[PATCH] D53080: [X86] X86ISelLowering: combineAndIntoBEXTR(): support shifted mask.

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri added inline comments.


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Comment at: test/CodeGen/X86/extract-bits.ll:6599
+; X64-BMI1NOTBMBMI2-NEXT:    bextrq %rax, %rdi, %rax
+; X64-BMI1NOTBMBMI2-NEXT:    shlq $2, %rax
+; X64-BMI1NOTBMBMI2-NEXT:    movq %rax, (%rsi)
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Hm, indeed, these tests degrade.
I don't have any good ideas on how to avoid this.


Repository:
  rL LLVM

https://reviews.llvm.org/D53080