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[ARM] Implement target hook function to decide folding (mul (add x, c1), c2)
authorBen Shi <powerman1st@163.com>
Tue, 7 Sep 2021 02:21:38 +0000 (10:21 +0800)
committerBen Shi <powerman1st@163.com>
Tue, 7 Sep 2021 07:42:43 +0000 (15:42 +0800)
commit63ca9371c7b4eb8fff01d998963cf901b658c7d4
treee2e529a89cad508108791ab70acb7dea3b0ce9a8tree | snapshot
parent20f890696f10c13342bc1806f4ac9abb63d3153fcommit | diff
[ARM] Implement target hook function to decide folding (mul (add x, c1), c2)

Prevent the folding in DAGCombine if it leads to worse code.

Reviewed By: dmgreen

Differential Revision: https://reviews.llvm.org/D109124
llvm/lib/Target/ARM/ARMISelLowering.cpp diff | blob | history
llvm/lib/Target/ARM/ARMISelLowering.h diff | blob | history
llvm/test/CodeGen/ARM/addimm-mulimm.ll diff | blob | history
llvm/test/CodeGen/ARM/urem-seteq-illegal-types.ll diff | blob | history
llvm/test/CodeGen/Thumb/urem-seteq-illegal-types.ll diff | blob | history
Domain: System / Toolchain;