[PATCH] D39976: [AArch64] Consider the cost model when folding loads and stores

[Evandro Menezes via Phabricator via llvm-commits]

evandro added inline comments.


================
Comment at: llvm/lib/Target/AArch64/AArch64LoadStoreOptimizer.cpp:697
+  else if (NewLat == (OldALat + OldBLat))
+    return (NewSD->NumMicroOps < (OldASD->NumMicroOps + OldBSD->NumMicroOps));
+
----------------
junbuml wrote:
> Why don't we use  <= , instead of < ? 
Because typically decoding an instruction into multiple uops costs more in the front end of the pipeline than decoding multiple instructions into single uops.


https://reviews.llvm.org/D39976