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* Weekly fix of register allocation dependent unit tests.Jakob Stoklund Olesen2011-04-301-2/+6
| | | | llvm-svn: 130567
* PR8921: LDM/POP do not support interworking prior to v5t.Bob Wilson2011-01-061-1/+1
| | | | llvm-svn: 122970
* Revert r114340 (improvements in Darwin function prologue/epilogue), as it brokeJim Grosbach2010-11-021-1/+1
| | | | | | assumptions about stack layout. Specifically, LR must be saved next to FP. llvm-svn: 118026
* Simplify ARM callee-saved register handling by removing the distinctionJim Grosbach2010-09-201-1/+1
| | | | | | | | | | | | | | | | | | | between the high and low registers for prologue/epilogue code. This was a Darwin-only thing that wasn't providing a realistic benefit anymore. Combining the save areas simplifies the compiler code and results in better ARM/Thumb2 codegen. For example, previously we would generate code like: push {r4, r5, r6, r7, lr} add r7, sp, #12 stmdb sp!, {r8, r10, r11} With this change, we combine the register saves and generate: push {r4, r5, r6, r7, r8, r10, r11, lr} add r7, sp, #12 rdar://8445635 llvm-svn: 114340
* Change if-conversion block size limit checks to add some flexibility.Evan Cheng2010-06-251-1/+1
| | | | llvm-svn: 106901
* Reapply the new LoopStrengthReduction code, with compile time andDan Gohman2010-02-121-2/+2
| | | | | | | | | | bug fixes, and with improved heuristics for analyzing foreign-loop addrecs. This change also flattens IVUsers, eliminating the stride-oriented groupings, which makes it easier to work with. llvm-svn: 95975
* Revert LoopStrengthReduce.cpp to pre-r94061 for now.Dan Gohman2010-01-221-2/+2
| | | | llvm-svn: 94123
* Re-implement the main strength-reduction portion of LoopStrengthReduction.Dan Gohman2010-01-211-2/+2
| | | | | | | | | | | | | | This new version is much more aggressive about doing "full" reduction in cases where it reduces register pressure, and also more aggressive about rewriting induction variables to count down (or up) to zero when doing so reduces register pressure. It currently uses fairly simplistic algorithms for finding reuse opportunities, but it introduces a new framework allows it to combine multiple strategies at once to form hybrid solutions, instead of doing all full-reduction or all base+index. llvm-svn: 94061
* Eliminate more uses of llvm-as and llvm-dis.Dan Gohman2009-09-091-2/+2
| | | | llvm-svn: 81293
* Improved tracking of value number kills. VN kills are now representedLang Hames2009-07-091-1/+1
| | | | | | | | | | | | as an (index,bool) pair. The bool flag records whether the kill is a PHI kill or not. This code will be used to enable splitting of live intervals containing PHI-kills. A slight change to live interval weights introduced an extra spill into lsr-code-insertion (outside the critical sections). The test condition has been updated to reflect this. llvm-svn: 75097
* Mark some pattern-less instructions as neverHasSideEffects.Evan Cheng2009-06-121-1/+1
| | | | llvm-svn: 73252
* Re-enable machine sinking pass now that the coalescer bugs and the ↵Evan Cheng2009-02-091-1/+1
| | | | | | AnalyzeBrnach bug are fixed. llvm-svn: 64126
* Revert r63999. It was breaking self-hosting builds.Bill Wendling2009-02-081-1/+1
| | | | llvm-svn: 64062
* Enable machine sinking pass in non-fast mode.Evan Cheng2009-02-071-1/+1
| | | | llvm-svn: 63999
* Fix for PR1831: if all defs of an interval are re-materializable, then it's ↵Evan Cheng2007-12-061-2/+2
| | | | | | a preferred spill candiate. llvm-svn: 44644
* Fix bug in regression tests that ignored stderr output in RUN lines. Updated ↵Tanya Lattner2007-11-281-1/+1
| | | | | | | | tests and fixed broken run lines. XFAILed 3 arm regressions (will file bugs) llvm-svn: 44389
* For PR1319:Reid Spencer2007-04-161-4/+4
| | | | | | Fix test syntax per new rules. llvm-svn: 36133
* new lsr testcaseChris Lattner2007-04-131-0/+60
llvm-svn: 35971
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