[PATCH] D138260: [RISCV] Prevent constant hoisting for (and (shl X, C), mask<<C)

Luís Marques via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Mon Nov 21 02:26:00 PST 2022


luismarques accepted this revision.
luismarques added a comment.
This revision is now accepted and ready to land.

LGTM.



================
Comment at: llvm/test/Transforms/ConstantHoisting/RISCV/immediates.ll:85
+
+define i32 @test10(i32 %a, i32 %b) nounwind {
+; CHECK-LABEL: @test10(
----------------
Nit: having a comment here with the rationale from the summary ("If the immediate is a shifted mask, we will use a pair of shifts and never materialize the immediate") would be convenient, since without the assembly code that might not be obvious.


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https://reviews.llvm.org/D138260



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