https://bugs.llvm.org/show_bug.cgi?id=34847
Bug ID: 34847
Summary: Csmith program gives bad checksum with
-optimize-regalloc=false
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Register Allocator
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Created attachment 19241
--> https://bugs.llvm.org/attachment.cgi?id=19241&action=edit
reduced testcase
I have reduced a csmith program that prints
bin/clang -O3 -march=z13 tc_regalloc.bc -o a.out -w ; ./a.out
checksum = 3FB78BC1
but,
bin/clang -O3 -march=z13 tc_regalloc.bc -o a.out -w -mllvm
-optimize-regalloc=false ; ./a.out
checksum = 9E0D2F27
I had originally made a batch run with 14 different compilations with many
randomized options, which all had the 3FB... checksum, so therefore I would
guess that any other checksum is wrong.
I have used bugpoint with a script that checks the checksums for every bugpoint
program, so I am not sure if doing so is the best thing, but the checksums are
the same as for the original program.
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