[PATCH] D38027: [X86] Add new attribute to X86 instructions to enable marking them as "not memory foldable"

Craig Topper via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Tue Sep 19 11:05:02 PDT 2017


craig.topper added inline comments.


================
Comment at: lib/Target/X86/X86InstrSSE.td:3211
+                      SSEPackedSingle, itins, "SS">, XS, VEX_4V, VEX_LIG, VEX_WIG,
+                      NotMemoryFoldable;
 }
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Why are AVX and SSE different here?

This looks like it corresponds to things like VSQRTSSr which I see in the folding table today.


https://reviews.llvm.org/D38027





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