Test Failure: Transforms/StraightLineStrengthReduce/slsr-mul.ll

Test source: git

Log:

Source: <stdin>
-- 1. ModuleToFunctionPassAdaptor
-- 1. PassManager<Function> : Skipping NOP
-- 2. StraightLineStrengthReducePass

----------------------------------------
declare void @foo(i32)

define void @slsr1(i32 %b, i32 %s) {
#0:
  %mul0 = mul i32 %b, %s
  call void @foo(i32 %mul0)
  %b1 = add i32 %b, 1
  %mul1 = mul i32 %b1, %s
  call void @foo(i32 %mul1)
  %b2 = add i32 %b, 2
  %mul2 = mul i32 %b2, %s
  call void @foo(i32 %mul2)
  ret void
}
Transformation seems to be correct! (syntactically equal)

-- 3. StraightLineStrengthReducePass

----------------------------------------
declare void @foo(i32)

define void @slsr1(i32 %b, i32 %s) {
#0:
  %mul0 = mul i32 %b, %s
  call void @foo(i32 %mul0)
  %b1 = add i32 %b, 1
  %mul1 = mul i32 %b1, %s
  call void @foo(i32 %mul1)
  %b2 = add i32 %b, 2
  %mul2 = mul i32 %b2, %s
  call void @foo(i32 %mul2)
  ret void
}
=>
declare void @foo(i32)

define void @slsr1(i32 %b, i32 %s) {
#0:
  %mul0 = mul i32 %b, %s
  call void @foo(i32 %mul0)
  %mul1 = add i32 %mul0, %s
  call void @foo(i32 %mul1)
  %mul2 = add i32 %mul1, %s
  call void @foo(i32 %mul2)
  ret void
}
Transformation doesn't verify! (unsound)
ERROR: Source is more defined than target

Example:
i32 %b = #x00000000 (0)
i32 %s = undef

Source:
i32 %mul0 = #x00000000 (0)
Function @foo returned
i32 %b1 = #x00000001 (1)
i32 %mul1 = #x00000000 (0)	[based on undef value]
Function @foo returned
i32 %b2 = #x00000002 (2)
i32 %mul2 = #x00000000 (0)	[based on undef value]
void = function did not return!

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

Target:
i32 %mul0 = #x00000000 (0)
Function @foo returned
i32 %mul1 = #x00000000 (0)
Function @foo returned
i32 %mul2 = #x00000000 (0)
void = function did not return!


Pass: StraightLineStrengthReducePass
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=slsr,gvn' '-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_6OQ5pd0F_G0Dp.bc"


------------------- SMT STATS -------------------
Num queries: 36
Num invalid: 0
Num skips:   0
Num trivial: 10 (21.7%)
Num timeout: 4 (11.1%)
Num errors:  0 (0.0%)
Num SAT:     30 (83.3%)
Num UNSAT:   2 (5.6%)
Alive2: Transform doesn't verify; aborting!

stderr:

RUN: at line 1: /home/nlopes/alive2/build/opt-alive.sh < /bitbucket/nlopes/llvm/llvm/test/Transforms/StraightLineStrengthReduce/slsr-mul.ll -passes=slsr,gvn -S | /bitbucket/nlopes/llvm/build/bin/FileCheck /bitbucket/nlopes/llvm/llvm/test/Transforms/StraightLineStrengthReduce/slsr-mul.ll
+ /home/nlopes/alive2/build/opt-alive.sh -passes=slsr,gvn -S
+ /bitbucket/nlopes/llvm/build/bin/FileCheck /bitbucket/nlopes/llvm/llvm/test/Transforms/StraightLineStrengthReduce/slsr-mul.ll

FileCheck error: '<stdin>' is empty.
FileCheck command line:  /bitbucket/nlopes/llvm/build/bin/FileCheck /bitbucket/nlopes/llvm/llvm/test/Transforms/StraightLineStrengthReduce/slsr-mul.ll

NOTE: This test would pass if undef didn't exist!

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