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2013 Jul 22
0
[LLVMdev] Predication bug in AggressiveAntiDepBreaker?
...=============================
--- AggressiveAntiDepBreaker.cpp (revision 186828)
+++ AggressiveAntiDepBreaker.cpp (working copy)
@@ -399,7 +399,7 @@
unsigned Reg = MO.getReg();
if (Reg == 0) continue;
// Ignore KILLs and passthru registers for liveness...
- if (MI->isKill() || (PassthruRegs.count(Reg) != 0))
+ if (MI->isKill() || (PassthruRegs.count(Reg) != 0) || TII->isPredicated(MI))
continue;
// Update def for Reg and aliases.
2015 Jan 01
2
[LLVMdev] What is dead def?
I saw there is reference to dead def on registers in LLVM source code. I am
not aware of this concept from the traditional course material. What are
the properties of dead def?
Cheers
Thomson
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