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6 Commits

Author SHA1 Message Date
Pranav Bhandarkar
4c3d3ecdf8 LLVM Bug Fix 13709: Remove needless lsr(Rp, #32) instruction access the 
subreg_hireg of register pair Rp.

	* lib/Target/Hexagon/HexagonPeephole.cpp(PeepholeDoubleRegsMap): New
	 DenseMap similar to PeepholeMap that additionally records subreg info
	 too.
        (runOnMachineFunction): Record information in PeepholeDoubleRegsMap
        and copy propagate the high sub-reg of Rp0 in Rp1 = lsr(Rp0, #32) to
	the instruction Rx = COPY Rp1:logreg_subreg.
	* test/CodeGen/Hexagon/remove_lsr.ll: New test.
	



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163214 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-09-05 16:01:40 +00:00
Craig Topper
79aa3417eb Reorder includes in Target backends to following coding standards. Remove some superfluous forward declarations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152997 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-17 18:46:09 +00:00
Benjamin Kramer
120cfdf0e0 Remove unused cl::opt, make another opt static. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151398 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-24 22:09:25 +00:00
Sirish Pande
ab7955b9ce Optimize redundant sign extends and negation of predicates. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150606 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-15 18:52:27 +00:00
Eric Christopher
2a4bc1e703 Revert "Replacing HexagonOptimizeSZExtends with HexagonPeephole." 
This reverts commit 1656806a944bbd23e98c6e578810fe02495ab741.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150605 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-15 18:34:25 +00:00
Sirish Pande
a997b3e51a Replacing HexagonOptimizeSZExtends with HexagonPeephole. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150603 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-02-15 18:31:35 +00:00