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path: root/llvm/lib/Target/X86/X86SelectionDAGInfo.cpp
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* Some ARM implementaions, e.g. A-series, does return stack prediction. That is,Evan Cheng2012-02-281-1/+2
| | | | | | | | | | | | | | | | | the processor keeps a return addresses stack (RAS) which stores the address and the instruction execution state of the instruction after a function-call type branch instruction. Calling a "noreturn" function with normal call instructions (e.g. bl) can corrupt RAS and causes 100% return misprediction so LLVM should use a unconditional branch instead. i.e. mov lr, pc b _foo The "mov lr, pc" is issued in order to get proper backtrace. rdar://8979299 llvm-svn: 151623
* land David Blaikie's patch to de-constify Type, with a few tweaks.Chris Lattner2011-07-181-1/+1
| | | | llvm-svn: 135375
* Fix a ton of comment typos found by codespell. Patch byChris Lattner2011-04-151-1/+1
| | | | | | Luis Felipe Strano Moraes! llvm-svn: 129558
* rename MVT::Flag to MVT::Glue. "Flag" is a terrible name forChris Lattner2010-12-211-3/+3
| | | | | | | something that just glues two nodes together, even if it is sometimes used for flags. llvm-svn: 122310
* When passing a huge parameter using the byval mechanism, a longDuncan Sands2010-11-041-7/+17
| | | | | | | | | sequence of loads and stores was being generated to perform the copy on the x86 targets if the parameter was less than 4 byte aligned, causing llc to use up vast amounts of memory and time. Use a "rep movs" form instead. PR7170. llvm-svn: 118260
* Fix a bug where the x86 backend would lower memcpy/memset of segment ↵Chris Lattner2010-09-211-0/+9
| | | | | | | | relative operations into non-segment-relative copies. llvm-svn: 114402
* reimplement memcpy/memmove/memset lowering to use MachinePointerInfoChris Lattner2010-09-211-9/+6
| | | | | | | instead of srcvalue/offset pairs. This corrects SV info for mem operations whose size is > 32-bits. llvm-svn: 114401
* Implement a bunch more TargetSelectionDAGInfo infrastructure.Dan Gohman2010-05-111-2/+223
| | | | | | | | Move EmitTargetCodeForMemcpy, EmitTargetCodeForMemset, and EmitTargetCodeForMemmove out of TargetLowering and into SelectionDAGInfo to exercise this. llvm-svn: 103481
* Add skeleton target-specific SelectionDAGInfo files.Dan Gohman2010-04-161-0/+22
llvm-svn: 101564
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