evan Cheng
when doing forward / backward propagation. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71574 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-07Rename "loop aligner" pass to "code placement optimization" pass.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71150 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-07Just turn aggressive stack coloring off at -O3.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71140 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-07Temporarily revert r71010. It was causing massive failures during self-hosting.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71138 91177308-0d34-0410-b5e6-96231b3b80d8
2009-05-05Enable stack coloring with regs at -O3.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71010 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-29Instead of passing in an unsigned value for the optimization level, use an enum,Bill Wendling
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
2009-04-29Second attempt:Bill Wendling
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
2009-04-28r70270 isn't ready yet. Back this out. Sorry for the noise.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70275 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-28Massive check in. This changes the "-fast" flag to "-O#" in llc. If you want toBill Wendling
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
2009-03-25CodeGen still defaults to non-verbose asm, but llc now overrides it and ↵Evan Cheng
default to verbose. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67668 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-09Re-enable machine sinking pass now that the coalescer bugs and the ↵Evan Cheng
AnalyzeBrnach bug are fixed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64126 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-08Revert r63999. It was breaking self-hosting builds.Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64062 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-07Enable machine sinking pass in non-fast mode.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63999 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-05Turn on machine LICM in non-fast mode.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63855 91177308-0d34-0410-b5e6-96231b3b80d8
2008-12-18Move post-RA scheduling before branch folding for now, because branchDan Gohman
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
2008-11-24Run post-RA scheduling after branch folding, as it tends toDan Gohman
obscure tail-merging opportunities. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59967 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-20Add another machine-code printing pass when post-pass scheduling is run.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59746 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-13Implement stack protectors as function attributes: "ssp" and "sspreq".Bill Wendling
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@59202 91177308-0d34-0410-b5e6-96231b3b80d8
2008-11-04Update in response to feedback from Chris:Bill Wendling
- 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
2008-11-04Initial checkin for stack protectors. Here's what it does:Bill Wendling
* 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
2008-10-25Move the code that adds the DeadMachineInstructionElimPass fromDan Gohman
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
2008-10-22Move Print*Pass to use raw_ostream.Daniel Dunbar
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57946 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-21Privatize PrintModulePass and PrintFunctionPass and addDaniel Dunbar
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
2008-10-07Remove -disable-fast-isel. Use cl::boolOrDefault with -fast-iselDan Gohman
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
2008-10-01Remove OptimizeForSize global. Use function attribute optsize.Devang Patel
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56937 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-01Enable FastISel by default (on x86 and x86-64) with the -fast option.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56930 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-25Enable DeadMachineInstructionElim when Fast-ISel is enabled.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56604 91177308-0d34-0410-b5e6-96231b3b80d8
2008-09-25Refactor the code that adds standard LLVM codegen passes intoDan Gohman
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
2008-08-21Use raw_ostream throughout the AsmPrinter.Owen Anderson
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55092 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-17Rename some GC classes so that their roll will hopefully be clearer.Gordon Henriksen
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
2008-08-17Factor GC metadata table assembly generation out of Collector in preparation ↵Gordon Henriksen
for splitting AsmPrinter into its own library. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54881 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-30Don't run stack slot coloring if -fast.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52933 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-06Enable stack coloring by default.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52057 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-04Oops. Should not be enabled by default.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51953 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-04Add a stack slot coloring pass. Not yet enabled.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51934 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-03Do not run loop-aligner at -fast (e.g. -O0).Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51898 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-30Fix indentation.Evan Cheng
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51793 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-23Unbreak JITAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50173 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-23Add facility for pre-RA passesAnton Korobeynikov
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50165 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-02Recommitting EH patch; this should answer most of theDale Johannesen
review feedback. -enable-eh is still accepted but doesn't do anything. EH intrinsics use Dwarf EH if the target supports that, and are handled by LowerInvoke otherwise. The separation of the EH table and frame move data is, I think, logically figured out, but either one still causes full EH info to be generated (not sure how to split the metadata correctly). MachineModuleInfo::needsFrameInfo is no longer used and is removed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49064 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-01Revert 49006 for the moment.Dale Johannesen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49046 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-31Emit exception handling info for functions which areDale Johannesen
not marked nounwind, or for all functions when -enable-eh is set, provided the target supports Dwarf EH. llvm-gcc generates nounwind in the right places; other FEs will need to do so also. Given such a FE, -enable-eh should no longer be needed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49006 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-25Avoid outputing spaces at the ends of lines.Dan Gohman
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48797 91177308-0d34-0410-b5e6-96231b3b80d8
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