Test Failure: Transforms/InstCombine/store.ll

Test source: git

Comments: LLVM bug: removes store undef

Log:

Source: <stdin>
ERROR: Unsupported instruction:   store atomic i32 0, i32* %p unordered, align 4
ERROR: Unsupported instruction:   store atomic i32 0, i32* %p unordered, align 4
ERROR: Unsupported instruction:   store atomic i32 0, i32* %p unordered, align 4
ERROR: Unsupported instruction:   store atomic i32 0, i32* %p unordered, align 4
ERROR: Unsupported instruction:   %v = load atomic i32, i32* %p unordered, align 4
ERROR: Unsupported instruction:   store atomic i32 %v, i32* %p unordered, align 4
ERROR: Unsupported instruction:   %v = load atomic i32, i32* %p unordered, align 4
ERROR: Unsupported instruction:   %v = load atomic i32, i32* %p unordered, align 4
ERROR: Unsupported instruction:   %v = load atomic i32, i32* %p seq_cst, align 4
ERROR: Unsupported instruction:   %v = load atomic volatile i32, i32* %p seq_cst, align 4

----------------------------------------
define void @store_of_undef(ptr %P) {
%0:
  store i32 undef, ptr %P, align 4
  ret void
}
=>
define void @store_of_undef(ptr %P) {
%0:
  ret void
}
Transformation doesn't verify!
ERROR: Mismatch in memory

Example:
ptr %P = pointer(non-local, block_id=1, offset=0)

Source:

SOURCE MEMORY STATE
===================
NON-LOCAL BLOCKS:
Block 0 >	size: 0	align: 4	alloc type: 0
Block 1 >	size: 8	align: 8589934592	alloc type: 0

Target:

Mismatch in pointer(non-local, block_id=1, offset=0)
Source value: #x00000000
Target value: poison


------------------- SMT STATS -------------------
Num queries: 4
Num invalid: 0
Num skips:   0
Num trivial: 6 (60.0%)
Num timeout: 0 (0.0%)
Num errors:  0 (0.0%)
Num SAT:     4 (100.0%)
Num UNSAT:   0 (0.0%)
Alive2: Transform doesn't verify; aborting!

stderr:

+ : 'RUN: at line 2'
+ /home/nlopes/llvm/build/bin/FileCheck /home/nlopes/llvm/llvm/test/Transforms/InstCombine/store.ll
+ /home/nlopes/alive2/build/opt-alive.sh -passes=instcombine -S

FileCheck error: '<stdin>' is empty.
FileCheck command line:  /home/nlopes/llvm/build/bin/FileCheck /home/nlopes/llvm/llvm/test/Transforms/InstCombine/store.ll

 

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