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* Re-apply 85799. It turns out my code isn't buggy.Evan Cheng2009-11-031-3/+5
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85947 91177308-0d34-0410-b5e6-96231b3b80d8
* Revert 85799 for now. It might be breaking llvm-gcc driver.Evan Cheng2009-11-021-5/+3
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85827 91177308-0d34-0410-b5e6-96231b3b80d8
* Initilize the machine LICM CSE map upon the first time an instruction is ↵Evan Cheng2009-11-021-3/+5
| | | | | | | | | | | hoisted to the loop preheader. Add instructions which are already in the preheader block that may be common expressions of those that are hoisted out. These does get a few more instructions CSE'ed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85799 91177308-0d34-0410-b5e6-96231b3b80d8
* Eliminate more uses of llvm-as and llvm-dis.Dan Gohman2009-09-081-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81290 91177308-0d34-0410-b5e6-96231b3b80d8
* Split the Add, Sub, and Mul instruction opcodes into separateDan Gohman2009-06-041-2/+2
| | | | | | | | | | | | | | | | integer and floating-point opcodes, introducing FAdd, FSub, and FMul. For now, the AsmParser, BitcodeReader, and IRBuilder all preserve backwards compatability, and the Core LLVM APIs preserve backwards compatibility for IR producers. Most front-ends won't need to change immediately. This implements the first step of the plan outlined here: http://nondot.org/sabre/LLVMNotes/IntegerOverflow.txt git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72897 91177308-0d34-0410-b5e6-96231b3b80d8
* Reverse a loop that is counting up to a maximum toDale Johannesen2009-05-111-1/+3
| | | | | | | | | | count down to 0 instead, under very restricted circumstances. Adjust 4 testcases in which this optimization fires. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71439 91177308-0d34-0410-b5e6-96231b3b80d8
* Eliminate another use of -disable-correct-folding.Owen Anderson2008-08-051-7/+8
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54356 91177308-0d34-0410-b5e6-96231b3b80d8
* Update these tests to work by disabling the new correct CFG generation. ↵Owen Anderson2008-08-041-1/+1
| | | | | | This flag should ONLY be used to for tests like these. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54334 91177308-0d34-0410-b5e6-96231b3b80d8
* Enable two-address remat by default.Evan Cheng2008-06-251-1/+1
| | | | git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52701 91177308-0d34-0410-b5e6-96231b3b80d8
* Do not fold reload into an instruction with multiple uses. It issues one ↵Evan Cheng2007-11-301-0/+81
extra load. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44467 91177308-0d34-0410-b5e6-96231b3b80d8
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