[PATCH] D50070: [X86] Improved sched models for X86 CMPXCHG* instructions

[Craig Topper via Phabricator via llvm-commits]

craig.topper added inline comments.


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Comment at: lib/Target/X86/X86SchedSandyBridge.td:119
+defm : X86WriteRes<WriteCMPXCHG,   [SBPort05,SBPort015], 5, [1,3], 4>;
+defm : X86WriteRes<WriteCMPXCHGLd, [SBPort015, SBPort05, SBPort4, SBPort23], 8, [1,2,1,2], 6>;
 
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The port4 and one of the port23 shouldn't be here. They come from WriteRMW that WriteCMPXCHGLd is paired with.


https://reviews.llvm.org/D50070