maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
146,225 Commits 23 Branches 0 Tags 2.2 GiB
Commit Graph

1 Commits

Author SHA1 Message Date
Pranav Bhandarkar 823f9ebaa3 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.
	

llvm-svn: 163214
 2012-09-05 16:01:40 +00:00