[PATCH] D132322: [AArch64][SelectionDAG] Optimize multiplication by constant

[Allen zhong via Phabricator via llvm-commits]

Allen marked an inline comment as done.
Allen added inline comments.


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Comment at: llvm/lib/Target/AArch64/AArch64ISelLowering.cpp:13602
+
+    // Optimize the MUL to (SH*ADD x, (SLLI x, bits)).
+    if ((Imm - 2).isPowerOf2() || (Imm - 4).isPowerOf2() ||
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craig.topper wrote:
> Is this copied from RISC-V? That doesn't look like an AArch64 instruction name
yes, I updated comment, thanks @craig.topper


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  https://reviews.llvm.org/D132322/new/

https://reviews.llvm.org/D132322