fuzz: Add memory operations to the graph fuzzer#171
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Emit local memory round trips so the mem2ssa pass and the load store aliasing analysis are exercised by the structured graph fuzzer. Bit 4 of the operation selector now shares two shapes through bit 3. One writes a named VAR with VSTORE and reads it back with VLOAD, the other allocates a stack slot with ALLOCA, writes it with STORE and reads it back with LOAD. Both keep the working type so the operand pool stays homogeneous and the loaded value feeds later records. Enable the mem2ssa pass in the harness so the emitted memory is promoted to SSA values and that pass is covered as well. Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
weltling
marked this pull request as ready for review
July 18, 2026 08:11
dstogov
approved these changes
Jul 20, 2026
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Emit local memory round trips so the mem2ssa pass and the load store aliasing analysis are exercised by the structured graph fuzzer. Bit 4 of the operation selector now shares two shapes through bit 3. One writes a named VAR with VSTORE and reads it back with VLOAD, the other allocates a stack slot with ALLOCA, writes it with STORE and reads it back with LOAD. Both keep the working type so the operand pool stays homogeneous and the loaded value feeds later records.
Enable the mem2ssa pass in the harness so the emitted memory is promoted to SSA values and that pass is covered as well.