Test Failure: Transforms/InstCombine/builtin-dynamic-object-size.ll

Test source: git

Log:

Source: <stdin>
-- 1. ModuleToFunctionPassAdaptor
ERROR: Unsupported instruction:   %gep = getelementptr i8, ptr addrspace(7) @p7, i32 1
ERROR: Unsupported instruction:   %__constexpr_0 = addrspacecast ptr addrspace(7) getelementptr (i8, ptr addrspa
ERROR: Unsupported instruction:   %select = select i1 %c, ptr %p0, ptr addrspacecast (ptr addrspace(7) getelemen
-- 1. PassManager<Function> : Skipping NOP
-- 2. InstCombinePass

----------------------------------------
declare ptr @malloc(i64) alloc-family(malloc) allockind(alloc, uninitialized) allocsize(0)
declare void @free(nocapture ptr) alloc-family(malloc) allockind(free)

define i64 @weird_identity_but_ok(i64 %sz) {
entry:
  %call = tail call ptr @malloc(noundef i64 %sz) nofree noundef nothrow noalias willreturn alloc-family(malloc) allockind(alloc, uninitialized) allocsize(0) memory(inaccessiblemem: readwrite)
  %calc_size = objectsize ptr %call, i1 0, i1 1
  tail call void @free(nocapture noundef allocptr ptr %call) nothrow willreturn alloc-family(malloc) allockind(free) memory(inaccessiblemem: readwrite)
  ret i64 %calc_size
}
Transformation seems to be correct! (syntactically equal)

-- 3. InstCombinePass

----------------------------------------
declare ptr @malloc(i64) alloc-family(malloc) allockind(alloc, uninitialized) allocsize(0)
declare void @free(nocapture ptr) alloc-family(malloc) allockind(free)

define i64 @weird_identity_but_ok(i64 %sz) {
entry:
  %call = tail call ptr @malloc(noundef i64 %sz) nofree noundef nothrow noalias willreturn alloc-family(malloc) allockind(alloc, uninitialized) allocsize(0) memory(inaccessiblemem: readwrite)
  %calc_size = objectsize ptr %call, i1 0, i1 1
  tail call void @free(nocapture noundef allocptr ptr %call) nothrow willreturn alloc-family(malloc) allockind(free) memory(inaccessiblemem: readwrite)
  ret i64 %calc_size
}
=>
define i64 @weird_identity_but_ok(i64 %sz) {
entry:
  %#0 = icmp ne i64 %sz, -1
  assume i1 %#0
  ret i64 %sz
}
Transformation doesn't verify! (unsound)
ERROR: Source is more defined than target

Example:
i64 %sz = #xffffffffffffffff (18446744073709551615, -1)

Source:
ptr %call = null
i64 %calc_size = #x0000000000000000 (0)
Function @free returned

SOURCE MEMORY STATE
===================
NON-LOCAL BLOCKS:
Block 0 >	size: 0	align: 1	alloc type: 0	alive: false	address: #x0000000000000000

LOCAL BLOCKS:
Block 2 >	size: 9223372036854775807	align: 8	alloc type: 2	alive: false
Block 3 >	size: 0	align: 1	alloc type: 0	alive: false	address: #x0000000000000000

Target:
i1 %#0 = #x0 (0)
void = UB triggered!

TARGET MEMORY STATE
===================
NON-LOCAL BLOCKS:
Block 0 >	size: 0	align: 1	alloc type: 0	alive: false	address: #x0000000000000000


Pass: InstCombinePass
Command line: '/home/nlopes/llvm/build/bin/opt' '-load=/home/nlopes/alive2/build/tv/tv.so' '-load-pass-plugin=/home/nlopes/alive2/build/tv/tv.so' '-tv-exit-on-error' '-passes=instcombine' '-S' '-tv-smt-to=20000' '-tv-report-dir=/home/nlopes/alive2/build/logs' '-tv-smt-stats'

Wrote bitcode to: "/home/nlopes/alive2/build/logs/in_NYNv59DH_PUR4.bc"

------------------- SMT STATS -------------------
Num queries: 16
Num invalid: 0
Num skips:   0
Num trivial: 4 (20.0%)
Num timeout: 0 (0.0%)
Num errors:  0 (0.0%)
Num SAT:     12 (75.0%)
Num UNSAT:   4 (25.0%)
Alive2: Transform doesn't verify; aborting!

stderr:

Transforms/InstCombine/builtin-dynamic-object-size.ll' FAILED ********************
Exit Code: 2

Command Output (stdout):
--
# RUN: at line 2
/home/nlopes/alive2/build/opt-alive.sh -passes=instcombine -S < /bitbucket/nlopes/llvm/llvm/test/Transforms/InstCombine/builtin-dynamic-object-size.ll | /bitbucket/nlopes/llvm/build/bin/FileCheck /bitbucket/nlopes/llvm/llvm/test/Transforms/InstCombine/builtin-dynamic-object-size.ll
# executed command: /home/nlopes/alive2/build/opt-alive.sh -passes=instcombine -S
# .---command stderr------------
# `-----------------------------
# error: command failed with exit status: 1
# executed command: /bitbucket/nlopes/llvm/build/bin/FileCheck /bitbucket/nlopes/llvm/llvm/test/Transforms/InstCombine/builtin-dynamic-object-size.ll
# .---command stderr------------
# | FileCheck error: '<stdin>' is empty.
# | FileCheck command line:  /bitbucket/nlopes/llvm/build/bin/FileCheck /bitbucket/nlopes/llvm/llvm/test/Transforms/InstCombine/builtin-dynamic-object-size.ll
# `-----------------------------
# error: command failed with exit status: 2

--

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