http://llvm.org/bugs/show_bug.cgi?id=22548
Bug ID: 22548
Summary: Register coalescer crash with sub-reg liveness enabled
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Register Allocator
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
I've run into a crash in the regsiter coalescer when sub-reg liveness is
enabled in the R600 backend. The test case has been committed to ToT, and to
reproduce you will need to modify AMDGPUSubtarget::enableSubRegLiveness() to
return true and then run the test with llc:
llc -march=amdgcn test/CodeGen/R600/subreg-coalescer-crash.ll -o -
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