[PATCH] D81358: [PowerPC] Implement probing for dynamic stack allocation

[Kai Luo via Phabricator via llvm-commits]

lkail marked an inline comment as done.
lkail added inline comments.


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Comment at: llvm/lib/Target/PowerPC/PPCISelLowering.cpp:11696
+    Register CmpResult = MRI.createVirtualRegister(&PPC::CRRCRegClass);
+    BuildMI(TestMBB, DL, TII->get(isPPC64 ? PPC::CMPD : PPC::CMPW), CmpResult)
+        .addReg(SPReg)
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steven.zhang wrote:
> Can we use the CTR loop ?
Yes, we can, but it looks not worth the effort, since the trip count can be zero, we have to add additional code to check this case.


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  https://reviews.llvm.org/D81358/new/

https://reviews.llvm.org/D81358