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* Fix a bug which prevented tail merging of return instructions inDan Gohman2010-05-031-3/+3
| | | | | | | | | | | | | | | | | | | | | beneficial cases. See the changes in test/CodeGen/X86/tail-opts.ll and test/CodeGen/ARM/ifcvt2.ll for details. The fix is to change HashEndOfMBB to hash at most one instruction, instead of trying to apply heuristics about when it will be profitable to consider more than one instruction. The regular tail-merging heuristics are already prepared to handle the same cases, and they're more precise. Also, make test/CodeGen/ARM/ifcvt5.ll and test/CodeGen/Thumb2/thumb2-branch.ll slightly more complex so that they continue to test what they're intended to test. And, this eliminates the problem in test/CodeGen/Thumb2/2009-10-15-ITBlockBranch.ll, the testcase from PR5204. Update it accordingly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102907 91177308-0d34-0410-b5e6-96231b3b80d8
* Stop using the old pre-UAL syntax for LDM/STM instruction suffixes.Bob Wilson2010-03-161-1/+1
| | | | | | | | This does not move entirely to UAL syntax, since the default "increment after" suffix is empty but we still use "IA" for that. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98635 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert 89562. We're being sneakier than I was giving us credit for, and thisJim Grosbach2009-11-211-2/+0
| | | | | | | | isn't necessary. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89568 91177308-0d34-0410-b5e6-96231b3b80d8
* Darwin requires a frame pointer for all non-leaf functions to support correctJim Grosbach2009-11-211-0/+2
| | | | | | | | backtraces. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89562 91177308-0d34-0410-b5e6-96231b3b80d8
* Use Unified Assembly Syntax for the ARM backend.Jim Grosbach2009-11-091-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86494 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert 84843. Evan, this was breaking some of the if-conversion tests.Bob Wilson2009-10-221-2/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84868 91177308-0d34-0410-b5e6-96231b3b80d8
* Move if-conversion before post-regalloc scheduling so the predicated ↵Evan Cheng2009-10-221-1/+2
| | | | | | instruction get scheduled properly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84843 91177308-0d34-0410-b5e6-96231b3b80d8
* Fix tests.Evan Cheng2009-10-021-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83241 91177308-0d34-0410-b5e6-96231b3b80d8
* Move load / store multiple before post-alloc scheduling.Evan Cheng2009-10-021-2/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83236 91177308-0d34-0410-b5e6-96231b3b80d8
* Eliminate more uses of llvm-as and llvm-dis.Dan Gohman2009-09-091-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81293 91177308-0d34-0410-b5e6-96231b3b80d8
* -enable-arm-if-conversion is gone.Evan Cheng2007-09-201-2/+2
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42169 91177308-0d34-0410-b5e6-96231b3b80d8
* Convert tests using "| wc -l | grep ..." to use the count script.Dan Gohman2007-08-151-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41097 91177308-0d34-0410-b5e6-96231b3b80d8
* Added some if-conversion tests.Evan Cheng2007-06-201-0/+24
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37672 91177308-0d34-0410-b5e6-96231b3b80d8
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