Test Failure: Transforms/InstCombine/unfold-masked-merge-with-const-mask-vector.ll

Test source: git

Log:

Source: <stdin>

----------------------------------------
define <2 x i4> @splat(<2 x i4> %x, <2 x i4> %y) {
%0:
  %n0 = xor <2 x i4> %x, %y
  %n1 = and <2 x i4> %n0, { 14, 14 }
  %r = xor <2 x i4> %n1, %y
  ret <2 x i4> %r
}
=>
define <2 x i4> @splat(<2 x i4> %x, <2 x i4> %y) {
%0:
  %1 = and <2 x i4> %x, { 14, 14 }
  %2 = and <2 x i4> %y, { 1, 1 }
  %r = or <2 x i4> %1, %2
  ret <2 x i4> %r
}
Transformation seems to be correct!


----------------------------------------
define <3 x i4> @splat_undef(<3 x i4> %x, <3 x i4> %y) {
%0:
  %n0 = xor <3 x i4> %x, %y
  %n1 = and <3 x i4> %n0, { 14, undef, 14 }
  %r = xor <3 x i4> %n1, %y
  ret <3 x i4> %r
}
=>
define <3 x i4> @splat_undef(<3 x i4> %x, <3 x i4> %y) {
%0:
  %1 = and <3 x i4> %x, { 14, undef, 14 }
  %2 = and <3 x i4> %y, { 1, undef, 1 }
  %r = or <3 x i4> %1, %2
  ret <3 x i4> %r
}
Transformation doesn't verify!
ERROR: Value mismatch

Example:
<3 x i4> %x = < #x0 (0), #xd (13, -3), #x0 (0) >
<3 x i4> %y = < undef, #x8 (8, -8), #x0 (0) >

Source:
<3 x i4> %n0 = < #x0 (0), #x5 (5), #x0 (0) >
<3 x i4> %n1 = < #x0 (0), #x0 (0)	[based on undef value], #x0 (0) >
<3 x i4> %r = < #x0 (0), #x8 (8, -8), #x0 (0) >

Target:
<3 x i4> %1 = < #x0 (0), #x1 (1), #x0 (0) >
<3 x i4> %2 = < #x0 (0), #x0 (0), #x0 (0) >
<3 x i4> %r = < #x0 (0), #x1 (1), #x0 (0) >
Source value: < #x0 (0), #x8 (8, -8), #x0 (0) >
Target value: < #x0 (0), #x1 (1), #x0 (0) >


------------------- SMT STATS -------------------
Num queries: 6
Num invalid: 0
Num skips:   0
Num trivial: 7 (53.8%)
Num timeout: 0 (0.0%)
Num errors:  0 (0.0%)
Num SAT:     4 (66.7%)
Num UNSAT:   2 (33.3%)

stderr:

+ : 'RUN: at line 2'
+ /home/nlopes/alive2/scripts/opt-alive.sh -instcombine -S
+ /home/nlopes/llvm/build/bin/FileCheck /home/nlopes/llvm/llvm/test/Transforms/InstCombine/unfold-masked-merge-with-const-mask-vector.ll

Alive2: Transform doesn't verify; aborting!
FileCheck error: '<stdin>' is empty.
FileCheck command line:  /home/nlopes/llvm/build/bin/FileCheck /home/nlopes/llvm/llvm/test/Transforms/InstCombine/unfold-masked-merge-with-const-mask-vector.ll

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