Comments (1)
Souper IR reproducer:
%0:i32 = var
%1 = block 2
%2 = block 2
%3 = block 2
%4:i32 = var
%5:i32 = or %0, %4
%6:i32 = phi %3, %5, 0:i32
%7:i32 = or %0, %6
%8:i32 = phi %2, %7, 0:i32
%9:i32 = or %0, %8
%10:i32 = phi %1, %9, 0:i32
%11:i32 = or %0, %10
infer %11
result %9
Invocation:
./souper-check -souper-use-alive filename.opt
The crash is because of a sub-goal containing a phi.
Number of sub-goals : 5
Goal:
%0:i32 = var ; 0
%1:i32 = or 0:i32, %0
%2:i32 = or %0, %1
%3:i32 = or %0, %2
infer %3
result %2
Goal:
%0:i32 = var ; 0
%1:i32 = or 0:i32, %0
infer %1
result %1
Goal:
%0:i32 = var ; 0
%1:i32 = or 0:i32, %0
infer %1
%2 = block 2
%3:i32 = var ; 4
%4:i32 = or %0, %3
%5:i32 = phi %2, %4, 0:i32
%6:i32 = or %0, %5
%7:i32 = or %0, %6
result %7
Goal:
%0:i32 = var ; 0
%1:i32 = or 0:i32, %0
%2:i32 = or %0, %1
infer %2
result %1
Goal:
%0:i32 = var ; 0
%1:i32 = var ; 4
%2:i32 = or %0, %1
%3:i32 = or %0, %2
%4:i32 = or %0, %3
%5:i32 = or %0, %4
infer %5
result %4
from souper.
Related Issues (20)
- Dead links in the RESULTS file
- Souper crash in codegen from valid transformation HOT 5
- Assertion failed: (EB.get(&I)->hasOrigin(&I)), function ExtractExprCandidates, file .../lib/Extractor/Candidates.cpp, line 1025 HOT 6
- Instruction does not dominate all uses!
- Not deterministic SMT query string HOT 1
- Build failure HOT 1
- use error HOT 5
- LLVM Test Suite test failure with NO_INFER
- Build failure HOT 2
- futur m1 support ?
- Better spreading SMT solver load?
- [alive2] `IfNonPoison` removed upstream HOT 1
- Souper fails to turn multiplication by a power of two into a shift? HOT 3
- building for m1 HOT 2
- Packaging Souper HOT 1
- Possible bugs when generating inputs for dataflow pruning HOT 3
- Rgiht way to use souper HOT 2
- Hi, Is this superoptimizer hardware irrelvant? HOT 4
- Question about Souper IR's advantage compare to LLVM IR? HOT 1
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from souper.